WO2011021354A1 - コーティング剤組成物 - Google Patents
コーティング剤組成物 Download PDFInfo
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- WO2011021354A1 WO2011021354A1 PCT/JP2010/004897 JP2010004897W WO2011021354A1 WO 2011021354 A1 WO2011021354 A1 WO 2011021354A1 JP 2010004897 W JP2010004897 W JP 2010004897W WO 2011021354 A1 WO2011021354 A1 WO 2011021354A1
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of 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; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- 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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
- C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C09D123/283—Halogenated homo- or copolymers of iso-olefines
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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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/06—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D5/02—Emulsion paints including aerosols
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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
- C09D5/02—Emulsion paints including aerosols
- C09D5/022—Emulsions, e.g. oil in water
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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
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
- C09D5/028—Pigments; Filters
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/28—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
- C08L23/283—Halogenated homo- or copolymers of iso-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
Definitions
- the present invention relates to a coating composition, and in particular, by treating the surface of a substrate such as rubber or plastic, it has excellent adhesion to the substrate, is non-tacky, has good water repellency and slipperiness, and is resistant to resistance.
- the present invention relates to a coating agent composition capable of forming a film having excellent wear properties.
- EPDM ethylene-propylene-diene terpolymers
- TPO thermoplastic olefin elastomers
- a coating agent for example, a composition obtained by adding polyorganosiloxane having a hydrogen atom bonded to a silicon atom and / or organoalkoxysilane and a curing catalyst to polydiorganosiloxane having a hydroxyl group at a terminal is known.
- blended polydiorganosiloxane with curable polyurethane is also known (for example, refer patent document 1 and patent document 2).
- an emulsion type silicone coating agent an aqueous silicone composition containing various siloxane compounds in combination has been proposed (see, for example, Patent Document 3). Also, in order to improve the adhesion and wear resistance of the coating, a coating agent is proposed that combines dehydrocondensation type silicone emulsion with chlorinated polyolefins with maleic anhydride groups and elastic spherical fine particles. (For example, see Patent Document 4).
- Patent Document 4 The coating agent described in Patent Document 4 is improved in uniform coating property, non-adhesiveness, water repellency, slipperiness, adhesion to a substrate, and the like, and is rubbed with glass in a wet state. Improvements are also seen in the prevention of squealing noises and the prevention of friction scratches on the painted metal surface. However, further improvements in wear resistance and further improvements in environmental and safety aspects are demanded.
- a coating agent having high wear resistance a coating agent in which an amine functional silicone emulsion and a polyurethane emulsion and an epoxy resin or an epoxy functional silane are blended has been proposed (see, for example, Patent Document 5).
- a coating agent in which a silicone emulsion and a polyurethane emulsion are blended at a predetermined ratio has also been proposed (see, for example, Patent Document 6).
- the coating agent described in Patent Document 5 has a problem that the pot life is short, and in order to obtain a sufficient pot life, an organic solvent is substantially required to be blended.
- the coating agent described in Patent Document 6 has insufficient wear resistance and does not provide sufficient adhesion to a substrate made of EPDM or TPO.
- blending of ultra-high molecular weight polyethylene powder is effective in improving wear resistance, but the powder itself. Has a heat softening point, so that there is a problem that the characteristics greatly change depending on the heating and curing temperature and the heating time.
- An object of the present invention is to provide a coating agent that is excellent in adhesiveness, water repellency, pot life, and slipperiness, and particularly improved in adhesion (adhesion) and abrasion resistance to a substrate.
- Another object of the present invention is to provide a coating agent that can prevent frictional scratches on a metal coating surface, which has been regarded as important in recent years, and that does not generate noise due to rubbing with glass even when wet.
- the present inventors have found that spherical fine particles having rubber-like elasticity are added to an emulsion containing a specific amino group-containing polyorganosiloxane, chlorinated polyolefin and water-dispersible polyurethane resin. It has been found that an aqueous coating agent having the above characteristics can be obtained by blending, and the present invention has been completed.
- the coating agent composition of the present invention contains (A) (a) an amino group-containing polyorganosiloxane having self-crosslinking property, (b) chlorinated polyolefin, and (c) a water-dispersible polyurethane resin. It includes an aqueous emulsion and (B) spherical fine particles made of a rubber-like elastic material mixed and dispersed in the (A) aqueous emulsion.
