JPWO2018230328A1 - Surface treatment method and surface treatment composition - Google Patents

Abstract

The present invention provides a surface treatment method capable of realizing a coating formation excellent in aesthetics and durability on a painted surface at a time by a simple construction that does not depend on the ability of an operator, and a surface suitable for the method. A composition for treatment is provided. The present invention comprises (A) a polymeric organosilane having a reactive group, (B) a reaction catalyst, and (C) abrasive particles made of an inorganic compound having an average primary particle size of 0.1 to 10,000 nm. It is a surface treatment method in which the composition for surface treatment is used and the construction is performed using a polisher.

Description

  The present invention relates to a surface treatment method using a composition containing a reactive polymeric organosilane. More specifically, base materials such as metal steel materials, synthetic resin materials, glass, and ceramics, such as vehicle bodies and windows of automobiles and trains, rear view mirrors, building structural members such as roads and piers, and structures such as houses and buildings. Walls, windows and tops, housing members, etc., especially substrates with a painted surface, can be aesthetically improved by construction using a polisher, while at the same time forming a film with excellent durability. Therefore, the present invention relates to a surface treatment technology capable of protecting from dirt and damage.

  BACKGROUND ART Conventionally, a solid, semi-solid or liquid curable composition has been applied and applied to a coated steel sheet or the like of an automobile body for the purpose of improving appearance and protecting it. As such a curable composition, for example, a composition obtained by adding a volatile organopolysiloxane oil and a volatile dimethylpolysiloxane to a moisture-curable organopolysiloxane, an organic solvent, and a curing catalyst (JP 2006-45507 A). Alternatively, a composition containing a high-viscosity silicone gum (Japanese Patent Laid-Open No. 2013-194058) is known. However, it is difficult for the coating film formed of these compositions to exhibit water repellency for a long period of time, because the non-reactive organopolysiloxane oil component evaporates away over time and flows out under the influence of rain or the like. .

  In order to solve the above problems, various compositions comprising a moisture-curable organopolysiloxane, an organic solvent, a curing catalyst, and a silicone oil having a reactive functional group in the molecule have been proposed. Japanese Unexamined Patent Publication No. 2008-75021 discloses one using a reactive silicone oil having a reactive group selected from a carbinol group, a carboxy group, an amino group, a hydroxyl group (silanol group) and the like at both ends of a molecular chain. In addition, in JP-A-2006-45507 and JP-A-2007-161989, a low-viscosity reactive organopolysiloxane having an alkoxysilyl group at the end of a molecular chain is used as an alcohol-based solvent or a paraffin-based solvent. It is disclosed that it is diluted with a solvent, an aromatic solvent, an ester solvent, a glycol solvent or the like. Further, Japanese Patent Application Laid-Open No. 2010-31074 proposes that a reactive silicone oil having a carbinol group or an amino group in a side chain of a molecule is used, and WO 96/000758 (US Pat. (Corresponding to the specification of No. 000,339), one containing a fluorine-containing alkoxysilane is proposed. JP-A-2009-138063, JP-A-2009-138062, JP-A-2013-166957, JP-A-2010-202717, etc. disclose reactive organopolysiloxanes having an alkoxysilyl group at the molecular chain end. , Which are diluted with a large amount of a solvent such as isoparaffinic solvent or kerosene are disclosed. Japanese Unexamined Patent Publication No. 2012-241093 (corresponding to U.S. Patent Application Publication No. 2014/065396) discloses a reactive organopolysiloxane diluted with an isoparaffinic solvent having a high boiling point.

  On the other hand, in JP2010-163553A and JP2005-059187A, a polishing composition suitable for construction by a polisher, which is obtained by dispersing or mixing resin components such as silicone resin and silicone elastomer in water. Is disclosed. Japanese Unexamined Patent Publication No. 2002-47455 discloses a vehicle body surface treatment method using a composition containing silicone having a condensable reactive group and a mechanical continuous working device such as a polisher. The surface treatment with a polisher is basically to polish the surface of a vehicle body to smooth the surface and improve its aesthetic appearance.

  JP-A-10-36771, JP-A 2013-194058, JP-A 2008-75021, JP-A 2006-45507, JP-A 2007-161989, JP-A 2010-31074, and International Publication. No. 96/000758, JP2009-138063A, JP2009-138062A, JP2013-166957A, JP2010-202717A and JP2012-241093A. Each of the compositions can protect the surface of the base material made of metal or the like, but it is not one that can improve the aesthetics of the base material surface deteriorated by sunlight, wind and rain, and various other factors. It only gives and maintains the gloss of the coating film in the state at the time. In addition, in order to apply these compositions evenly, a liquid agent for wiping with water or a separate wipe is required, and if you try to apply only by dry wiping, it cannot be wiped off smoothly and the coating film is uneven. However, there was a problem such as the occurrence of problems, and the workability during coating was difficult. On the other hand, in the polishing process according to the techniques disclosed in JP 2010-163553 A, JP 2005-059187 A and JP 2002-47455 A, the aesthetic effect by polishing the vehicle body surface is focused on. However, for example, the compositions described in JP2010-163553A and JP2005-059187A do not contain a reactive silicone oligomer that can contribute to the formation of a strong coating film after application. The composition described in JP-A-2002-47455 contains a silicone having a condensation-reactive group but does not contain a curing catalyst. Therefore, under no-catalyst conditions, crosslinking between silicones is hardly performed. However, it is difficult to form a sufficiently durable coating film. Therefore, in the polishing treatments by the techniques described in JP2010-163553A, JP2015-059187A, and JP2002-47455A, durability is separately required for forming a coating film that functions for a long time. It was necessary to apply a coating.

As described above, in the conventional film-forming curable composition, it was difficult to form a coating film capable of satisfying both aesthetics and durability by a simple construction method. As a result, this has been achieved by the following method. That is, the surface treatment method according to one embodiment of the present invention is
(A) a polymeric organosilane having a reactive group,
(B) a reaction catalyst,
(C) Abrasive particles having an average primary particle size of 0.1 to 10,000 nm,
Is a surface treatment method in which the surface treatment composition containing the composition is used to perform construction using a polisher.

  The present invention also includes the following embodiments.

The second embodiment is based on the above (A) 1 part by mass,
The content of (B) is 0.001 to 0.5 parts by mass,
It is the said surface treatment method whose content of (C) is 0.01-1.0 mass part.

  The third embodiment is the above-mentioned surface treatment method, wherein (A) is an organopolysiloxane having a reactive group.

  A fourth embodiment is the above-mentioned surface treatment method, which further comprises (D) an organic solvent substantially free of water in a range of 0.1 to 100 parts by mass with respect to 1 part by mass of (A). .

  A fifth embodiment is the above surface treatment method, wherein the content of (D) is in the range of 1.0 to 10 parts by mass with respect to 1 part by mass of (A).

  A sixth embodiment is the above-mentioned surface treatment method, wherein the reactive group (A) is a hydrolytically polymerizable reactive group.

  A seventh embodiment is the above-mentioned surface treatment method, wherein the average primary particle size of (C) is in the range of 0.1 to 200 nm.

  An eighth embodiment is the above surface treatment method, wherein the average primary particle diameter of (C) is in the range of 1 to 150 nm.

  A ninth embodiment is the above-mentioned surface treatment method, wherein (C) is abrasive particles containing an inorganic compound.

  A tenth embodiment is the above-mentioned surface treatment method, wherein the (C) is abrasive particles containing silica particles whose surface is hydrophobically treated.

  An eleventh embodiment is the above-mentioned surface treatment method, wherein the surface to be constructed by using the polisher is a surface to be coated which is previously coated.

  A twelfth embodiment is the above-mentioned surface treatment method, wherein the pre-painted surface to be coated is the surface of a steel sheet to be coated and / or the surface of a resin member to be coated which is used for the exterior body of an automobile. .

  A thirteenth embodiment is the surface treatment method described above, wherein the polisher is a rotary polisher.

  A fourteenth embodiment is the surface treatment method described above, wherein the polisher is a single-action or double-action rotary polisher.

  The fifteenth embodiment is the surface treatment method described above, wherein the construction uses a polisher provided with a contact member made of microfiber.

The sixteenth embodiment is
(A) a polymeric organosilane having a reactive group,
(B) a reaction catalyst,
(C) Abrasive particles having an average primary particle size of 0.1 to 10,000 nm,
A surface-treating composition for polisher construction, comprising:

5 is a photograph comparing a state (a) of the surface coating part of the automobile body before the test, which is evaluated in the example, with a state (b) after the test of the example 14 is performed.

  The surface treatment method according to the present invention is a method of performing polishing and film formation treatment on the surface of a base material, which comprises (A) a reactive group-containing polymeric organosilane, (B) a reaction catalyst, and (C). The surface-treating composition containing abrasive particles having an average primary particle diameter of 0.1 to 10,000 nm is used, and construction is performed using a polisher. Moreover, the surface treatment composition for polisher construction of the present invention contains the above (A) to (C). The surface-treating method of the present invention having the above-mentioned constitution and the surface-treating composition used in the method are used for polishing the surface of a substrate used for a vehicle body of an automobile, etc., especially for a surface of a coated substrate. It is possible to form a coating that is excellent in both aesthetics and durability by a simple method called construction by which the operator's skill does not depend on skill.

  The details of the present invention will be described below.

<(A) Polymeric organosilane having a reactive group>
The component (A) contained in the surface treatment composition used in the present invention is a high-molecular organosilane having a reactive group. The component is the main component of the durable coating in the cured coating formed by the surface treatment of the present invention. Here, the high molecular weight organic silane means a high molecular weight compound having a main skeleton of —SiR ¹ R ² —NR ³ — units such as polysilazane, a high molecular weight compound having a main skeleton of a siloxane bond such as organopolysiloxane, and the like. Means a compound having an organic group and Si in the main chain of the polymer, and has a molecular weight of about 500 or more. Among them, organopolysiloxane having a reactive group is preferable from the viewpoint of easy control of curing characteristics and ease of polisher construction.

