WO2009156608A2 - Article présentant des propriétés antisalissures et destiné à être utilisé dans des applications aquatiques en particulier marines - Google Patents
Article présentant des propriétés antisalissures et destiné à être utilisé dans des applications aquatiques en particulier marines Download PDFInfo
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- WO2009156608A2 WO2009156608A2 PCT/FR2009/000620 FR2009000620W WO2009156608A2 WO 2009156608 A2 WO2009156608 A2 WO 2009156608A2 FR 2009000620 W FR2009000620 W FR 2009000620W WO 2009156608 A2 WO2009156608 A2 WO 2009156608A2
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- 0 C[*+](C)CCCNC(NC1CCCCC1)=NC1CCC(*)CC1 Chemical compound C[*+](C)CCCNC(NC1CCCCC1)=NC1CCC(*)CC1 0.000 description 5
- RXBBUMMIESMWBP-UHFFFAOYSA-O CCN=CC[NH2+]C(C)C Chemical compound CCN=CC[NH2+]C(C)C RXBBUMMIESMWBP-UHFFFAOYSA-O 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
- B01J31/0235—Nitrogen containing compounds
- B01J31/0245—Nitrogen containing compounds being derivatives of carboxylic or carbonic acids
- B01J31/0251—Guanidides (R2N-C(=NR)-NR2)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
- B01J31/0274—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 containing silicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/0272—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255
- B01J31/0275—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing elements other than those covered by B01J31/0201 - B01J31/0255 also containing elements or functional groups covered by B01J31/0201 - B01J31/0269
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1675—Polyorganosiloxane-containing compositions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1693—Antifouling paints; Underwater paints as part of a multilayer system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Definitions
- the present invention relates to an article having antifouling properties and for use in aquatic applications particularly marine and a method for retarding the growth of aquatic organisms on submersible or semi-submersible structures.
- the invention relates to the field of marine anti-fouling paints ("antifouling").
- Marine anti-fouling paints are finish coatings intended to prevent the attachment of animals or plants to the hulls of ships. They are used for safety reasons, to maintain the maneuverability of the ships, to reduce the consumption of fuel, to fight against corrosion and to increase the weight of the structures.
- biofouling or "soiling” occurs during immersion in seawater where a layer of organic and inorganic molecules is adsorbed on the surface of the material extremely rapidly.
- This layer of adsorbed material or “biofilm” serves as a mediator for the adhesion of bacteria present in suspension in the marine environment.
- the encrustation of various marine organisms increases the friction between hulls of ships and seawater, which decreases the speed and can lead to greater fuel consumption.
- the bottom of a ship that is not protected by an anti-fouling system may, after less than six months at sea, be covered with 150 kg of soil per square meter.
- anti-fouling paints which are intended to prevent or to significantly reduce fouling by incrustations of marine organisms.
- anti-fouling paints which are intended to prevent or to significantly reduce fouling by incrustations of marine organisms.
- the principle of anti-fouling paints relies on the controlled release of the active substance at the interface between the surface and the seawater. The effectiveness of the paint is maintained as long as the concentration of active substance released on the surface is effective and regular. .
- Most anti-fouling paints therefore contain a biocidal product that is most often an organometallic compound (tin, copper or zinc) or an organic compound (fungicide, algaecide, bactericide) that prevents the adhesion of marine fouling. by their toxic activity.
- TBT tributyltin methacrylate
- Tributyltin (TBT) very effective was therefore the most used biocide in antifouling paints, but this product, its degradation molecules and its metabolites have proved to be seriously and permanently polluting. For these reasons, the International Maritime Organization has banned the use of tin-based anti-fouling paints.
- the anti-fouling paints used today are mainly based on copper-based compounds and / or synthetic chemical compounds but also based on silicone-type polymers.
- cuprous oxide For copper-based paints, although less toxic than tin salts, they are almost always formulated with a massive proportion of cuprous oxide (see, for example, EP-A-051930 or FR-A-2557585). , the main binder being based on special polymers generally of the acrylic type. However, they are only effective against marine fauna and to fight against the growth of algae, it is essential to add herbicides that can pose new threats to the environment.
- Another solution for preventing the fouling of the surfaces of structures in contact with seawater consists in covering these surfaces with at least one protective coating, the outer layer of the coating in contact with the water being a silicone elastomer.
- These coatings are prepared from so-called "fouling-release coating” paints.
- the principle of these new anti-fouling paints is to create a very smooth, low surface energy surface on which organisms have great difficulty adhering. When such surfaces are stationary, marine organisms may settle there.
- these organisms are simply eliminated by the force of the water movement or the friction effect caused by the movement of the ship. It also means that if there is enough movement of water around the hull of a ship, a natural self-cleaning effect occurs.