- the coating agent composition of the present invention has excellent storage stability, uniform coating property, and pot life, and has a wide range of curing conditions that are not affected by temperature and time during heat curing, according to this coating agent composition, Excellent adhesion to plastic substrates, especially foamed or non-foamed EPDM rubber and TPO, and has a smooth surface with no irregularities or roughness, good slipperiness and non-stickiness A film having properties such as water repellency and water repellency can be formed. Further, this coating does not bleed out the compounding components from the surface, has a low coefficient of friction and excellent wear resistance. Furthermore, adverse effects such as friction scratches on the metal coating surface are improved, and no squeak is generated due to rubbing with glass even in a wet state.
- a coating agent composition according to an embodiment of the present invention includes (a) an amino group-containing polyorganosiloxane having self-crosslinkability, (b) a chlorinated polyolefin, (c) a water-dispersible polyurethane resin, and (B) a rubber. Water-based emulsions each containing spherical fine particles made of a shaped elastic body.
- each component will be described in detail.
- the amino group-containing polyorganosiloxane that is the component (a) used in the embodiment of the present invention has self-crosslinking property that can be crosslinked by itself, and an emulsion containing the component (a) alone is applied.
- a film having a gel property is formed.
- the film which has a gel property shows the film which shows non-fluidity. More specifically, when a dry cured film having a film thickness of about 10 ⁇ m is formed on an aluminum plate, the coating that does not flow down even when the plate is erected vertically is defined as a coating having gel properties.
- the (a) amino group-containing polyorganosiloxane having a self-crosslinking property and a gel-like film-forming property as the component does not bleed out from the film obtained from the coating agent composition of the embodiment, It is integrated with the component (c) and has a good non-adhesiveness and water repellency, and forms a smooth surface coating without irregularities or roughness.
- the (a) amino group-containing polyorganosiloxane is preferably blended in an emulsion state obtained by, for example, emulsion polymerization.
- the amino group-containing polyorganosiloxane as component (a) has an average composition formula: [R 1 a Si (OR 2 ) b O (4-ab) / 2 ] n (wherein R 1 is a hydrogen atom) And a monovalent group selected from a monovalent substituted or unsubstituted hydrocarbon group, wherein at least one of all R 1 in one molecule is bonded to a silicon atom via one or more carbon atoms.
- a monovalent hydrocarbon group having a substituted or unsubstituted amino group R 2 represents a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group, and a and b are 1 ⁇ a ⁇ 2.5 1 ⁇ a + b ⁇ 2.5 and 0 ⁇ b ⁇ 0.5, and n represents a number of 4 to 5,000).
- water-insoluble means a property that does not dissolve in water, specifically, it does not dissolve when 1 part by weight of the amino group-containing polyorganosiloxane is blended with 100 parts by weight of water at 25 ° C. It means that a uniform and transparent solution cannot be obtained.
- the monovalent hydrocarbon group having a substituted or unsubstituted amino group bonded to a silicon atom via at least one carbon atom includes an aminomethyl group, a ⁇ -aminoethyl group, a ⁇ -aminopropyl group. , ⁇ -aminobutyl group, ⁇ - (methylamino) propyl group, ⁇ - (ethylamino) propyl group, N- ( ⁇ -aminoethyl) - ⁇ -aminopropyl group, N- ( ⁇ -dimethylaminoethyl)- Examples thereof include a ⁇ -aminopropyl group.
- R 1 other than these amino group-containing hydrocarbon groups includes a hydrogen atom, a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group; an alkenyl group such as a vinyl group and a propenyl group; phenyl An aryl group such as a group; an aralkyl group such as a phenethyl group; and those in which some of hydrogen atoms of these hydrocarbon groups are substituted with a halogen atom, a nitrile group, or the like are exemplified.
- a hydrogen atom, a methyl group, a vinyl group, and a phenyl group are preferable, and a methyl group is particularly preferable because of ease of synthesis and handling.
- R 2 examples include a hydrogen atom, a methyl group, an ethyl group, a propyl group, and a butyl group. From the viewpoint of ease of synthesis and ease of handling, a hydrogen atom, a methyl group, and an ethyl group are preferable.
- a and b are numbers satisfying the relationship of 1 ⁇ a ⁇ 2.5, 0 ⁇ b ⁇ 0.5, and 1 ⁇ a + b ⁇ 2.5.
- a and (a + b) are less than 1 or more than 2.5, the adhesion to the substrate is insufficient.
- b represents the number of hydroxyl groups or alkoxy groups bonded to the silicon atom, and may be 0.5 or less, but if it exceeds 0.5, the storage stability of the coating agent is lowered.