  The reactive group can contribute to the formation of a durable coating by reacting with a functional group that can contribute to curing by crosslinking between the compounds of the component (A), or by reacting with a reaction point on the surface of the substrate. There is no particular limitation as long as it is a functional group. As the reactive group, for example, a hydrolysis-polymerizable reactive group, an addition-polymerizable reactive group such as a hydrosilyl group and an alkenyl group, a radical-polymerizable reactive group such as an acryloyl group, and a functional group such as an epoxy group should be selected. You can In the present invention, the hydrolysis-polymerizable reactive group is particularly preferable because a coating film having excellent durability and gloss can be formed on the surface of the base material by performing the construction treatment in a room temperature environment. Examples of the reactive group include the following functional groups bonded to a silicon atom: amino group, epoxy group, mercapto group, methacryloyl group, acryloyl group, carbinol group, carboxyl group, alkoxy group, aminoxy group, ketoxime group, It can be selected from an alkenyloxy group, an amide group and an acetoxy group, and from the viewpoint of ease of forming a cured coating film in a working environment, an alkoxy selected from a methoxy group, an ethoxy group, a propoxy group and a phenoxy group is preferable. Group, more preferably an alkoxy group selected from a methoxy group and a phenoxy group. Further, the following functional groups having no reactivity in the compound of the component (A) are selected from the following: methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, t-butyl group and phenyl group. It may have an organic group, and it is more preferable to have an organic group selected from a methyl group, an ethyl group and a phenyl group from the viewpoint of easily forming a coating film having high hardness and high water repellency. A polymer having a total of two or more of the above-mentioned hydrolysis-polymerizable reactive groups at the terminal or side chain of the molecular chain and having the above-mentioned non-reactive organic group as the other functional group is present in the system. A condensation reaction is carried out by the action of the reaction catalyst of the component (B) described below, and a film is formed by cross-linking between molecules or by reaction with a reaction point on the surface of the substrate, and a coating having excellent durability is applied to the substrate surface. be able to.

The high molecular weight organic silane of the component (A) in the present invention is typically polysilazane or organopolysiloxane. The polysilazane that can be used in the present invention is not particularly limited, and is a compound having a repeating structure of — (SiR ¹ R ² —NR ³ ) — in a molecule, and is crosslinked in a chain shape, a cyclic shape, or an intermolecular shape. A structure or the like can be appropriately selected and used. Here, in the above formula, R ¹ , R ² and R ³ are each independently an organic group selected from a hydrogen atom and a hydrocarbon group which may have a substituent, and preferably a hydrogen atom and a substituent. Is an organic group selected from a hydrocarbon group having 1 to 6 carbon atoms, and more preferably an organic group selected from a hydrogen atom and an aliphatic hydrocarbon group having 1 to 4 carbon atoms. . Here, those in which R ¹ , R ² and R ³ are all hydrogen atoms in the above formula are generally referred to as inorganic polysilazanes or perhydropolysilazanes, and those in which any of R ¹ , R ² and R ³ contains an organic group. Generally referred to as organic polysilazane or organopolysilazane. In the present invention, both organic polysilazane and inorganic polysilazane can be used, and these may be mixed and used, and can be appropriately selected according to the properties required for the cured product. For example, when a cured product is required to have a relatively high hardness, a composition containing a large amount of inorganic polysilazane is used, and when flexibility is required, a composition containing a large amount of organic polysilazane is prepared. it can. In addition, polymetallosilazane, which is a modified product of polysilazane, in which a part of R ¹ and R ² is substituted with a metal atom may be used.

  It is known that polysilazane causes a sol-gel reaction to form a polysiloxane by contacting with water in the air. By forming the polysiloxane layer on an adherend, it becomes a main component of a coating film having excellent water resistance, oil resistance, impact resistance and the like. At this time, nitrogen in the molecule is desorbed to generate ammonia, which serves as a catalyst to further promote the reaction. In this reaction, the Si—N bond is changed to a Si—O bond, and the curing shrinkage due to the generation of a leaving group and the reduction of the interatomic distance, like the crosslinking between alkoxysilane molecules, occurs. The feature is that it hardly occurs. Therefore, the occurrence of cracks, which is a drawback of forming a polysiloxane film by the sol-gel reaction, can be reduced, so that a film having excellent followability can be formed even on a substrate having irregularities.

  As commercial products of the polysilazane, AZ Electronic Materials Co., Ltd. Aquamica (registered trademark) NN110, NN120-10, NN120-20, NN310, NN320, NL110A, NL120A, NL120-20, NL150A, NP110, NP140-01, NP140-02, NP140-03, SP140, KiON (registered trademark) HTT1880, KiON (registered trademark) HTA1500 rapid cure, KiON (registered trademark) HTA1500 slow cure, totoProm (registered trademark) matt HD, tutoProm (registered trademark). , CAG 37, tutoProm (registered trademark) bright, and the business of AZ Electronic Materials Co., Ltd. Known materials such as Durazane (registered trademark) 1500 Rapid Cure, Durazane 1 (registered trademark) 500 Slow Cure, Durazane (registered trademark) 1800, NAX120, NL120A, and NN120 manufactured by Merck & Co., Inc. can be used in the present invention. May be used alone or in combination of two or more.

  The organopolysiloxane that can be used in the present invention is not particularly limited, and a compound having a structure having a reactive group in the polymer which is a skeleton structure of Si—O, preferably a total of two such reactive groups. As long as it is a compound having the above structure, a material suitable for necessary characteristics can be appropriately selected. As the compound, for example, a so-called reactive silicone oil of a chain polymer having a total of two or more reactive groups at the terminal or side chain of the molecular chain, or having a three-dimensional network structure in the molecule and having a reactive group So-called reactive silicone oligomers having a large number of polymers and so-called reactive silicone resins having a large degree of polymerization and a complicated network structure are applicable, and these can be used in combination depending on the required properties.

  When the reactive silicone oil is used alone as a cured film-forming component, it typically has two or more reactive groups at the linear molecule terminal or side chain of the siloxane skeleton, and other functional groups on the silicon atom. It is a polymer having a structure in which the non-reactive organic group is bonded as a group. When a reactive silicone oil is mixed with a silicone oligomer or a silicone resin as a component for forming a cured film, it is not limited to the above structure, and for example, even if one reactive group is present in the molecule. Good. Examples of commercially available products of the compound include X-22-161A, X-22-161B, X-22-162C, X-22-163A, X-22-163B, and X-22-164A manufactured by Shin-Etsu Chemical Co., Ltd. , X-22-164B, X-22-167B, X-22-167C, X-22-169B, KF-8012, KF-8008, KF-6000, KF-6001, X-21-5841, KF-9701. Etc., BY16-750, BY16-201, BY16-853U, BY16-873, SF8427, FZ-3736, FZ-3704, etc. manufactured by Toray Dow Corning Co., Ltd., YF3800, XF3905 manufactured by Momentive Performance Materials, Inc. Select YF3057, YF3807, YF3802, YF3897, XC96-723, etc. It is possible.

  Typically, the reactive silicone oligomer and the reactive silicone resin have one or more of the above reactive groups on Si in a polymer having a siloxane skeleton having a three-dimensional network structure, and other functional groups on Si. It is a polymer having a structure in which the non-reactive organic group is bonded as a group. Commercially available products of the compound include KR-500, KC-89S, X-40-9225, X-40-9250, X-40-9227, KR-510, KR-511, and X manufactured by Shin-Etsu Chemical Co., Ltd. -41-1805, X-41-1810, X-24-9590, KR-251, KR-255, KR-112, KR-400, KR-401, X-40-2327 manufactured by the same company containing a curing catalyst. , Momentive Performance Materials Japan GK, XC96-B0446, XR31-B1410, XR31-B2733, XR31-B2230, TSR165, XR31-B6667, XR31-B1763, SILRES MSE100, SILRES manufactured by Asahi Kasei Wacker Silicone Co., Ltd. H44, manufactured by Toray Dow Corning Co., Ltd. SH550, etc., which may be used alone or in combination of two or more.

  In the present invention, the particularly preferable polymer organosilane of the component (A) is an organopolysiloxane, more preferably one selected from a reactive silicone oligomer or a reactive silicone resin, and most preferably a reaction. Silicone oligomer. By using the reactive silicone oligomer, the surface treatment by the method of the present invention can maintain an appropriate pot life and workability based on the liquid viscosity, and the cured film to be formed has an appropriate toughness. It can be made flexible and excellent in durability.

  Particularly preferred as the high molecular weight organic silane of the component (A) in the present invention is a reactive silicone oligomer, typically a partial hydrolysis condensation of an alkoxysilane compound represented by the following structural formula (1). It is a thing.

Here, R ⁴ and R ⁵ are preferably each independently a substituent selected from a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and a phenyl group, and more preferably a methyl group and a phenyl group. It is a substituent selected from among, and particularly preferably each is a methyl group. Further, x is an integer of 0 to 3, preferably 0 or 1, and particularly preferably 1 is included. As the method for producing the high molecular weight organosilane of the component (A), a known hydrolysis catalyst is added to the compound represented by the above structural formula, and stirring is performed while heating in the presence of water to cause partial hydrolysis condensation. Can be obtained. Here, in the above structural formula, when x is 0 or 1, the polymer of the compound has an alkoxy group represented by (OR ⁵ ) in the side chain when it becomes a straight chain. Alternatively, the polymer may not have a linear structure but a three-dimensional crosslinked product, and in that case, the structure partially contains an alkoxy group. The compound may include those in which x is 2 or 3, but in order to effectively add an alkoxy group to the structure of the high molecular weight organosilane of the component (A), x is 0 or 1 It is particularly preferable to include one. Moreover, the said compound has a kinematic viscosity measurement value of the compound alone at 25 ° C. of about 0.1 to 1,000 mm ² s ⁻¹ in accordance with JIS Z 8803: 2011 from the viewpoint of handleability during production. It is preferable to use those in the range, and more preferably those in the range of 0.5 to 500 mm ² s ⁻¹ . When the kinematic viscosity of the high molecular weight organosilane as the component (A) is within the above range, the cured film of the surface treatment composition has particularly good properties such as water repellency or water slippage and abrasion durability. The workability during construction can also be made appropriate.

