JP7026491B2 - An oil-sliding surface treatment composition, a member having a coating film obtained by drying the oil-sliding surface treatment composition, and equipment using the member. - Google Patents

Description

The present invention relates to an oil-sliding surface treatment composition, a member having a coating film obtained by drying the oil-sliding surface treatment composition, and equipment in which the member is used.

When oil or oil smoke adheres to cooking equipment such as kitchen hoods, machine tools such as cutting machines, sewage treatment equipment, air conditioning equipment, and various transportation / transportation equipment, the appearance deteriorates, hygiene deteriorates, and , The original function may be deteriorated. Therefore, it is necessary to remove the adhering oil, but conventionally, various efforts have been made to facilitate the removal of the oil.

So far, many methods for suppressing oil adhesion by coating a material having a low surface energy have been put into practical use. For example, Patent Document 1 describes a copolymer of an acrylic and / or methacrylic monomer containing a perfluoroalkyl group having 6 carbon atoms as a component (a) and a monomer having a functional group as a component (b). As a component (c), a water-repellent oil-repellent agent, an antifouling processing agent, a mold-removing agent, a lubricant, a flux creep-up inhibitor, a moisture-proof coating agent, an oil barrier, etc., which are made of a fluorosolvent capable of dissolving the polymer. A fluorine-based surface modification composition is described (claim 1).

In recent years, many non-wetting surfaces based on the lotus (lotus leaf) effect have been studied. The Lotus effect is an effect in which extremely high liquid repellency can be obtained by subjecting a finely processed surface to a liquid repellent treatment. As a result, the attached oil becomes ball-shaped, and the oil flows down, so that it is considered that an antifouling function can be obtained. For example, Patent Document 2 has a smooth surface having primary unevenness formed from fine particles having a particle size of 100 nm or more and secondary unevenness formed from fine particles having a particle size of 7 to 90 nm, and is further coated with an oil repellent. A superhydrophobic coated article having a superhydrophobic property having a contact angle of 150 ° or more with respect to a low surface tension liquid of 22.6 mN / m or less is described (claim 3).

Japanese Unexamined Patent Publication No. 2009-057530 Japanese Unexamined Patent Publication No. 2011-14625

However, in the method of improving the water-repellent and oil-repellent performance of the surface by using the fluorine-based surface modification composition of Patent Document 1, it is possible to prevent the adhering oil from permeating or sticking, and it is easy to wipe and wash. However, it is not possible to suppress the adhesion of oil itself.

Further, in the superhydrophobic coated article of Patent Document 2, primary irregularities are formed on the surface of the article to be coated with fine particles having a particle size of 100 nm or more, and secondary irregularities are formed from fine particles having a particle size of 7 to 90 nm to form an oil repellent. It needs to be coated, and surface treatment is troublesome. Further, if the fine irregularities on the surface are deteriorated due to wear or the like, the Lotus effect is lost and superhydrophobicity cannot be obtained.

By the way, conventionally, liquid repellency such as water repellency and / or oil repellency has been emphasized as an index of antifouling property, and water repellency is determined by the size of the contact angle with water and oil repellency is determined by the size of the contact angle with n-hexadecane. However, each was often evaluated.

However, as a result of the study by the present inventor regarding oil stains, since the oil that causes stains has a low surface tension, it is possible to prevent oil from adhering even on a surface having a large contact angle with n-hexadecane and having high oil repellency. Turned out to be difficult.

Thus, the present inventor considers that it is practically important that even if the oil that causes stains adheres to the surface, the oil flows down with a slight inclination and the oil does not remain adhered to the surface. Therefore, we decided to focus on oil-sliding properties rather than oil-repellent properties.

Therefore, an object of the present invention is to provide an oil-sliding surface treatment composition capable of imparting excellent oil-sliding property to a surface by a simple treatment, and a member and equipment having a surface having excellent oil-sliding property.

As a result of diligent studies to achieve the above object, the present inventor has a structural unit derived from the compound represented by the specific formula (a) and a configuration derived from the compound represented by the specific formula (b). A lubricating oily surface-treated composition containing a copolymer containing a unit and a solvent, wherein the mass a of the structural unit derived from the compound represented by the formula (a) in the copolymer is the formula (a). ) And the structural unit derived from the compound represented by the formula (b) have a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b. It is possible to impart excellent oil-sliding property to the surface by a simple treatment, and further, a member having a coating film formed by drying the oil-sliding surface treatment composition on at least a part of the surface and equipment using the member. Has completed the present invention by knowing that it has a surface having excellent oil-sliding properties.

That is, the present invention is the following [1] to [9].
[1] An oil-like surface treatment composition containing a copolymer containing a structural unit derived from a compound represented by the following formula (a) and a structural unit derived from a compound represented by the following formula (b), and a solvent. It ’s a thing,
In the following copolymer, the mass a of the structural unit derived from the compound represented by the following formula (a) is represented by the structural unit derived from the compound represented by the following formula (a) and the following formula (b). An oil-like surface treatment composition having a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound.
CH ₂ = CR ^a1 -COO-Rf ¹ (a)
CH ₂ = C (CH ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : A polyfluoroalkyl group having 2 to 3 carbon atoms in the main chain and a CF ₃ terminal group.
[2] The oil-sliding surface treatment composition according to the above [1], wherein the compound represented by the above formula (a) is a compound represented by the following formula (a1).
CH ₂ = C (R ^a1 ) -COO-CH ₂ -CF ₃ (a1)
In equation (a1),
R ^a1 : Hydrogen atom or methyl group.
[3] The above-mentioned copolymer further contains a structural unit derived from the compound represented by the following formula (c).
In the copolymer, the mass a of the structural unit derived from the compound represented by the above formula (a) is represented by the structural unit derived from the compound represented by the above formula (a) and the above formula (b). The oil-lubricating surface treatment composition according to the above [1] or [2], wherein the mass percentage with respect to the total mass a + b of the constituent units derived from the compound is 25% by mass to 70% by mass.
CH ₂ = CR ^c1 - ^Q1 -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000.
[4] In the above-mentioned copolymer, a structural unit derived from the compound represented by the above formula (a), a structural unit derived from the compound represented by the above-mentioned formula (b), and the above-mentioned formula (c). The slippery surface treatment composition according to the above [3], wherein the total mass of the structural units derived from the compound is 40% by mass or more of the total mass of the copolymer.
[5] In the above-mentioned copolymer, the total mass of the structural unit derived from the compound represented by the above formula (a) and the structural unit derived from the compound represented by the above-mentioned formula (b) is the total mass of the above-mentioned copolymer. The lubricating oily surface-treated composition according to the above [3] or [4], which is 50% by mass or more of the total mass.
[6] The oil-sliding surface treatment composition according to any one of the above [1] to [5], wherein the copolymer further contains a structural unit derived from a compound represented by the following formula (e). ..
CH ₂ = CR ^e1 -Q ³ -W (e)
During the ceremony
R ^e1 : Hydrogen atom or methyl group,
Q ³ : Single bond or divalent linking group,
W: Hydroxyl group, carboxy group or C1-C3 alkoxysilyl group.
[7] The oil-sliding surface treatment composition according to any one of the above [1] to [6], wherein the copolymer further contains a structural unit derived from a compound represented by the following formula (d). ..
(CH ₂ = CR ^d1 -COO-) _n Q ² (d)
In equation (d),
R ^d1 : Hydrogen atom or methyl group,
n: an integer of 2 or more,
^Q2 : Concatenated group of n-value.
[8] A member having a film formed by drying the lubricating oily surface treatment composition according to any one of the above [1] to [7] on at least a part of the surface.
[9] Equipment in which the member according to the above [8] is used.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide an oil-sliding surface treatment composition capable of imparting excellent oil-sliding property to a surface by a simple treatment, and a member and equipment having a surface having excellent oil-sliding property.

In the present invention, the "surface treatment composition" may be referred to as a "surface treatment agent".

Further, in the present invention, the compound represented by the formula (x) may be referred to as "compound (x)". For example, the compound (a), the compound (b) and the compound (a1) are a compound represented by the formula (a), a compound represented by the formula (b) and a compound represented by the formula (a1), respectively. means.

Further, in the present invention, the structural unit derived from the compound represented by the formula (x) may be referred to as a structural unit (x). For example, the structural unit (a), the structural unit (b), and the structural unit (a1) are derived from the structural unit derived from the compound represented by the formula (a) and the compound represented by the formula (b), respectively. It means a structural unit and a structural unit derived from the compound represented by the formula (a1).

Further, in the present invention, the range represented by using "-" means a range including both ends thereof. For example, for a character string arranged in alphabetical order such as "A, B, C, D, E, F, G, H", "BF" is a character from "B" to "F", that is, "F". B, C, D, E, F "represents.

Further, in the present invention, "arene" means a monocyclic or polycyclic aromatic hydrocarbon, and "aryl group" means removing one hydrogen atom of one ring carbon atom from the arene. It means a monovalent group produced, and "arylene group" means a divalent group generated by removing one hydrogen atom of each of two ring carbon atoms from an arene.

Further, in the present invention, "heteroarene" replaces one or more of methine (-CH =) and / or vinylene (-CH = CH-) contained in arene with divalent or trivalent heteroatoms, respectively. A heterocyclic compound in which the properties of a continuous π-electron system as an aromatic system and the number of out-of-plane π-electrons corresponding to Huckel's law are maintained, which is formally derived by the term "heteroaryl group". A monovalent group generated by removing one hydrogen atom from any one ring atom of a heteroarene, and "heteroarylene" is one each from any two ring atoms of the heteroarene. It is a divalent group generated by removing the hydrogen atom of.

Further, in the present invention, the "divalent alicyclic group" is a divalent group generated by removing one hydrogen atom of each of two ring carbon atoms from a saturated or unsaturated alicyclic compound. To say.

Further, in the present invention, the "alkylene group" means an "alkandyl group", the "alkenylene group" means an "alkendyl group", and the "alkynylene group" means an "alkyndiyl group". Further, unless otherwise specified, the alkylene group, the alkenylene group and the alkynylene group may be branched or unbranched, respectively.

Further, in the present invention, "(meth) acrylic group" means "acrylic group" and "methacrylic group", and "(meth) acryloyl group" means "acryloyl group" and "methacrylic group", and "((meth) acryloyl group". "Meta) acryloyloxy group" means "acryloyloxy group" and "(meth) acryloyloxy group".

[-CO-]
Further, in the present invention, a divalent group (carbonyl group) represented by the following chemical formula may be referred to as "-CO-". However, " _* " and " ^* " in the following chemical formulas represent bonding points with other atoms or atomic groups.

[-SO _2- ]
Further, in the present invention, a divalent group (sulfonyl group) represented by the following chemical formula may be referred to as "-SO _2- ". However, " _* " and " ^* " in the following chemical formulas represent bonding points with other atoms or atomic groups.

[-N (R)-]
Further, in the present invention, a divalent group (imino group) represented by the following chemical formula may be referred to as "-N (R)-". However, in the following chemical formula, " _* " and " ^* " represent a bond point with another atom or an atomic group, and "R" represents a hydrogen atom or a monovalent group.

[-COO-, -OCO-]
Further, in the present invention, the divalent groups (carbonyloxy group and oxycarbonyl group) represented by the following chemical formulas may be referred to as "-COO-" and "-OCO-", respectively. However, " _* " and " ^* " in the following chemical formulas represent bonding points with other atoms or atomic groups.

[-COS-, -SCO-]
Further, in the present invention, the divalent groups represented by the following chemical formulas may be expressed as "-COS-" and "-SCO-", respectively. However, " _* " and " ^* " in the following chemical formulas represent bonding points with other atoms or atomic groups.

[-PO (OR)-, -P (= O) (OR)-]
Further, in the present invention, the divalent group represented by the following chemical formula may be expressed as "-PO (OR)-" or "-P (= O) (OR)-". However, in the following chemical formulas, " _* " and " ^* " represent bond points with other atoms or atomic groups, and "R" represents a monovalent group.

[Liquid-free surface treatment composition]
The lubricating oil-like surface treatment composition of the present invention contains a copolymer containing the structural unit (a) and the structural unit (b), and a solvent.

The oil-sliding surface treatment composition of the present invention can impart excellent oil-sliding property to the surface by a simple treatment.

<Sliding / oil-sliding / water-sliding>
In the present invention, the slipperiness is defined as the slipperiness in which, when a 10 μL droplet is placed on a slope having a certain inclination or more, both ends of the droplet flow while maintaining a certain interval. There is. The fact that the droplets flow down while the distance between both ends of the droplets continues to widen (flows down like rain streaks) does not correspond to sliding down. If the droplet is water, it is defined as water-sliding, and if the droplet is oil, it is defined as oil-sliding.
As for the oil-sliding property, it is preferable that the rolling angle is less than 30 degrees, and it is judged that the sliding property is good when the falling angle is less than 20 degrees, and it is extremely good when the falling angle is less than 10 degrees.

<< Measurement method of falling angle >>
The glass plate is immersed in the surface treatment composition at room temperature for 1 minute, taken out, and then dried at 120 ° C. for 5 minutes to prepare a glass plate with a surface treatment film.
10 μL of commercially available salad oil (edible rapeseed oil, manufactured by Nisshin Oillio Co., Ltd.) is applied to this glass plate with a surface-treated film, and the falling angle is measured using an automatic contact angle meter OCA-20 (manufactured by Data Physics Co., Ltd.). The moving speed of the falling angle when measuring the falling angle is about 1.6 degrees / sec, and the angle when the droplet starts moving is defined as the falling angle (degrees).

<Copolymer>
The copolymer includes a structural unit (a) and a structural unit (b), and is further selected from the group consisting of the structural unit (c), the structural unit (d), the structural unit (e), and the structural unit (f). It may contain one or more kinds to be made.

<< Structural unit (a) and structural unit (b) >>
The structural unit (a) and the structural unit (b) will be described.

-Structure unit (a)
The structural unit (a) contained in the copolymer is a structural unit derived from the compound [compound (a)] represented by the following formula (a).
CH ₂ = CR ^a1 -COO-Rf ¹ (a)
In formula (a),
R ^a1 : A hydrogen atom or a methyl group,
Rf ¹ : A polyfluoroalkyl group having 2 to 3 carbon atoms in the main chain and a CF ₃ terminal group.

In the above-mentioned copolymer, the above-mentioned structural unit (a) may be a structural unit derived from one kind of compound (a) or may be a structural unit derived from two or more kinds of compounds (a). ..

・^Ra1
In the above formula (a), the above ^Ra1 is not particularly limited as long as it is a hydrogen atom or a methyl group, but is preferably a methyl group. When the ^Ra1 is a methyl group, the oil-sliding property of the oil-sliding surface treatment composition of the present invention becomes better.

・ Rf ¹
In the above formula (a), the above Rf ¹ is not particularly limited as long as it is a polyfluoroalkyl group having a main chain having 2 to 3 carbon atoms and a terminal group of CF ₃ .

-Carbon number of main chain In the above Rf ¹ , the "carbon number of the main chain" and the "carbon number of the main chain" are both carbon atoms that are bonded to an atomic group other than Rf ¹ among the carbon atoms in Rf ¹ . It means the number of carbon atoms in the longest carbon atom chain in Rf ¹ at the end.

-Polyfluoroalkyl group In Rf ¹ , the "polyfluoroalkyl group whose terminal group is CF ₃ " is such that three or more of the hydrogen atoms of the alkyl group are substituted with fluorine atoms and the alkyl group is the same. It means a partially fluoro-substituted or perfluoro-substituted alkyl group in which at least one of the terminal methyl groups (-CH ₃ ) is substituted with a trifluoroalkyl group (-CF ₃ ). Here, the above-mentioned alkyl group is a branched or non-branched alkyl group, and the methyl group at the end of the alkyl group may be the methyl group at the end of the main chain, or the side chain (to the carbon atom of the main chain). It may be a methyl group at the end of a carbon chain other than the main chain to be bonded.

・ Rf ¹ (non-branched)
Among the above Rf ¹ , non-branched ones include 1,1,1-trifluoroethane-2-yl group (main chain carbon number: 2) and 1,1,1-trifluoropropane-3-yl group. (Main chain carbon number: 3) and a group in which one or more hydrogen atoms of these groups are substituted with a fluorine atom can be mentioned.

・ Rf ¹ (branch)
Among the above Rf ¹ , the branched ones are 1-trifluoromethylethane-1-yl group (main chain carbon number: 2), 1,1-dimethyl-2,2,2-trifluoroethane-. 1-yl group (main chain carbon number: 2), 2-trifluoromethylpropane-1-yl group (main chain carbon number: 3), 1-trifluoromethylpropane-1-yl group (main chain carbon number: 3) 3), 1-Methyl-3,3,3-trifluoropropane-1-yl group (main chain carbon number: 3), 2,2-dimethyl-3,3,3-trifluoropropane-1-yl group (Main chain carbon number: 3), 1,1-dimethyl-3,3,3-trifluoropropane-1-yl group (main chain carbon number: 3), 1-methyl-1-trifluoromethylpropane-1 -Il groups (main chain carbon number: 3) and groups in which one or more hydrogen atoms of these groups are substituted with a fluorine atom can be mentioned.

Specific Examples of Compound (a) Specific examples of the above compound (a) are shown in the following table, but the compound (a) is not limited thereto.

-Compound (a1)
The compound (a) is preferably a compound represented by the following formula (a1) [compound (a1)].
CH ₂ = CR ^a1 -COO-CH ₂ -CF ₃ (a1)
In equation (a1),
R ^a1 : A hydrogen atom or a methyl group.

-Structure unit (b)
The structural unit (b) contained in the copolymer is a structural unit derived from the compound [compound (b)] represented by the following formula (b).
CH ₂ = C (CH ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)

・ A / (a + b)
Mass percentage of the total mass a of the structural unit (a) with respect to the total mass a + b of the structural unit (a) and the structural unit (b) in the copolymer [P _{{a / (a + b)}} ≡ {a / (A + b)} × 100% by mass] is not particularly limited as long as it is in the range of 20 to 70% by mass, but is preferably 20 to 65% by mass, more preferably 20 to 60% by mass, and further. It is preferably 20 to 55% by mass, and more preferably 30 to 55% by mass.
When the copolymer contains the structural unit (b) in addition to the structural unit (a) and the structural unit (c), the present invention states that P _{{a / (a + b)}} is within this range. The oil-sliding property of the surface treatment composition is improved.

-Structure unit (a) + constituent unit (b)
The mass percentage of the total mass a + b of the structural unit (a) and the structural unit (b) in the copolymer with respect to the total mass w _COPOLYMER of the copolymer [P _{(a + b) / w} ≡ {(a + b) / w _COPOLYMER } × 100% by mass] is not particularly limited, but is preferably 20% by mass or more (less than 100% by mass), more preferably 30% by mass or more (less than 100% by mass), and further preferably 40. It is mass% or more (less than 100% by mass), more preferably 50% by mass or more (less than 100% by mass), and even more preferably 80% by mass or more (less than 100% by mass).

In the present invention, the mass ratio of each structural unit in the above-mentioned copolymer [mass percentage of the total mass of a specific structural unit to the total mass of other structural units in the copolymer] is the raw material used for the polymerization. Are all values that are considered to constitute a structural unit. Therefore, for example, the mass ratio of the structural unit (a) is the mass ratio of the total mass of the structural unit (a) in the copolymer to the total mass of the other structural units, and the mass ratio is substantially the compound used for the polymerization. It is obtained as a mass percentage of the total mass of (a) with respect to the total mass of other polymerization raw material compounds. The mass ratio of other constituent units in the above copolymer can be obtained in the same manner.

-Constituent unit (c)
The copolymer may contain a structural unit [constituent unit (c)] derived from the compound [compound (c)] represented by the following formula (c).
CH ₂ = CR ^c1 - ^Q1 -Y (c)
In formula (c),
R ^c1 : A hydrogen atom or a methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 3000.

In the above-mentioned copolymer, the above-mentioned structural unit (c) may be a structural unit derived from one kind of compound (c) or may be a structural unit derived from two or more kinds of compounds (c). ..

・ R ^c1
In the above formula (c), the above R ^c1 is not particularly limited as long as it is a hydrogen atom or a methyl group, but is preferably a methyl group. When the above R ^c1 is a methyl group, the oil-sliding property of the oil-sliding surface treatment composition of the present invention becomes better.

・ Q ¹
In the above formula (c), the above ^Q1 is not particularly limited as long as it is a single bond or a divalent linking group.
The divalent linking group includes an alkylene group having 1 to 10 carbon atoms, an alkenylene group having 2 to 10 carbon atoms, an oxyalkylene group having 1 to 10 carbon atoms, a 6-membered arylene group, and 4 to 6 members. Divalent alicyclic group of ring, 5- or 6-membered heteroarylene group, -X ^1- , -X ¹ -X ^2- , -Z ¹ -X ^{1-, -X 1 -Z 1} -X ² -,- Examples thereof include Z ¹ -X ¹ -X ^2- , -Z ¹ -X ¹ -Z ² -X ^2- , and a divalent group consisting of a combination of two or more of these. Here, in a divalent group formed by combining a plurality of ring groups, two monocycles may be condensed.

-X ^1- , -X ¹ -X ^{2-, -Z 1-X 1-, -X 1-Z 1 -X 2- , -Z 1 -X 1 -X 2- and} -Z ¹ -X ^{1 In} -Z2 ^-X2-
X ¹ and X ² : independently, an alkylene group having 1 to 10 carbon atoms, an oxyalkylene group having 1 to 10 carbon atoms, a 6-membered arylene group, a 4- to 6-membered divalent alicyclic group, 5 or Two or more monocycles consisting of a combination of two or more of a 6-membered heteroarylene group, a 6-membered arylene group, and a 4- to 6-membered divalent alicyclic group and a 5- or 6-membered heteroarylene group. Represents a divalent group selected from the group consisting of divalent groups that may be condensed.
Z ¹ and Z ² : -O-, -S-, -CO-, -COO-, -OCO-, -COS-, -SCO-, -N (R ¹ )-, -SO _2- , respectively. , -PO (OR ¹ )-, -N (R ¹ ) -COO-, -COO-N (R ¹ )-, -N (R ¹ ) -CO-, -CO-N (R ¹ )-,- From N (R ¹ ) -SO _2- , -SO ₂ -N (R ¹ )-, -N (R ¹ ) -PO (OR ² )-, and -PO (OR ² ) -N (R ¹ )- Represents a divalent group selected from the group, and in the above formula, R ¹ and R ² each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

The above Q ¹ is preferably a single bond, an alkylene group having 1 to 6 carbon atoms, -COO-, -N (R ¹ )-, -SO _2- , or a divalent linking group obtained by combining these. Yes, more preferably -Z ¹ -X ^1- . Here, R ¹ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, Z ¹ represents -COO-, and X ¹ represents an alkylene group having 1 to 6 carbon atoms.

-Substituent of ^Q1 The divalent linking group may have a substituent.
Examples of the substituent include halogen atoms such as fluorine atom (F), chlorine atom (Cl), bromine atom (Br) and iodine atom (I); hydroxy group; cyano group; methoxy group, ethoxy group and butoxy. An alkoxy group such as a group and an octyloxy group; an aryloxy group such as a phenoxy group; an alkylthio group such as a methylthio group and an ethylthio group; an acyl group such as an acetyl group, a propionyl group and a benzoyl group; a methanesulfonyl group and a benzenesulfonyl group, etc. A sulfonyl group; an acyloxy group such as an acetoxy group and a benzoyloxy group; a sulfonyloxy group such as a methanesulfonyloxy group and a toluenesulfonyloxy group; a phosphonyl group such as a diethylphosphonyl group; an amide group such as an acetylamino group and a benzoylamino group; Carbamoyl groups such as N, N-dimethylcarbamoyl group and N-phenylcarbamoyl group; alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group, cyclopropyl group and butyl group; aryl groups such as phenyl group and trill group. Heterocyclic groups such as pyridyl group, imidazolyl group and furanyl group; alkenyl group such as vinyl group and 1-propenyl group; alkoxyacyloxy group such as methoxyacetyloxy group; alkoxycarbonyl group such as methoxycarbonyl group and ethoxycarbonyl group; In addition, a vinyl group, a (meth) acryloyl group, a methacryloyl group, a silyl group, a polymerizable group such as a cinnamic acid residue and the like can be mentioned.

・ Y
In the above formula (c), Y is not particularly limited as long as it is an organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000.
Examples of the organopolysiloxane group include a group in which a silicon atom of a repeating unit represented by- (SiO) x-is substituted with a hydrogen atom, an alkyl group, a phenyl group, or the like, and a group in which- (Si) is particularly preferable. It is a polydimethylsiloxane group represented by (CH ₃ ) ₂ O)-.
Further, the terminal of the organopolysiloxane group is preferably not a polymerizable group, more preferably an alkyl group, an alkoxy group or a polyether group, and further preferably an alkyl group. Here, the above-mentioned alkyl group, alkoxy group and polyether group may have a substituent.

-Method for measuring number average molecular weight In the present invention, the number average molecular weight (Mn) of an organopolysiloxane group can be measured by gel permeation chromatography (GPC).
Examples of specific GPC measurement conditions include the following.
(1) Dilute with Asahiclean AK-225 (manufactured by Asahi Glass Co., Ltd.) so that the concentration of the polymer becomes about 1%, and use this as a measurement sample.
(2) Measurement is performed under the following measurement conditions using a Shodex GPC-104 manufactured by Showa Denko KK.
(GPC measurement conditions)
Separation column: GPC LF-604 × 2 (filler: styrene-divinylbenzene copolymer, manufactured by Showa Denko KK)
Default column: KF600RH x 2 (filler: none, manufactured by Showa Denko KK)
Clean Liquid: Asahi Clean AK-225 (manufactured by Asahi Glass Co., Ltd.)
Flow velocity: 0.2 ml / min
Standard substance: Polymethylmethacrylate

-Compound (c1)
The compound (c) is preferably a compound represented by the following formula (c1) [Compound (c1)].
CH ₂ = CR ^c1 -COO- (CH ₂ ) _n- (Si (CH ₃ ) ₂ O) _m -Si (CH ₃ ) ₂ -R ^c2 (c1)
In equation (c1),
R ^c1 : A hydrogen atom or a methyl group,
n: An integer of 1 to 6
m: An integer from 10 to 800,
R ^c2 : An alkyl group which may have a substituent and may have a substituent.
The number average molecular weight (Mn) of the polydimethylsiloxane group represented by "-(Si (CH ₃ ) ₂ O) _m -Si (CH ₃ ) ₂ -R ^c2 " is 1000 to 30,000.

・ R ^c1
In the above formula (c1), the above R ^c1 is not particularly limited as long as it is a hydrogen atom or a methyl group, but is preferably a methyl group.

・ M
The above m is not particularly limited as long as it is an integer of 10 to 800, but is the average number of polydimethylsiloxane groups represented by "-(Si (CH ₃ ) ₂ O) _m -Si (CH ₃ ) ₂ -R ^c2 ". The molecular weight is preferably 5,000 to 15,000, and more preferably 10,000 to 15,000.

・ N
The above n is not particularly limited as long as it is an integer of 1 to 6, but is preferably 2 to 4.

・ R ^c2
The above R ^c2 is an alkyl group which may have a substituent, preferably an alkyl group in which a substituent may be substituted with a hydrogen atom of an alkyl group having 1 to 5 carbon atoms, and more preferably a non-alkyl group. It is a substituted alkyl group having 1 to 5 carbon atoms.

Examples of the substituent include halogen atoms such as fluorine atom, chlorine atom, bromine atom and iodine atom; hydroxy group; cyano group; alkoxy group such as methoxy group and ethoxy group; aryloxy group such as phenoxy group; methylthio group. And alkylthio groups such as ethylthio groups; acyl groups such as acetyl and benzoyl groups; carboxy groups; sulfonyl groups such as methanesulfonyl and benzenesulfonyl groups; acyloxy groups such as acetoxy and benzoyloxy groups; methanesulfonyloxy and toluene A sulfonyloxy group such as a sulfonyloxy group; a phosphonyl group such as a diethylphosphonyl group; an amino group; an amide group; an alkyl group such as a methyl group, an ethyl group, a propyl group and an isopropyl group; an aryl group such as a phenyl group and a trill group; Examples thereof include heterocyclic groups such as a pyridyl group, an imidazolyl group and a furanyl group; and an alkoxyacyloxy group such as a methoxyacetyloxy group. However, the above-mentioned substituent does not include a polymerizable functional group such as a vinyl group, a (meth) acryloyl group, an epoxy group and an isocyanate group.

Content of structural unit (c) The total mass e of the structural unit (c) in the copolymer is the mass percentage of the total mass of the copolymer w _COPOLYMER [P _{c / w} ≡ (c / w _COPOLYMER). ) × 100% by mass] is not particularly limited, but is preferably 5 to 40% by mass, and more preferably 10 to 20% by mass.
When the above P _{c / w} is within this range, the slipperiness of the oil-sliding surface treatment composition of the present invention becomes better.

-Contents of the structural unit (a) + the structural unit (c) When the copolymer contains the structural unit (c), the total of the structural unit (a) and the structural unit (c) in the copolymer. The mass percentage of the mass a + c with respect to the total mass w _COPOLYMER of the above copolymer [P _{(a + c) / w} ≡ {(a + c) / w _COPOLYMER } × 100 mass%] is not particularly limited, but is preferably 40 mass% or more. (Less than 100% by mass), more preferably 60% by mass or more (less than 100% by mass).
When the above P _{(a + c) / w} is within this range, the oil-sliding property of the oil-sliding surface treatment composition of the present invention becomes better.

・ A / (a + c)
When the copolymer contains the structural unit (c), the total mass a of the structural unit (a) is relative to the total mass a + c of the structural unit (a) and the structural unit (c) in the copolymer. The mass percentage [Pa _{/ (a + c)} ≡ {a / (a + c)} × 100 mass%] is not particularly limited, but is preferably 40% by mass or more (less than 100% by mass), and more preferably 50 to 90. It is by mass, more preferably 60 to 80% by mass.

-Structural unit (a) + structural unit (b) + structural unit (c)
When the copolymer contains the structural unit (c), the common weight of the total mass a + b + c of the structural unit (a), the structural unit (b) and the structural unit (c) in the copolymer. The mass percentage [P _{(a + b + c) / w} ≡ {(a + b + c) / w _COPOLYMER } × 100 mass%] with respect to the total mass w _COPOLYMER of the coalescence is not particularly limited, but is preferably 40 mass% or more (100 mass% or less). Yes, more preferably 50% by mass or more (100% by mass or less), further preferably 60% by mass or more (100% by mass or less), and even more preferably 70% by mass or more (100% by mass or less). It is even more preferably 80% by mass or more (100% by mass or less), and particularly preferably 90% by mass or more (100% by mass or less).
When the copolymer contains the structural unit (c) and P _{(a + b + c) / w} is within this range, the oil-sliding property of the oil-sliding surface treatment composition of the present invention becomes better.

・ A / (a + b)
When the copolymer contains the structural unit (c), the total mass a of the structural unit (a) is the total mass of the structural unit (a) and the structural unit (b) in the copolymer. The mass percentage [P _{{a / (a + b)}} ≡ {a / (a + b)} × 100 mass%] with respect to a + b is preferably 25 to 70% by mass, more preferably 30 to 70% by mass, and further. It is preferably 35 to 65% by mass, and more preferably 45 to 65% by mass.

-Structure unit (a) + constituent unit (b)
When the copolymer contains the structural unit (c), the total mass a + b of the structural unit (a) and the structural unit (b) in the copolymer is relative to the total mass w _COPOLYMER of the copolymer. The mass percentage [P _{(a + b) / w} ≡ {(a + b) / w _COPOLYMER } × 100 mass%] is not particularly limited, but is preferably 30 mass% or more (less than 100 mass%), and more preferably 40 mass. % Or more (less than 100% by mass), more preferably 50% by mass or more (less than 100% by mass), still more preferably 50 to 95% by mass, and even more preferably 80 to 90% by mass.

<< Structural unit (d) >>
The copolymer may contain a structural unit [constituent unit (d)] derived from the compound [compound (d)] represented by the following formula (d).
(CH ₂ = CR ^d1 -COO-) _n Q ² (d)
In equation (d),
R ^d1 : A hydrogen atom or a methyl group,
n: An integer of 2 or more,
^Q2 : It is a linking group of n-value.

In the above-mentioned copolymer, the above-mentioned structural unit (d) may be a structural unit derived from one kind of compound (d) or may be a structural unit derived from two or more kinds of compounds (d). ..

・ R ^d1
In the above formula (d), the above R ^d1 is not particularly limited as long as it is a hydrogen atom or a methyl group, but is preferably a methyl group. When the above R ^d1 is a methyl group, the oil-sliding property of the oil-sliding surface treatment composition of the present invention is better.

・ Q ²
The above Q ² is not particularly limited as long as it is an n-valent linking group (where n is an integer of 2 or more), but is particularly preferably a divalent linking group from the viewpoint of controlling the polymerization reaction.

When the above Q ² is a divalent linking group, examples of the divalent linking group include the same as the above Q ¹ .

Specific Examples of Compound (d) Specific examples of the above compound (d) are shown in the following table, but the compound (d) is not limited thereto.

Ａｋ^１：炭素数１～２０の分岐または非分岐のアルキレン基である。 The symbols in Table 2 have the following meanings.
i, j, k: Represents an integer from 1 to 20 independently of each other.
o, p, q: Represents an integer of 0 to 3 independently of each other.
r, s: r is 2 or 3, and s is 0 or 1. However, r + s = 3.
R ^d1 : A hydrogen atom or a methyl group. When there are multiple R ^d1s in the same molecule, each R ^d1 is an independent hydrogen atom or methyl group.
R ^d2 : Any one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, -CH ₂ OH and -CH ₂ -OCO-CR ^d4 = CH ₂ . Here, R ^d4 is a hydrogen atom or a methyl group.
R ^d3 : Any one selected from the divalent groups represented by the following formulas (1) to (3). However, in the formula, "*" indicates the bond point with the nitrogen atom.

Ak ¹ : A branched or non-branched alkylene group having 1 to 20 carbon atoms.

-Compound (d1)
The compound (d) is preferably a compound represented by the following formula (d1) [compound (d1)].
CH ₂ = CR ^d1 -COO- (C ₂ H ₄ O) _n -CO-CR ^d1 = CH ₂ (d1)
In equation (d1),
R ^d1 : A hydrogen atom or a methyl group,
n: It is an integer of 2 to 20.

The above n is preferably 1 to 4, and more preferably 1.

Content of the constituent unit (d) When the copolymer contains the constituent unit (d), the mass d of the constituent unit (d) is the mass percentage of the total mass of the copolymer w _COPOLYMER [P _{d / w.} ≡ (d / w _COPOLYMER ) × 100% by mass] is not particularly limited, but is preferably (more than 0% by mass) 10% by mass or less, and more preferably (more than 0% by mass) 5% by mass or less.
When the copolymer contains the structural unit (d) and the P _{d / w} is within this range, the durability of the oil-sliding surface-treated composition of the present invention becomes better.

<< Structural unit (e) >>
The copolymer may contain a structural unit [constituent unit (e)] derived from the compound [compound (e)] represented by the following formula (e).
CH ₂ = CR ^e1 -Q ³ -W (e)
In formula (e),
R ^e1 : A hydrogen atom or a methyl group,
Q ³ : Single bond or divalent linking group,
W: Hydroxy group, carboxy group or C1-C3 alkoxysilyl group.

In the above-mentioned copolymer, the above-mentioned structural unit (e) may be a structural unit derived from one kind of compound (e) or may be a structural unit derived from two or more kinds of compounds (e). ..

・ R ^e1
In the above formula (e), the above R ^e1 is not particularly limited as long as it is a hydrogen atom or a methyl group, but is preferably a methyl group.

・ Q ³
In the above formula (e), the above ^Q3 is not particularly limited as long as it is a single bond or a divalent linking group.
Examples of the divalent linking group include the same group as ^Q1 .

The above ^Q3 is preferably a single bond, an alkylene group having 1 to 6 carbon atoms, -COO-, -N ( ^R1 )-, _-SO2- , or a divalent linking group obtained by combining these. Yes, more preferably -Z ¹ -X ^1- . Here, R ¹ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, Z ¹ represents -COO-, and X ¹ represents an alkylene group having 1 to 6 carbon atoms.

・ W
In the above formula (e), W is not particularly limited as long as it is a hydroxy group (-OH), a carboxy group (-COOH) or a C1 to C3 alkoxysilyl group, but is preferably a carboxy group or "-Si (OAk ³ ) ₃ ". It is a C1 to C3 alkoxysilyl group represented by "(Ak ³ in the formula represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms). Here, the carboxy group may be in the form of a salt.
When the above W is a carboxy group or a C1 to C3 alkoxysilyl group (-Si (OAk ³ ) ₃ ; Ak ³ in the formula represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms), the lubricity of the present invention is achieved. The adhesion of the surface treatment composition becomes better.

-Compound (e1)
When W in the above formula (e) is a C1 to C3 alkoxysilyl group, the above compound (e) is preferably a compound represented by the following formula (e1) [compound (e1)].
CH ₂ = CR ^e1 -COO-Q ³¹ -Si (OAk ³¹ ) ₃ (e1)
In equation (e1),
R ^e1 : A hydrogen atom or a methyl group,
Q ³¹ : Substituted or unsubstituted alkylene group
Ak ³¹ : An alkyl group having 1 to 3 carbon atoms.

Specific Examples of Compound (e1) Specific examples of the above compound (e1) are shown in the following table, but the compound (e1) is not limited thereto.

-Compound (e2)
When W in the above formula (e) is a hydroxy group (—OH), the above compound (e) is preferably a compound represented by the following formula (e2) [compound (e2)].
CH ₂ = CR ^e1 -COO-Q ³² -OH (e2)
In equation (e2),
R ^e1 : A hydrogen atom or a methyl group,
Q ³² : -X ^31- or -X ³² -X ^31- .
Here, in Q ²² above, X ³¹ represents an alkylene group, a phenylene group or a cyclohexylene group having 1 to 10 carbon atoms which may be substituted with a hydroxy group, and X ³² is − (C ₂ H ₄ O). It represents _p -or-(C ₃ H ₆ O) _q- , and p and q are independently integers of 1 to 30.

Specific Examples of Compound (e2) Specific examples of the above compound (e2) are shown in the following table, but the compound (e2) is not limited thereto.

In Table 4, n is an integer of 1 to 10.

-Compound (e3)
When W in the above formula (e) is a carboxy group (—COOH), the above compound (e) is preferably a compound represented by the following formula (e3) [compound (e3)].
CH ₂ = CR ^e1 -Q ³³ -COOH (e3)
In equation (e3),
R ^e1 : A hydrogen atom or a methyl group,
Q ³³ : Single bond, alkylene group having 1 to 10 carbon atoms, phenylene group, cyclohexylene group,-(C ₂ H ₄ O) _r -,-(C ₃ H ₆ O) _s- , -Z ³¹ -X ³³ -or-Z ³² -X ³⁴ -Z ³³ -X ^35- .
Here, in Q ³³ , r and s are independently integers of 1 to 30, Z ³¹ represents −COO—, and X ³³ is an alkylene group having 1 to 10 carbon atoms, a phenylene group, and a cyclohexylene. Group,-(C ₂ H ₄ O) _t -or-(C ₃ H ₆ O) _u- , t and u are independently integers from 1 to 30, and Z ³² represents -COO-. X ³⁴ represents-(C ₂ H ₄ O) _v -or-(C ₃ H ₆ O) _W- , v and w are independently integers of 1 to 30, and Z ³³ represents -CO-. , ^X35 represent an alkylene group having 1 to 10 carbon atoms, a phenylene group or a cyclohexylene group.

Specific Examples of Compound (e3) Specific examples of the above compound (e3) are shown in the table below, but the compound (e3) is not limited thereto.

In Table 5, m and n are independently integers from 1 to 10.

Content of the structural unit (e) When the copolymer contains the structural unit (e), the total mass e of the structural unit (e) in the copolymer, the total mass w of the copolymer. The mass percentage with respect to _COPOLYMER [P _{e / w} ≡ (e / w _COPOLYMER ) × 100 mass%] is not particularly limited, but is preferably (more than 0 mass%) 10 mass% or less, and more preferably (0 mass%). Super) 5% by mass or less.
When the copolymer contains the structural unit (e) and the _{Pe / w} is within this range, the adhesiveness of the oil-like surface treatment composition of the present invention becomes better.

<< Structural unit (f) >>
The copolymer is a structural unit derived from a compound [compound (f)] other than the compound (a) to the compound (e), which can be copolymerized with the compound (a) to the compound (e). Unit (f)] may be included.

In the above-mentioned copolymer, the above-mentioned structural unit (f) may be a structural unit derived from one kind of compound (f) or may be a structural unit derived from two or more kinds of compounds (f). ..

-Compound (f1)
As an example of the compound (f), a styrene-based compound represented by the following formula (f1) [compound (f1)] can be mentioned.

In the above formula (f1),
R ³ : -H, -CH ₃ , -Cl, -CHO, -CH ₂ Cl, -CH ₂ NH ₂ , -CH ₂ N (CH ₃ ) ₂ , -CH ₂ N ⁺ (CH ₃ ) ₃ ^Cl- , -CH ₂ N ⁺ H ₃ ^Cl- , -CH ₂ CN, -CH ₂ COOH, -CH ₂ N (CH ₂ COOH) ₂ , -CH ₂ SH, -CH ₂ SO ₃ Na or CH ₂ OCOCH ₃ .

-Compound (f2)
As another example of the above-mentioned compound (f), the above-mentioned compound (a), the above-mentioned compound (b), the above-mentioned compound (c), the above-mentioned compound (d), and the above-mentioned compound (e) represented by the following formula (f2). Acrylic compounds other than [compound (f2)] can be mentioned.
CH ₂ = CR ^f -CO-Q ⁴ -R ⁴ (f2)
In equation (f2),
R ^f : A hydrogen atom, a halogen atom or a methyl group,
^Q4 : -O- or -NH-,
R ⁴ : A hydrogen atom or a monovalent organic group.
However, among the compounds represented by the above formula (f2), it corresponds to any one of the above compound (a), the above compound (b), the above compound (c), the above compound (d) and the above compound (e). Excludes things.

上記式（１）～式（４）中、「＊」は上記式ｆ（２１）中の「－ＣＯＯ－」の酸素原子との結合点を示す。 -Compound (f21)
When the R ^f is a hydrogen atom or a methyl group and the Q ⁴ is —O—, the compound (f2) is preferably a (meth) acrylate compound represented by the following formula (f21) [Compound (meth). f21)].
CH ₂ = CR ^f1 -COO-R ⁴¹ (f21)
In equation (f21),
R ^f1 : -H or -CH ₃ and
R ⁴¹ : -C _i H _{2i + 1} , -CH ₂ CH ₂ N (CH ₃ ) ₂ , -CH ₂ -C (CH ₃ ) ₂ -O-CO-Ph, -CH ₂ -Ph, -CH ₂ CH _2- O-Ph, -CH ₂ -N ⁺ (CH ₃ ) ₃ Cl ^- ,-(CH ₂ CH ₂ O) _j -CH ₃ ,-(CH ₂ CH ₂ O) _k -H, -CH ₂ CH ₂ -NCO , Or a monovalent organic group represented by any of the following formulas (1) to (4). Here, i is an integer of 1 to 20, j is an integer of 2 to 20, k is an integer of 1 to 20, and -C _{iH 2i + 1} is a branched or non-branched alkyl group having the number of carbons _i . , And -Ph represents a phenyl group.

In the above formulas (1) to (4), "*" indicates the bond point of "-COO-" in the above formula f (21) with the oxygen atom.

The R ⁴¹ is preferably a methyl group.

-Compound (f22)
When the R ^f is a hydrogen atom or a methyl group and the Q ⁴ is −NH-, the compound (f2) is preferably a (meth) acrylamide compound represented by the following formula (f22) [Compound (meth). f22)].
CH ₂ = CR ^f2 -CONH-R ⁴² (f22)
In equation (f22),
R ^f2 : -H or -CH ₃ and
R ⁴² : -H or -C _h H _{2h + 1} . Here, h is an integer of 1 to 20.

-Compound (f3)
As still another example of the compound (f), the compound (a), the compound (b), the compound (c), the compound (d), and the compound (e) represented by the following formula (f3). ), Vinyl-based compounds other than the above compound (f1) and the above compound (f2) [compound (f3)] can be mentioned.
CH ₂ = CH-R ⁵ (f3)
In equation (f3),
R ⁵ : Hydrogen atom, chlorine atom, bromine atom, iodine atom, cyano group, alkoxy group, aryloxy group or acyloxy group.

The above ^R5 is preferably a chlorine atom or a cyano group.

The compound (f3) represents vinyl chloride when the R ⁵ is a chlorine atom, and represents acrylonitrile when the R ⁵ is a cyano group.

Content of structural unit (f) When the copolymer contains the structural unit (f), the mass percentage of the mass f of the structural unit (f) with respect to the total mass w _COPOLYMER of the copolymer [P _{f / w.} ≡ (f / w _COPOLYMER ) × 100% by mass] is not particularly limited, but is preferably (more than 0% by mass) 40% by mass, and more preferably (more than 0% by mass) 20% by mass.

<< Carbon number of perfluoroalkyl group >>
The US Environmental Protection Agency (USEPA) published a preliminary risk study report on the safety of perfluorooctanoic acid (PFOA) detected in various environments, including wild animal and human blood, in March 2003. It has been pointed out that perfluoroalkyl groups with 8 carbon atoms, which may generate PFOA, have an impact on living organisms and the environment. In January 2006, PFOA and its related substances, and precursors thereof. Since advocating for fluororesin manufacturers to participate in the reduction of emissions into the environment and the content reduction in products, it is hoped that the perfluoroalkyl group contained in the compound will have a short carbon number of 6 or less. It is rare.

Therefore, in consideration of the influence on the living body and the environment, it is desirable that the copolymer contained in the lubricating oil-like surface treatment composition of the present invention does not contain a linear perfluoroalkyl group having 8 or more carbon atoms. , Perfluoroalkyl groups, those with 6 or less carbon atoms should be used.

<< Molecular weight of copolymer >>
The molecular weight of the above-mentioned copolymer is not particularly limited, but the weight average molecular weight (Mw) is preferably 1 × 10 ³ to 1 × 10 ⁷ , and more preferably 1 × 10 ⁴ to 1 × 10 ⁶ .
When the weight average molecular weight of the copolymer is in this range, the solubility of the copolymer in a solvent is good, and the lubricating performance of the oil-like surface treatment composition of the present invention is sufficiently exhibited. Can be done.

<< Polymerization form of copolymer >>
The above-mentioned copolymer contains a structural unit (a) and a structural unit (c) as essential structural units, and further, as structural units that can be arbitrarily included, a structural unit (b), a structural unit (d), and a structural unit ( It may contain one or more types of structural units selected from the group consisting of e) and the structural unit (f).
The polymerization form of the above-mentioned copolymer is not particularly limited, and may be a random copolymer, a block copolymer, a graft copolymer, or a combination of two or more of these, but a random copolymer is preferable. It is a coalescence.

<< Manufacturing method of copolymer >>
The method for producing the above-mentioned copolymer is not particularly limited, and various known methods can be adopted. For example, it can be produced by addition polymerization based on unsaturated groups in each compound. The polymerization can be carried out by appropriately adopting the addition polymerization conditions of the known unsaturated compound. For example, as the polymerization initiator, a commonly used polymerization initiator such as an organic peroxide, an azo compound or a persulfate can be used. Further, in order to adjust the molecular weight of the copolymer, a molecular weight adjusting agent can be used during the polymerization reaction.

<< Concentration of copolymer >>
The concentration of the above-mentioned copolymer in the oil-like surface treatment composition of the present invention is not particularly limited, but is preferably 0.1 to 20% by mass, and more preferably 1 to 10% by mass.
When the concentration of the above-mentioned copolymer in the oil-like surface treatment composition of the present invention is within this range, the oil-like performance of the oil-like surface treatment composition of the present invention becomes more excellent.
The concentration of the above-mentioned copolymer in the oil-like surface treatment composition of the present invention may be any final concentration. For example, when the oil-like surface treatment composition of the present invention is directly prepared as a polymerization composition, immediately after polymerization. It does not matter if the polymer concentration (solid content concentration) of the polymerization composition exceeds 20% by mass. The high-concentration polymerization composition can be appropriately diluted so as to have a final concentration within the above range.

<solvent>
The solvent contained in the oil-like surface treatment composition of the present invention is not particularly limited as long as it can dissolve or disperse the above-mentioned copolymer.
Examples of such a solvent include various organic solvents, water, a mixed medium thereof, and the like.
For example, as the solvent, a polar solvent other than alcohol or a fluorine-based solvent can be used.

Examples of the polar solvent other than the alcohol include a ketone type (acetone, methyl ethyl ketone, etc.), an ester type (ethyl acetate, etc.), and an ether type (tetrahydrofuran, etc.). Examples of the fluorine-based solvent include hydrofluorocarbons (HFCs) and hydrofluoroethers (HFEs). As the solvent used in the oil-like surface treatment composition of the present invention, a fluorine-based solvent is particularly preferable.

-Specific Examples of Solvents Specific examples of a fluorine-based solvent that can be used as a solvent for the oil-like surface treatment composition of the present invention are shown below, but the present invention is not limited thereto.

m-xylene hexafluoride (hereinafter sometimes referred to as "m-XHF")
p-xylene hexafluoride (hereinafter sometimes referred to as "p-XHF")
CF ₃ CH ₂ CF ₂ CH ₃
CF ₃ CH ₂ CF ₂ H
C ₆ F ₁₃ OCH ₃
C ₆ F ₁₃ OC ₂ H ₅
C ₃ F ₇ OCH ₃
C ₃ F ₇ OC ₂ H ₅
C ₆ F ₁₃ H
C ₆ F ₁₃ CH ₂ CH ₃
CF ₂ HCF ₂ CH ₂ OCF ₂ CF ₂ H
CF ₃ CFHCHFCF ₂ CH ₃
CF ₃ (OCF ₂ CF ₂ ) _n (OCF ₂ ) _m OCF ₂ H
C ₈ F ₁₇ OCH ₃
C ₇ F ₁₅ OCH ₃
C ₄ F ₉ OCH ₃
C ₄ F ₉ OC ₂ H ₅
C ₄ F ₉ CH ₂ CH ₃
CF ₃ CH ₂ OCF ₂ CF ₂ CF ₂ H
(In the above example, m and n each represent an integer of 1 to 20.)

-From the viewpoint of flammability / flash point safety, it is preferable that the polymer of the present invention is dissolved in a non-flammable solvent and does not have flammability as a lubricant-like surface treatment agent.
In the present invention, "flammability" is defined as having a flash point by measuring the flash point according to the following procedure. Each flash point measurement method shall follow the method specified in JIS-K-2265.

-Flash point measurement procedure (a) Implementation of flash point measurement by the tag sealing method.
(B) In (a), when the flash point cannot be measured at a temperature of 80 ° C. or lower, the flash point is measured by the Cleveland opening method.

<Other ingredients that may be included>
The oil-sliding surface treatment composition of the present invention is a component other than the above-mentioned copolymer and the above-mentioned solvent as long as it does not impair the object of the present invention and does not adversely affect the stability, the oil-sliding performance, the appearance and the like as the composition. May include.

Examples of the components other than the above-mentioned copolymer and the above-mentioned solvent include a pH adjuster for preventing corrosion of the coating surface, a rust preventive agent, and a polymer in a liquid when the composition is diluted and used. Examples thereof include dyes, dye stabilizers, flame retardants, antifoaming agents and antistatic agents for controlling the concentration of the polymer or distinguishing it from untreated parts.

<Manufacturing method of oil-like surface treatment composition>
The oil-like surface treatment composition of the present invention is in a liquid form containing the above-mentioned copolymer as a coating component and containing the copolymer in a solvent.
The method for producing the oil-sliding surface treatment composition of the present invention is not particularly limited.
As one aspect of the method for producing the oil-sliding surface treatment composition of the present invention, for example, a method for producing the copolymer by dissolving it in a solvent described later can be mentioned.
Further, as another aspect of the method for producing the oil-sliding surface treatment composition of the present invention, for example, compound (a) and compound (c) are added to a solvent, and the above-mentioned co-polymerization is carried out by solution polymerization using this solvent as a polymerization medium. Examples thereof include a production method in which a polymer is synthesized to produce a solution or a dispersion containing the copolymer, and the solution is used as the lubricating oil-like surface treatment composition of the present invention. Further, for example, there is also a production method in which the above-mentioned copolymer is synthesized by emulsion polymerization to produce a solution or dispersion containing the above-mentioned copolymer, and this is used as the oil-sliding surface treatment composition of the present invention. The copolymer thus obtained may be separated and dissolved in another solvent. Further, when the compound of the polymerization raw material is in the form of gas, it may be continuously supplied under pressure using a pressure vessel.

[Member having a film formed by drying an oil-like surface treatment composition]
For a member having a coating film obtained by drying the oil-sliding surface treatment composition of the present invention, the surface treatment composition of the present invention is applied to the surface of the member and dried to remove the solvent, and the above-mentioned co-existence is applied to the surface of the member. It is produced by forming a film of a polymer. A member having a film formed by drying the oil-sliding surface treatment composition of the present invention produced in this manner is imparted with excellent oil-sliding performance on its surface.

The material of the member to be treated is not particularly limited, and examples thereof include stone, wood, glass, plastic, metal, and ceramic. Examples of the plastic member include polyvinyl chloride, polyester, polystyrene, ABS resin, polypropylene, polyacetal, nylon, fluororesin, polycarbonate, acrylic resin, polyethylene terephthalate, polybutylene terephthalate and the like. Examples of metal members include general steel plates (SPCC, SS400, etc.), stainless alloys (SUS304, SUS316L), copper plates, aluminum, titanium, and the like. From the viewpoint of adhesion of the coating film, it is more preferable to use a metal material.

When the oil-like surface treatment composition of the present invention is applied, it can be diluted to an arbitrary concentration and used.

Further, the method for applying the lubricating oil-like surface treatment composition of the present invention is not particularly limited, and a general application method can be used. Examples of such a coating method include dip coating, spray coating, and coating with a roller or the like.

In order to remove the solvent by applying the surface treatment composition of the present invention to the surface of the member and then drying it, it is preferable to perform drying at a temperature equal to or higher than the boiling point of the solvent.
The drying temperature is not particularly limited, but when heat drying is difficult due to the material of the member to be treated or the like, heating can be avoided and drying can be performed. The heat treatment conditions may be appropriately selected according to the composition of the oil-like surface treatment composition to be applied, the coating area, and the like.

[Equipment using a member having a film formed by drying an oil-like surface treatment composition]
As equipment using a member having a coating film obtained by drying the oil-sliding surface treatment composition of the present invention, for example, a range using a member having a coating film obtained by drying the oil-sliding surface treatment composition of the present invention. Examples include cooking equipment such as hoods, machine tools such as cutting machines, sewage treatment equipment, air conditioning equipment, and various transportation / transportation equipment.

The present invention will be specifically described below, but the present invention is not limited to the following examples. Unless otherwise specified, what is simply indicated by "%" in the description of the following examples shall represent "mass%".

[Preparation of surface treatment composition]
<Synthesis of (co) polymer>
<< Synthetic raw materials >>
Table 6 shows the compounds used to synthesize the (co) polymers of Examples and Comparative Examples. All of these compounds are compounds available as reagents on the market or compounds that can be easily synthesized by known synthetic methods.

《Synthesis method》
(Co) The raw material compound is charged in a closed container at a charging ratio (part by mass) at which the composition ratio (polymerization composition) of the constituent units of the polymer is the ratio shown in Tables 7 to 10, and the reaction is carried out at 70 ° C. for 18 hours or more. , The (co) polymers used in the Examples and Comparative Examples were synthesized. The compound concentration at the time of synthesizing the (co) polymer was 20% by mass, and the initiator concentration was 0.2% by mass.
The synthesized (co) polymers correspond to Examples 1 to 20 and Comparative Examples 1 to 15, and may be referred to as copolymers 1 to 20 and comparative (co) polymers 1 to 15, respectively.

<Preparation of oil-sliding surface treatment composition and comparative surface treatment composition>
The active ingredient concentration of the synthesized (co) polymer is 5% by mass, Asahiclean AE-3000 (manufactured by AGC Asahi Glass Co., Ltd.) is 15% by mass, and m-xylene hexafluoride (hereinafter referred to as "m-XHF"). ) Was mixed so as to be 80% by mass, and a lubricating oil-like surface treatment composition used in Examples and a comparative surface treatment composition used in Comparative Examples were prepared.
The prepared lubricating oily surface treatment composition and comparative surface treatment composition correspond to Examples 1 to 20 and Comparative Examples 1 to 15, respectively, and the oily smooth surface treatment compositions 1 to 20 and the comparative surface treatment composition, respectively. It may be referred to as 1 to 15.

In Table 6, a, b, c, d, e and f represent compound (a), compound (b), compound (c), compound (d), compound (e) and compound (f), respectively. , Similarly, a. 1, b. 1 and c. 1 and the like represent compound (a.1), compound (b.1), compound (c.1) and the like. The same applies to Tables 7 to 10 below.

Further, in Table 6, for compound (c.1), m is an integer of 10 to 800, R ^c2 represents a hydrogen atom or a methyl group, and a polydimethylsiloxane group “-(Si (CH ₃ ) ₂ O). The number average molecular weight (Mn) of " _m -Si (CH ₃ ) ₂ -R ^c2 " is about 12000, and for compound (f.9), n is an integer of 1 to 20, and the average value of n is 4. It is .5.

[Performance evaluation of surface treatment composition]
<Overview>
The performance of the prepared surface treatment composition was determined by the contact angle with water, n-hexadecane (HD) or salad oil (edible rapeseed oil, manufactured by Nisshin Oillio Co., Ltd.) and the falling angle with respect to salad oil (edible rapeseed oil, manufactured by Nisshin Oillio Co., Ltd.). Was measured and evaluated. The larger the contact angle with water, the higher the water repellency, and the larger the contact angle with HD or salad oil, the higher the oil repellency. In addition, the smaller the falling angle of the salad oil, the higher the lubricating oil performance.

<Measurement method of contact angle and fall angle>
<< Production of glass plate with film >>
For each of the Examples and Comparative Examples, the glass plate was dipped in the prepared surface treatment composition, taken out after 1 minute, dried at 120 ° C. for 5 minutes, and coated with the slippery surface treatment composition or the comparative surface treatment composition. (A glass plate with a coating film) was produced.

<< Measurement of contact angle with water or HD >>
For each of the prepared coated glass plates, 10 μL of water was dropped on the surface, and the contact angle was measured using an automatic contact angle meter OCA-20 (manufactured by Data Physics).
Similarly, the contact angle with respect to HD was also measured.

《Measurement of contact angle with salad oil and falling angle of salad oil》
For each of the prepared glass plates with a coating, 10 μL of commercially available salad oil (edible rapeseed oil, manufactured by Nisshin Oillio Co., Ltd.) was dropped on the surface, and the contact angle [ Degree] was measured.
Next, for the coated glass plate after measuring the contact angle, the falling angle [degree] was measured using an automatic contact angle meter OCA-20 (manufactured by Data Physics Co., Ltd.). The moving speed of the falling angle when measuring the falling angle was set to about 1.6 degrees / sec. The angle at which the droplet started to move was defined as the fall angle [degree].

<Measurement results of contact angle and fall angle>
Tables 7 to 10 show the measurement results of the contact angle and the falling angle of Examples 1 to 20 using the oil-sliding surface treatment compositions 1 to 20 and Comparative Examples 1 to 15 using the comparative surface treatment compositions 1 to 15. It is shown in the column of "contact angle [degree]" and the column of "fall angle [degree]".

In addition, in Tables 7 to 10, "100 × a / (a + b)" is the sum of the structural units (a) and the structural units (b) of the total mass of the structural units (a) in the (co) polymer. Represents mass percentage [mass%] to mass, and "100 x (a + b) / total" is the mass percentage of the total mass of the structural unit (a) and the structural unit (b) to the total mass of the (co) polymer [ Mass%], and "100 x (a + b + c) / total" is the mass percentage of the total mass of the structural unit (a), the structural unit (b), and the structural unit (c) with respect to the total mass of the (co) polymer. Represents [mass%].

Regarding the fall angle of the salad oil in Tables 7 and 8, "ND ¹ " means that the droplets flowed in a streak pattern without sliding down, and the droplets remained on the glass plate, or during the sliding down. It means that the droplet was torn off and remained on the glass plate, and in "ND ² ", the droplet did not move even if the inclination angle was changed to 90 degrees, and the fall angle could not be measured. It means that.

In the following explanation, the lubricating oil performance was evaluated as follows.
(1) Salad oil has a falling angle of 19 degrees or less ... Excellent sliding oil performance (2) Salad oil has a falling angle of 15 degrees or less ... Better oil sliding performance (3) Salad oil has a falling angle of 11 degrees or less ... Even better lubricating oil performance (4) The falling angle of salad oil is 9 degrees or less ... Even better lubricating oil performance

Example 1 in which the mass percentage [mass%] of the total mass of the structural unit (a) in the copolymer with respect to the total mass of the structural unit (a) and the structural unit (b) is in the range of 20 to 70% by mass. Nos. 20 had a falling angle of the salad oil of 19 degrees or less (5 to 19 degrees), and showed excellent lubricating oil performance.

Further, the copolymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the structural unit (a) and the constitution of the total mass of the structural unit (a) in the copolymer. In Examples 6 to 20 in which the mass percentage [mass%] with respect to the total mass of the unit (b) is in the range of 25 to 70% by mass, the falling angle of the salad oil is 15 degrees or less (5 degrees to 15 degrees). It showed better lubricating oil performance.

The polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the mass percentage of the total mass of the structural unit (a) and the structural unit (b) with respect to the total mass of the copolymer. In Examples 6 to 19 in which [mass%] was 30% by mass or more, the falling angle of the salad oil was 11 degrees or less (5 degrees to 11 degrees), and further excellent lubricating oil performance was exhibited.

The polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the mass percentage of the total mass of the structural unit (a) and the structural unit (b) with respect to the total mass of the copolymer. In Examples 6 to 18 in which [mass%] was 40% by mass or more, the falling angle of the salad oil was 11 degrees or less (5 degrees to 11 degrees), and further excellent lubricating oil performance was exhibited.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a) and the structural unit (b) is relative to the total mass of the copolymer. The mass percentage [mass%] is 40% by mass or more, and the total mass of the structural unit (a) in the copolymer is the mass percentage [mass] with respect to the total mass of the structural unit (a) and the structural unit (b). %] Was in the range of 30 to 70% by mass, and Examples 7 to 18 had a falling angle of the salad oil of 11 degrees or less (5 degrees to 10 degrees), and showed further excellent lubricating oil performance.

The polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the mass percentage of the total mass of the structural unit (a) and the structural unit (b) with respect to the total mass of the copolymer. In Examples 6 to 17 in which [mass%] was 50% by mass or more, the falling angle of the salad oil was 11 degrees or less (5 degrees to 11 degrees), and further excellent lubricating oil performance was exhibited.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a) and the structural unit (b) is relative to the total mass of the copolymer. The mass percentage [mass%] is 40% by mass or more, and the total mass of the structural unit (a) in the copolymer is the mass percentage [mass] with respect to the total mass of the structural unit (a) and the structural unit (b). %] Was in the range of 30 to 70% by mass, and Examples 7 to 17 had a falling angle of the salad oil of 9 degrees or less (5 degrees to 9 degrees), and showed even better lubricating oil performance.

The polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and is a copolymer having the total mass of the structural unit (a), the structural unit (b) and the structural unit (c). In Examples 6 to 20 in which the mass percentage [mass%] with respect to the total mass of the oil is 40% by mass or more, the falling angle of the salad oil is 15 degrees or less (5 degrees to 15 degrees), and the oil sliding performance is more excellent. rice field.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a), the structural unit (b) and the structural unit (c) is the same. In Examples 6 to 19 in which the mass percentage [mass%] with respect to the total mass of the polymer is 50% by mass or more, the falling angle of the salad oil is 11 degrees or less (5 to 11 degrees), and the lubricating oil performance is further excellent. showed that.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a), the structural unit (b) and the structural unit (c) is the same. The mass percentage [mass%] with respect to the total mass of the polymer is 60% by mass or more, and the total mass of the structural units (a) in the copolymer is the total of the structural units (a) and the structural units (b). In Examples 7 to 18 in which the mass percentage [mass%] with respect to the mass is in the range of 30 to 70% by mass, the falling angle of the salad oil is 11 degrees or less (5 degrees to 10 degrees), and the lubricating oil performance is further excellent. showed that.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a), the structural unit (b) and the structural unit (c) is the same. The mass percentage [mass%] with respect to the total mass of the polymer is 70% by mass or more, and the total mass of the structural units (a) in the copolymer is the total of the structural units (a) and the structural units (b). In Examples 7 to 17 in which the mass percentage [mass%] with respect to the mass is in the range of 30 to 70% by mass, the falling angle of the salad oil is 9 degrees or less (5 degrees to 9 degrees), and the lubricating oil performance is further excellent. showed that.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a), the structural unit (b) and the structural unit (c) is the same. The mass percentage [mass%] with respect to the total mass of the polymer is 80% by mass or more, and the total mass of the structural units (a) in the copolymer is the total of the structural units (a) and the structural units (b). In Examples 7 to 16 in which the mass percentage [mass%] with respect to the mass is in the range of 30 to 70% by mass, the falling angle of the salad oil is 9 degrees or less (5 degrees to 9 degrees), and the lubricating oil performance is further excellent. showed that.

Further, the polymer contains the structural unit (c) in addition to the structural unit (a) and the structural unit (b), and the total mass of the structural unit (a), the structural unit (b) and the structural unit (c) is the same. The mass percentage [mass%] with respect to the total mass of the polymer is 90% by mass or more, and the total mass of the structural units (a) in the copolymer is the total of the structural units (a) and the structural units (b). In Examples 7 and 9 to 14 in which the mass percentage [mass%] with respect to the mass is in the range of 35 to 65% by mass, the falling angle of the salad oil is 9 degrees or less (5 to 8 degrees), and the smoothness is further improved. Shown oil performance.

The larger the contact angle with water, HD or salad oil, the smaller the fall angle of the salad oil, and no correlation was observed between the contact angle and the fall angle.

Conventionally, oil repellency and oil slipperiness have been considered without distinction, and a surface treatment having high oil repellency has been required to improve antifouling performance. However, according to the present invention, there is no correlation between oil repellency and oil-sliding property, and just because the contact angle is high does not mean that the oil-sliding property has oil-sliding property. In the present invention, it has been found that a surface treatment agent having high lubricating oil performance can be obtained by using a specific fluorine-containing polymer.

Claims (13)

A lubricant-like surface treatment composition containing a copolymer containing only a structural unit derived from a compound represented by the following formula (a) and a structural unit derived from a compound represented by the following formula (b), and a solvent. There,
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). An oil-like surface treatment composition having a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound.
CH ₂ = CR ^a1 -COO-Rf ¹ (a)
CH ₂ = C (CH ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : A polyfluoroalkyl group having 2 to 3 carbon atoms in the main chain and a CF ₃ terminal group. It contains only the structural unit derived from the compound represented by the following formula (a), the structural unit derived from the compound represented by the following formula (b), and the structural unit derived from the compound represented by the following formula (c). An oil-like surface treatment composition containing a copolymer and a solvent.
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). An oil-like surface treatment composition having a mass percentage of 50% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound.
CH ₂ = CR ^a1 -COO-Rf ¹ (A)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : The main chain has 2 to 3 carbon atoms and the terminal group is CF. ₃ Is a polyfluoroalkyl group.
CH ₂ = C (CH) ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
CH ₂ = CR ^c1 -Q ¹ -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000. A structural unit derived from the compound represented by the following formula (a), a structural unit derived from the compound represented by the following formula (b), a structural unit derived from the compound represented by the following formula (c), and the following formula. An oil-like surface-treated composition containing a copolymer containing a structural unit derived from the compound represented by (e) and a solvent.
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). An oil-like surface treatment composition having a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound. However, the copolymer does not contain a structural unit derived from the compound represented by the following formula (d).
CH ₂ = CR ^a1 -COO-Rf ¹ (A)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : The main chain has 2 to 3 carbon atoms and the terminal group is CF. ₃ Is a polyfluoroalkyl group.
CH ₂ = C (CH) ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
CH ₂ = CR ^c1 -Q ¹ -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000.
CH ₂ = CR ^e1 -Q ³ -W (e)
In formula (e),
R ^e1 : Hydrogen atom or methyl group,
Q ³ : Single bond or divalent linking group,
W: Hydroxyl group, carboxy group or C1-C3 alkoxysilyl group.
(CH ₂ = CR ^d1 -COO-) _n Q ² (D)
In equation (d),
R ^d1 : Hydrogen atom or methyl group,
n: an integer of 2 or more,
Q ² : N-valent linking group. A structural unit derived from the compound represented by the following formula (a), a structural unit derived from the compound represented by the following formula (b), and a structural unit derived from the compound represented by the following formula (c). , A copolymer containing a structural unit derived from the compound represented by the following formula (d) and a structural unit derived from the compound represented by the following formula (e1) or (e2), and a solvent. An oil-based surface treatment composition
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). An oil-like surface treatment composition having a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound.
CH ₂ = CR ^a1 -COO-Rf ¹ (A)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : The main chain has 2 to 3 carbon atoms and the terminal group is CF. ₃ Is a polyfluoroalkyl group.
CH ₂ = C (CH) ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
CH ₂ = CR ^c1 -Q ¹ -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000.
(CH ₂ = CR ^d1 -COO-) _n Q ² (D)
In equation (d),
R ^d1 : Hydrogen atom or methyl group,
n: an integer of 2 or more,
Q ² : N-valent linking group.
CH ₂ = CR ^e1 -COO-Q ³¹ -Si (OAk ³¹ ) ₃ (E1)
In equation (e1),
R ^e1 : Hydrogen atom or methyl group,
Q ³¹ : Substituted or unsubstituted alkylene group,
Ak ³¹ : An alkyl group having 1 to 3 carbon atoms.
CH ₂ = CR ^e1 -COO-Q ³² -OH (e2)
In equation (e2),
R ^e1 : Hydrogen atom or methyl group,
Q ³² : -X ³¹ -Or-X ³² -X ³¹ -.
Here, the above Q ³² In X ³¹ Represents an alkylene group, a phenylene group or a cyclohexylene group having 1 to 10 carbon atoms which may be substituted with a hydroxy group, and X ³² Is-(C ₂ H ₄ O) _p -Or- (C ₃ H ₆ O) _q -Represents-, and p and q are independently integers of 1 to 30. A copolymer containing a structural unit derived from the compound represented by the following formula (a), a structural unit derived from the compound represented by the following formula (b), and a structural unit derived from the compound (f), and a solvent. A lubricating oily surface treatment composition comprising:
The compound (f) contains at least one of the compounds represented by the following formulas (f1) to (f3).
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). An oil-like surface treatment composition having a mass percentage of 20% by mass to 70% by mass with respect to the total mass a + b of the constituent units derived from the compound.
CH ₂ = CR ^a1 -COO-Rf ¹ (A)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : The main chain has 2 to 3 carbon atoms and the terminal group is CF. ₃ Is a polyfluoroalkyl group.
CH ₂ = C (CH) ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)

In equation (f1),
R ³ : -H, -CH ₃ , -Cl, -CHO, -CH ₂ Cl, -CH ₂ NH ₂ , -CH ₂ N (CH ₃ ) ₂ , -CH ₂ N ^＋ (CH ₃ ) ₃ Cl ^- , -CH ₂ N ^＋ H ₃ Cl ^- , -CH ₂ CN, -CH ₂ COOH, -CH ₂ N (CH ₂ COOH) ₂ , -CH ₂ SH, -CH ₂ SO ₃ Na or CH ₂ OCOCH ₃ Is.
CH ₂ = CR ^f -CO-Q ⁴ -R ⁴ (F2)
In equation (f2),
R ^f : Hydrogen atom, halogen atom or methyl group,
Q ⁴ : -O- or -NH-,
R ⁴ : A hydrogen atom or a monovalent organic group.
However, the compound represented by the formula (a) and the compound represented by the formula (b) are excluded from the compounds represented by the formula (f2).
CH ₂ = CH-R ⁵ (F3)
In equation (f3),
R ⁵ : Hydrogen atom, chlorine atom, bromine atom, iodine atom, cyano group, alkoxy group, aryloxy group or acyloxy group. The oil-sliding surface treatment composition according to claim 5 , wherein the copolymer further contains a structural unit derived from a compound represented by the following formula (c).
CH ₂ = CR ^c1 - ^Q1 -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000. A copolymer including a structural unit derived from a compound represented by the following formula (a), a structural unit derived from a compound represented by the following formula (b), and a structural unit derived from a compound represented by the following formula (c). An oil-like surface treatment composition containing a polymer and a solvent.
In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). The mass percentage of the total mass a + b of the constituent units derived from the compound is 20% by mass to 70% by mass.
In the copolymer, the mass percentage of the mass a of the structural unit derived from the compound represented by the formula (a) is 56% by mass or more.
An oil-like surface-treated composition having a mass percentage of mass b of a structural unit derived from the compound represented by the formula (b) of 40% by mass or more in the copolymer.
CH ₂ = CR ^a1 -COO-Rf ¹ (A)
In formula (a),
R ^a1 : Hydrogen atom or methyl group,
Rf ¹ : The main chain has 2 to 3 carbon atoms and the terminal group is CF. ₃ Is a polyfluoroalkyl group.
CH ₂ = C (CH) ₃ ) -COO-CH ₂ CH ₂ (CF ₂ ) ₆ F (b)
CH ₂ = CR ^c1 -Q ¹ -Y (c)
In formula (c),
R ^c1 : Hydrogen atom or methyl group,
Q ¹ : Single bond or divalent linking group,
Y: An organopolysiloxane group having a number average molecular weight (Mn) of 1000 to 30,000. In the copolymer, the mass a of the structural unit derived from the compound represented by the formula (a) is represented by the structural unit derived from the compound represented by the formula (a) and the formula (b). The slippery surface-treated composition according to any one of claims 3 to 7, wherein the mass percentage with respect to the total mass a + b of the constituent units derived from the compound is 25% by mass to 70% by mass. In the copolymer, a structural unit derived from the compound represented by the formula (a), a structural unit derived from the compound represented by the formula (b), and a compound represented by the formula (c). The slippery surface-treated composition according to claim 2, 3, 4, 6, 7 or 8 , wherein the total mass of the constituent units is 40% by mass or more of the total mass of the copolymer. In the copolymer, the total mass of the structural unit derived from the compound represented by the formula (a) and the structural unit derived from the compound represented by the formula (b) is the total mass of the copolymer. The slippery surface-treated composition according to any one of claims 2 to 9 , which is 50% by mass or more. The slippery surface-treated composition according to any one of claims 1 to 10 , wherein the compound represented by the formula (a) is a compound represented by the following formula (a1).
CH ₂ = C (R ^a1 ) -COO-CH ₂ -CF ₃ (a1)
In equation (a1),
R ^a1 : Hydrogen atom or methyl group. A member having a coating film formed by drying the lubricating oily surface-treated composition according to any one of claims 1 to 11 on at least a part of the surface. Equipment in which the member according to claim 12 is used.