- the degree of polymerization n of the amino group-containing polyorganosiloxane represented by the above average composition formula is such that the ease of synthesis, the viscosity of the composition before curing does not interfere with the work, and after curing From the viewpoint of the adhesiveness of the film, the range is 4 to 5,000, preferably 4 to 1,000.
- the degree of polymerization is lower than 4, the adhesiveness is not sufficiently improved, and when the degree of polymerization is higher than 5,000, it is difficult to synthesize and the viscosity increases, making it difficult to handle.
- the amount of the amino group in the amino group-containing polysiloxane may be an amount such that the amino group-containing polysiloxane alone is water-insoluble, and the amino equivalent is 100 to 15,000 (g / mol), preferably 150 to 1,000 (g / mol). When the amino equivalent exceeds 15,000 (g / mol) or the amino equivalent is less than 100 (g / mol), the effect of improving the adhesion is small.
- the chlorinated polyolefin as the component (b) used in the embodiment of the present invention has excellent adhesion (adhesiveness) to a rubber substrate such as EPDM in the film obtained from the coating agent composition of the embodiment. Gives wear resistance. Moreover, it is excellent in stability after blending each component and enables a long pot life.
- the chlorinated polyolefin is preferably blended in the form of an emulsion.
- an emulsion There are no particular restrictions on the chlorine content or the molecular weight of the chlorinated polyolefin resin that is the base of the chlorinated polyolefin emulsion, but modified chlorinated polypropylene having a maleic anhydride group as a reactive group because of its availability. It is preferable to use an emulsion of
- the blending amount of the chlorinated polyolefin as the component (b) is 50 to 500 parts by weight, more preferably 100 to 250 parts by weight with respect to 100 parts by weight of the amino group-containing polysiloxane as the component (a).
- the amount of the component (b) is limited to the above range, and if it is less than 50 parts by weight, the adhesion to the rubber base material and the wear resistance cannot be sufficiently improved, while 500 weights. This is because even if blended in excess of the parts, the effect of imparting adhesion to the rubber base material and imparting abrasion resistance is saturated, and other properties such as weather resistance are deteriorated.
- the compounding quantity of (b) chlorinated polyolefin and the compounding quantity of (a) amino group containing polysiloxane shall show the quantity as an active ingredient in an emulsion, when these are mix
- the water dispersible polyurethane resin which is the component (c) used in the embodiment of the present invention imparts water resistance and abrasion resistance to the film obtained from the coating agent composition of the embodiment.
- a water-resistant coating can be obtained, so that the ionomer-type polyurethane resin is dispersed in water.
- the body is preferred.
- An aqueous dispersion of an ionomer type polyurethane resin can be obtained by a known method.
- an organic solvent solution or an organic solvent dispersion of a hydrophilic group-containing polyurethane resin obtained by reacting a hydrophilic group-containing compound with another active hydrogen-containing compound and polyisocyanate is emulsified in water.
- a method of obtaining an ionomer resin, and (2) a hydrophilic group-containing terminal isocyanate group-containing urethane prepolymer obtained by reacting a hydrophilic group-containing compound, another active hydrogen-containing compound, and a polyisocyanate with water examples thereof include a method of obtaining an ionomer resin by dispersing and reacting with a polyamine.
- examples of the hydrophilic group-containing compound include sulfonic acid-containing compounds such as 2-oxyethanesulfonic acid, sulfosuccinic acid, sulfanilic acid, 2,4-diaminotoluenesulfonic acid, 2,2-dimethylolpropionic acid, And carboxylic acid-containing compounds such as oxymaleic acid and 3,4-diaminobenzoic acid, polyoxyethylene glycol having at least one active hydrogen in the polymer, or polyoxyethylene-polyoxypropylene copolymer glycol. .
- active hydrogen-containing compounds include, for example, high molecular weight compounds such as polyester polyols and polyether polyols, polyoxy compounds typified by glycerin and trimethylolpropane, and low molecular weight compounds such as diamine compounds typified by ethylenediamine and piperazine. Is mentioned.
- polyisocyanate examples include 2,4-tolylene diisocyanate, phenylene diisocyanate, 4,4-diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, and isophorone diisocyanate. These reactions can be performed in the absence of a solvent, but may be performed in an organic solvent.
- the obtained resin is neutralized with a non-volatile base such as caustic soda and caustic potash, amines such as triethylamine and dimethylethanolamine, or ammonia, and an ionomer resin is obtained by adding water.