<(B) Reaction catalyst>
The component (B) contained in the surface treatment composition used in the present invention is a reaction catalyst for reacting the reactive group contained in the polymeric organosilane of the component (A). As the compound which is the reaction catalyst of the component (B), typically, when the reactive group is a hydrolysis-polymerizable reactive group (Si-OR ⁵ ), the hydrolysis-polymerizable reactive group is present in the air. It is a hydrolysis reaction catalyst for reacting with moisture or the like to cause a condensation reaction. Examples of the hydrolysis reaction catalyst include organometallic compounds such as organotin compounds, organotitanium compounds, organonickel compounds and organoaluminum compounds, inorganic acids such as hydrochloric acid and sulfuric acid, p-toluenesulfonic acid and various aliphatic or aromatic compounds. Group carboxylic acids and other organic acids, ammonia, sodium hydroxide and other inorganic bases, tributylamine, 1,5-diazabicyclo [4.3.0] nonene-5 (DBN), 1,8-diazabicyclo [5.4] .0] Undecene-7 (DBU) and other organic bases can be appropriately selected and used.

  As the reaction catalyst of the component (B) in the present invention, an organometallic compound is preferable, and specifically, dibutyltin dilaurate, dibutyltin dioctate, dibutyltin diacetate, dioctyltin dilaurate, dioctyltin dioctate, dioctyltin diacetate, dibutyl. Organic tin compounds such as tin bis acetyl acetate, dioctyl tin bis acetyl laurate, tetrabutyl titanate, tetranonyl titanate, tetrakis ethylene glycol methyl ether titanate, tetrakis ethylene glycol ethyl ether titanate, bis (acetylacetonyl) dipropyl titanate Aluminum salt compounds such as organic titanium compounds, aluminum octylate, aluminum triacetate and aluminum tristearate, aluminum trichloride Aluminum alkoxide compounds such as toxide, aluminum triethoxide, aluminum triallyl oxide, aluminum triphenoxide, aluminum methoxybis (ethylacetoacetate), aluminum methoxybis (acetylacetonate), aluminum ethoxybis (ethylacetoacetate), aluminum ethoxy Bis (acetylacetonate), aluminum isopropoxybis (ethylacetoacetate), aluminum isopropoxybis (methylacetoacetate), aluminum isopropoxybis (t-butylacetoacetate), aluminum butoxybis (ethylacetoacetate), aluminum dimethoxy (Ethyl acetoacetate), Aluminum dimethoxy (acetylacetonate) Aluminum diethoxy (ethyl acetoacetate), aluminum diethoxy (acetyl acetonate), aluminum diisopropoxy (ethyl acetoacetate), aluminum diisopropoxy (methyl acetoacetate), aluminum tris (ethyl acetoacetate), aluminum tris (acetyl) Acetonate), aluminum octyl acetoacetate diisoproplate and the like, and organic nickel compounds such as nickel (II) acetylacetonate and nickel (II) hexafluoroacetylacetonate hydrate. May be used alone or in combination of two or more. Among these compounds, an organic aluminum compound is particularly preferable, and more preferably aluminum tris (acetylacetonate), aluminum tris (ethylacetoacetate), aluminum diisopropoxy (ethylacetoacetate), aluminum octylacetoacetate diisoproplate, aluminum mono. It is an organoaluminum compound selected from acetylacetonate bis (ethylacetoacetate).

  As the reaction catalyst of the component (B), a known commercial product can be used. For example, if it is an organic aluminum compound, Shin-Etsu Chemical Co., Ltd. DX-9740 (mixture of aluminum alkoxide compounds), CAT-AC (mixture of aluminum alkoxide compounds, 50 mass% toluene diluted product), Kawaken Fine Chemicals Co., Ltd. Company-made aluminum chelate A (W) (aluminum tris (acetylacetonate)), aluminum chelate D (aluminum monoacetylacetonate bis (ethylacetoacetate), active ingredient amount 76% by mass), AIPD (aluminum isopropylate), ALCH (aluminum diisopropoxy (ethyl acetoacetate)), ALCH-TR (aluminum tris (ethyl acetoacetate)), Tokyo Chemical Industry Co., Ltd. A0246 (aluminum isopropoxide), organic If it is a nickel compound, Organix TA-10 (titanium tetraisopropoxide) manufactured by Matsumoto Fine Chemical Co., Ltd., Organix TA-25 (titanium tetranormal butoxide), if it is an organic zirconium compound, Matsumoto Fine Chemical Co., Ltd. Organix ZA-40 (zirconium tetranormal propoxide), Organix ZA-65 (zirconium tetranormal butoxide) and the like can be used. These may be used alone or in combination of two or more.

  The content of the reaction catalyst of the component (B) in the present invention is not particularly limited, but is preferably in the range of 0.001 to 0.5 parts by mass with respect to 1 part by mass of the component (A). , More preferably 0.003 to 0.3 parts by mass, and even more preferably 0.005 to 0.2 parts by mass. When the content is at least the lower limit, the surface-treating composition of the present invention does not cause defects in curing and can form a cured film having sufficient strength. On the other hand, when the content is less than or equal to the upper limit, the surface treatment composition of the present invention can reduce the possibility of causing a problem in storability at room temperature. When the reactive group contained in the high molecular weight organosilane of the component (A) is not a hydrolysis-polymerizable reactive group, a catalyst necessary for the crosslinking reaction of each reactive group may be appropriately selected and used. it can. For example, in the case where the reactive group is (i) an addition-polymerizable reactive group of a combination of a hydrosilyl group and an alkenyl group, an addition polymerization catalyst composed of a platinum compound or the like may be used, such as (ii) an acryloyl group. In the case of a radically polymerizable reactive group, an azo compound, an organic peroxide, an acyloin compound, benzophenone or the like is selected, and in the case of (iii) an epoxy group, an amine compound or an arylonium salt compound is selected, respectively. It can be carried out and may be taken into the system and deactivated after the reaction.

<(C) Abrasive particles having an average primary particle size of 0.1 to 10,000 nm>
The component (C) contained in the surface treatment composition used in the present invention is abrasive particles having an average primary particle diameter of 0.1 to 10,000 nm, and smoothes the surface of the base material in the polishing treatment with polish. At the same time, it is a component that, after the curing reaction, exerts a function of contributing to the formation of a cured film having excellent durability. Here, the abrasive particles of the component (C) are particles selected from inorganic compounds or organic compounds. Among these, as the particles of the inorganic compound, for example, calcined or uncalcined kaolin, alumina, silica, talc, glass, mica, diamond, bentonite, montmorillonite, celite, shirasu balloon, ceramics, silica, diatomaceous earth, perlite, calcium carbonate. , Zeolite, hydrous silicic acid, chromium oxide, titanium oxide, zinc oxide, iron oxide, zirconium oxide, cerium oxide, magnesium oxide, calcium fluoride, aluminum silicate, calcium silicate, zirconium silicate, aluminum hydroxide, barium sulfate, various metal colloids , Smectite, silicon carbide, aluminum tripolyphosphate, colloidal silica, fumed silica, etc., spherical powder, scaly powder or amorphous powder, colloidal silica, fumed silica, alumina, silica gel, etc., hollow spherical powder And although these include fines organic compound such as surface treatment or coating, not as far as these. Examples of the particles of the organic compound include poly (meth) acrylic acid ester, polystyrene, polyolefin, phenol resin, epoxy resin, polyacrylonitrile, polybutadiene, styrene resin, high density polyethylene resin, urea resin, polyester resin, polyvinyl chloride. , Fine particles of nylon (registered trademark), polyamide, cellulose, polycarbonate, fluororesin and cross-linked polymers thereof, and those particles whose surface is coated with an inorganic compound or metal, or a functional group-introducing treatment However, it is not limited to these. The abrasive particles of the component (C) in the present invention do not prevent the combined use of two or more of these, depending on the properties required in the surface treatment composition. The shape of the particles of these inorganic compounds and organic compounds is not particularly limited, and can be various shapes such as spherical, scale-like, amorphous, needle-like, and fibrous. Also, so-called hollow particles having voids inside the particles may be used. Further, the abrasive particles of the component (C) in the present invention are preferably abrasive particles containing the above-mentioned inorganic compound, more preferably abrasive particles selected from the above-mentioned inorganic compound, from the viewpoint of good scratch resistance. Preferably one or more selected from kaolin, talc, silica, mica, alumina, celite, calcium carbonate, titanium oxide, zinc oxide, iron oxide, and particularly preferably kaolin, alumina, silica, celite, calcium carbonate, oxidation. Abrasive particles containing one or more selected from titanium and zinc oxide, particularly preferably one or more selected from kaolin, alumina, silica and celite, and most preferably one or more selected from kaolin and silica.

  As the kaolin particles, hydrous kaolin particles and calcined kaolin particles are known, and both can be used in the present invention, but calcined kaolin particles are preferably used. As a commercially available product of kaolin particles, for example, hydrous kaolin particles include ASP-G92, ASP-200, ASP-170, ASP-600, ASP-900 manufactured by BASF, and Hydrite (registered by Imerys Specialties Japan KK). Trademark) PXN-LCS, Hydrite (registered trademark) RS, Hydrite (registered trademark) Flat-DS, Barrisurf HX Eckalite 1, Eckalite ED and the like are known. In addition, the untreated calcined kaolin particles include Satintone (registered trademark) W, Satintone (registered trademark) SP-33, Satintone (registered trademark) 5HB, and Satintone (registered trademark) SPECIAL, manufactured by BASF. 5, Satintone (registered trademark) PLUS, Neogen (registered trademark) 2000, Polestar (registered trademark) 400, Glomax (registered trademark) LL, and Polester (registered trademark) 200R manufactured by Imerys Specialties Japan KK are known. Further, the surface-hydrophobicized calcined kaolin particles include Translink (registered trademark) 37, Translink (registered trademark) 77, Translink (registered trademark) 445, Translink (registered trademark) 555, and Imerys Specialties Japan KK manufactured by BASF. Polarite (registered trademark) 103A, Polarite (registered trademark) 503S, Polarite (registered trademark) 102A, and the like are known. As the kaolin particles, these known materials can be appropriately combined and used.

