WO2023282106A1 - 硬化性組成物、硬化被膜および物品 - Google Patents
硬化性組成物、硬化被膜および物品 Download PDFInfo
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- WO2023282106A1 WO2023282106A1 PCT/JP2022/025506 JP2022025506W WO2023282106A1 WO 2023282106 A1 WO2023282106 A1 WO 2023282106A1 JP 2022025506 W JP2022025506 W JP 2022025506W WO 2023282106 A1 WO2023282106 A1 WO 2023282106A1
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- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- KQJBQMSCFSJABN-UHFFFAOYSA-N octadecan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCCCCCCCCCCCCCCCC[O-].CCCCCCCCCCCCCCCCCC[O-].CCCCCCCCCCCCCCCCCC[O-].CCCCCCCCCCCCCCCCCC[O-] KQJBQMSCFSJABN-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- KSCKTBJJRVPGKM-UHFFFAOYSA-N octan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-] KSCKTBJJRVPGKM-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 125000005740 oxycarbonyl group Chemical group [*:1]OC([*:2])=O 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 125000002972 p-tolylamino group Chemical group [H]N(*)C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 125000006678 phenoxycarbonyl group Chemical group 0.000 description 1
- 125000001476 phosphono group Chemical group [H]OP(*)(=O)O[H] 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 125000000587 piperidin-1-yl group Chemical group [H]C1([H])N(*)C([H])([H])C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 229960005235 piperonyl butoxide Drugs 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- IKNCGYCHMGNBCP-UHFFFAOYSA-N propan-1-olate Chemical compound CCC[O-] IKNCGYCHMGNBCP-UHFFFAOYSA-N 0.000 description 1
- ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000006254 rheological additive Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical compound [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- JKUYRAMKJLMYLO-UHFFFAOYSA-N tert-butyl 3-oxobutanoate Chemical compound CC(=O)CC(=O)OC(C)(C)C JKUYRAMKJLMYLO-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- OPSWAWSNPREEFQ-UHFFFAOYSA-K triphenoxyalumane Chemical compound [Al+3].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 OPSWAWSNPREEFQ-UHFFFAOYSA-K 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- 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
- C08L83/16—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 in which all the silicon atoms are connected by linkages other than oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
-
- 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
- C09D183/16—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 in which all the silicon atoms are connected by linkages other than oxygen atoms
-
- 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
-
- 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
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C08G77/60—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 in which all the silicon atoms are connected by linkages other than oxygen atoms
- C08G77/62—Nitrogen atoms
Definitions
- the present invention relates to a curable composition that is excellent in dryness, recovery workability after a certain period of time, and water repellency of the film.
- curable compositions were applied and applied to the painted steel plates of automobile bodies for the purpose of protecting them and improving their appearance.
- Japanese Unexamined Patent Application Publication No. 2014-139301 discloses a curable composition having a polysilazane compound as a main component and having excellent water repellency.
- the curable composition described in JP-A-2014-139301 dries too quickly after the start of application, resulting in poor workability such as difficulty in wiping immediately.
- unevenness a portion where the thickness is not uniform
- recovery work is often performed to remove the unevenness by wiping the thickness of the curable composition with a microfiber or the like. Therefore, the curable composition is also required to have ease of recovery work (hereinafter also referred to as "recovery workability").
- the curable composition described in JP-A-2014-139301 has good recovery workability immediately after the start of application, but after a certain period of time has elapsed, the recovery workability is reduced and wiped. It was difficult to lift. Furthermore, when forming a coating film on the surface of a coated steel plate of an automobile body, it is required to impart or improve water repellency, so the coating film after curing (cured coating) is also required to have good water repellency. .
- the present inventors have found a method for obtaining a curable composition that is excellent in drying property, recovery workability after a certain period of time, and water repellency of the film, and completed the present invention. came to.
- component (D) is an organic polysilazane compound or a polysiloxazane compound.
- component (E) contains at least one selected from the group consisting of an organic titanium compound, an organic aluminum compound, an inorganic acid compound and an organic base compound. or 2.
- the total amount of components (A) to (C) is 10 to 800 parts by mass per 10 parts by mass of component (D). ⁇ 3.
- the curable composition according to any one of .
- component (C) contains at least one selected from the group consisting of isoparaffins having 14 to 18 carbon atoms and normal paraffins having 13 to 17 carbon atoms.
- component (C) contains at least one selected from the group consisting of isoparaffins having 14 to 18 carbon atoms and normal paraffins having 13 to 17 carbon atoms.
- An article having the cured film formed thereon An article selected from the group consisting of automobiles, motorcycles, bicycles, rail vehicles, solar panels, vending machines and buildings.
- X to Y is used to include the numerical values (X and Y) before and after it as lower and upper limits, respectively, and means “X or more and Y or less”.
- Concentration and % represent mass concentration and mass %, respectively, unless otherwise specified, and ratios are mass ratios unless otherwise specified.
- operations and measurements of physical properties and the like are performed under the conditions of room temperature (20 to 25° C.)/relative humidity of 40 to 55% RH.
- a and/or B is meant to include each of A, B and combinations thereof.
- the curable composition according to one aspect of the present invention contains the following components (A) to (E), (A) component, (B) component and ( With respect to the total 100% by mass of the components C), 12 to 85% by mass of the component (A), 12 to 85% by mass of the component (B), and 0.5 to 20% by mass of the component (C) ( However, the sum of the (A) component, the (B) component and the (C) component is 100% by mass): (A) an organic solvent having an initial boiling point of 85°C or higher and lower than 145°C (B) an organic solvent having an initial boiling point of 145°C or higher and lower than 190°C (C) an organic solvent having an initial boiling point of 190°C or higher and lower than 250°C solvent (D) polysilazane compound (E) catalyst;
- the curable composition contains components (A) to (E), which will be detailed below, and contains components (A) to (C) in a specific ratio.
- the curable composition according to the present invention is excellent in drying property, recovery workability after a certain period of time, and water repellency of the film.