- top-coat is made of hot-cured silicone elastomer or Cold.
- a three component anti-fouling system comprising at least one epoxy primer layer, a bonding layer or adhesion primer ( "Tie-coat”) and an anti-fouling layer ("top-coat”) based on silicone elastomer.
- the final layer of epoxy primer is normally a thin layer which is applied to obtain a clean and fresh surface to which the fixing layer can adhere.
- the attachment layer comprises an organopolysiloxane and a curing component.
- the antifouling layer comprises an organopolysiloxane, an alkyl silicate, a curing agent and a tin catalyst.
- the epoxy primer layer or layers are applied directly to the substrate.
- the attachment layer is applied to the epoxy primer layer (s).
- the silicone coating antifouling layer is then applied and crosslinked to the fixing layer, after partial hardening of the latter.
- top-coat based on silicone elastomer may further comprise compounds which exude and improve the "anti-fouling" effect, in particular: methylphenylpolysiloxane oils (US Pat. No. 4,025,693),
- hydrocarbon liquid compound for example a polyolefin
- liquid paraffins and waxy masses of the petrolatum type JP-A-83/013 673
- a thermoplastic polymer such as PVC
- the silicone formulations used generally involve a silicone oil, generally a hydroxyl-terminated reactive polydimethylsiloxane, optionally pre-functionalized with a silane so as to have alkoxy ends, a crosslinking agent and a polycondensation catalyst. typically a tin salt or alkyl titanate, a reinforcing filler and any other additives such as fillers, adhesion promoters, dyes, etc.
- organopolysiloxane compositions vulcanizable at room temperature are well known and are classified into 2 distinct groups: single-component compositions (RTV-1) and two-component compositions (RTV-2).
- RTV is the acronym for "Room Temperature Vulcanising”.
- water (either brought by atmospheric humidity in the case of RTV-1, or introduced into a part of the composition in the case of RTV-2) allows the polycondensation reaction, which leads to the formation of the elastomeric network.
- single-component compositions crosslink when exposed to moisture in the air, i.e. they can not crosslink in a confined environment.
- the monocomponent silicone compositions cold crosslink following a mechanism for hydrolysis of reactive functions of the acetoxysilane, cetimoxysilane, alkoxysilane ... type, followed by condensation reactions between silanol groups formed and other residual reactive functions. Hydrolysis is usually carried out by means of the water vapor diffusing into the material from the surface exposed to the atmosphere. Generally, the kinetics of the polycondensation reactions is extremely slow; these reactions are catalyzed by a suitable catalyst.
- the catalysts used are most often catalysts based on tin, titanium, an amine or compositions of these catalysts.
- Catalysts tin base (see in particular FR-A-2,557,582) and titanium (see in particular FR-A-2,786,497) are catalysts having a good efficiency.
- Single-component silicone elastomers with -Si (OR) ends are sometimes referred to as alkoxy elastomers.
- the two-component compositions When the two-component compositions, they are marketed and stored in the form of two components, a first component containing the base polymeric materials and the second component containing the catalyst. The two components are mixed during use and the crosslinked mixture in the form of a relatively hard elastomer.
- These two-component compositions are well known and are described in particular in the work of Walter NoII "Chemistry and Technology of Silicones" 1968, 2nd edition on pages 395 to 398.
- compositions essentially comprise 4 different ingredients:
- a crosslinking agent generally a silane, a silicate or a polysilicate
- the condensation catalyst is based on an organic tin compound.
- tin catalysts have already been proposed as a crosslinking catalyst for these RTV-1 or RTV-2.
- Typical polycondensation catalysts include dialkyltin compounds, especially dialkyltin dicarboxylates such as dibutyltin dilaurate and diacetate, alkyl titanate compounds such as tetrabutyl or tetraisopropyltitanate, titanium chelates (EP-AO 885). 933, US-5,519,494, US-A-4,515,932, US-A-4,563,498, US-A-4,528,353).
- catalysts of the guanidine-structured silicone polycondensation reaction such as tetramethylguanidine described in International Patent Application WO 2004/020525 have been developed.
- Other catalysts with silylated guanidine structure have also been developed and are described for example in US Pat. No. 4,248,993.
- the crosslinking of the elastomer composition is then insufficient and does not provide good mechanical properties.
- the derivative 1, 1, 3,3-tetramethylguanidine when used with a conventional crosslinking agent, such as for example an alkylpolysilicate, and without the presence of a specific reactive silane with a methylvinyloxy function, the crosslinking the system is then insufficient and can not generate a silicone elastomer.