  As the silica particles, there are known silica particles whose surfaces are hydrophobically treated (also referred to as hydrophobic silica particles) and untreated hydrophilic silica particles, both of which can be used in the present invention. . From the viewpoint of water repellency of the coating film after curing, it is more preferable to use abrasive particles containing the hydrophobic silica particles as the component (C), and more preferably, the hydrophobic silica particles. It is desirable to use abrasive particles consisting of The silica particles having the surface subjected to the hydrophobic treatment means silica particles obtained by modifying the surface of the crude silica particles with a hydrophobic treatment agent. Known examples of the hydrophobic treatment agent include fatty acids, resin acids, fatty acid esters, fatty acid metal salts, alkoxysilyl compounds such as silane coupling agents, silazane compounds, and silicone oil. Particularly preferred hydrophobizing agents are alkoxysilyl compounds or silazane compounds. Examples of the alkoxysilyl compound include methyltrimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, butyltrimethoxysilane, octyltriethoxysilane, hexyltriethoxysilane, decyltriethoxysilane, phenyltriethoxysilane, and methyltriethoxy. Silane, dimethyldiethoxysilane, diphenyldiethoxysilane, vinyltriethoxysilane, methacryloxypropyltrimethoxysilane, glycidoxypropyltrimethoxysilane, glycidoxypropylmethyldimethoxysilane, mercaptopropyltrimethoxysilane, chloropropyltrimethoxysilane Silane, aminopropyltrimethoxysilane, (2-aminoethyl) aminopropyltrimethoxysilane, (2-aminoethyl) a Alkoxysilanes such as Roh propyl methyl dimethoxy silane are known. Hexamethyldisilazane and the like are known as the silazane compound. By appropriately selecting the conditions in these hydrophobizing agents or a diluted solution thereof and stirring the crude silica particles, the surface of the crude silica particles is modified.

  Examples of commercially available silica particles include, for hydrophilic silica particles, Aerosil (registered trademark) 90, Aerosil (registered trademark) 130, Aerosil (registered trademark) 150, and Aerosil (registered trademark) manufactured by Nippon Aerosil Co., Ltd. 200, Aerosil (registered trademark) 255, Aerosil (registered trademark) 300, Aerosil (registered trademark) 380, Aerosil (registered trademark) OX50, Aerosil (registered trademark) TT600, Aerosil (registered trademark) 200F, Aerosil (registered trademark) 380F , HDK (registered trademark) S13, HDK (registered trademark) V15, HDK (registered trademark) N20, HDK (registered trademark) N20P, HDK (registered trademark) T30, HDK (registered trademark) T40 and the like manufactured by Wacker Are known. In addition, hydrophobic silica includes Aerosil (registered trademark) R972, Aerosil (registered trademark) R974, Aerosil (registered trademark) R104, Aerosil (registered trademark) R106, Aerosil (registered trademark) R202, manufactured by Nippon Aerosil Co., Ltd. Aerosil (R) R208, Aerosil (R) R805, Aerosil (R) R812, Aerosil (R) R7200, Aerosil (R) RY50, Aerosil (R) RY200, Aerosil (R) R, Aerosil. (Registered trademark) RX200, Aerosil (registered trademark) RX300, Aerosil (registered trademark) RX380S, Aerosil (registered trademark) R976, Aeros l (registered trademark) R976S, and Wacker Co., Ltd. of HDK (registered trademark) H15, HDK (registered trademark) H18, HDK (registered trademark) H20, HDK (registered trademark) H30 and the like are known. As the silica particles, these known materials can be appropriately combined and used.

  Further, as the abrasive particles, other than the above-mentioned abrasive particles containing one or more kinds selected from the most suitable kaolin and silica, commercially available abrasive particles as used in the examples can be used. Specifically, among examples of abrasive particles selected from inorganic compounds, as commercial products of alumina particles, AL1600SG3, AL43M and the like manufactured by Showa Denko KK are known. Aeroxide TiO2 T805 manufactured by Nippon Aerosil Co., Ltd. is known as a commercially available product of titanium oxide particles whose surface is subjected to hydrophobic treatment. FINEX-33W-LP2 and the like manufactured by Sakai Chemical Industry Co., Ltd. are known as commercially available products of surface-combined zinc oxide particles. As a commercially available product of celite particles, Celite (registered trademark) 209 manufactured by IMERYS is known. As a commercial product of heavy calcium carbonate particles, Softon 1800 manufactured by Shiraishi Calcium Co., Ltd. is known. As a commercial product of the light calcium carbonate particles, Brilliant-1500F manufactured by Shiraishi Calcium Co., Ltd. is known. Among the examples of abrasive particles selected from organic compounds, KLT-500F manufactured by Kitamura Co., Ltd. is known as a commercially available product of tetrafluoroethylene resin powder.

  The abrasive particles of the component (C) have an average primary particle diameter in the range of 0.1 to 10,000 nm. In the present invention, the range is more preferably 0.1 to 2,000 nm, further preferably 0.1 to 500 nm, particularly preferably 0.1 to 200 nm, and most preferably 1 to 150 nm. The average primary particle size of the abrasive particles of the component (C) is within the range. It may be a mixture of a plurality of types having different average primary particle diameters as long as it is within the range. When the average primary particle diameter of the abrasive particles is at least the lower limit of the above range, the surface of the base material can be appropriately smoothed during the polishing treatment. On the other hand, when the average primary particle diameter of the abrasive particles is equal to or less than the upper limit of the above range, unevenness does not occur in the coating film after the treatment, and a smooth and excellent-looking coating film can be formed. Here, the average primary particle size means an average value when the diameters (sphere equivalent diameters) of 10 or more primary particles are randomly measured with an electron microscope. When two or more different raw materials are mixed and used as the abrasive particles of the component (C), 10 or more primary particles are randomly extracted from the mixed powder to measure the diameter (sphere equivalent diameter). ) Is treated as the average primary particle size. The term “primary particle” as used herein means a particle in which a plurality of particles are not aggregated. In particular, when the average primary particle diameter of the abrasive particles of the component (C) is in the range of 0.1 to 200 nm, the above effect is more remarkably obtained. Above all, when the average primary particle size of the abrasive particles of the component (C) is in the range of 1 to 150 nm, the above effects are most outstandingly obtained.

  The content of the abrasive particles of the component (C) in the present invention is not particularly limited, but is preferably in the range of 0.01 to 1.0 part by mass with respect to 1 part by mass of the component (A). , More preferably 0.02 to 0.8 parts by mass, further preferably 0.025 to 0.75 parts by mass. When the content is at least the lower limit, the surface treating composition of the present invention can impart sufficient strength and durability to the coating film after curing. On the other hand, when the content is less than or equal to the upper limit, the substrate surface surface-treated using the surface-treating composition of the present invention may form a smooth, glossy, and aesthetically pleasing coating film. It becomes a surface that can be.

  In the present invention, the hardness of the abrasive particles of the component (C) is not specified, but is preferably equal to or less than the hardness of the surface of the base material. The action of the abrasive particles (C) in the present invention is that friction occurs between the particles and the substrate surface during the polishing treatment as described above, and as a result, the surface of the substrate is insufficient to the extent that the polisher alone is insufficient. Can be polished and leveled, and a smooth surface can be formed. Further, by staying in the coating film even after the high molecular weight organic silane of the component (A) is cured to form the coating film, a function of reinforcing the coating film is exerted, and a coating film having excellent durability is formed. Can contribute to.

  Further, the surface treatment composition used in the present invention may further contain an organic solvent containing substantially no water as the component (D) for the purpose of improving workability at the time of construction. The component (D) is a substance that is a liquid at room temperature that can uniformly dissolve and dilute the component (A) and the component (B), and can be used for a few minutes in a state of being applied as a thin film at room temperature and pressure. There is no particular limitation as long as it volatilizes within a few days. Further, in order to maintain the stability of the surface treatment composition during storage, in order to avoid the reaction between the polymeric organosilane of the component (A) and the component (D), the component (D) is substantially used. An organic solvent containing no water is used. Examples of the component (D) include solvent naphtha, n-hexane, isohexane, cyclohexane, petroleum hydrocarbon compound (mixture of C9 alkylcyclohexane), ethylcyclohexane, methylcyclohexane, n-heptane, 2,2,4. 6,6-Pentamethylheptane, isooctane, n-decane, n-pentane, propylcyclohexane, 1,3,5-trimethylcyclohexane, 1,2,3-trimethylcyclohexane, 1,2,4-trimethylcyclohexane, cyclooctane , 1,1,3,5-tetramethylcyclohexane, cyclooctane, isododecane, isononane (mixture of isomers of C9 alkane), toluene, xylene, styrene, isoparaffin, hydrocarbon compounds such as hydrogenated light naphtha hydrocarbon compounds, Zikuro Methane, trichloromethane, dichloroethane, trichloroethane, tetrachloroethane, dichloroethylene, trichloroethylene, tetrachloroethylene, halogenated hydrocarbon compounds such as bromopropane, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, t-butanol, cyclo Alcohol compounds such as hexanol, butanediol, 2-ethyl-1-hexanol and benzyl alcohol, acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, diacetone alcohol and other ketone compounds, ethyl acetate, methyl acetate, butyl acetate, Sec-Butyl acetate, methoxybutyl acetate, amyl acetate, normal propyl acetate, isopropyl acetate, ethyl lactate Ester compounds such as methyl lactate and butyl lactate, diethyl ether, propyl ether, methyl ethyl ether, isopropyl ether, tetrahydrofuran, tetrahydropyran, methyl cellosolve, ethyl cellosolve, butyl cellosolve, 1,4-dioxane, propylene glycol monomethyl ether acetate, etc. Examples thereof include ether compounds and fluorine-based solvents, which may be used alone or as a mixture of plural kinds.