- a non-volatile base such as caustic soda and caustic potash, amines such as triethylamine and dimethylethanolamine, or ammonia
- Such an aqueous dispersion of an ionomer type polyurethane resin is preferably an anionic ionomer type aqueous dispersion in which the counter ion of the ion forming group is an ammonium ion (NH 4 + ) in order to suppress side reactions.
- the amount of the water-dispersible polyurethane resin (ionomer type polyurethane resin aqueous dispersion) as component (c) is 10 to 10 parts by weight based on 100 parts by weight of the amino group-containing polysiloxane as component (a).
- the amount is 500 parts by weight, more preferably 50 to 300 parts by weight.
- the amount of component (c) is limited to the above range, if it is less than 10 parts by weight, the effect of imparting water resistance and wear resistance to the rubber substrate cannot be sufficiently achieved, When the amount exceeds 500 parts by weight, the flexibility of the coating is lost, whitening and cracking occur, and other properties such as water repellency and non-adhesiveness of the coating surface also deteriorate.
- the coating agent composition according to the embodiment of the present invention comprises spherical fine particles comprising a rubber-like elastic body as the component (B) in the aqueous emulsion (A) containing the components (a) to (c) described above. It is composed by blending.
- the spherical fine particles of the rubber-like elastic body which is the component (B) used in the embodiment, lowers the coefficient of friction of the film obtained from the coating agent composition and imparts good slipperiness.
- the molded product with the coating does not generate squeal when rubbing the glass in a wet state and does not damage the painted surface by rubbing with the metal painted surface. Satisfy the required characteristics.
- the type of rubber-like elastic body constituting the spherical fine particles is not particularly limited, but the hardness (rubber hardness) value measured according to JIS K 6253 durometer type A type is less than 90 degrees, more preferably 60-80. It is preferable to use an elastic material in the range of degrees. When fine particles of a hard or semi-hard material having a hardness of 90 degrees or more are used, the above-described effects of suppressing squealing in a wet state and preventing damage to the metal coating surface cannot be obtained sufficiently.
- the spherical fine particles of such (B) rubber-like elastic body from the viewpoint of availability and synthesis, crosslinked polyurethane-based, crosslinked polymethyl methacrylate-based, crosslinked polyacrylic ester-based, crosslinked polybutyl methacrylate-based, It is preferable to use fine particles made of a thermosetting polymer such as polyamide.
- the average particle diameter of the fine particles is preferably 0.1 to 100 ⁇ m, more preferably 1 to 20 ⁇ m. If the average particle size is less than 0.1 ⁇ m, the slipping property of the coating is deteriorated. Conversely, if the average particle size exceeds 100 ⁇ m, the wear resistance is deteriorated, which is not preferable.
- the blending amount of the spherical fine particles of the rubber-like elastic body as the component (B) is 20 to 300 parts by weight, more preferably 50 to 200 parts by weight with respect to 100 parts by weight of the amino group-containing polysiloxane as the component (a). Part.
- the blending amount of the component (B) is limited to the above range. If it is less than 20 parts by weight, the slipperiness of the film is inferior. On the other hand, if it exceeds 300 parts by weight, the paintability deteriorates and the film has flexibility. Because it is lost. Moreover, when the compounding quantity of (B) component exceeds 300 weight part, since abrasion resistance worsens, it is unpreferable.
- the coating agent composition of the embodiment of the present invention can be obtained by mixing each of the components (a) to (c) and (B) a dispersion of spherical fine particles of a rubber-like elastic body.
- the mixing order of the components (a) to (c) and the aqueous dispersion of spherical fine particles of the (B) rubber-like elastic body is not particularly limited.
- the following components may be further blended in the coating composition of the embodiment of the present invention. That is, for the purpose of improving weather resistance, inorganic and organic ultraviolet absorbers are used, and for the purpose of improving matting properties, inorganic fillers such as silica powder having an average particle size of about 0.01 to 50 ⁇ m or polyethylene are used. Inorganic pigments for the purpose of coloring organic fillers such as polyolefins and polycarbonate resins, and epoxy-based, melamine-based, imide-based, amine-based, and isocyanate-based cross-linking agents for the purpose of improving wear resistance, respectively. It can be added within a range that does not change the purpose. Furthermore, it is optional to appropriately mix a leveling agent, a dispersant, a thickener, an antifoaming agent, and an antiseptic as necessary.