- “after a certain period of time” is not particularly limited, but means, for example, after 30 minutes have passed.
- “recovery workability after a certain period of time” is also simply referred to as “recovery workability”.
- the initial boiling point is the value measured by the atmospheric distillation method described in JIS K 0066:1992 (distillation test method for chemical products).
- Component (A) contained in the curable composition of the present invention is an organic solvent having an initial boiling point of 85°C or higher and lower than 145°C.
- organic solvent means a liquid organic compound capable of dissolving or uniformly dispersing the components (D) and (E) contained in the curable composition.
- liquid refers to those having fluidity at 25°C. More specifically, the term “liquid” refers to those having a viscosity of 1,000 Pa ⁇ s or less measured with a Brookfield viscometer at 25° C. under atmospheric pressure.
- the viscosity of the organic solvent is preferably 100 Pa s or less, more preferably 1,000 mPa s or less (1 Pa s or less), and 150 mPa s or less.
- the lower limit is not particularly limited, but is, for example, 0.1 mPa ⁇ s or more.
- the content of component (A) in the curable composition is 12 to 85% by mass when the total mass of components (A) to (C) is taken as 100% by mass.
- the initial boiling point of component (A) is more preferably 90 to 140°C, particularly preferably 95 to 135°C, most preferably 110 to 135°C.
- Organic solvents that can be used as component (A) include aliphatic hydrocarbon-based solvents, aromatic hydrocarbon-based solvents, etc. Among them, aliphatic hydrocarbon-based solvents are preferred. Furthermore, from the viewpoint of volatility and recovery workability, the component (A) has an initial boiling point in the above range and contains at least one selected from aliphatic hydrocarbons having 6 to 10 carbon atoms. Hydrocarbon solvents are preferred.
- the aliphatic hydrocarbon-based solvent that can be used as component (A) is not particularly limited, but for example, chain aliphatic hydrocarbons such as isoparaffins having 7 to 10 carbon atoms and normal paraffins having 6 to 9 carbon atoms; Cycloaliphatic hydrocarbons such as alkylcyclohexane having a number of 7 to 8; or petroleum hydrocarbon solvents containing these; It is preferred to use a hydrogen solvent.
- component (A) is preferably a petroleum hydrocarbon solvent containing at least one selected from isoparaffins having 7 to 10 carbon atoms and normal paraffins having 6 to 9 carbon atoms.
- Component (A) is more preferably a petroleum hydrocarbon solvent containing at least one selected from isoparaffins having 7 to 10 carbon atoms, and particularly preferably at least one selected from isoparaffins having 8 to 9 carbon atoms. It is a petroleum-based hydrocarbon solvent containing
- component (A) examples include isooctane, isononane, and petroleum-based hydrocarbon solvents containing these.
- Component (A) is preferably a petroleum hydrocarbon solvent containing isooctane and/or isononane, and particularly preferably a petroleum hydrocarbon solvent containing isononane.
- the organic solvent as the component (A) may be used alone or in combination of multiple types. In addition, when 2 or more types are used together, content of (A) component points out a total amount.
- component (A) Commercially available products of component (A) include Marcazol 8 (initial boiling point 97 ° C.) (manufactured by Maruzen Petrochemical Co., Ltd.), Kyowasol (registered trademark) C-900 (initial boiling point 131 ° C.) (manufactured by KH Neochem Co., Ltd. ), Isopar (registered trademark) C (initial boiling point 98° C.) (manufactured by Standard Oil Osaka Co., Ltd.), and the like.
- the amount of component (A) added is 12 to 85% by mass relative to the total 100% by mass of component (A), component (B) and component (C), and is preferably is 16 to 80% by mass, particularly preferably 20 to 70% by mass.
- the content of component (A) is preferably 80 to 350 parts by mass, more preferably 100 to 300 parts by mass, and particularly preferably 120 to 250 parts by mass with respect to 10 parts by mass of component (D) described later. parts by mass, most preferably 130 to 230 parts by mass.
- Component (B) contained in the curable composition of the present invention is an organic solvent having an initial boiling point of 145°C or higher and lower than 190°C. Further, the content of component (B) in the curable composition is 12 to 85% by mass when the total mass of components (A) to (C) is taken as 100% by mass.
- the content of the component (B) within the predetermined range as described above and combining it with the other components of the present invention (especially the components (A) and (C)), excellent recovery workability after a certain period of time has elapsed. A curable composition can be obtained. When the curable composition does not contain the component (B), recovery workability is lowered (Comparative Examples 1 and 3 described later).
- the initial boiling point of component (B) is more preferably 155 to 185°C, particularly preferably 165 to 180°C.
- Organic solvents that can be used as component (B) include aliphatic hydrocarbon-based solvents and aromatic hydrocarbon-based solvents, among which aliphatic hydrocarbon-based solvents are preferred. Furthermore, from the viewpoint of volatility and recovery workability, the component (B) has an initial boiling point in the above range and contains at least one selected from aliphatic hydrocarbons having 9 to 14 carbon atoms. Hydrocarbon solvents are preferred.
- the aliphatic hydrocarbon-based solvent that can be used as the component (B) is not particularly limited, but for example, chain aliphatic hydrocarbons such as isoparaffins having 10 to 14 carbon atoms and normal paraffins having 9 to 13 carbon atoms; Cycloaliphatic hydrocarbons such as alkylcyclohexane having numbers 7 to 12; or petroleum hydrocarbon solvents containing these; It is preferred to use a hydrogen solvent.
- component (B) is preferably a petroleum hydrocarbon solvent containing at least one selected from isoparaffins having 10 to 14 carbon atoms and normal paraffins having 9 to 13 carbon atoms.
- Component (B) is more preferably a petroleum hydrocarbon solvent containing at least one selected from isoparaffins having 10 to 14 carbon atoms, and particularly preferably at least one selected from isoparaffins having 11 to 13 carbon atoms. is a petroleum-based hydrocarbon solvent containing
- component (B) examples include isoundecane, isododecane, isotridecane, or petroleum-based hydrocarbon solvents containing these.