  In the present invention, when the component (D) is contained, the content of the component is preferably in the range of 0.1 to 100 parts by mass, more preferably 0. 2 to 75 parts by mass, more preferably 0.5 to 50 parts by mass, and most preferably 1.0 to 10 parts by mass. When the content is in the range, when the surface treatment is carried out using the surface treatment composition of the present invention, suitable workability is imparted, and thus the coating becomes easy, and the film thickness of the cured coating film is further increased. Would also be appropriate. In particular, when the content of the component (D) is in the range of 1.0 to 10 parts by mass with respect to 1 part by mass of the component (A), the above effect can be more remarkably obtained. Excellent in terms.

  In addition, in the surface treatment composition of the present invention, any additive component which is not included in the components (A) to (D) of the present invention can be appropriately added within a range that does not impair the characteristics thereof. For example, reactive or non-reactive silicone oils, alkoxysilane compounds, long-chain alkyl hydrocarbon compounds, water repellent agents such as fluoroalkyl compounds, adhesion imparting agents such as silane coupling agents, antiaging agents, Rusts, colorants, surfactants, rheology modifiers, ultraviolet absorbers, infrared absorbers, fluorescent agents, fragrances, fillers and the like can be selected according to the purpose.

  The substrate surface to be constructed using the polisher of the surface treatment method of the present invention, automobiles and motorcycles, trains, agricultural vehicles, ships, aircraft, vehicle bodies and windows and rearview mirrors, headlights, Directional indicator lights, side lights, other lighting devices, exterior members such as wheels, roads, piers, bridges, tunnels, protective walls, structural members such as traffic lights, houses and buildings, power plants, solar panels, antennas, gas tanks. , Vending machines, surfaces of buildings and walls such as vinyl houses, and building / living materials such as windows, the surface of the base material is any material such as metal, glass, ceramics, resin, and any of these The present invention can be applied to the surface of a base material having a base material that is a member to be coated (also referred to as a coating film) on the surface of the member. Particularly preferred as a substrate surface to be applied using the polisher of the surface treatment method of the present invention is a surface whose substrate is a previously coated (coating) member, and most preferably it is previously coated. It is a surface whose base material is the member to be coated (coating film). The material of the specific member on the surface of the base material to be applied using the polisher of the surface treatment method of the present invention is a metal steel plate or a resin. A surface having a base material of a member to be coated (coating film) coated on the surface of a member made of these materials is particularly preferable, and it is particularly preferably used for a vehicle body exterior such as an automobile body or bumper. It is desirable to use the surface of the coated steel sheet as a base material (also referred to as a coated steel sheet surface) and / or the surface of a coated resin member as a base material (also referred to as a coated resin member surface).

  The surface treatment method of the present invention is not limited to its use, but when applied to the surface of the steel sheet to be coated and / or the surface of the resin member to be coated which is used for the exterior of the automobile body, a normal coating material is used. It may be used in a vehicle immediately after being painted, that is, in a new vehicle. Also, for vehicles that have been left outdoors for a long time and the paint has deteriorated due to the effects of ultraviolet rays, wind and rain, dust, heat, and other outside air, that is, used vehicles and vehicles that have been exhibited for a long time. You can use it. When used in new vehicles, it is possible to retain the luster and color for a long time and delay fading deterioration by treating the painted surface, such as body and bumper, which has been painted with normal paint. . When used on a vehicle such as a used car, it is possible to restore a state close to that immediately after painting by the treatment by the surface treatment method of the present invention without the need to re-paint the fading body, bumper, or other painted surface. This is a useful effect in a simple operation that the state of the membrane can be protected for a long period of time.

  For the construction using the polisher in the present invention, a conventionally known construction method can be used. Generally, a polisher is an instrument having a driving unit that uses air pressure or electric power as a driving source to perform a periodic operation such as a rotational operation, a reciprocal sliding, and a vibration in an arbitrary direction within a certain range, and is mainly used for polishing. Refers to an instrument. Among the instruments having the same function, the one whose main purpose is grinding is called a sander, but in the present invention, those having these functions are not particularly distinguished and are collectively referred to as a polisher. An abutting member that is in direct contact with the surface of the object is arranged in the drive unit of the polisher. As the contact member, a member called a buff, which is obtained by processing a fiber material such as a natural fiber or a synthetic resin fiber into a shape such as a sponge shape, a brush shape, or a thick band shape, can be used. In addition, a ready-made non-woven fabric, a fibrous material such as a microfiber cloth can be used with or without the buff or the like. The drive unit in which the abutting member of the polisher is arranged is brought into contact with the surface of the object, and the object surface is polished by performing a rotating operation or reciprocal sliding, and a construction process such as smoothing or gloss development is performed. What is performed is referred to as polishing treatment, polishing work, or polishing in this specification. During the polishing process, a liquid material called a polishing agent is impregnated into the contact member for processing. However, conventionally known polishing agents are generally intended to polish the surface of a target object to make it even, and to improve polishing characteristics and workability such as adjustment of frictional resistance. However, it was not focused on forming a coating film having excellent durability. In the surface treatment method of the present invention, by using the surface treatment composition according to the present invention in place of the conventional polishing agent, the workability of polishing can be improved, and at the same time, the gloss and color of the treated coating surface are improved. It becomes possible to form a film having excellent durability that can maintain such an aesthetic appearance for a long period of time.

The polisher that can be used in the present invention is not particularly limited, and known commercial products can be used. The periodic operation of the polisher may be any of rotational operation, reciprocal sliding, and vibration in any other direction, but the rotational operation is particularly preferable from the viewpoint of workability and finish aesthetics. In the present invention, the polisher that performs the rotating operation is also referred to as a rotary polisher, and the rotary polisher can be selected from products having different rotation paths according to the purpose, specifically, a single action polisher, a double action polisher, a gear action polisher, and the like. You can The single-action polisher rotates in a single orbit periodically, and since it can increase the rotation torque, it has high polishing efficiency on the coating surface and can remove dirt such as adhered matters in a relatively short time. . However, there is a feature that a certain degree of skill is required for performing an operation, such as a large amount of frictional heat generated by rotation of the polisher. The double-action polisher rotates periodically on a revolution orbit while rotating periodically. Generally, it is difficult to increase the rotation torque, so that the polishing efficiency of the painted surface is inferior to that of the single-action polisher. However, there is a feature that a relatively high degree of skill is not required in performing an operation, such as less heat generation and less aggression of the contact member during polishing. The gear action polisher rotates periodically on a revolution orbit while vibrating and eccentrically rotating, and has an intermediate characteristic between a single action polisher and a double action polisher. In the present invention, it is particularly preferable to properly use each of the above polishers according to the skill level of the operator. Of these, a single-action or double-action rotary polisher is preferable from the viewpoint of easy control of the polishing force. The rotation speed of the rotary polisher may be any rotation speed according to the purpose, but in the case of large area processing, the rotation speed of 100 to 20,000 rotations / minute (1.67 to 333.33s ⁻¹ ) is generally used. Used. When processing a small area or processing small parts, a smaller polisher may be used, or the processing may be performed at a lower rotation speed. Here, as the drive source of the polisher, any source such as an AC power source, a storage battery, and compressed air may be used depending on the facility at the work site and the ease of work. Regarding the size of the polisher, any size may be used depending on the area and shape of the surface to be processed and the ease of handling by the operator.

  Commercially available single action polishers include PE series such as PE-1400, PE-2010, and PE-2100 manufactured by Ryobi Co., Ltd., SI-2400, SI-2009, SI-2009H, and SI manufactured by Shinano Machinery Co., Ltd. SI series such as -2224, C series such as C-150N and C-201 manufactured by Compact Tool Co., Ltd., and commercially available double action polishers include PED series such as PED-130KT manufactured by Ryobi Co., Ltd. P series such as P-150N and P-185N manufactured by Tool Co., Ltd., commercially available gear action polishers include PEG series such as PEG-130 manufactured by Ryobi Co., Ltd., SI-2415 manufactured by Shinano Kihan Co., Ltd., G-150N manufactured by Compact Tool Co., Ltd. is known. These known devices can be appropriately selected depending on the intended purpose.

  The contact member that can be used in the present invention is also not particularly limited, and a known commercially available product can be used in combination with the above polisher. The abutting member is preferably a sponge-shaped, brush-shaped, thick band-shaped (collectively referred to as buff), non-woven fabric, or microfiber cloth material made of natural fibers or synthetic resin fibers. is there. These materials can be selected from cotton, silk, hemp, wool, polyurethane, polyester (preferably polyethylene terephthalate), polyethylene, polypropylene, nylon, polystyrene and the like. In the present invention, the contact member preferably has a sponge shape or a microfiber cloth, and a suitable material is selected from polyester (preferably polyethylene terephthalate) and nylon. A particularly preferred shape is a microfiber cloth, which refers to a cloth-like material obtained by weaving split-type composite spun fibers having a fiber diameter of 10 μm or less, and particularly a nanofiber having a diameter of 0.1 μm or less. -Also known as cross. Due to such a very fine fiber diameter, it has a vast surface area, which makes it possible to level the surface very smoothly during surface polishing during polishing, and because the liquid agent penetrates uniformly, unevenness can occur. You can work without it. Further, as a characteristic of the microfiber itself, since the fiber fineness has a dimension close to that of the dirt film, it has a feature that the effect of scraping off oil film-like dirt is high.