- Tack Free Time a dry surface
- a curable silicone composition Another important characteristic of a curable silicone composition is the pot-life, that is to say the time during which the composition can be used after mixing without harden. This time must be long enough to allow its use but short enough to obtain a hard coating. For example, for a "tie coat” or “top coat” coating, a working time greater than one hour is generally required when the outside temperature is between 20 and 30 ° C. Out of the way, one of the means of adjusting this time of work is the nature of the components used as the catalyst.
- the invention aims to provide an article having antifouling properties by means of coatings obtained from antifouling paints containing no prohibited components (biocide or catalyst) and not containing tin.
- the present invention thus relates to an article having antifouling properties and intended to be used in aquatic applications, in particular marine applications, which comprises: a) a support, b) optionally at least one primary layer on said support comprising at least one anticorrosive product, c) optionally at least one intermediate primer promoting adhesion between the layers, d) at least one adhesion-promoting layer or "tie-coat” deposited on said primary layer or on said support when the primary layer is absent, and e) at least one anti-fouling layer or "top-coat” deposited on said adhesion-promoting layer or "tie-coat", said article being characterized in that the anti-fouling layer and / or the adhesion-promoting layer is are prepared from a curable polyorganosiloxane composition R containing no metal catalyst and
- R 1 and R 2 which may be identical or different, represent, independently of one another, a linear or branched monovalent alkyl group, a cycloalkyl group or a (cycloalkyl) alkyl group, the ring being substituted or unsubstituted and which may comprise at least one heteroatom, arylalkyl, fluoroalkyl, substituted or unsubstituted aryl, R 11 R 12 R 3 Si, wherein R 11, R 12, and R 13 are linear or branched monovalent alkyl groups,
- R 3 represents a hydrogen atom, a linear or branched monovalent alkyl group, a cycloalkyl group, a substituted or unsubstituted ring-substituted alkyl group which may comprise at least one heteroatom, an arylalkyl, fluoroalkyl, alkylamine or alkylguanidine group; substituted or unsubstituted aryl, an alkylalkoxysilane, R 4 represents a linear or branched alkyl chain containing 1 to 50 atoms, preferably from 1 to 20, some of which may be heteroatoms chosen from O, S and N,
- R 5 , R 6 and R 7 identical or different, represent, independently of one another, a linear or branched alkyl group, an aromatic group, an alkoxy group or a trialkylsilyloxy group of formula (I 1 ) below :
- R 1 and R " which may be identical or different, represent, independently of one another, a linear or branched C 1 -C 12 alkyl group, or an aromatic group, provided that if R 3 is a hydrogen atom, then R 1 and R 2 are neither a linear monovalent hydrocarbon group.
- the Applicant has had the merit of highlighting, quite surprisingly and unexpectedly, that the silylated organic compounds corresponding to the general formula (I) which are silyl tri or tetrasubstituted guanidines allow to prepare useful coatings such as "tie-coat” or "top-coat” in anti-fouling applications.
- the coatings obtained according to the invention have remarkable adhesion properties on the supports thus treated while conferring a very smooth treated surface with low surface energy on which the organisms have great difficulty in adhering.
- the silylated compounds according to the invention and corresponding to the general formula (I) are guanidines which are particularly easy to obtain and perform as catalysts. They have the advantage of being liquid, colorless, odorless and soluble in the silicone matrices used in anti-fouling applications.
- the silylated guanidines according to the invention are used in the silicone systems to be crosslinked at very low levels, and allow depending on the content to adapt the working time while ensuring excellent performance of the elastomers obtained.
- curable polyorganosiloxane composition R containing no metal catalyst according to the invention makes it possible to prepare paints which can be of various hues, including white, thanks to the absence of copper oxide.
- Any material that is used in an aquatic environment and is subject to soil may be a support for the present invention.
- Possible supports are boat building materials, such as stainless steel, aluminum, wood, resin-impregnated glass fibers and any other composite material.
- Materials used for pipelines such as concrete, plastics, steel and iron and other metals, can also be coated. Pools containing water, including pools, are subject to soiling. The materials used for the manufacture of basins are identical or similar to those used for the manufacture of pipelines.
- the support may or may not be coated with a primer comprising at least one anticorrosive product.
- This anticorrosive layer contains an anticorrosive product, which can be any product that inhibits corrosion or degradation of the support as a result of a reaction with its environment.
- anticorrosive products are well known in the art. They are in the form of two-component, comprising an epoxy-functional base product and a curing catalyst.
- the anticorrosive layer normally has a thickness of 0.10 to 0.75 mm.
- the intermediate primer promoting adhesion between the layers can be prepared from known and / or commercial products. Generally, they are prepared from bi-component based on epoxy-amine systems and known to those skilled in the art.
- compositions for preparing an anticorrosive layer or an adhesion-promoting intermediate primer are described in C.H.Hare's Protective Coatings, Fundamentals of Chemistry and Composition, edited by Technology Publishing Company, Pitttsburgh, 1994.