- Component (B) is preferably a petroleum hydrocarbon solvent containing at least one selected from the group consisting of isoundecane, isododecane and isotridecane, more preferably a petroleum hydrocarbon solvent containing isoundecane and/or isododecane, and isododecane. Petroleum-based hydrocarbon solvents containing are particularly preferred.
- the organic solvent as component (B) may be used alone or in combination of multiple types. In addition, when 2 or more types are used together, content of (B) component points out a total amount.
- component (B) Commercially available products of component (B) include 181 Solvent (initial boiling point 178°C) (manufactured by Daishin Chemical Co., Ltd.), Marcazol R (initial boiling point 178°C) (manufactured by Maruzen Petrochemical Co., Ltd.), and Isopar (registered trademark).
- the amount of component (B) added is 12 to 85% by mass relative to the total 100% by mass of component (A), component (B) and component (C), and is preferably is 16 to 80% by mass, particularly preferably 20 to 70% by mass.
- the content of component (B) is preferably 50 to 400 parts by mass, more preferably 60 to 320 parts by mass, and particularly preferably 70 to 300 parts by mass with respect to 10 parts by mass of component (D) described later. part by mass.
- Component (C) contained in the curable composition of the present invention is an organic solvent having an initial boiling point of 190°C or higher and lower than 250°C.
- the content of component (C) in the curable composition is 0.5 to 20% by mass when the total mass of components (A) to (C) is 100% by mass.
- component (C) the drying property of the curable composition is lowered.
- component (C) the organic solvent having an initial boiling point of 190° C. or higher is not contained
- the recovery workability is lowered (Comparative Examples 2 and 6 described later).
- the initial boiling point of component (C) is more preferably 200 to 240°C, particularly preferably 210 to 230°C.
- Organic solvents that can be used as component (C) include aliphatic hydrocarbon-based solvents and aromatic hydrocarbon-based solvents, among which aliphatic hydrocarbon-based solvents are preferred. Furthermore, from the viewpoint of volatility and recovery workability, the component (C) has an initial boiling point in the above range and contains at least one selected from aliphatic hydrocarbons having 13 to 18 carbon atoms. Hydrocarbon solvents are preferred.
- Aliphatic hydrocarbon-based solvents that can be used as component (C) are not particularly limited. Petroleum-based hydrocarbon solvents containing these are mentioned.
- Component (C) is preferably a petroleum-based hydrocarbon solvent containing at least one selected from isoparaffins having 14 to 18 carbon atoms and normal paraffins having 13 to 17 carbon atoms, more preferably isoparaffins having 14 to 18 carbon atoms.
- component (C) More specific examples include isopentadecane, isohexadecane, isoheptadecane, and petroleum-based hydrocarbon solvents containing these.
- Component (C) is preferably a petroleum hydrocarbon solvent containing at least one selected from the group consisting of isopentadecane, isohexadecane and isoheptadecane, and particularly preferably a petroleum hydrocarbon solvent containing isohexadecane.
- the organic solvent as component (C) may be used alone or in combination of multiple types. In addition, when 2 or more types are used together, content of (C) component points out a total amount.
- component (C) Commercially available products of component (C) include IP Solvent 2028 (initial boiling point: 213°C) (manufactured by Idemitsu Kosan Co., Ltd.), MC531 (initial boiling point: 220°C) (manufactured by Tobu Chemical Co., Ltd.), Norper 12 (initial boiling point 209° C.), Norpar 13 (initial boiling point: 222° C.) (manufactured by Standard Oil Co., Ltd. Osaka Sales Office), etc. Among them, IP Solvent 2028 and MC531 are preferable.
- the amount of component (C) added is 0.5 to 20% by mass with respect to the total 100% by mass of component (A), component (B) and component (C). , preferably 1 to 15% by weight, particularly preferably 2 to 10% by weight, most preferably 4 to 8% by weight.
- the content of component (C) is preferably 5 to 50 parts by mass, more preferably 7 to 40 parts by mass, and particularly preferably 10 to 30 parts by mass with respect to 10 parts by mass of component (D) described later. part by mass.
- the total amount of components (A) and (B) relative to 1 part by mass of component (C) is not particularly limited, but is, for example, 5 to 80 parts by mass, preferably 7 to 60 parts by mass. It is preferably 10 to 45 parts by mass, particularly preferably 12 to 30 parts by mass, and most preferably 13 to 25 parts by mass. Within the above range, it is possible to obtain a curable composition that is particularly excellent in recovery workability after a lapse of a certain period of time.
- the total amount of components (A) to (C) is not particularly limited, but is preferably 10 to 800 parts by mass, more preferably 75 to 700 parts by mass, relative to 10 parts by mass of component (D) described later. parts by mass, more preferably 135 to 600 parts by mass, and particularly preferably 200 to 500 parts by mass. Within the above range, the drying property, the recovery workability after a certain period of time (after 10 minutes or more), and the water repellency of the film are further improved.
- the curable composition according to the present invention preferably contains only components (A) to (C) as an organic solvent. That is, the curable composition according to the present invention preferably does not substantially contain organic solvents other than components (A) to (C).
- substantially does not contain organic solvents other than components (A) to (C) means that the amount of organic solvents other than components (A) to (C) with respect to the entire organic solvent contained in the curable composition It refers to the case where the content is less than 0.01% by mass. That is, in one embodiment of the present invention, the content of the organic solvent other than the components (A) to (C) is 0.01% by mass, with the total mass of the organic solvent contained in the curable composition being 100% by mass. less than (lower limit: 0% by mass).
- Component (D) contained in the curable composition of the present invention is a polysilazane compound.
- Component (D) is not particularly limited as long as it is a compound having a plurality of Si—N bonds.