  The abutting member can be arranged and used in the drive unit of the polisher by an arbitrary method, but is preferably attached to the drive unit of the polisher through a planar member attached to the drive unit of the polisher. It is desirable to combine them and use them. The thickness of the abutting member in the present invention is not limited, but it is preferably in the range of 1 to 70 mm. If the thickness of the abutting member is small, the material may be supplemented by combining the abutting member with an arbitrary material (hereinafter also referred to as a spacer) having an appropriate thickness to improve workability. It is desirable that the total thickness of the contact member and the spacer is within the above range. Here, as the spacer, a member made of the same material as the buff can be substituted. When a spacer is used, the abutting member and spacer connecting means, the abutting member and polisher or pad connecting means, and the abutting member / spacer combined body and the polisher or pad connecting means may be adhesive or adhesive. Adhesive with agent, heat fusion, suturing, hook-and-loop fastener, fastening with rubber or string, covering with a cover, etc. can be selected as appropriate, but from the viewpoint of workability and bond strength, joining with hook-and-loop fastener Especially desirable. Here, when microfiber cloth is used for the contact member, the pad or spacer is made of a flexible material and the back side of the hook-shaped raised portion of the surface fastener is adhered to the surface of the pad or spacer with an adhesive. Then, it is desirable that the hook-shaped raised portion is brought into direct contact with the microfiber cloth and entangled with the looped fibers of the microfiber cloth to bond them together. At this time, it is more preferable to use a material raised on the surface of the microfiber cloth in such a length that it is entangled with the hook-shaped raised portion of the surface fastener. The length of the raised hair is particularly preferably about 0.5 to 10 mm on both the surface fastener raised portion and the surface of the microfiber cloth. Commercially available products of the microfiber cloth are Belima (registered trademark) series of split-type composite spun fiber made of nylon and polyester manufactured by KB Seiren Co., Ltd., and Toraysee of sea-island type composite fiber made of polyester manufactured by Toray Co., Ltd. The registered trademark) series and the like are known and can be appropriately selected from these according to the purpose. The dimensions of these abutting members, pads, spacers and the like may be arbitrarily selected depending on the area and shape of the surface to be processed and the ease of handling by the operator.

  The surface treatment method of the present invention, on the contact member, or by dropping an appropriate amount of the surface treatment composition to the substrate surface that is the surface to be treated, to the substrate surface that is the coating surface of the treatment target By performing the polishing treatment, polishing of the surface of the substrate and application of the surface treatment composition are simultaneously performed. As for the coating amount, 0.01 to 25 ml, preferably 0.1 to 10 ml, is included in the abutting member per polishing, and the surface of the substrate to be treated is polished. When the polishing treatment progresses to a certain extent and the surface treatment composition disappears from the contact member, the surface treatment composition may be dropped again onto the contact member, and the treatment may be performed again. desirable. When the amount of impregnation into the contact member at one time is within an appropriate range, a homogeneous and flat cured coating film can be obtained relatively easily. By the polishing treatment here, stains consisting of oils and fats and solids by the polishing particles in the surface treatment composition are removed by the polishing action, and as the treatment progresses, the stains and the abrasive particles that have fallen off are abutted. Adsorbed to the member. As a result, no stain remains on the base material surface which is the treated coating surface, and instead, only the surface treatment composition which is a component relating to the coating film formation in the present invention is the coated surface group. It is in a state of being attached to the material surface. In a conventionally known method as a technique for forming a coating film having an aesthetic appearance and excellent durability, a two-step method of separately applying a surface treatment agent containing reactive silicone after polishing by polishing treatment is performed. Work was required. However, in the present invention, the step of separately applying the surface treatment agent after performing the polishing treatment can be eliminated, and the productivity can be significantly increased.

  After the composition for surface treatment is applied by a polishing treatment, the composition is allowed to stand at room temperature or under a heating environment to volatilize the volatile component in the case where it contains a volatile component, and in addition to this, a crosslinking curing reaction occurs. Progresses to form a cured coating film on the surface of the base material which is the coating surface. After that, if necessary, a post-treatment of wiping the surface of the cured coating film with a dry cloth or the like is performed, whereby a surface of the cured coating film having a more excellent appearance can be formed. The surface of the cured coating film may be wiped with water, a cloth impregnated with a liquid containing a silicone emulsion or the like, and then dry wiped, which may be performed by a conventionally known post-treatment method. Processing can be performed.

The present invention also relates to a surface treatment composition for use in the surface treatment method. The surface treating composition of the present invention is a composition for applying with the polisher and comprising the following components:
(A) a polymeric organosilane having a reactive group,
(B) reaction catalyst,
(C) Abrasive particles having an average primary particle size of 0.1 to 10,000 nm.

  Each of the above-mentioned components has the same composition as that of the surface-treating composition included in the present invention related to the surface-treating method, and the other arbitrary compositions also conform to this.

  Hereinafter, the effects of the present invention will be described in detail with reference to Examples, but these Examples are not intended to limit the aspects of the present invention.

  The characteristics of the surface treatment composition used in the present invention were evaluated in Examples and Comparative Examples by the following methods. Here, it is desirable that all the properties of the composition suitable for use in forming a film are acceptable. In addition, each surface treatment composition (hereinafter, also simply referred to as “composition”) or treatment agent evaluated in Examples and Comparative Examples of the present invention was prepared by using the raw materials shown in Table 1 at the mass ratios shown in the same table. Prepared by mixing and stirring at 25 ° C. for 20 minutes. The blank column in Table 1 indicates that the raw material was not used.

[Preparation of test piece]
-Evaluation test piece for scratch erasability In evaluating scratch erasability, a test piece reproducing a material having a scratch on the coated surface was prepared by the following method. Black coated plate conforming to JIS G 3141: 2017 (Material: SPCC-SD (cold rolled steel plate), size: 0.8mm x 70mm x 150mm, aminoalkyd black coating on one side after chemical electrodeposition, top clear coat Applied to the coated surface of Asahi Bi-Techno Co., Ltd.), a liquid compound made by Soft 99 Corporation (3000 for scratch removal), a urethane sponge buff for fine mesh as a contact member, a double made by Ryobi Co., Ltd. A smooth surface was formed in advance by performing polishing treatment for 20 seconds at a rotation speed of 8,000 rpm (1335 s ⁻¹ ) using Action Polisher PED-130 and polishing sufficiently. Further, a flannel cloth containing 5 mass% of 7 kinds of the test powder 1 (mud powder of Kanto loam) according to JIS Z 8901: 2006 was applied to the surface to be treated. It was rubbed hard by hand and back and forth, and scratched by mud powder. After that, the surface was thoroughly washed with running water, and the surface was degreased and washed with isopropanol to obtain a scratch erasability evaluation test piece.

-Preparation of Rain Stain Removability Evaluation Test Specimens In order to evaluate the rain stain removability evaluation, a test piece reproducing a material having a rain stain on the coated surface was prepared by the following method. For the test piece, 1 drop (0.05 ml) of tap water was dropped on the scratched side surface of the test piece for evaluation of scratch erasability using a dropper, and the test piece was left for 1 hour in a constant temperature oven set at 50 ° C. to volatilize water. I got it. On the surface, a residue derived from the scaly component of tap water remained to form a virtual rain stain observed as a stain-like state, and used as a test piece for evaluating rain stain removability.

[Evaluation test for scratch erasability and rain stain removal]
As a contact member used for the polishing treatment, a polyurethane sponge buff having a diameter of 180 mm and a thickness of 30 mm (manufactured by Sovereign Co., Ltd., "urethane sponge buff for polisher (for fine)", hereinafter also referred to as "sponge buff") or the sponge buff. Was used as a spacer, and a microfiber cloth adhered thereto (hereinafter, also referred to as “fiber buff”) was used. The latter was prepared by the following procedure.

  Preparation of fiber buff: Polyethylene terephthalate 75% by mass, polyamide 25% by mass, a 0.5 mm thick cloth-like microfiber cloth ("ThreeBond 6649G" manufactured by ThreeBond Co., Ltd.) was cut into a circle with a diameter of 185 mm, This was attached to the polyurethane sponge buff to prepare a fiber buff. The attachment was performed by adhering the back surface of the hook-and-loop raised portion side of the surface fastener to the surface of the sponge buff with an elastomer adhesive, and directly contacting the microfiber cloth to the surface of the surface fastener raised portion.

The surface treatment composition shown in each of Examples 1 to 12 and Comparative Example 1 described later was dropped onto the surface of each of the contact members by a 3 g (about 2.5 ml) dropper to lightly impregnate them. The contact member is arranged in the drive part of a double action polisher PED-130 manufactured by Ryobi Co., Ltd., and 8000 rpm (1335s) for the coating surface of each of the scratch erasing evaluation test piece and the rain stain removing evaluation test piece. Polishing treatment was performed for 20 seconds at a rotation speed of ^-1 ). Within 5 minutes after the treatment, each treatment surface was wiped evenly with a clean and clean microfiber cloth (ThreeBond 6649G) to perform each evaluation. On the other hand, the construction of the test pieces in Comparative Examples 2 and 3 was performed as follows. The sponge buffs each impregnated with the surface treatment composition or the treatment agent were rubbed against the coated surface of each test piece by hand for 20 seconds without using a polisher, and then, Within 5 minutes, the surface was treated with a dry and clean microfiber cloth (Threebond 6649G).