- the coating agent composition of the present invention is applied to the surface of a substrate made of paper, rubber, plastic, metal or the like by a method such as dip coating, spray coating, brush coating, knife coating or roll coating. Subsequently, it is left to stand for several hours at room temperature, or is appropriately heated according to the degree of heat resistance of the substrate to cure the coating film.
- the heating conditions are 120 to 180 ° C. for 10 to 30 seconds when the substrate is paper, 80 to 180 ° C. for 1 to 5 minutes when the substrate is rubber, and 70 for plastic. It is preferable that the temperature is from 150 ° C. to 30 seconds to 2 minutes.
- the coating agent composition of the embodiment of the present invention when the surface of various base materials is treated, it is excellent in uniform coating property and adhesiveness to the base material as compared with the conventional treatment method using a silicone composition.
- a cured film having excellent wear resistance is formed.
- silicones such as tactile sensation and slipping feeling against rubber and plastic substrates, especially those made of foamed EPDM rubber and TPO, for which sufficient adhesiveness was not obtained with conventional silicone compositions for forming non-tacky films. It is possible to form a cured film having excellent coating properties and excellent adhesion and wear resistance not found in conventional ones.
- the coating agent composition of the embodiment of the present invention forms a cured film at room temperature or relatively low temperature, it is possible to process even a base material with low heat resistance or a large base material that is difficult to heat-treat. And forms a cured film having good non-adhesiveness to other substances, water repellency, and excellent wear resistance. Furthermore, it has excellent storage stability, excellent stability after blending each component, and a long pot life. Furthermore, since an organic solvent or an organometallic catalyst is not used and a dehydrogenative condensation reaction is not used for forming a cured film, it is excellent in terms of environment and safety.
- the coating agent composition of the embodiment of the present invention is used as a surface treatment agent for rubber parts such as weather strips for automobiles, printer blades, anti-vibration rubbers, gaskets for building materials, in applications where EPDM rubber is used. It can be preferably used.
- parts means “parts by weight”
- % means “% by weight”.
- physical property values such as viscosity all indicate measured values at 25 ° C. and relative humidity (RH) 50%.
- a fine particle component (elastic spherical fine particle-1, elastic spherical fine particle-2, or inelastic spherical fine particle) is mixed with water and uniformly dispersed, and this aqueous dispersion is then mixed with an amino group-containing silicone emulsion.
- the emulsion obtained by mixing the chlorinated polyolefin emulsion and the polyurethane resin aqueous dispersion was added, and the mixture was uniformly stirred and mixed.
- Example 5 an epoxy-based crosslinking agent was further added and mixed with this.
- Comparative Example 6 a polydimethylsiloxane emulsion, a methylhydrogensiloxane emulsion, and dibutyltin dilaurate were further added and mixed.
- the amino group-containing silicone emulsion-1 has the formula: ⁇ H 2 N (CH 2 ) 2 NH (CH 2 ) 3 ⁇ Si (OH) 2 O ⁇ (CH 3 ) 2 SiO ⁇ 15 H
- An emulsion polymerization emulsion containing 30% of an amino group-containing polydimethylsiloxane having a gel-like film-forming property represented by the formula: (CH 3 ) 3 SiO ⁇ (CH 3 ) 2 SiO ⁇ 200 Si (CH 3 ) ⁇ NH (CH 2 ) 2 NH 2 ⁇ OSi (CH 3 ) 3 Is a mechanically emulsified emulsion containing 30% of the amino group-containing polydimethylsiloxane represented by formula (1).
- Chlorinated polyolefin emulsion-1 is an emulsion containing 30% maleic anhydride-modified chlorinated polypropylene (maleic anhydride content 1.7%, chlorine content 17%, molecular weight about 60,000).
- Emulsion-2 is an emulsion containing 30% maleic anhydride-modified chlorinated polypropylene (maleic anhydride content 1.4%, chlorine content 15% by weight, molecular weight about 100,000).
- the polyurethane resin aqueous dispersion-1 is an aqueous dispersion containing 20% of an ionomer type polyurethane resin having a polyester skeleton
- the polyurethane resin aqueous dispersion-2 is containing 30% of an ionomer type polyurethane resin having a polyether skeleton. It is a water dispersion.
- Elastic spherical fine particle-1 is a crosslinked polyurethane soft powder (average particle size 8 ⁇ m) having a hardness (hereinafter simply referred to as JIS hardness) of 74 measured according to JIS K 6253 with a durometer type A type, and is elastic.
- Spherical fine particle-2 is a crosslinked polyacrylate powder (average particle size 15 ⁇ m) having a JIS hardness of 78.
- the inelastic spherical fine particles are polymethylsilsesquioxane powder (average particle size 6 ⁇ m) having a JIS hardness of 90 or more.
- the epoxy-based cross-linking agent is polyhydroxyalkane polyglycidyl ether (viscosity 5000 mPa ⁇ s).
- the polydimethylsiloxane emulsion is an emulsion polymerization emulsion containing 50% of a hydroxyl group-blocked polydimethylsiloxane having a viscosity of 1,400,000 mPa ⁇ s, and the methylhydrogensiloxane emulsion has an average formula: This is a mechanically emulsified emulsion containing polymethylhydrogensiloxane represented by (CH 2 ) 3 SiO (CH 3 HSiO) 50 Si (CH 3 ) 3 at a ratio of 30%.
- the coating composition obtained in Examples 1 to 5 and Comparative Examples 1 to 6 is applied to the surface of a sheet made of foamed EPDM rubber and TPO, and the film thickness of the cured film becomes 10 ⁇ m using a spray gun.
- Each was applied as follows. Thereafter, water was volatilized from the coating film, and then heat-dried in an oven at 180 ° C. for 2 minutes to form a cured film.
- the surface-treated foamed EPDM rubber sheet and TPO sheet were examined for the adhesion of the cured film to the substrate by the following methods. Further, the cured film formed on the foamed EPDM rubber sheet was examined for water repellency, water resistance, coefficient of friction, wear resistance, and squeal by the following methods. Furthermore, the presence or absence of bleed-out from the coating surface and the pot life of the coating composition were also examined. The results are shown in Table 1.
- Adhesiveness Cross-cut 100 squares by putting 11 parallel lines vertically and horizontally at 1 mm intervals on the surface of the coating, and after sticking the adhesive tape on it, the adhesive tape is peeled off and the squares that do not peel off Number was measured.
- a silicone adhesive YR3340 made by Momentive Performance Material Japan GK is coated on a polyester film so as to have a thickness of 40 ⁇ m, and then left in a constant temperature and high humidity chamber for 48 hours. It was used.
- a clock meter type abrasion test was conducted according to JIS K 6404-16, and the number of frictions when the cured coating peeled was measured.
- the coating agent compositions obtained in Examples 1-5 have a longer pot life and wider curing conditions than the compositions obtained in Comparative Examples 1-6. And according to this coating agent composition, it is excellent in adhesiveness with respect to the base material which consists of EPDM rubber and TPO, and can form the film which has favorable slipperiness, water repellency, and water resistance. In addition, this coating has no bleeding out, has a low coefficient of friction and excellent wear resistance, and does not generate squealing due to rubbing with glass even in a wet state.
- the coating agent composition of the present invention has excellent adhesion and good adhesion to a base material made of rubber or plastic, particularly a base material made of foamed or non-foamed EPDM rubber and TPO.
- a cured film having excellent slipperiness, non-adhesiveness, water repellency and the like can be formed. Moreover, this film has a low coefficient of friction and excellent wear resistance.
- the coating agent composition of the present invention can be suitably used as a surface treating agent for rubber parts such as automotive weather strips, printer blades, vibration-proof rubbers, and building material gaskets.
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Abstract
Description
{H2N(CH2)2NH(CH2)3}Si(OH)n[O{(CH3)2SiO}15H]3-n
(但し、n=1または2)で表される化合物を挙げることができる。
表1に示す各成分を同表に示す組成で配合し、以下に示すようにして均一に撹拌・混合し、コーティング剤組成物を得た。すなわち、まず微粒子状成分(弾性球状微粒子-1、弾性球状微粒子-2、あるいは非弾性球状微粒子)を水と混合して均一に分散させた後、この水分散液を、アミノ基含有シリコーンエマルジョンと塩素化ポリオレフィンエマルジョンおよびポリウレタン樹脂水分散体を混合して得られたエマルジョンに加え、均一に撹拌・混合した。実施例5においては、これにさらにエポキシ系架橋剤を加えて混合した。また比較例6においては、ポリジメチルシロキサンエマルジョンとメチルハイドロジェンシロキサンエマルジョンおよびジブチルスズジラウレートをさらに加えて混合した。
{H2N(CH2)2NH(CH2)3}Si(OH)2O{(CH3)2SiO}15H
で表されるゲル状被膜形成性を有するアミノ基含有ポリジメチルシロキサンを、30%の割合で含有する乳化重合エマルジョンであり、アミノ基含有シリコーンエマルジョン-2は、式:
(CH3)3SiO{(CH3)2SiO}200Si(CH3){NH(CH2)2NH2}OSi(CH3)3
で表されるアミノ基含有ポリジメチルシロキサンを、30%の割合で含有する機械乳化エマルジョンである。
(CH2)3SiO(CH3HSiO)50Si(CH3)3で表されるポリメチルハイドロジェンシロキサンを30%の割合で含有する機械乳化エマルジョンである。
被膜表面に1mm間隔で縦横に各11本の平行線を入れて100個のマス目をクロスカットし、その上に粘着テープを付着させた後、粘着テープを剥離して、剥離しないマス目の数を測定した。なお、粘着テープとしては、ポリエステルフィルム上にシリコーン粘着剤YR3340(モメンティブ・パフォーマンス・マテリアル・ジャパン合同会社製)を40μmの厚さになるようにコーティングした後、恒温高湿室に48時間放置したものを使用した。
硬化被膜表面の水滴の接触角を、接触角計を用いて測定した。そして、接触角が100°以上を示すものを撥水性良好とし、接触角が100°未満であるものを撥水性不良と判定した。
表面処理された発泡EPDMゴムシートを70℃の温水中に7日間浸漬した後取り出し、乾燥後の硬化被膜の外観を目視観察した。耐水試験前後で被膜の外観に変化のないものを良好とし、被膜に白化や剥がれなど変化が見られたものを不良とした。
硬化被膜の表面に幅10mm、長さ100mmのガラス板を置き、200gの荷重をかけてガラス板を900mm/min.の速度で硬化被膜に沿って移動させ、そのとき得られる引っ張り応力から動摩擦係数を求めた。なお、ガラス板が動き出すときの値である最大静止摩擦係数が2.0を超える場合、安全装置が働き測定不能となる。
JIS K 6404-16に拠りクロックメーター型摩耗試験を行い、硬化被膜が剥離したときの摩擦回数を測定した。
幅100mm、長さ100mmのガラス板上に0.5mLの水を均一に拡げ、被膜表面をガラス板に擦り付けた際に発生する音を調べた。音が発生しないものを良好とした。
被膜表面を塗装パネルに25℃で24時間押し当て、塗装パネル表面へのブリードアウト物質の移行の有無を、目視により調べた。そして、移行が確認できた場合ブリードアウト有り、移行が確認できなかった場合ブリードアウト無しと判定した。
コーティング剤組成物の調製後、室温(25℃)において液にゲルが生成するまでの時間を調べた。
Claims (9)
- (A)(a)自己架橋性を有するアミノ基含有ポリオルガノシロキサンと、(b)塩素化ポリオレフィンと、(c)水分散性ポリウレタン樹脂をそれぞれ含有する水系エマルジョンと、
(B)前記(A)水系エマルジョンに混合・分散されたゴム状弾性体からなる球状微粒子
を含むことを特徴とするコーティング剤組成物。 - 前記(A)水系エマルジョンは、前記(a)アミノ基含有ポリオルガノシロキサンを含む第1のエマルジョンと、前記(b)塩素化ポリオレフィンを含む第2のエマルジョンと、前記(c)ポリウレタン樹脂の水分散体を混合してなることを特徴とする請求項1記載のコーティング剤組成物。
- 前記(a)アミノ基含有ポリオルガノシロキサンは、一般式:[R1 aSi(OR2)bO(4-a-b)/2]n
(式中、R1は、水素原子および1価の置換または非置換の炭化水素基から選ばれる1価の基を示し、1分子中の全R1のうち少なくとも1個は、1個以上の炭素原子を介してケイ素原子に結合した置換または非置換のアミノ基を有する1価の炭化水素基である。R2は、水素原子および1価の置換または非置換の炭化水素基から選ばれる1価の基を示す。aおよびbは、1≦a≦2.5、0≦b≦0.5、1≦a+b≦2.5の関係を満たす数であり、nは4~5,000の整数を示す。)で示されることを特徴とする請求項2記載のコーティング剤組成物。 - 前記(c)水分散性ポリウレタン樹脂が、アイオノマー型ポリウレタン樹脂を含有する水分散体であることを特徴とする請求項1乃至3のいずれか1項記載のコーティング剤組成物。
- 前記アイオノマー型ポリウレタン樹脂を含有する水分散体が、イオン形成性基の対イオンがアンモニウムイオン(NH4 +)であるアニオン性アイオノマー型ポリウレタン樹脂の水分散体であることを特徴とする請求項4記載のコーティング剤組成物。
- 前記(B)球状微粒子は、JIS K 6253に拠る硬さが90度未満のゴム状弾性体から構成されることを特徴とする請求項1乃至5のいずれか1項記載のコーティング剤組成物。
- 前記(B)球状微粒子は、架橋ポリウレタン系、架橋ポリメタクリル酸メチル系、架橋ポリアクリル酸エステル系、架橋ポリメタクリル酸ブチル系、ポリアミド系の各ポリマーから選ばれる少なくとも1種からなることを特徴とする請求項1乃至6のいずれか1項記載のコーティング剤組成物。
- 前記(a)アミノ基含有ポリオルガノシロキサン100重量部に対して、(b)塩素化ポリオレフィン50~500重量部と、(c)水分散性ポリウレタン樹脂10~500重量部と、(B)ゴム状弾性体の球状微粒子20~300重量部をそれぞれ含有することを特徴とする請求項1乃至7のいずれか1項記載のコーティング剤組成物。
- 発泡あるいは非発泡のエチレン-プロピレン-ジエン三元共重合体または熱可塑性オレフィン系エラストマーから成る成形体の上に塗布され、被膜を形成することを特徴とする請求項1乃至8のいずれか1項記載のコーティング剤組成物。
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EP10809702.3A EP2468831B1 (en) | 2009-08-19 | 2010-08-04 | Coating agent composition |
CN201080037343.5A CN102549090B (zh) | 2009-08-19 | 2010-08-04 | 涂层剂组合物 |
US13/390,446 US8871857B2 (en) | 2009-08-19 | 2010-08-04 | Coating composition |
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JP2012176682A (ja) * | 2011-02-25 | 2012-09-13 | Bridgestone Corp | 空気入りタイヤ及びタイヤ保護剤 |
US20150273953A1 (en) * | 2012-11-05 | 2015-10-01 | Bridgestone Corporation | Rubber laminated body and tire |
JP2019111750A (ja) * | 2017-12-25 | 2019-07-11 | 日鉄日新製鋼株式会社 | 塗装金属板およびこれを用いた外装建材 |
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US5861147A (en) | 1997-06-09 | 1999-01-19 | The Procter & Gamble Company | Methods for controlling environmental odors on the body using compositions comprising uncomplexed cyclodextrins and perfume |
JP2012219183A (ja) * | 2011-04-08 | 2012-11-12 | Sumico Lubricant Co Ltd | 塗料組成物、塗膜組成物、及びエラストマー被覆ガスケット、並びにガスケットの固着防止方法 |
CN105088503B (zh) * | 2015-07-08 | 2017-05-24 | 浙江三十秋服饰有限公司 | 薄型混纺针织毛衫及防缩抗起球处理方法 |
JP2017066205A (ja) * | 2015-09-28 | 2017-04-06 | 株式会社ソフト99コーポレーション | 撥水性コーティング組成物 |
CN108690413B (zh) * | 2018-05-28 | 2020-06-12 | 常州市武进晨光金属涂料有限公司 | 车辆塑料用单组份水性导电底漆及其制备方法 |
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JP2012176682A (ja) * | 2011-02-25 | 2012-09-13 | Bridgestone Corp | 空気入りタイヤ及びタイヤ保護剤 |
US20150273953A1 (en) * | 2012-11-05 | 2015-10-01 | Bridgestone Corporation | Rubber laminated body and tire |
JP2019111750A (ja) * | 2017-12-25 | 2019-07-11 | 日鉄日新製鋼株式会社 | 塗装金属板およびこれを用いた外装建材 |
JP6992495B2 (ja) | 2017-12-25 | 2022-01-13 | 日本製鉄株式会社 | 塗装金属板およびこれを用いた外装建材 |
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EP2468831B1 (en) | 2018-05-23 |
US20120165456A1 (en) | 2012-06-28 |
JP4653845B2 (ja) | 2011-03-16 |
CN102549090A (zh) | 2012-07-04 |
EP2468831A1 (en) | 2012-06-27 |
JP2011042698A (ja) | 2011-03-03 |
KR20120049283A (ko) | 2012-05-16 |
BR112012003604A2 (pt) | 2016-02-23 |
US8871857B2 (en) | 2014-10-28 |
CN102549090B (zh) | 2014-12-10 |
EP2468831A4 (en) | 2015-01-28 |
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