- Such a polysilazane compound undergoes a hydrolysis reaction with moisture present in the air, and the nitrogen in the molecule is eliminated to produce ammonia. It is generally known that -O bonds are formed.
- the (D) component is not particularly limited, but includes, for example, organic polysilazane compounds, inorganic polysilazane compounds, and polysiloxazan compounds.
- the component (D) is an organic polysilazane compound or a polysiloxazane compound, since it is possible to obtain a curable composition that is even more excellent in drying property, recovery workability after a certain period of time, and water repellency of the film. and more preferably an organic polysilazane compound.
- organic polysilazane compound and “inorganic polysilazane compound” have a repeating structure represented by “-(SiR 1 R 2 -NR 3 )-" in the main chain of the molecule, and "- (SiR 4 R 5 —O)—” means a compound that does not have a repeating structure.
- polysiloxazan compound refers to a repeating structure represented by “-(SiR 1 R 2 -NR 3 )-” and a repeating structure represented by "-(SiR 4 R 5 -O)-”
- a compound is meant that has both of the depicted repeating structures within the backbone of the molecule.
- R 1 , R 2 and R 3 each independently represent an organic group selected from a hydrogen atom and an optionally substituted hydrocarbon group.
- R 4 and R 5 each independently represent a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, or a cycloalkyl group having 6 to 20 carbon atoms. represents an aryl group of
- polysilazane compound When simply described as a “polysilazane compound”, the term refers to a compound having a plurality of Si--N bonds in its main chain, regardless of the presence or absence of Si--O bonds, and includes “polysiloxazane compounds.” .
- compounds having no Si—O bonds in the main chain and having Si—N bonds are referred to as “organic polysilazane compounds” or “inorganic polysilazane compounds.” called.
- R 1 , R 2 and R 3 are preferably each independently an organic group selected from a hydrogen atom and a hydrocarbon group having 1 to 6 carbon atoms which may have a substituent, and a hydrogen atom. and an aliphatic hydrocarbon group having 1 to 4 carbon atoms.
- Hydrocarbon groups having 1 to 6 carbon atoms include, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group and n-pentyl.
- aliphatic hydrocarbon group having 1 to 4 carbon atoms among the above saturated aliphatic hydrocarbon groups, unsaturated aliphatic hydrocarbon groups and alicyclic hydrocarbon groups, those having 1 to 4 carbon atoms are exemplified.
- the substituent that can substitute the hydrocarbon group is not particularly limited, but examples include halogen atoms such as fluorine, chlorine, bromine and iodine; alkyl groups such as methyl and ethyl groups; phenyl group and p-tolyl group.
- xylyl group aryl group such as naphthyl group; methoxy group, ethoxy group, alkoxy group such as tert-butoxy group; phenoxy group, aryloxy group such as p-tolyloxy group; methoxycarbonyl group, butoxycarbonyl group, 2-ethylhexyl alkoxycarbonyl groups such as oxycarbonyl group and phenoxycarbonyl group; acyloxy groups such as acetoxy group, propionyloxy group and benzoyloxy group; acyl groups such as acetyl group, benzoyl group, isobutyryl group, acryloyl group and methacryloyl group; methylamino group , an alkylamino group such as a cyclohexylamino group; a dialkylamino group such as a dimethylamino group, a diethylamino group, a morpholino group and a piperid
- the polysilazane compounds (preferably, organic polysilazane compounds, inorganic polysilazane compounds and polysiloxazane compounds) as component (D) may be used alone or in combination. In addition, when 2 or more types are used together, content of (D) component points out a total amount.
- Examples of commercially available products of component (D) of the present invention include organic polysilazane compounds such as KiON HTA1500 rapid cure, KiON HTA1500 slow cure, KiON HTT1800 slow cure, tutoProm (registered trademark) matt HD, tutoProm (registered trademark) bright G , CAG 37 (manufactured by AZ Material Co., Ltd.) and the like can be used.
- organic polysilazane compounds include AQUAMICA (registered trademark) NP110-20 and AQUAMICA (registered trademark) NP140-2 (manufactured by AZ Material Co., Ltd.).
- polysiloxazan compounds are obtained by the production methods disclosed in JP-A-62-195024, JP-A-2004-532318, JP-A-2020-122033, JP-A-2021-055052, etc. be able to.
- the addition amount of the component (D) in the curable composition according to the present invention is not particularly limited, but for example, the total 100 parts by mass of the components (A) to (C) It is preferably 0.5 to 10 parts by mass, more preferably 1.0 to 8 parts by mass, and particularly preferably 1.5 to 5 parts by mass. Within the above range, it is possible to obtain a curable composition which is even more excellent in drying property, recovery workability after a certain period of time has elapsed, and water repellency of the film.
- the (E) component contained in the curable composition of the present invention is a catalyst.
- the Si—N bond which is a hydrolyzable functional group contained in the component (D)
- a coating is formed.
- component (E) examples include organic tin compounds, organic titanium compounds, organic aluminum compounds, organic zinc compounds, organic zirconium compounds, inorganic acid compounds, organic acid compounds, inorganic base compounds, organic base compounds, and the like.
- the component (E) is an organic titanium compound because it is compatible with the above component (D) and provides a curable composition that is excellent in drying properties, recovery workability after a certain period of time, and water repellency of the film.
- organic tin compounds include dibutyltin dilaurate, dibutyltin dioctate, dibutyltin diacetate, dioctyltin dilaurate, dioctyltin dioctate, dioctyltin diacetate, dibutyltin bisacetylacetate, dioctyltin bisacetyllaurate, and the like. can.
- organic titanium compound examples include titanium chelate compounds such as titanium acetylacetonate, titanium-1,3-propanedioxybis(ethylacetoacetate), and titanium ethylacetoacetate; tertiary amyl titanate, tetra-tert-butyl titanate, Titanium alkoxide compounds such as tetrastearyl titanate, tetraoctyl titanate, tetra-n-butyl titanate, and tetraisopropyl titanate can be mentioned.