- Each of the layers of the article according to the invention can be applied by methods well known in the art. Such methods include brushing, spraying, dipping, roller coating, or any method normally used to apply a spray. painting. In addition, the drying of the different layers of the article according to the invention is done according to the usual practices in this technique.
- an antifouling layer (or "top coat) according to the invention can be associated with a layer promoting adhesion (or "tie coat”) of various and varied nature.
- this underlayer may be of various and varied nature.
- it may be made of polyurethane, natural or synthetic rubber, optionally chlorinated, such as chloroprene and neoprene, of butyral rubber / silicone (KOKAI JP-A-78 / 137,231, JP-A-78 / 137,233 and JP-A-78 / 137,234).
- KKAI JP-A-78 / 137,231, JP-A-78 / 137,233 and JP-A-78 / 137,234 According to another approach, for example described in US Pat. No.
- a "tie-coat” is described and is prepared from a moisture curable composition comprising a polycondensation catalyst based on tin, a crosslinking agent such as ethyl silicate and a co-polymer derived from the reaction product of a silylhydroxy-terminated organopolysiloxane with a polymerizable monomer such as styrene or a conjugated diolefin such as 1,3-butadiene; .
- a "tie-coat” is formed from a composition comprising
- an adhesion promoter selected from the group consisting of hydroxyl functional polysiloxanes, hydroxyalkyl functional polysiloxanes and C 1 -C 4 alkoxy polysiloxanes.
- the polycondensation catalyst A is a silylated organic compound selected from the group consisting of the following compounds (1) to (54):
- the carbodiimides are generally obtained from ureas or thioureas, themselves obtained for example by reaction of a primary amine R 1 NH 2 and an isocyanate R 2 NCO.
- Carbodiimides are products known per se, available commercially.
- the primary or secondary amine of formula (III) used in the present invention comprises at least one silylated group.
- Such amines are known per se and generally used in the silicone field as adhesion promoters.
- the method thus used consists of a simple and inexpensive synthesis from standard products.
- the carbodiimide and the silylated amine are heated in the presence or absence of a solvent.
- the reaction of the carbodiimide of formula (II) with the amine of formula (II) is carried out without a solvent.
- the reaction can be carried out at room temperature, but it is preferable to heat to a sufficient temperature depending on the substitution of the amine (H1).
- the temperature will be between 20 and 150 0 C, preferably between 70 and 130 0 C.
- the excess can be from a few percent to several equivalents, preferably from 10% to 1 equivalent.
- the solvent, if any, and optionally the excess of the other compound are evaporated, and the product formed, most often a low-viscosity liquid, is used as such as a catalyst in the reaction reactions.
- the amount of polycondensation catalysts A according to the invention is between 0.1 and 10% by weight of the total mass, preferably between 0.1 and 5%, whether it is a mono or two-component preparation.
- the curable polyorganosiloxane composition for forming the antifouling layer further comprises a catalytically effective amount of at least one polycondensation catalyst A according to the invention and as defined above and a silicone base B comprising:
- siliceous mineral filler optionally at least one siliceous mineral filler, organic and / or non-siliceous F, and
- Examples of compounds L which exude on the surface of the antifouling layer when the elastomeric network is formed thus improving the "anti-fouling" effect are for example:
- R 2 is an alkyl, aryl or alkenyl radical, the methyl and phenyl radicals are preferred (a particularly preferred example being a methylphenylpolysiloxane oil as described, for example, in US Pat. No. 4,025,693),
- X is an oxygen atom or a divalent hydrocarbon group of 1 to 8 carbon atoms
- n is a number defined so as to obtain a diorganopolysiloxane having a viscosity of between 10 and 1x10 6 mm 2 / s at 25 ° C,
- polyorganosiloxane oils may optionally be grafted and comprise acrylic, amide, amine, carbonyl, carboxylic, carboxylate, thiol, thioether, urea, quaternary ammonium, fluoroalkyl or perfluoroalkyl groups.
- Grafted or sequenced polydimethylsiloxane oils comprising at least one polyether block (with, for example, polyethylene glycol and / or polypropylene glycol groups) may also be used,
- a hydrocarbon liquid compound for example a polyolefin such as an ethylene / propylene co-polymer and in particular a low molecular weight polyisobutene (up to 5000 g / mol and preferably between 300 and 500 g / mol),
- a polyolefin such as an ethylene / propylene co-polymer and in particular a low molecular weight polyisobutene (up to 5000 g / mol and preferably between 300 and 500 g / mol)
- an organic liquid compound chosen from polydienes, polyesters, polyisocyanates, polyurethanes, polyepoxides, fluoroalkyls, fluoroethers, lubricating oils (see for example the patent (FR-A-2,375,305), plasticizers (eg fatty acid esters which may optionally be substituted by heteroatoms or phosphoric acid esters or halohydrocarbon compounds.)