[Evaluation criteria for scratch erasability and rain stain removal]
-Evaluation of scratch erasing property The coating surface of the scratch erasing property and rain stain removing property evaluation test was evaluated by state comparison observation before and after the evaluation test. As the observing means, the residual state of scratches was visually confirmed and the color difference was compared by using a spectrocolorimeter. As the spectrocolorimeter, CM-2600d manufactured by Konica Minolta Co., Ltd. is used, the measurement diameter is 8 mm, the measurement mode SCE, the visual field is 10 °, and the “CIE standard light source D65” is the measurement condition, and the color difference ΔL value before and after the evaluation test is calculated. It was measured. The results are also shown in Table 1 according to the following evaluation criteria. Here, the color difference ΔL value is an index of whiteness, and since the scratches on the coating surface are erased by the surface treatment method of the present invention, diffuse reflection due to the scratches is reduced, and thus the value becomes small, that is, It is judged that the scratch erasability increases as the whiteness decreases. It should be noted that, by visual observation, in any of the evaluations using the surface treatment composition, the state after the test had a clear reduction in large deep scratches and an increase in gloss:
Evaluation result is acceptable ... Range of −3.0 <ΔL ≦ −2.0, expressed as ◯ Evaluation result is good ... Range of 4.0 <ΔL ≦ −3.0, expressed as ⊚ The evaluation result is excellent ... A range of −6.0 <ΔL ≦ −4.0, and ⊚.

・ Evaluation of removability of rain stains The state of virtual rain stains present on the coated surface of the test piece for evaluation of removability of rain stains subjected to the above-mentioned scratch erasing and rain stain removability evaluation test is compared with the state before the evaluation test by visual observation. It evaluated by doing. The results are also shown in Table 1 according to the following evaluation criteria. In addition, if the area of the virtual rain stain is reduced / disappeared in the range of 30% or more and 100%, it is judged as practicable and passed, and the area of the virtual rain stain is reduced by less than 30%, and there is no change from before application. If it was not practical, it was rejected.

The evaluation result is remarkably unacceptable (failure): no change from before application is seen, the evaluation result expressed as x is unacceptable (failure): The area of the virtual rain stain decreases within the range of less than 30%, The evaluation result expressed as △ is good (pass) ... The area of the virtual rain stain decreases in the range of 30% or more and less than 100%, or disappears by 100%, but when observed from various angles Traces of rain stains are slightly observed, the evaluation result marked as ○ is excellent (pass) ... 100% of the area of virtual rain stains disappears, and no traces are observed even when observed from various angles, ◎ Was written as.

[Water repellent evaluation test and the evaluation criteria]
Each test piece for evaluation of scratch erasability and rain stain removal, which had been subjected to polishing treatment, was allowed to stand for 1 day in an environment of 25 ° C., and thereafter, pure water (1 μL) was applied to the surface to be treated of the test piece. 2) was measured using a contact angle meter “MSA” manufactured by KRUSS, which can measure the contact angle fully automatically. The results are shown in Table 1 together with this as the initial contact angle (°). The characteristic value of the film having excellent water repellency (antifouling property) is a value of approximately 95 or more.

[Durable water repellency evaluation test and the evaluation criteria]
Each test piece for evaluation of scratch erasability and rain stain removal was subjected to a polishing treatment, and the test piece for scratch erasability evaluation was allowed to stand for 7 days in an environment of 25 ° C. After that, a friction object was placed on the surface to be treated of the test piece at a speed of 30 times / minute, a moving distance of 100 mm, and a load of 500 g using a simple friction tester (manufactured by Imoto Seisakusho Co., Ltd.), and 100 times. Wear was applied by making a stroke, and the water contact angle on the coated surface after the abrasion treatment was measured as the contact angle (°) after the durability test to evaluate the durability and water repellency. Here, the friction material used in the test was a dry and clean cloth having a width of 40 mm (a water absorbing cloth made of cellulose / cotton composite fiber, "ThreeBond 6644E" manufactured by ThreeBond Co., Ltd.), which was sufficiently filled with distilled water. It was wound around a stainless steel cylinder having a diameter of 20 mm. This was installed so that the axis of the cylinder was oriented in the direction orthogonal to the sliding direction, and the friction object was slid. After the sliding treatment, it was allowed to stand at room temperature for 30 minutes to be dried, and the contact angle after the durability test, which was measured by the same method as the water repellency evaluation test, is also shown in Table 1. The characteristic value of the coating film having excellent durable water repellency (durable antifouling property) is about 90 or more.

  The following materials were used as the raw materials contained in the composition for surface treatment or the treating agent in each of Examples and Comparative Examples.

[Surface treatment composition]
<Component (A): Commercially available polymeric organosilane having a reactive group>
KR-500: In the above formula (1), R ⁴ and R ⁵ are both partially hydrolyzed condensates of alkoxysilane compounds having a methyl group, a compound having a weight average molecular weight of about 1,000, and a reaction at 25 ° C. Reactive silicone oligomer having a viscosity of 25 mm ² s ^-1 , manufactured by Shin-Etsu Chemical Co., Ltd. X-40-9250: In the above formula (1), R ⁴ and R ⁵ are both a part of an alkoxysilane compound having a methyl group. Hydrolytic condensation product having a weight average molecular weight of about 2,100 and a kinematic viscosity at 25 ° C. of 160 mm ² s ⁻¹ , manufactured by Shin-Etsu Chemical Co., Ltd. X-40-2327: Formula (1) ^in), R 4, a partial hydrolytic condensate of ^{R 5} is alkoxy silane compound both methyl groups, reactive silicon kinematic viscosity at 25 ° C. is 0.9 mm ² s ^-1 Reaction mixture which is a component oligomer (B); a mixture containing 30% by mass of X-40-2309A, manufactured by Shin-Etsu Chemical Co., Ltd.-X-22-170DX: carbinol-modified dimethyl silicone oil at one end (polydimethyl) Siloxane), kinematic viscosity at 25 ° C. is 40 mm ² s ⁻¹ , manufactured by Shin-Etsu Chemical Co., Ltd. A-1: Dimethyl silicone oil containing silanol groups at both ends and having a viscosity at 25 ° C. of 5,100 mPa · s.

<Component (B): commercially available reaction catalyst>
-DX9740: Aluminum alkoxide compound, Shin-Etsu Chemical Co., Ltd.-D25: Organic titanium compound, Shin-Etsu Chemical Co., Ltd.-X-40-2309A: Phosphate, Shin-Etsu Chemical Co., Ltd.

<Component (C): a commercially available abrasive particle having an average primary particle size of 0.1 to 10,000 nm>
-Satintone (registered trademark) 5HB: manufactured by BASF, unbaked kaolin particles, average primary particle size 0.8 μm
-Translink (registered trademark) 77: manufactured by BASF, surface-hydrophobicized calcined kaolin particles Average primary particle size 0.8 μm
-AL1600SG3: Showa Denko Co., Ltd., alumina particles average primary particle size 0.5 μm indefinite form-AL43M: Showa Denko Co., Ltd., alumina particles average primary particle size 1.5 μm indefinite form-Aerosil (registered trademark) R972: Nippon Aerosil Co., Ltd., average primary particle size 16 nm, fumed silica particles whose surface is hydrophobically treated with dimethyldichlorosilane Aerosil (registered trademark) R976: Nippon Aerosil Co., Ltd., average primary particle size 7 nm, surface is hydrophobic with dimethyldichlorosilane Treated fumed silica particles-Aerosil (registered trademark) R805: manufactured by Nippon Aerosil Co., Ltd., average primary particle size 12 nm, fumed silica particles whose surface is hydrophobically treated with octylsilane-Aerosil (registered trademark) 200: Nippon Aerosil Co., Ltd. , Average primary particle diameter 12 nm, surface-untreated fumed silica particles Aerosil (registered trademark) RX380S: manufactured by Nippon Aerosil Co., Ltd., average primary particle diameter 7 nm, fumed silica particles whose surface is hydrophobically treated with hexamethyldisilazane Aeroxide TiO2 T805: Nippon Aerosil Co., Ltd., average primary particle size 40 nm, titanium oxide particles whose surface has been hydrophobically treated with octylsilane. FINEX-33W-LP2: Sakai Chemical Industry Co., Ltd. surface composite treated zinc oxide particles, average primary particle. Diameter 35nm
-KLT-500F: tetrafluoride ethylene resin powder manufactured by Kitamura Co., Ltd. Average primary particle size 1 μm
-Celite (registered trademark) 209: manufactured by IMERYS, Celite particles average primary particle size 8 μm
・ Softon 1800: Shiraishi Calcium Co., Ltd., heavy calcium carbonate particles average primary particle size 1.25 μm
-Brilliant-1500F: Light calcium carbonate particles manufactured by Shiraishi Calcium Co., Ltd. Average primary particle size 150 nm.

<Component (D): Commercial product of organic solvent containing substantially no water>
-Swaclean 150: C9 alkylcyclohexane mixture, initial boiling point 145 ° C, dry point 170 ° C, manufactured by Maruzen Petrochemical Co., Ltd.-Marcazole R: 2,2,4,6,6-pentamethylheptane, boiling point 177 ° C, Maruzen Petrochemical Co., Ltd.-Kyowasol C-900: Isononane (mixture of isomers of C9 alkane), initial boiling point 131 ° C, dry point 141 ° C, manufactured by KH Neochem Co., Ltd.-Exxsol (registered trademark) D40: hydrogenated light Organic solvent composed of naphtha hydrocarbon compound, initial boiling point 166 ° C, dry point 191 ° C, manufactured by ExxonMobil. Isopar (registered trademark) E: organic solvent composed of isoparaffin, initial boiling point 114 ° C, dry point 139 ° C, ExxonMobil. Manufactured by n-Propanol: Fuji Film Wako Pure Chemical Industries, Ltd. Reagent: Solve 55: Fluorine-based solvent Sorubekkusu manufactured · PMA Ltd.: Propylene glycol monomethyl ether acetate, Sankyo Chemical Co., Ltd..

[Treatment Agent: Material Used in Comparative Example 2]
Commercially available semi-solid wax containing abrasive: compound wax manufactured by Rinrei Co., Ltd. For dark & metallic cars.

  Note 1) The unit of the numerical value showing the content of the raw material of each component of the compositions of Examples 1-1 and 1-2 of Table 1-1 and Table 1-2 is "mass%".