- titanium chelate compounds such as titanium acetylacetonate, titanium-1,3-propanedioxybis(ethylacetoacetate), and titanium ethylacetoacetate
- tertiary amyl titanate tetra-tert-butyl titanate
- Titanium alkoxide compounds such as tetrastearyl titanate, tetraoctyl titanate, tetra-n-
- organic aluminum compounds include aluminum methoxybis(ethylacetoacetate), aluminum methoxybis(acetylacetonate), aluminum ethoxybis(ethylacetoacetate), aluminum ethoxybis(acetylacetonate), aluminum isopropoxybis(ethyl acetoacetate), aluminum isopropoxybis(methylacetoacetate), aluminum isopropoxybis(tert-butylacetoacetate), aluminum butoxybis(ethylacetoacetate), aluminum dimethoxy(ethylacetoacetate), aluminum dimethoxy(acetylacetonate) , aluminum diethoxy (ethylacetoacetate), aluminum diethoxy (acetylacetonate), aluminum diisopropoxy (ethylacetoacetate), aluminum diisopropoxy (methylacetoacetate), aluminum tris (ethylacetoacetate), aluminum tris ( acetylacetonate); aluminum alkoxide compounds such as aluminum trimethoxide, aluminum triethoxide, aluminum
- organic zinc compounds include zinc octoate, zinc 2-ethylhexanoate, zinc triacetylacetonate, zinc-2-ethylhexoate, zinc naphthenate, zinc stearate and the like.
- organic zirconium compounds include zirconium tetraacetylacetonate, zirconium tributoxyacetylacetonate, zirconium dibutoxydiacetylacetonate, zirconium tetra-normal propoxide, zirconium tetraisopropoxide, zirconium tetra-normal butoxide, zirconium acylate, and zirconium. Tributoxy stearate, zirconium octoate, zirconyl (2-ethylhexanoate), zirconium (2-ethylhexoate) and the like can be exemplified.
- inorganic acid compounds include hydrochloric acid, phosphoric acid, sulfuric acid, and hydrofluoric acid.
- organic acid compounds include p-toluenesulfonic acid, oxalic acid, citric acid, and acetic acid.
- ammonia, sodium hydroxide, magnesium hydroxide, etc. can be illustrated as an inorganic base compound.
- organic base compounds include trimethylamine, triethylamine, tributylamine, 1,5-diazabicyclo[4.3.0]nonene-5 (DBN), 1,8-diazabicyclo[5.4.0]undecene-7 ( DBU) and the like.
- the above catalysts may be used singly or in combination of multiple types.
- content of (E)component points out a total amount.
- organotitanium compounds examples include Orgatics (registered trademark) TA-8, TA-21, TA-23, TA-30, TC-100, TC-401, TC-710 (manufactured by Matsumoto Fine Chemical Co., Ltd. ), D-20, D-25, DX-175 (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like.
- organoaluminum compounds include DX-9740 and CAT-AC (manufactured by Shin-Etsu Chemical Co., Ltd.).
- commercially available inorganic acid compounds include, for example, D-220 and X-40-2309A (manufactured by Shin-Etsu Chemical Co., Ltd.).
- the amount of component (E) added is not particularly limited, but for example, 0.01 to 50 parts by mass of component (E) per 100 parts by mass of component (D). It is preferably 0.03 to 30 parts by mass, particularly preferably 0.5 to 10 parts by mass, and most preferably 1 to 8 parts by mass. Within the above range, it is possible to obtain a curable composition that is even more excellent in drying property, recovery workability after a certain period of time has elapsed, and water repellency of the film.
- the curable composition according to the present invention may appropriately contain any additive component within a range that does not impair its properties.
- any additive component within a range that does not impair its properties.
- Method for forming a cured film (method for forming a film of a curable composition) according to the present invention is not particularly limited, and includes, for example, the following methods.
- a brush, sponge, nonwoven fabric, microfiber cloth, or the like is impregnated with an appropriate amount of the curable composition according to the present invention, and is spread over the substrate surface by hand (coating step).
- the non-woven fabric means a cloth in which fibers are intertwined without being woven
- the microfiber cloth means a cloth woven with ultrafine chemical fibers.
- reaction step provides a method for forming a cured film, comprising applying the above curable composition to a substrate surface and curing the composition on the substrate surface.
- the curable composition according to the present invention is impregnated with an appropriate amount of a brush, sponge, nonwoven fabric, or fiber (microfiber cloth, etc.), and after spreading it on the substrate surface by hand (after the coating process), it naturally It is preferable to volatilize the components (A) to (C) by drying using a dryer or the like (drying step). That is, the method for forming a cured coating according to another embodiment of the present invention, after applying the curable composition to the substrate surface, contained in the curable composition on the substrate surface (A) ⁇ It is preferable to further include drying (volatilizing) the component (C).
- the drying conditions are not particularly limited, but include 5 to 50°C and 5 to 60 minutes.
- the curable composition of the present invention has the advantage that construction work can be performed in a wide drying temperature range as described above.
- the method for forming a cured film according to another aspect of the present invention further includes wiping off (wiping off) the excess curable composition (finishing step) after the coating step or the drying step.
- the method for forming a cured film according to the present invention has the advantage that it is easy to adjust the thickness of the curable composition and remove unevenness in such a finishing process. That is, it is excellent in recovery workability.
- the finishing process can be done with dry wipes, microfiber cloths, and the like.
- a cured film obtained by curing the curable composition obtained by curing the curable composition.
- a cured film formed using the curable composition has excellent water repellency.
- the thickness of the coating (cured coating) of the curable composition of the present invention is not particularly limited. 0.5 to 100 ⁇ m. By setting the thickness of the film of the curable composition within the above range, good water repellency can be maintained. Therefore, in the coating step of the method for forming a cured film according to the present invention, it is preferable that the thickness of the coating film is appropriately adjusted so that the thickness of the coating film when dried is within the above range.
- the base materials include metals, glass, ceramics, plastics, fibers, etc. Among them, metals, glass, plastics, etc. are preferable.
- Specific examples of the metal include rod-shaped, spherical, and plate-shaped metal members. Further, the metal may be specifically a steel plate (unpainted metal steel plate) or an exterior steel plate (painted steel plate).
- the curable composition of the present invention is suitably used to form a coating on the surface of substrates selected from the group consisting of metals, glasses, ceramics, plastics, fibers, steel plates, and exterior steel plates. More preferably, the curable composition of the present invention is used to form a coating on the surface of a substrate selected from the group consisting of plastic, steel plate, and armored steel plate.
- plastic examples include (meth)acrylic resin, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polyphenylene sulfide, polyethylene naphthalate, acrylonitrile-butadiene-styrene resin, styrene-methacrylic resin, polystyrene, polyethylene, polypropylene, polyvinyl chloride, and polyester. , polyurethane, and the like.
- (meth)acryl includes both acryl and methacryl.
- the curable composition of the present invention includes steel plate (unpainted metal steel plate), painted steel plate, (meth)acrylic resin, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polyphenylene sulfide, polyethylene, polypropylene, styrene- It is preferable from the viewpoint that a cured film having excellent adhesion to methacrylic resin or the like can be formed.
- Main uses of the curable composition according to the present invention include, for example, use as an antifouling coating agent.
- an antifouling coating agent Specifically, automobiles, motorcycles, bicycles, construction machinery, agricultural machinery, aircraft, railroad vehicles, ships, building roofs and exterior walls, window glass, bridge girders, road traffic signs, traffic lights, billboards, and vending machines.
- antifouling coating agents for equipment installed outdoors for a long period of time such as air conditioners and solar panels; Among them, it is suitably used as an antifouling coating agent for automobiles, two-wheeled vehicles, bicycles, construction machinery, agricultural machinery, aircraft, railroad vehicles, ships, buildings, vending machines, and solar panels, especially for bicycles. agents are preferred.
- Antifouling coating agents for automobiles are used, for example, as antifouling coating agents for vehicles, headlamps, aluminum wheels, seats, interior parts, and the like.
- an article on which a cured film obtained by curing the curable composition is formed Such articles include, for example, automobiles, motorcycles, bicycles, railroad vehicles, solar panels, vending machines, buildings, and the like. That is, another aspect of the present invention also provides an article having the above cured coating, wherein the article is selected from the group consisting of automobiles, motorcycles, bicycles, railway vehicles, solar panels, vending machines and buildings. be.
- c1 Isoparaffin-based solvent containing isohexadecane having an initial boiling point of 213° C.
- IP Solvent 2028 manufactured by Idemitsu Kosan Co., Ltd.
- c'1 Isoparaffin-based solvent with an initial boiling point of 185 ° C.
- c'2 Isoparaffin-based solvent with an initial boiling point of 270 ° C.
- d1 Organic polysilazane compound (KiON HTA1500 rapid cure manufactured by AZ Material Co., Ltd.), which is 100% active ingredient
- d2 Organic polysilazane compound (KiON HTA1500 slow cure manufactured by AZ Material Co., Ltd.), which is 100% active ingredient
- e1 Organic titanium compound (titanium alkoxide compound; D-25 manufactured by Shin-Etsu Chemical Co., Ltd.).
- the water repellency is preferably ⁇ .
- Examples 1 to 8 in Table 1 are curable compositions that are excellent in drying property, recovery workability after a certain period of time, and water repellency of the film.
- Comparative Example 1 in Table 1 is a curable composition that does not contain the (B) component and the (C) component, the result was that the drying property and recovery workability after a certain period of time were inferior.
- Comparative Example 2 although the curable composition did not contain the component (C), the recovery workability after a certain period of time was inferior.
- Comparative Example 3 is a curable composition that does not contain the component (B), the result was poor recovery workability after a lapse of a certain period of time.
- Comparative Example 4 which is a curable composition containing no component (A), was inferior in water repellency.
- Comparative Example 5 is a curable composition containing an excess amount of component (C) from the range of the present invention (((A) component + (B) component + (C) component) in 26.7% by mass)
- Comparative Example 6 is a curable composition containing c'1 component (organic solvent having a lower initial boiling point than component (C)) instead of component (C), but recovery after a certain period of time The result was poor workability.
- Comparative Example 7 is a curable composition containing c'2 component (organic solvent having a higher initial boiling point than component (C)) instead of component (C), but the drying property and water repellency are poor. The result was inferior.
- Comparative Example 8 is a curable composition containing a'1 component (an organic solvent having a lower initial boiling point than the (A) component) instead of the (A) component. The result was poor workability.
- a curable composition that is excellent in drying properties, recovery workability after a certain period of time, and water repellency of the film is provided.
- the curable composition is industrially useful because it can be used as a coating agent for automobiles and the like.
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Abstract
Description
(A)成分、(B)成分および(C)成分の合計100質量%に対し、前記(A)成分を12~85質量%、前記(B)成分を12~85質量%、前記(C)成分を0.5~20質量%含む、硬化性組成物:
(A)初留点が85℃以上145℃未満である有機溶剤
(B)初留点が145℃以上190℃未満である有機溶剤
(C)初留点が190℃以上250℃未満である有機溶剤
(D)ポリシラザン化合物
(E)触媒。
自動車、二輪自動車、自転車、鉄道車両、ソーラーパネル、自動販売機および建築物からなる群から選択される、物品。
本発明の一態様に係る硬化性組成物(以下、単に「硬化性組成物」とも称する)は、下記の(A)~(E)成分を含み、(A)成分、(B)成分および(C)成分の合計100質量%に対し、前記(A)成分を12~85質量%、前記(B)成分を12~85質量%、前記(C)成分を0.5~20質量%含む(ただし、前記(A)成分、前記(B)成分および前記(C)成分の合計は100質量%である):
(A)初留点が85℃以上145℃未満である有機溶剤
(B)初留点が145℃以上190℃未満である有機溶剤
(C)初留点が190℃以上250℃未満である有機溶剤
(D)ポリシラザン化合物
(E)触媒。
本発明の硬化性組成物に含まれる(A)成分は、初留点が85℃以上145℃未満である有機溶剤である。本明細書中、「有機溶剤」とは、硬化性組成物に含まれる(D)成分および(E)成分を溶解または均一に分散させることができるような液状の有機化合物を意図する。なお、本明細書において「液状」とは、25℃にて流動性を有するものを指す。より具体的には、「液状」とは、25℃、大気圧下において、B型粘度計で測定される粘度が1,000Pa・s以下のものを指す。作業性を良好にする観点から、有機溶剤の上記粘度は、100Pa・s以下であると好ましく、1,000mPa・s以下(1Pa・s以下)であるとより好ましく、150mPa・s以下であると特に好ましい。一方、その下限値は、特に制限されないが、例えば0.1mPa・s以上である。
本発明の硬化性組成物に含まれる(B)成分は、初留点が145℃以上190℃未満である有機溶剤である。また、硬化性組成物中における(B)成分の含有量は、(A)~(C)成分の合計質量を100質量%としたとき、12~85質量%である。(B)成分の含有量を上記のような所定範囲内とし、本発明のその他成分(特に、(A)成分および(C)成分)と組み合わせることで、一定時間経過後のリカバリー作業性に優れた硬化性組成物を得ることができる。硬化性組成物が(B)成分を含まない場合、リカバリー作業性が低下する(後述の比較例1、3)。
本発明の硬化性組成物に含まれる(C)成分は、初留点が190℃以上250℃未満である有機溶剤である。また、硬化性組成物中における(C)成分の含有量は、(A)~(C)成分の合計質量を100質量%としたとき、0.5~20質量%である。(C)成分の含有量を上記のような、所定範囲内とし、本発明のその他成分(特に、(A)成分および(B)成分)と組み合わせることで、乾燥性、一定時間経過後のリカバリー作業性に優れた硬化性組成物を得ることができる。(C)成分の含有量が上記所定範囲を超える場合や、(C)成分の代わりに初留点が250℃以上の有機溶剤を含む場合、硬化性組成物の乾燥性が低下する。(後述の比較例5、7)。また、(C)成分を含まない(初留点が190℃以上の有機溶剤を含まない)場合、リカバリー作業性が低下する(後述の比較例2、6)。
本発明の硬化性組成物に含まれる(D)成分は、ポリシラザン化合物である。(D)成分を本発明のその他成分と組み合わせることで、乾燥性、一定時間経過後のリカバリー作業性、被膜の撥水性に優れる硬化性組成物が得られる。(D)成分は、Si-N結合を複数有する化合物であれば特に限定されない。かようなポリシラザン化合物は、空気中に存在する水分により加水分解反応し、分子内の窒素が脱離してアンモニアが生成され、これが触媒となって更に反応が促進されることで三次元的にSi-O結合を形成していくことが一般に知られている。
本発明の硬化性組成物に含まれる(E)成分は、触媒である。硬化性組成物が(E)成分を含むことにより、上記(D)成分に含まれる加水分解性官能基であるSi-N結合と空気中の水分などが反応して縮合反応が促進され、硬化被膜が形成される。
本発明に係る硬化性組成物は、その特性を毀損しない範囲で適宜に任意の添加成分を含んでいてもよい。たとえば、シリコーン化合物、シラン化合物、充填剤、老化防止剤、防錆剤、防カビ剤、着色剤、界面活性剤、レオロジー調整剤、紫外線吸収剤、蛍光剤、研磨剤、香料、充填剤等の成分を選択することができる。
本発明に係る硬化被膜の形成方法(硬化性組成物の被膜形成方法)としては、特に制限されないが、例えば以下の方法が挙げられる。
本発明に係る硬化性組成物の主な用途としては、例えば、防汚コーティング剤としての用途が挙げられる。具体的には、自動車、二輪自動車、自転車、建機、農機、航空機、鉄道車両、船舶、建築物の屋根や外壁、窓ガラス、橋桁等の建築物、道路交通標識、信号機、看板、自動販売機、ソーラーパネル等の長期間屋外に設置されるものの防汚コーティング剤;機器・部品外装などの防汚コーティング剤などが挙げられる。なかでも、自動車、二輪自動車、自転車、建機、農機、航空機、鉄道車両、船舶、建築物、自動販売機、ソーラーパネル用途の防汚コーティング剤として好適に用いられ、特に自転車用途の防汚コーティング剤が好ましい。自動車向け防汚コーティング剤としては、例えば、車両、ヘッドランプ、アルミホイール、シート、内装部品などの防汚コーティング剤に用いられる。
さらに、本発明の他の態様によれば、前記硬化性組成物を硬化して得られる硬化被膜が形成された物品もまた提供される。かような物品としては、例えば、自動車、二輪自動車、自転車、鉄道車両、ソーラーパネル、自動販売機、建築物などが挙げられる。すなわち、本発明の他の態様は、上記硬化被膜を有する物品もまた提供し、前記物品は、自動車、二輪自動車、自転車、鉄道車両、ソーラーパネル、自動販売機および建築物からなる群から選択される。
各成分を表1に示す組成(単位:質量部)となるように秤量し、常温にてミキサーで60分間混合し、硬化性組成物を得た。なお、各成分の詳細な添加量(含有量)は表1に記載のとおりであり、表1中の数値の単位は特に記載のない限り、「質量部」である。「((A)成分+(B)成分)/(C)成分」の項目は、(C)成分1質量部に対する(A)成分と(B)成分との合計量(単位:質量部)を表す。なお、表1中の空欄および「0」の記載は、該当成分が含まれないことを示す。
a1:初留点131℃である、イソノナンを含むイソパラフィン系溶剤(KHネオケム株式会社製キョーワゾール(登録商標)C-900)
a’1:初留点61℃である、イソヘキサンを含むイソパラフィン系溶剤(丸善石油化学株式会社製イソヘキサン)
<(B)成分>
b1:初留点178℃である、イソドデカン(2,2,4,6,6-ペンタメチルヘプタン)を含むイソパラフィン系溶剤(丸善石油化学株式会社製マルカゾールR)
<(C)成分および比較成分>
c1:初留点213℃である、イソヘキサデカンを含むイソパラフィン系溶剤(出光興産株式会社製IPソルベント2028)
c’1:初留点185℃であるイソパラフィン系溶剤(株式会社スタンダード石油大阪発売所製アイソパー(登録商標)L)
c’2:初留点270℃であるイソパラフィン系溶剤(株式会社スタンダード石油大阪発売所製アイソパー(登録商標)V)
<(D)成分>
d1:有効成分100%である、有機ポリシラザン化合物(AZマテリアル株式会社製KiON HTA1500 rapid cure)
d2:有効成分100%である、有機ポリシラザン化合物(AZマテリアル株式会社製KiON HTA1500 slow cure)
<(E)成分>
e1:有機チタン系化合物(チタンアルコキシド化合物;信越化学工業株式会社製D-25)。
以下条件にて試験し、評価を行った。
各硬化性組成物約2mLを不織布に染み込ませた。黒色塗装板(材質:SPCC-SD、寸法:0.8mm×70mm×150mm、アサヒビーテクノ株式会社製)の黒色塗装面の全面に、上記不織布を用いて、硬化性組成物を手で薄く塗布して試験片を作製した。前記試験片の被塗布面の任意の箇所を、JIS K 5600-3-3:1999指触乾燥試験に準じた方法にて乾燥時間を測定した。測定は、硬化性組成物を塗布した後、25℃、無風状態で15秒ごとに5分間経過するまで測定し、それ以降は5分ごとに90分間経過するまで測定した。乾燥性を以下の基準に基づき評価した。乾燥の有無は、タックの有無を指触で確認した。結果を表1に示す。本発明において、×は乾燥時間が長いか、または短すぎ、施工性(作業性)が悪いため好ましくなく、○は施工時の可使時間と乾燥性との兼ね合いから好ましい。
○:指触乾燥時間が5分以上60分以下のもの
×:指触乾燥時間が5分未満、または、60分を超えるもの。
各硬化性組成物を、不織布に十分染み込ませ、黒色塗装板(材質:SPCC-SD、寸法:0.8mm×70mm×150mm、アサヒビーテクノ株式会社製)の表面に手で薄く塗り拡げた。次に、25℃、無風状態で30分間経過後、乾いたマイクロファイバークロスで硬化性組成物を拭き上げて、30分経過後のリカバリー作業性について以下の基準に基づき評価した。結果を表1に示す。なお、ムラは目視で確認した。本発明において、一定時間経過後の施工リカバリー作業性は○または◎であることが好ましい。
◎:ムラがなく拭き上げることが可能であり、且つ、拭き上げ時に滑りがよく作業性が良好であった
○:ムラがなく拭き上げることが可能だったものの、拭き上げ時に滑りが悪く引っかかり作業性がやや劣った
×:ムラが残ってしまった。あるいは、拭き上げ時に滑りが悪く引っかかり作業性が極めて劣った。
各硬化性組成物を、不織布に十分染み込ませ、黒色塗装板(材質:SPCC-SD、寸法:0.8mm×70mm×150mm、アサヒビーテクノ株式会社製)の表面に手で薄く塗り拡げた。10分後に、乾いたマイクロファイバークロスで余剰分の拭き取りを行い、これを25℃・55%RH環境下で168時間静置して養生することで試験片を作製した。次に、前記試験片のそれぞれの表面に、イオン交換水をスポイトで1滴(0.005ml)滴下して、そのときの基材表面に対する水の接触角を、接触角計(DM-500、協和界面科学株式会社製)を用いて測定し、水接触角を評価した。結果を表1に示す。本発明において撥水性は、○であるものが好ましい。
○:水接触角は100度以上
×:水接触角は100度未満。
Claims (9)
- 下記の(A)~(E)成分を含み、
(A)成分、(B)成分および(C)成分の合計100質量%に対し、前記(A)成分を12~85質量%、前記(B)成分を12~85質量%、前記(C)成分を0.5~20質量%含む、硬化性組成物。
(A)初留点が85℃以上145℃未満である有機溶剤
(B)初留点が145℃以上190℃未満である有機溶剤
(C)初留点が190℃以上250℃未満である有機溶剤
(D)ポリシラザン化合物
(E)触媒 - 前記(D)成分が、有機ポリシラザン化合物またはポリシロキサザン化合物である、請求項1に記載の硬化性組成物。
- 前記(E)成分が、有機チタン化合物、有機アルミニウム化合物、無機酸化合物および有機塩基化合物からなる群から選択される少なくとも一種を含む、請求項1に記載の硬化性組成物。
- 前記(A)~(C)成分の合計量が、前記(D)成分10質量部に対して、10~800質量部である、請求項1に記載の硬化性組成物。
- 前記(C)成分が、炭素数14~18のイソパラフィンおよび炭素数13~17のノルマルパラフィンからなる群から選択される少なくとも一種を含む、請求項1に記載の硬化性組成物。
- 金属、ガラス、セラミックス、プラスチック、繊維、鋼板、および外装鋼板からなる群から選択される基材の表面上の被膜形成に用いられる、請求項1に記載の硬化性組成物。
- 防汚コーティング剤として用いられる、請求項1に記載の硬化性組成物。
- 請求項1に記載の硬化性組成物を硬化させてなる、硬化被膜。
- 請求項8に記載の硬化被膜が形成された物品であって、
自動車、二輪自動車、自転車、鉄道車両、ソーラーパネル、自動販売機および建築物からなる群から選択される、物品。
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