- plasticizers eg fatty acid esters which may optionally be substituted by heteroatoms or phosphoric acid esters or halohydrocarbon compounds.
- Polyethylene glycols, polypropylene glycol or beaver oil may also be used and also provide anti-sagging properties when applying the composition,
- thermoplastic polymer such as PVC
- solvents K are, for example: aliphatic cycloaliphatic or aromatic hydrocarbon derivatives such as white spirit, cyclohexane, toluene, octamethyltrisiloxane, xylene and ester solvents such as methoxypropylacetate, n-butyl acetate and 2-ethoxyethylacetate and mixtures thereof.
- the amount of solvent is determined according to the application or the support to be treated so as to obtain a paint of acceptable viscosity.
- silicone bases used in the present invention crosslinking and curing by polycondensation reactions are well known. These bases are described in detail in particular in many patents and are commercially available. These silicone bases may be single-component, that is to say, packaged in a single package, and storage stable in the absence of moisture, curable in the presence of moisture, in particular moisture brought by the ambient air or water generated within the base during its use.
- two-component bases can be used, that is to say packed in two packages, which harden as soon as the polycondensation catalyst according to the invention is incorporated. They are conditioned after incorporation of the catalyst into two separate fractions, one of the fractions being able to contain, for example, only the catalyst according to the invention or a mixture with the crosslinking agent.
- the polyorganosiloxane oil C is preferably an ⁇ , ⁇ -dihydroxypolydiorganosiloxane polymer having a viscosity of between 50 and 5,000,000 mPa.s at 25 ° C. and the crosslinking agent D is preferably an organosilicon compound bearing more than two groups. hydrolyzable bonded to silicon atoms per molecule.
- the polyorganosiloxane oil C may also be functionalized at its ends by hydrolysable radicals obtained by condensation of a precursor bearing hydroxyl functional groups with a cross-linking silane bearing hydrolysable radicals.
- This polyorganosiloxane oil C capable of crosslinking by polycondensation to an elastomer may optionally be grafted with at least one polyether block (with, for example, polyethylene glycol and / or polypropylene glycol groups), polyacrylate or polymethacrylate.
- polyether block with, for example, polyethylene glycol and / or polypropylene glycol groups
- crosslinking agent D mention may be made of:
- R 1 which may be identical or different, represent hydrocarbon radicals of C 1 -C 10 including:
- C 1 -C 10 alkyl radicals such as the methyl, ethyl, propyl, butyl, pentyl, 2-ethylhexyl, octyl or decyl radicals,
- C 5 -C 8 cycloalkyl radicals such as the phenyl, tolyl and xylyl radicals
- R 2 which are identical or different, represent alkyl radicals having from 1 to 8 carbon atoms, such as the methyl, ethyl, propyl, butyl, pentyl, 2-ethylhexyl and C 3 -C 3 oxyalkylene radicals; 6 and k is 0, 1 or 2.
- the crosslinking agents D are products that are accessible on the silicone market; moreover their use in compositions hardening at room temperature is known; it appears in particular in the French patents FR-A-1,126,411, FR-A-1,179,969, FR-A-1,189,216, FR-A-1,198,749, FR-A-1,248,826, FR-A -1 314 649, FR-A-1 423 477, FR-A-1 432 799 and FR-A-2 067 636.
- alkyltrialkoxysilanes, alkyl silicates and alkyl polysilicates are more particularly preferred, in which the organic radicals are alkyl radicals having from 1 to 4 carbon atoms.
- crosslinking agents D which may be used, mention is made more particularly of the following silanes: propyltrimethoxysilane, methyltrimethoxysilane, retyltrimethoxysilane, vinyltriethoxysilane, methyltriethoxysilane, propyltriethoxysilane, tetraethoxysilane, tetrapropoxysilane, type 1 silanes. , 2-bis (trialkoxysilyl) ethane such as:
- crosslinking agent D examples include ethyl polysilicate, or n-propyl polysilicate.
- crosslinking agents D which may also be employed are the silanes of the following general formula (and the products of partial hydrolysis of this silane): in which: the symbols R 1 , which are identical or different, are as defined above.
- Y which may be identical or different, represent hydrolysable groups such as, for example, amino, amido, aminoxy, oxime, acyloxy and alkenyloxy groups.
- crosslinking agent D is used per 100 parts by weight of polyorganosiloxane C capable of crosslinking by polycondensation to an elastomer.
- composition according to the invention may comprise at least one adhesion promoter E such as, for example, organosilicon compounds bearing both:
- GLYMO 3-glycidoxypropyltrimethoxysilane
- MEMO methacryloxypropyltrimethoxysilane
- OCH (CH 2 ) CHOCH 3 H 2 (CH 2 ) NH (CH 2)
- 3 Si-CH CH 2 (OCH 3) 2
- 3-ureidopropyltrialkoxysilane type silanes such as: 3-ureidopropyltriethoxysilane or 3-ureidopropyltrimethoxysilane, or polyorganosiloxane oligomers containing such organic groups at a content greater than 20%.
- the mineral fillers F used are very finely divided products whose average particle diameter is less than 0.1 ⁇ m. These fillers include fumed silicas and precipitated silicas; their BET surface area is generally greater than 40 m 2 / g. These fillers may also be in the form of more coarsely divided products with an average particle diameter greater than 0.1 ⁇ m. Examples of such fillers include ground quartz, diatomaceous earth silicas, calcium carbonate, calcined clay, rutile titanium oxide, iron, zinc, chromium and zirconium oxides.
- magnesium various forms of alumina (hydrated or not), boron nitride, lithopone, barium metaborate, barium sulfate, glass microbeads; their specific surface area is generally less than 30 m 2 / g.
- these fillers may have been surface-modified by treatment with the various organosilicon compounds usually employed for this purpose.
- these organosilicon compounds may be organochlorosilanes, diorganocyclopolysiloxanes, hexaorganodisiloxanes, hexaorganodisilazanes or diorganocyclopolysilazanes (French patents FR-A-1 126 884, FR-A-1 136 885, FR-A-1 236 505, British patent GB -A-1,024,234).
- the treated fillers contain, in most cases, from 3 to 30% of their weight of organosilicic compounds.
- the charges may consist of a mixture of several types of charges of different particle size; for example, they may consist of 30 to 70% of finely divided silicas of BET specific surface area greater than 40 m 2 / g and 70 to 30% of more coarsely divided silicas with a specific surface area of less than 30 m 2 / g.
- the purpose of introducing the fillers is to impart good mechanical and rheological characteristics to the elastomers resulting from the hardening of the compositions in accordance with the invention.
- H pigments are as an indication: red iron oxide, zinc oxide, carbon black, graphite, yellow iron oxide, titanium oxide white, chromium, cobalt oxide, litharge, ultramarine and red and yellow molybdenum, or organic pigments known and widely used in the field of aquatic paints.
- non-reactive linear polyorganosiloxane polymers G may be introduced, preferably for the purpose of acting on the physical characteristics of the compositions in accordance with the invention and / or on the mechanical properties of the elastomers resulting from the hardening of these compositions. .
- non-reactive linear polyorganosiloxane polymers G are well known; they more particularly include: ⁇ , ⁇ -bis (triorganosiloxy) diorganopolysiloxane polymers having viscosities of at least 10 mPa.s at 25 ° C., formed essentially of diorganosiloxy units and at most 1% of monoorganosiloxy units and or siloxy, the organic radicals bonded to the silicon atoms being chosen from methyl, vinyl and phenyl radicals, at least 60% of these organic radicals being methyl radicals and 10% at most being vinyl radicals.
- the viscosity of these polymers can reach several tens of millions of mPa.s at 25 ° C; they therefore include oils with fluid to viscous appearance and hard soft gums. They are prepared according to the usual techniques described more precisely in the French patents FR-A-978 058, FR-A-1 025 150, FR-A-1 108 764, FR-A-1 370 884.
- the ⁇ , û-bis (trimethylsiloxy) dimethylpolysiloxane oils having a viscosity ranging from 10 mPa.s to 1000 mPa.s at 25 ° C.
- These polymers which act as plasticizers can be introduced in a proportion of at most 70 parts, preferably 5 to 20 parts, per 100 parts of polyorganosiloxane oil C capable of crosslinking by polycondensation.
- compositions according to the invention may further comprise at least one silicone resin H1.
- silicone resins are branched organopolysiloxane polymers well known and commercially available. They have, per molecule, at least two different units chosen from those of formula R 111 ssu 1Z2 (unit M), R " '2 SiO 2/2 (D unit), R"' SiO 3/2 (T unit) and SiO 4/2 (Q pattern).
- the radicals R "' are identical or different and are chosen from linear or branched alkyl radicals, vinyl, phenyl and 3,3,3-trifluoropropyl radicals.
- the alkyl radicals preferably contain from 1 to 6 carbon atoms, inclusive.
- alkyl radicals R of methyl, ethyl, isopropyl, tert-butyl and n-hexyl radicals, these resins preferably being hydroxylated and in this case having a hydroxyl content by weight of between 5 and 500 meq / 100 g.
- resins examples include MQ resins, MDQ resins, DT resins and MDT resins.
- compositions in accordance with the invention it is necessary, in the case of single-component compositions, to use an apparatus which makes it possible to intimately mix, with the exclusion of moisture, with and without heat input, the various constituents fundamental the adjuvants and additives mentioned above are optionally added. All these ingredients can be loaded into the apparatus in any order of introduction.
- the invention also relates to a method of applying an antifouling coating on a support intended for use in aquatic applications, characterized in that it comprises the following steps: a) optionally the application of at least one layer primary coating on said support comprising at least one anticorrosive product, b) optionally the application of at least one intermediate primer promoting the adhesion between the layers and its hardening, c) the application of a layer promoting adhesion or "tie-coat" on said primary layer or on said support when the primary layer is absent, d) the hardening of said adhesion-promoting layer, e) the application of an anti-fouling layer or "top-coat", and f) curing said antifouling layer, said method being characterized in that the antifouling layer and / or the adhesion promoting layer is / are prepared from a polyorganosiloxane d composition urcissable R according to the invention and as described above
- the thickness of the applied layers can vary and films of 12 to 1000 microns thick (under the condition of homogeneous deposition) have given good results.
- the typical thickness of the different layers is about 50 ⁇ m for the primary, 150 ⁇ m for the "tie coat” and 150 ⁇ m for the "top coat”.
- those skilled in the art will be able to adapt the thickness of the different layers according to the desired result.
- the last subject of the invention relates to the use of a curable polyorganosiloxane composition R according to the invention and as described above to form a "tie-coat” adhesion promoting coating or an "anti-fouling" top-coat coating. "a painting intended to protect an article against the adhesion of aquatic organisms.
- Mono-component bases are described in detail, for example in the patents EP 141 685, EP 147 323, EP 102 268, EP 21 859, FR 2 121 289 and FR 2 121 631, cited with reference.
- Bi-component bases are described in detail in, for example, EP 118, EP 117,772, EP 10,478, EP 50,358, EP 184,966, US 3,801,572 and US 3,888,815, cited as references.
- the colorless final mixture is devolatilized at 100 ° C. under 2 mbar for 2 hours to give 44 g of a colorless liquid of low viscosity, corresponding to a mixture of the expected guanidine and the excess silylated amine (9.8% by weight). .
- the colorless final mixture is devolatilized at 100 ° C. under 2 mbar for 2 hours to give 99.5 g of a colorless liquid of low viscosity, corresponding to the expected guanidine.
- the colorless final mixture is devolatilized at 100 ° C. under 2 mbar for 2 hours to give 39.3 g of a colorless liquid of low viscosity, corresponding to the expected guanidine, containing 2% by weight of the starting amine.
- the colorless final mixture is devolatilized at 12O 0 C under 1 mbar for 2 hours to give 67 g of a colorless liquid of low viscosity, corresponding to the expected guanidine, containing 4% p of the starting amine.
- a mixture of 30.84 g of bis (3- (trimethoxysilyl) propyl) amine (0.0903 mol) and 13.68 g of diisopropylcarbodiimide (0.1084 mol, 20% excess) is heated for 31 hours at 110.degree. 0 C (94% conversion of the amine).
- the colorless final mixture is devolatilized at 100 ° C. under 2 mbar for 2 hours to give 42 g of a colorless liquid of low viscosity, corresponding to the expected guanidine, containing 4% of the starting amine.
- a mixture of 20.01 g of N- [3- (trimethoxysilyl) propyl] ethylenediamine (0.09 mol) and 27.26 g of diisopropylcarbodiimide (0.216 mol, 20% excess) is heated for 8 hours at 90 ° C. and 72 hours. at 70 ° C. (100% conversion to diamine, 93% to monoguanidine intermediates).
- the colorless final mixture is devolatilized at 100 ° C. under 2 mbar for 2 hours to give 41.6 g of a highly viscous liquid which crystallises after a few minutes.
- a mixture of 2 g of 2,3-diisopropyl-1-methyl-1- (3- (methyldimethoxysilyl) propyl) guanidine, 10 g of hexamethyldisiloxane and 50 mg of potassium silanolate is heated to 50.degree.
- Methylphenylpolysiloxane oil marketed by Bluestar Silicones under the name Rhodorsil Huile 550 ®
- Comparative 1 2 mmol of tetramethylguanidylpropyltrimethoxysilane (pentasubstituted silylated guanidine)
- Tack free time time required to obtain a dry surface.
- the catalysts according to the invention make it possible to obtain a dry surface 30 to 36 minutes after their application.
- the formulation catalyzed by tetramethylguanidylpropyltrimethoxysilane (comparative 1, pentasubstituted silylated guanidine) requires 65 minutes (ie 100% more time) to obtain a dry surface.
- the plates After drying for 48 hours at room temperature, the plates are immersed in a marine environment (in seawater) and examined after 12 and 23 weeks of immersion.
- the antifouling evaluation is 100, which indicates the complete absence of organisms on the coated plate.
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- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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EP09769449.1A EP2297253B1 (fr) | 2008-05-29 | 2009-05-28 | Article présentant des propriétés antisalissures et destiné à être utilisé dans des applications aquatiques en particulier marines |
CN2009801245802A CN102076788B (zh) | 2008-05-29 | 2009-05-28 | 用于水应用并且尤其是海洋应用的具有防污性能的制品 |
JP2011511051A JP5254435B2 (ja) | 2008-05-29 | 2009-05-28 | 防汚特性を有し、水中用途、特に海洋用途に用いるための物品 |
ES09769449.1T ES2524456T3 (es) | 2008-05-29 | 2009-05-28 | Artículo que presenta propiedades antiincrustantes, y destinado a ser utilizado en aplicaciones acuáticas, en particular marinas |
KR1020107026595A KR101246007B1 (ko) | 2008-05-29 | 2009-05-28 | 수계, 특히 해양 용도를 위한 방오 특성을 갖는 물품 |
US12/994,428 US9744527B2 (en) | 2008-05-29 | 2009-05-28 | Article having antifouling properties for aquatic and particularly sea use |
Applications Claiming Priority (2)
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FR0802913 | 2008-05-29 | ||
FR08/02913 | 2008-05-29 |
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WO2009156608A2 true WO2009156608A2 (fr) | 2009-12-30 |
WO2009156608A3 WO2009156608A3 (fr) | 2010-04-08 |
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PCT/FR2009/000620 WO2009156608A2 (fr) | 2008-05-29 | 2009-05-28 | Article présentant des propriétés antisalissures et destiné à être utilisé dans des applications aquatiques en particulier marines |
Country Status (7)
Country | Link |
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US (1) | US9744527B2 (fr) |
EP (1) | EP2297253B1 (fr) |
JP (1) | JP5254435B2 (fr) |
KR (1) | KR101246007B1 (fr) |
CN (1) | CN102076788B (fr) |
ES (1) | ES2524456T3 (fr) |
WO (1) | WO2009156608A2 (fr) |
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WALTER NOLL: "Chemistry and Technology of Silicones", 1968, pages: 395 - 398 |
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EP2492323A1 (fr) | 2011-02-23 | 2012-08-29 | Akzo Nobel Coatings International B.V. | Composition résistante au bio-encrassement |
WO2013024106A1 (fr) | 2011-08-18 | 2013-02-21 | Akzo Nobel Coatings International B.V. | Composition anti-encrassement comprenant des stérols et/ou des dérivés de ceux-ci |
US9388316B2 (en) | 2011-08-18 | 2016-07-12 | Akzo Nobel Coatings International B.V. | Fouling-resistant composition comprising sterols and/or derivatives thereof |
CN102489441A (zh) * | 2011-12-01 | 2012-06-13 | 大连中远船务工程有限公司 | 钻井船海底阀箱涂装工艺 |
WO2014131695A1 (fr) | 2013-02-26 | 2014-09-04 | Akzo Nobel Coatings International B.V. | Compositions antisalissure avec un polymère ou oligomère contenant un oxyalkylène fluoré |
WO2015082408A2 (fr) | 2013-12-03 | 2015-06-11 | Akzo Nobel Coatings International B.V. | Procédé de revêtement d'une vieille couche de revêtement sur un substrat, et composition de revêtement pouvant être utilisée dans ce procédé |
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EP3974481A1 (fr) * | 2020-09-29 | 2022-03-30 | Jotun A/S | Composition de revêtement anti-salissures |
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CN113372530A (zh) * | 2021-05-19 | 2021-09-10 | 万华化学集团股份有限公司 | 一种聚氨酯或聚氨酯脲水分散体及其制备方法、水性服装革贝斯 |
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Also Published As
Publication number | Publication date |
---|---|
CN102076788B (zh) | 2013-06-12 |
US20110206936A1 (en) | 2011-08-25 |
JP2011524433A (ja) | 2011-09-01 |
KR101246007B1 (ko) | 2013-03-21 |
WO2009156608A3 (fr) | 2010-04-08 |
JP5254435B2 (ja) | 2013-08-07 |
KR20110009182A (ko) | 2011-01-27 |
EP2297253B1 (fr) | 2014-08-27 |
US9744527B2 (en) | 2017-08-29 |
CN102076788A (zh) | 2011-05-25 |
ES2524456T3 (es) | 2014-12-09 |
EP2297253A2 (fr) | 2011-03-23 |
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