  Note 2) The blank part of the raw material of each component of the compositions of Examples 1-1 and 1-2 of Table 1-1 and Table 1-2 indicates that the raw material is not contained. That is, the content of the raw material in the blank portion is 0% by mass.

  Note 3) The ingredients (D) of the compositions of Examples 1 to 4 and the ingredients (C) and (D) of the composition of Comparative Example 1 in Tables 1-1 and 1-2 contain respective raw materials. Indicates that there is no. Therefore, the total content of the components (C) and (D) is expressed as "0" (mass%).

  Note 4) In Comparative Examples 2 and 3 of Table 1-2, instead of expressing the content of the raw material of each component of the composition, the treating agent (Comparative Example 2) or the composition and its construction method (Comparative Example 3) ) Was described.

  Note 5) "X-40-2327" product of component (A) of Example 8 in Table 1-1: 9 parts by mass of the reaction catalyst "X-40-2309A" of component (B) in 30 parts by mass. Included.

[Study of polisher condition and buff type]
Using the surface-treating composition described in Example 5, test pieces were polished under various conditions shown in Examples 13 to 20 of Table 2 and Comparative Example 4. As the test body, the entire vehicle body surface coating part of an automobile (manufactured by Honda Motor Co., Ltd., Air Wave (black, continuously riding for a period of 2007 to 2016, mileage 106,000 km)) used as a passenger car was used. Using. The automobile was in a state where a large amount of fine scratches and rain stains were uniformly observed over the entire body surface coating portion. The coated portion on the surface of the vehicle body was divided into a size of 30 cm × 30 cm, and each section was subjected to the polishing treatment with the above-mentioned composition for surface treatment under the conditions shown in Table 2. By the way, after the lapse of 5 minutes after the treatment, the surface was wiped evenly with a clean and dry microfiber cloth (Threebond 6649G), and the following items were evaluated for each portion after the treatment, and the results are shown in Table 2. It is described inside. The types of polishers and product names used in the evaluation are as follows.

・ Ryobi PED-130: Ryobi Co., Ltd., electric double action polisher ・ Makita PV7001C: Makita Co., Ltd., electric single action polisher ・ Ryobi PEG-130: Ryobi Co., electric gear action polisher ・ Compact Tool P-150N: Compact Tool Co., Ltd., electric double action polisher ・ Compact Tool MODEL942: Compact Tool Co., Ltd., air driven mini double action sander ・ Compact Tool MODEL813: Compact Tool Co., Ltd., air driven orbital sander.

  The above "electric" and "pneumatic drive" indicate whether the drive source is electric power or pneumatic pressure, and "single action", "double action" and "gear action" indicate the above-mentioned drive systems. “Mini” means that the size of the drive unit is smaller than that of a normal drive unit, and “Orbital sander” means that the drive system uses an eccentric motion while vibrating.

[Polishing efficiency]
The polishing efficiency was evaluated by the time required until scratches in the treated portion of the test body were hardly observed by visual observation. The results are also shown in Table 2 according to the following evaluation criteria:
The evaluation result is not possible ... takes more than 5 minutes, the evaluation result expressed as x is acceptable ... The range of 1 to 5 minutes, the evaluation result expressed as o is good ... Less than 1 minute, and is expressed as ⊚.

  The evaluation is a process in which when the scratches on the treated part are almost invisible, the surface state is observed in detail by wiping with a dry cloth, and when the remaining fine scratches are confirmed, the polishing process is performed again. The evaluation was carried out by the total time of the actual polishing treatment.

[Ease of work]
It was evaluated whether an actual worker could easily control the polisher to keep the proper position for coating without damaging the vehicle body. The results are also shown in Table 2 according to the following evaluation criteria:
Evaluation result is good ... When the effort required for control is small and it is difficult to feel fatigue, the evaluation result marked with ◎ is possible ... When the labor required for control is large and it is easy to feel fatigue, but control is possible. The evaluation result indicated as is not possible ... When the control is impossible or when the labor required for the control is remarkably large and the fatigue is large, it is expressed as x.

[Water repellency]
For 1 hour after the treatment, 10 ml of tap water was sprayed onto the coated surface treated under each of the above conditions by hand spray, and the state of water repellency was visually observed and evaluated. The results are also shown in Table 2 according to the following evaluation criteria:
Evaluation result is good: If the shape of the water droplets at the jetted portion is circular and the droplets are dropped quickly, it is judged as excellent water repellency, and the evaluation result marked with ⊚ is not possible ... The water droplet shape of the sprayed portion was not circular, and those that did not drip immediately were judged to be inferior in water repellency and marked as x.

  In Table 2, the same sponge buffs and fiber buffs as the contact member were the same as those in Table 1 above. However, the fiber buffs marked with (*) are those in which the thickness of the base polyurethane sponge is 10 mm instead of 30 mm.

  From the results in Table 1, when the surface treatment method of the present invention of Examples 1 to 4 is used, that is, when the surface treatment composition is applied by polishing treatment, the scratch erasing property and the rain stain removing property are good, and the initial stage It was also found that the contact angles after the endurance test and the endurance test were sufficient values. From this, it was confirmed that the antifouling property and the durable antifouling property were also excellent. On the other hand, as in Comparative Examples 1 and 2, in the case of the surface treatment method which does not use the surface treatment composition of the present invention, the ability to remove rain stains is insufficient, so that the ability to sufficiently remove stains is insufficient. You can see that Further, in Comparative Example 2, since the contact angle after the durability test is insufficient, it can be seen that the durability and antifouling property do not satisfy the required characteristics. As in Comparative Example 3, when the surface treatment method of the present invention is not used, the ability to remove rain stains is insufficient, and thus it is found that the ability to sufficiently remove stains is insufficient. According to Examples 5 to 12, it can be confirmed that the composition for surface treatment used in the present invention can be used even if it further contains (D), and (A), ( It can be seen that even if the respective components B), (C) and (D) are combined, within the scope of the present invention, each property exhibits excellent performance with high performance and well-balanced performance. .

  Furthermore, from the results of Table 2, according to Examples 13 to 20, when the surface treatment method of the present invention is used, polishers of various types and conditions can be used for equipment and structures represented by automobile surface coating surfaces. Alternatively, it was confirmed that a contact member such as a buff can be applied. This shows the usefulness of the surface treatment method of the present invention. On the other hand, when the surface treatment method of the present invention is not used as in Comparative Example 4, the water repellency is not a problem, but the polishing efficiency and workability are both insufficient, and it is not a method that can improve work efficiency. confirmed.

  Note that FIG. 1 shows photographs of the automobile surface coating portion before and after the treatment in Example 14, where a is the state before the treatment and b is the state after the treatment. The white dots in the photograph are reflections of the LED light for visual inspection. The state a, which is the state before treatment, has many small scratches on the whole, and it is in a state where it is totally hazy due to diffuse stains on the surface due to spot-like stains and small scratches, and the contour of the reflection of the LED light is It is recognized that it is unclear and lacks image clarity. In the state b after the treatment, the small scratches become invisible, and irregular reflection is suppressed, so that the surface state is more jet black and has a deep glossy surface. Further, it can be seen that the contour of the LED light is clear and the image clarity is improved.

  The surface treatment method of the present invention improves the aesthetics by a simple construction with less dependency on the ability of an operator to the surface of a base material used for automobile bodies, various building structure members, equipment members, etc. It is extremely useful because it can realize the formation of a coating having excellent durability at one time.

  This application is based on Japanese Patent Application No. 2017-117664 filed on Jun. 15, 2017, the disclosure content of which is incorporated by reference in its entirety.

Claims (16)

A method of performing polishing and film-forming treatment on a substrate surface,
(A) a polymeric organosilane having a reactive group,
(B) a reaction catalyst,
(C) Abrasive particles having an average primary particle size of 0.1 to 10,000 nm,
A surface treatment method, which comprises applying a surface treatment composition comprising: and using a polisher. With respect to 1 part by mass of (A),
The content of (B) is 0.001 to 0.5 parts by mass,
The surface treatment method according to claim 1, wherein the content of (C) is 0.01 to 1.0 part by mass.   The surface treatment method according to claim 1, wherein the (A) is an organopolysiloxane having a reactive group.   The surface according to any one of claims 1 to 3, further comprising (D) an organic solvent substantially free of water in a range of 0.1 to 100 parts by mass with respect to 1 part by mass of (A). Processing method.   The surface treatment method according to claim 4, wherein the content of (D) is in the range of 1.0 to 10 parts by mass with respect to 1 part by mass of (A).   The surface treatment method according to claim 1, wherein the reactive group of (A) is a hydrolysis-polymerizable reactive group.   The surface treatment method according to claim 1, wherein the average primary particle diameter of (C) is in the range of 0.1 to 200 nm.   The surface treatment method according to claim 1, wherein the average primary particle size of (C) is in the range of 1 to 150 nm.   The surface treatment method according to claim 1, wherein the (C) is abrasive particles containing an inorganic compound.   The surface treatment method according to any one of claims 1 to 9, wherein the (C) is abrasive particles containing silica particles whose surface is hydrophobically treated.   The surface treatment method according to any one of claims 1 to 10, wherein a surface to be applied with the polisher is a surface to be coated which is previously coated.   The surface treatment method according to claim 11, wherein the pre-painted surface to be coated is a surface of a steel sheet to be coated and / or a surface of a resin member to be coated used for the exterior of a car body.   The surface treatment method according to claim 1, wherein the polisher is a rotary polisher.   The surface treatment method according to claim 13, wherein the rotary polisher is a single-action or double-action rotary polisher.   The surface treatment method according to any one of claims 1 to 14, wherein the construction uses a polisher provided with a contact member made of microfiber. (A) a polymeric organosilane having a reactive group,
(B) a reaction catalyst,
(C) Abrasive particles composed of an inorganic compound having an average primary particle size of 0.1 to 10,000 nm,
A surface-treating composition for polisher construction, comprising: