WO2009119389A1 - カルボジイミド化合物、カルボジイミド組成物及び水性塗料組成物 - Google Patents
カルボジイミド化合物、カルボジイミド組成物及び水性塗料組成物 Download PDFInfo
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- WO2009119389A1 WO2009119389A1 PCT/JP2009/055189 JP2009055189W WO2009119389A1 WO 2009119389 A1 WO2009119389 A1 WO 2009119389A1 JP 2009055189 W JP2009055189 W JP 2009055189W WO 2009119389 A1 WO2009119389 A1 WO 2009119389A1
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/02—Polymeric products of isocyanates or isothiocyanates of isocyanates or isothiocyanates only
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
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- C08G18/166—Catalysts not provided for in the groups C08G18/18 - C08G18/26
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/283—Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
- C08G18/2835—Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds having less than 5 ether groups
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- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/284—Compounds containing ester groups, e.g. oxyalkylated monocarboxylic acids
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C09D201/00—Coating compositions based on unspecified macromolecular compounds
- C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C09D201/06—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
- C09D201/08—Carboxyl groups
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
Definitions
- the present invention relates to a carbodiimide compound, a carbodiimide composition, and an aqueous coating composition, and more particularly to a carbodiimide compound and a carbodiimide composition that improve water resistance, solvent resistance, and adhesion, and an aqueous coating composition containing them.
- Water-soluble resins that are water-soluble or water-dispersible are used in many fields such as paints, inks, fiber treatment agents, adhesives, and coating agents.
- This water-soluble or water-dispersible water-based paint uses an aqueous medium, so there is no concern about environmental pollution or fire.
- cleaning of painting equipment such as brushes, rollers, and spray guns, and cleaning up after paint contamination Since it can be easily done with water, in particular, its demand has increased in recent years.
- a carboxyl group is introduced into the aqueous resin in order to impart water solubility or water dispersibility to the resin itself. For this reason, the carboxyl group remaining in the coating film may induce hydrolysis, thereby impairing the strength, durability, and aesthetics of the coating film.
- an aqueous melamine resin As means for improving various physical properties such as strength, water resistance and durability of the coating film of such an aqueous resin, an aqueous melamine resin, an aziridine compound, an aqueous dispersion capable of forming a crosslinked structure by reacting with the above-described carboxyl group and the like
- an external crosslinking agent such as a type isocyanate compound is used in combination
- these cross-linking agents may be difficult to use due to problems such as toxicity and reactivity. That is, since the crosslinking reaction with the crosslinking agent proceeds while crushing the carboxyl group, the reduction of the carboxyl group can improve the strength, water resistance, durability, etc. of the coating film, but it has not been reacted.
- the coating film may be toxic.
- the cross-linking agent remains, the coating film may be toxic.
- unreacted carboxyl groups remain in the coating film, the water resistance and durability of the coating film are reduced.
- various problems arise when the crosslinking agent and the carboxyl group in the aqueous resin do not react 100%.
- Patent Document 1 discloses aqueous dicyclohexylmethane carbodiimide that has good reactivity and storage stability and is easy to handle as a crosslinking agent for aqueous resins.
- This aqueous dicyclohexylmethane carbodiimide has the characteristics of being non-toxic and having a sufficient pot life.
- the present inventors have found that the above-mentioned aqueous dicyclohexylmethane carbodiimide may not be able to obtain sufficient water resistance and solvent resistance depending on the resin, and increases the crosslinking density for the purpose of improving water resistance and solvent resistance. And discovered that the pot life is shortened. Accordingly, the present invention provides a carbodiimide compound, a carbodiimide composition, and an aqueous solution that can improve water resistance, solvent resistance, and adhesion, while having a pot life equivalent to that of a conventional one when added as a crosslinking agent to an aqueous resin. An object is to provide a coating composition.
- the present inventors have made methyl glycolate / methyl lactate close to the structure possessed by aqueous urethane resins and aqueous acrylic resins when making carbodiimide compounds aqueous.
- the present invention has been completed by finding that a water-soluble or water-dispersible carbodiimide compound having an introduced at the terminal can solve the above-mentioned problems.
- a carbodiimide compound represented by the following general formula (1) (Wherein R 1 is a group represented by the following general formula (a), R 2 is a group represented by the following general formula (a) or (b), and n is 1 to 15 Represents an integer, and L 1 represents a divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms, and a divalent aromatic group having 6 to 14 carbon atoms.
- a hydrocarbon group or a divalent heterocyclic group having 3 to 12 carbon atoms, and a plurality of L 1 may be the same or different.
- R 3 represents an alkyl group having 1 to 3 carbon atoms
- R 4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- R 5 is an alkyl group having 1 to 4 carbon atoms
- R 6 is a hydrogen atom or a methyl group
- m is an integer of 4 to 30.
- X is a group represented by the following general formula (a)
- a plurality of X may be the same or different
- Y is a group represented by the following general formula (b).
- a plurality of Y may be the same or different; n represents an integer of 1 to 15; L 2 represents a divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms; A divalent alicyclic hydrocarbon group having ⁇ 13, a divalent aromatic hydrocarbon group having 6 to 14 carbon atoms, or a divalent heterocyclic group having 3 to 12 carbon atoms, and a plurality of L 2 are the same Or different.)
- R 3 represents an alkyl group having 1 to 3 carbon atoms, and R 4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- An aqueous coating composition containing the carbodiimide composition according to 5 above and a
- the water-based coating composition containing the carbodiimide compound and the carbodiimide composition of the present invention has excellent water resistance, solvent resistance and adhesion as well as excellent appearance while having a pot life comparable to that of the conventional one.
- the carbodiimide compound according to the present invention is a carbodiimide compound having a specific hydrophilic segment at the terminal, is water-soluble or water-dispersible, and can be suitably used particularly as a crosslinking agent for an aqueous resin.
- the carbodiimide compound of the present invention is represented by the following general formula (1).
- R 1 is a group represented by the following general formula (a)
- R 2 is a group represented by the following general formula (a) or (b)
- n is 1 to 15 Represents an integer
- L 1 represents a divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms, and a divalent aromatic group having 6 to 14 carbon atoms.
- a hydrocarbon group or a divalent heterocyclic group having 3 to 12 carbon atoms, and a plurality of L 1 may be the same or different.
- R 3 represents an alkyl group having 1 to 3 carbon atoms
- R 4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- the carbodiimide compound of the present invention is represented by the following general formula (1-a), it can improve the water resistance, solvent resistance and adhesion of the resin composition when used as a crosslinking agent. it can.
- a compound represented by the following general formula (1-b) is preferable because it becomes a carbodiimide compound that is highly water-soluble and easily compatible with a completely aqueous medium.
- X is a group represented by the above general formula (a), a plurality of X may be the same or different, n represents an integer of 1 to 15, and L 2 represents A divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms, a divalent aromatic hydrocarbon group having 6 to 14 carbon atoms, or 3 carbon atoms -12 divalent heterocyclic groups, and a plurality of L 2 may be the same or different.
- X is a group represented by the above general formula (a)
- Y is a group represented by the above general formula (b)
- n represents an integer of 1 to 15
- L 2 Is a divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms, a divalent aromatic hydrocarbon group having 6 to 14 carbon atoms, or carbon (It is a divalent heterocyclic group of formula 3 to 12, and a plurality of L 2 may be the same or different.
- the carbodiimide composition of the present invention includes a carbodiimide compound represented by the following general formula (1-a), a carbodiimide compound represented by the following general formula (1-b), and a carbodiimide compound represented by the following general formula (2). Containing.
- X is a group represented by the above general formula (a)
- Y is a group represented by the above general formula (b)
- n represents an integer of 1 to 15
- L 2 Is a divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms, a divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms, a divalent aromatic hydrocarbon group having 6 to 14 carbon atoms, or carbon (It is a divalent heterocyclic group of formula 3 to 12, and a plurality of L 2 may be the same or different.
- n is an integer of 2 to 15, preferably an integer of 2 to 10.
- the polycarbodiimide compound is soluble in an aqueous solvent or has good dispersibility.
- the divalent aliphatic hydrocarbon group, divalent alicyclic hydrocarbon group, divalent aromatic hydrocarbon group and divalent heterocyclic group represented by L 1 and L 2 have a substituent.
- the substituent is preferably an alkyl group, alkenyl group, alkynyl group, aryl group, amino group, alkoxy group, aryloxy group, acyl group, alkoxycarbonyl group, aryloxycarbonyl group, acyloxy group, acylamino group, Alkoxycarbonylamino group, aryloxycarbonylamino group, sulfonylamino group, sulfamoyl group, carbamoyl group, alkylthio group, arylthio group, sulfonyl group, halogen atom, cyano group, aromatic heterocyclic group, more preferably alkyl group, An aryl group, an alkoxy group, an aryloxy group, a halogen atom, a cyano group, and Mashiku an alkyl group, an aryl group, an alkoxy group, an aryloxy group, particularly preferably an alkyl group, an aryloxy group
- divalent aliphatic hydrocarbon group having 1 to 18 carbon atoms in the general formulas (1), (1-a), (1-b) and (2) include a methyl group and an ethyl group.
- divalent alicyclic hydrocarbon group having 3 to 13 carbon atoms in the general formulas (1), (1-a), (1-b) and (2) include a cyclopropyl group
- examples include divalent groups such as cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, cyclononyl group, bicycloheptyl group, bicyclooctyl group, tricycloheptyl group, adamantyl group, and the divalent group of dicyclohexylmethane.
- a divalent group of cyclopentyl group, cyclohexyl group, cycloheptyl group, bicycloheptyl group, bicyclooctyl group or adamantyl group or a divalent group of dicyclohexylmethane is preferable.
- Specific examples of the divalent aromatic hydrocarbon group having 6 to 14 carbon atoms in the general formulas (1), (1-a), (1-b) and (2) include a phenylene group and a naphthylene group.
- Biphenylene group, anthranylene group, peryleneylene group, pyrenylene group and the like, and phenylene group, naphthylene group and biphenylene group are preferable.
- divalent heterocyclic group having 3 to 12 carbon atoms in the general formulas (1), (1-a), (1-b) and (2) include imidazole, benzimidazole, pyrrole, Examples include furan, thiophene, benzothiophene, oxadiazoline, indoline, carbazole, pyridine, quinoline, isoquinoline, benzoquinone, pyrarodine, imidazolidine, and piperidine.
- alkyl group having 1 to 3 carbon atoms in the general formula (a) include a methyl group, an ethyl group, a propyl group, and an isopropyl group.
- alkyl group having 1 to 4 carbon atoms in the general formula (b) include a methyl group, an ethyl group, a propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, and a tert-butyl group. .
- the carbodiimide compound of the present invention has, for example, the following general formula, which has a functional group having reactivity with an isocyanate group, after synthesizing an isocyanate-terminated polycarbodiimide compound by a condensation reaction involving decarbonization of an organic diisocyanate compound. It can be obtained by reacting the hydrophilic organic compound A represented by (A).
- the isocyanate-terminated polycarbodiimide compound is reacted with a mixture of the hydrophilic organic compound A represented by the following general formula (A) and the hydrophilic organic compound B represented by the following general formula (B),
- the carbodiimide composition of the present invention containing a carbodiimide compound can be obtained by sealing the terminal isocyanate with a hydrophilic segment.
- R 3 represents an alkyl group having 1 to 3 carbon atoms
- R 4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
- R 5 —O— (CH 2 —CHR 6 —O) m —H
- B (Wherein R 5 is an alkyl group having 1 to 4 carbon atoms, R 6 is a hydrogen atom or a methyl group, and m is an integer of 4 to 30.)
- alkyl group having 1 to 3 carbon atoms in the general formula (A) include a methyl group, an ethyl group, a propyl group, and an isopropyl group.
- alkyl group having 1 to 4 carbon atoms in the general formula (B) include methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, and t-butyl group. Is mentioned.
- the hydrophilic organic compound A represented by the general formula (A) and the hydrophilic organic compound B represented by the general formula (B) one kind of compound may be used alone. A plurality of compounds may be used in combination.
- methyl glycolate and methyl lactate are preferable
- hydrophilic organic compound B represented by the general formula (B) polyethylene glycol monomethyl ether is used. preferable.
- organic diisocyanate compound used as a raw material for the isocyanate-terminated carbodiimide compound examples include aromatic diisocyanate compounds, aliphatic diisocyanate compounds, alicyclic diisocyanate compounds, heterocyclic diisocyanate compounds, and mixtures thereof.
- the condensation reaction involving decarbonization of the organic diisocyanate compound proceeds in the presence of a carbodiimidization catalyst.
- the catalyst include 1-phenyl-2-phospholene-1-oxide, 3-methyl-2-phospholene-1-oxide, 1-ethyl-2-phospholene-1-oxide, and 3-methyl-1-phenyl.
- -2-phospholene-1-oxide and phospholene oxides such as these 3-phospholene isomers can be used.
- 3-methyl-1-phenyl-2-phospholene-1 -Oxides are preferred.
- the amount of the catalyst used can be a catalyst amount.
- the reaction temperature in the condensation reaction of the organic diisocyanate compound is usually about 80 to 200 ° C. Further, the reaction temperature when adding the hydrophilic segment by reacting the isocyanate-terminated carbodiimide compound with the hydrophilic organic compound A or reacting the mixture of the hydrophilic organic compound A and the hydrophilic organic compound B is as follows: Usually, it is 60 to 180 ° C, preferably 100 to 160 ° C.
- the crosslinking agent is preferably an aliphatic carbodiimide compound, more preferably dicyclohexylmethane carbodiimide and tetramethylxylylene carbodiimide, from the viewpoint of reactivity and storage stability.
- Dicyclohexylmethanecarbodiimide is particularly preferred.
- This dicyclohexylmethane carbodiimide is obtained by condensing 4,4′-dicyclohexylmethane diisocyanate in the presence of the above-described carbodiimidization catalyst to obtain an isocyanate group-terminated dicyclohexylmethane carbodiimide, which is combined with the above-described hydrophilic organic compound A, or It can be obtained by reacting with a mixture of hydrophilic organic compound A and hydrophilic organic compound B and sealing the terminal isocyanate group with a hydrophilic segment.
- hydrophilic organic compound A represented by the general formula (A) reacts with the isocyanate group of the isocyanate-terminated carbodiimide compound to form a group represented by the general formula (a), and the general formula (B)
- the hydrophilic organic compound B represented reacts with the isocyanate group of the isocyanate-terminated carbodiimide compound to form a group represented by the general formula (b).
- the crosslinkage is such that the molar ratio of the group represented by the general formula (a) to the group represented by the general formula (b) is 1:10 to 30: 1. In terms of the balance between crosslinking performance and solubility in water when used as an agent, the ratio is preferably 1: 1 to 15: 1.
- the present invention also provides an aqueous coating composition containing the carbodiimide compound of the present invention and a crosslinkable aqueous resin, and an aqueous coating composition containing the carbodiimide composition of the present invention and a crosslinkable aqueous resin.
- the mixing ratio of each component is arbitrary, but considering the balance between physical properties and economics of the resulting coating film, the carbodiimide compound or carbodiimide composition is used with respect to 100 parts by mass of the aqueous resin. Is preferably used in a proportion of 0.5 to 15 parts by mass, particularly preferably in a proportion of 1 to 10 parts by mass.
- the resin concentration of the aqueous solution or aqueous dispersion containing the aqueous resin is not particularly limited, but is about 15 to 50% by mass from the viewpoint of the coating property of the resulting aqueous coating composition and the drying property of the coating layer. About 20 to 40% by mass is preferable.
- the aqueous coating composition of the present invention is obtained by dispersing a coating composition in an aqueous medium.
- aqueous medium For example, the mixed solvent of water and water and another solvent can be mentioned.
- the other solvent is not particularly limited as long as it is compatible with water.
- hydrocarbons for example, xylene or toluene
- alcohols for example, methyl alcohol, n-butyl alcohol, isopropyl alcohol
- 2-ethylhexyl alcohol ethylene glycol, propylene glycol, 2- (2-n-butoxyethoxy) ethanol
- ethers eg, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, propylene glycol monoethyl
- 3-methyl-3-methoxybutanol diethylene glycol monoethyl ether, diethylene glycol monobutyl ether
- ketones eg, methyl isobutyl ketone, cyclo Cyclohexanone, isophorone, acetylacetone
- esters e.g., ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate
- esters e.g.,
- aqueous coating composition of the present invention various additive components, for example, a pigment, a filler, a leveling agent, a surfactant, a dispersant, a plasticizer, an ultraviolet absorber, and an antioxidant are used depending on the application. Etc. can be appropriately blended.
- the aqueous coating composition of the present invention contains the carbodiimide compound of the present invention represented by the above general formula (1-a), for example, it is combined with a surfactant, a dispersing agent, etc.
- a carbodiimide compound having a hydrophilic organic compound it can be made water-soluble or water-dispersible.
- a coating layer can be obtained by forming the coating layer by applying the aqueous coating composition of the present invention on a predetermined substrate.
- conventionally known methods can be appropriately used as the coating method, for example, brush coating, tampo coating, spray coating, hot spray coating, airless spray coating, roller coating, curtain flow coating, flow coating, dipping coating, A knife edge coat or the like can be used.
- a curing treatment can be performed to accelerate curing.
- a method is usually used in which a heat treatment is performed to promote the crosslinking reaction of the coating film.
- the method using an electric heating furnace, a hot-air heating furnace, an infrared heating furnace, a high frequency heating furnace etc. is employable.
- IR infrared absorption
- IR infrared absorption
- IR infrared absorption
- IR infrared absorption
- Example 1 (Acrylic resin-containing aqueous coating composition) To 10 g of acrylic resin (Carboset 519 Noveon), 2.6 g of the carbodiimide solution obtained in Synthesis Example 2 was added and stirred well to prepare an aqueous coating composition. The obtained aqueous coating composition was cast on an aluminum plate (200 mm ⁇ 100 mm ⁇ 1 mm) to a thickness of 20 ⁇ m to form a coating film. After casting, curing was performed at 100 ° C. for 10 minutes.
- Example 2 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 except that the carbodiimide solution obtained in Synthesis Example 3 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 3 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 except that the carbodiimide solution obtained in Synthesis Example 4 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 4 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 except that the carbodiimide solution obtained in Synthesis Example 5 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 1 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 except that 3.4 g of the carbodiimide solution obtained in Synthesis Example 6 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 2 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 except that 2.6 g of the carbodiimide solution obtained in Synthesis Example 7 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 3 (Acrylic resin-containing aqueous coating composition) A coating film was formed in the same manner as in Example 1 using only 10 g of an acrylic resin (Carboset 519 Noveon) without adding the carbodiimide solution.
- Example 5 Polyurethane resin-containing aqueous coating composition
- An aqueous coating composition was prepared by adding 2.0 g of the carbodiimide solution obtained in Synthesis Example 2 to 10 g of a polyurethane resin (manufactured by U915 Alberdingk) and stirring well, and a coating film was formed in the same manner as in Example 1. .
- Example 6 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 except that the carbodiimide solution obtained in Synthesis Example 3 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 7 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 except that the carbodiimide solution obtained in Synthesis Example 4 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 8 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 except that the carbodiimide solution obtained in Synthesis Example 5 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 4 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 except that 2.6 g of the carbodiimide solution obtained in Synthesis Example 6 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 5 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 except that 2.0 g of the carbodiimide solution obtained in Synthesis Example 7 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 6 Polyurethane resin-containing aqueous coating composition
- a coating film was formed in the same manner as in Example 5 using only 10 g of a polyurethane resin (manufactured by U915 Alberdingk) without adding the carbodiimide solution.
- the coating film formed as described above was subjected to a rubbing test by the following method.
- the results are shown in Table 1.
- Double rubbing was performed with a friction tester FR-1B (manufactured by Suga Test Instruments Co., Ltd.) at a load of 900 g / cm 2 using methyl ethyl ketone (MEK) and ethanol as solvents. The number of rubbing times when the coating film was peeled was measured visually.
- the coating films formed in Examples 1 to 8 are superior in solvent resistance compared to the coating films formed using the same aqueous resin in Comparative Examples 1 to 6. .
- the spot test was done by the method shown in Table 2 about the coating film formed as mentioned above.
- the results are shown in Tables 3 and 4.
- spot test Cotton (15 mm ⁇ 15 mm) moistened with the target solution is allowed to stand on the coating film for 1 hour (the cotton always remains wet), and after 1 hour, the cotton is removed and the state of the coating film is shown in Table 2. Score according to the score table shown in. Further, in the state where the coating film is completely dried after removing the cotton, the appearance is observed again, the score is similarly obtained, and the total score is obtained by adding the score in the wet state.
- Solvent 1 Ammonia water (1.4% by mass)
- Solvent 2 Ethanol (50% by mass)
- Solvent 3 Isopropyl alcohol (70% by mass)
- Solvent 4 Sodium hydroxide water (1% by mass)
- MEK Methyl ethyl ketone detergent 1: Window (glass cleaner manufactured by Johnson SC)
- Detergent 2 FORMULA 409 (kitchen cleaner made by The Clorox Company)
- the coating films formed in Examples 1 to 8 are superior in solvent resistance compared to coating films formed using the same aqueous resin in Comparative Examples 1 to 6. I understand.
- Example 9 To 10 g of a polyurethane resin (manufactured by U915 Alberdingk), 2.0 g of the carbodiimide solution obtained in Synthesis Example 2 was added and stirred well to prepare an aqueous coating composition. The obtained aqueous coating composition was cast on an ABS plate (200 mm ⁇ 100 mm ⁇ 1 mm) to a thickness of 20 ⁇ m to form a coating film. After casting, curing was performed at 80 ° C. for 10 minutes.
- a polyurethane resin manufactured by U915 Alberdingk
- Example 10 A coating film was formed in the same manner as in Example 9 except that the carbodiimide solution obtained in Synthesis Example 3 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 11 A coating film was formed in the same manner as in Example 9 except that the carbodiimide solution obtained in Synthesis Example 4 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 12 A coating film was formed in the same manner as in Example 9 except that the carbodiimide solution obtained in Synthesis Example 5 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 7 A coating film was formed in the same manner as in Example 9 except that 2.6 g of the carbodiimide solution obtained in Synthesis Example 6 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Comparative Example 8 A coating film was formed in the same manner as in Example 9 except that 2.0 g of the carbodiimide solution obtained in Synthesis Example 7 was used instead of the carbodiimide solution obtained in Synthesis Example 2.
- Example 9 Without adding the carbodiimide solution, a coating film was formed in the same manner as in Example 9 using only 10 g of polyurethane resin (manufactured by U915 Alberdingk).
- the aqueous resin composition containing the carbodiimide compound or carbodiimide composition of the present invention is excellent in water resistance, solvent resistance, adhesion, etc., it is suitably used as a paint, ink, fiber treatment agent, adhesive, coating agent, etc. .
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Abstract
Description
この水溶性または水分散性の水性塗料は、水性媒体を用いることから、環境汚染や火災などの心配がないうえに、刷毛、ローラ、スプレーガンなどの塗装機器の掃除や、塗料汚染の後始末なども水で簡単にできるので、近年、特にその需要が伸びてきている。
水性樹脂には、樹脂自体に水溶性または水分散性を付与するために、一般にカルボキシル基が導入されている。このため、塗膜中に残存するカルボキシル基が加水分解を誘引し、塗膜の強度、耐久性、美観を損ねることがあった。
しかし、これらの架橋剤は、毒性、反応性などの問題から使用しにくい場合がある。すなわち、上記架橋剤による架橋反応は、カルボキシル基をつぶしながら進行するものであるため、カルボキシル基の減少により、塗膜の強度、耐水性、耐久性などを向上させることはできるが、未反応の架橋剤が残存すると塗膜に毒性が生じる場合がある。一方、塗膜中に未反応のカルボキシル基が残存すれば、塗膜の耐水性や耐久性が低下する。このように、架橋剤および水性樹脂中のカルボキシル基が100%反応しない場合、様々な問題が生じることになる。
この水性ジシクロヘキシルメタンカルボジイミドは、毒性がなく、ポットライフも十分であるといった特徴を有している。
従って本発明は、水性樹脂に架橋剤として添加した場合に、ポットライフは従来と同等程度でありながら、耐水性、耐溶剤性、密着性を向上させることができるカルボジイミド化合物、カルボジイミド組成物及び水性塗料組成物を提供することを目的とする。
1.下記一般式(1)で表されるカルボジイミド化合物、
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。)
2.下記一般式(1-a)で表されるカルボジイミド化合物、
3.下記一般式(1-b)で表されるカルボジイミド化合物、
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。)
4.上記1~3のいずれかに記載のカルボジイミド化合物と、架橋型水性樹脂とを含有する水性塗料組成物、
5.下記一般式(1-a)で表されるカルボジイミド化合物、下記一般式(1-b)で表されるカルボジイミド化合物及び下記一般式(2)で表されるカルボジイミド化合物を含有するカルボジイミド組成物、及び
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。)
6.上記5に記載のカルボジイミド組成物と、架橋型水性樹脂とを含有する水性塗料組成物、
を提供するものである。
本発明に係るカルボジイミド化合物は、末端に特定の親水性セグメントを有するカルボジイミド化合物であり、水溶性又は水分散性であって、特に水性樹脂の架橋剤として好適に用いることができる。
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。)
上記L1、L2で表される2価の脂肪族炭化水素基、2価の脂環族炭化水素基、2価の芳香族炭化水素基及び2価の複素環基は置換基を有していてもよく、置換基として好ましくはアルキル基、アルケニル基、アルキニル基、アリール基、アミノ基、アルコキシ基、アリールオキシ基、アシル基、アルコキシカルボニル基、アリールオキシカルボニル基、アシルオキシ基、アシルアミノ基、アルコキシカルボニルアミノ基、アリールオキシカルボニルアミノ基、スルホニルアミノ基、スルファモイル基、カルバモイル基、アルキルチオ基、アリールチオ基、スルホニル基、ハロゲン原子、シアノ基、芳香族複素環基であり、より好ましくはアルキル基、アリール基、アルコキシ基、アリールオキシ基、ハロゲン原子、シアノ基であり、さらに好ましくはアルキル基、アリール基、アルコキシ基、アリールオキシ基であり、特に好ましくはアルキル基、アリール基、アルコキシ基である。
上記一般式(1)、(1-a)、(1-b)及び(2)における炭素数3~13の2価の脂環族炭化水素基としては、具体的には、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、シクロへプチル基、シクロオクチル基、シクロノニル基、ビシクロヘプチル基、ビシクロオクチル基、トリシクロヘプチル基、アダマンチル基等の2価基やジシクロヘキシルメタンの2価基が挙げられ、シクロペンチル基、シクロヘキシル基、シクロへプチル基、ビシクロヘプチル基、ビシクロオクチル基又はアダマンチル基の2価基或いはジシクロヘキシルメタンの2価基が好ましい。
上記一般式(1)、(1-a)、(1-b)及び(2)における炭素数6~14の2価の芳香族炭化水素基としては、具体的には、フェニレン基、ナフチレン基、ビフェニレン基、アントラニレン基、ペリレニレン基、ピレニレン基等が挙げられ、フェニレン基、ナフチレン基、ビフェニレン基が好ましい。
上記一般式(1)、(1-a)、(1-b)及び(2)における炭素数3~12の2価の複素環基としては、具体的には、イミダゾール、ベンゾイミダゾール、ピロール、フラン、チオフェン、ベンゾチオフェン、オキサジアゾリン、インドリン、カルバゾール、ピリジン、キノリン、イソキノリン、ベンゾキノン、ピラロジン、イミダゾリジン、ピペリジン等が挙げられる。
上記一般式(b)における炭素数1~4のアルキル基の具体例としては、メチル基、エチル基、プロピル基、イソプロピル基、n-ブチル基、sec-ブチル基、tert-ブチル基が挙げられる。
R5-O-(CH2-CHR6-O)m-H ・・・(B)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。)
上記一般式(B)における炭素数1~4のアルキル基の具体例としては、メチル基、エチル基、プロピル基、イソプロピル基、n-ブチル基、s-ブチル基、イソブチル基、t-ブチル基が挙げられる。
また、上記一般式(A)で表される親水性有機化合物A及び上記一般式(B)で表される親水性有機化合物Bとしては、それぞれ、1種類の化合物を単独で用いてもよいし、複数の化合物を組み合わせて用いてもよい。
上記一般式(A)で表される親水性有機化合物Aとしては、グリコール酸メチル及び乳酸メチルが好ましく、上記一般式(B)で表される親水性有機化合物Bとしては、ポリエチレングリコールモノメチルエーテルが好ましい。
また、イソシアネート末端カルボジイミド化合物に、親水性有機化合物Aを反応させて、或いは、親水性有機化合物A及び親水性有機化合物Bの混合物を反応させて、親水性セグメントを付加する際の反応温度は、通常60~180℃、好ましくは100~160℃である。
本発明の水性塗料組成物において、各成分の配合割合は任意であるが、得られる塗膜の物性および経済性のバランスなどを考慮すると、水性樹脂100質量部に対し、カルボジイミド化合物又はカルボジイミド組成物を、0.5~15質量部の割合で用いることが好ましく、特に1~10質量部の割合で用いることが好ましい。
また、水性樹脂を含む水溶液または水分散液の樹脂濃度に特に制限はないが、得られる水性塗料組成物の塗工性および塗工層の乾燥性などの点から、15~50質量%程度が好ましく、20~40質量%程度がより好ましい。
水性媒体としては、水のみからなる完全水系であることが、環境面から好ましい。
本発明の水性塗料組成物が、上記一般式(1-a)で表される本発明のカルボジイミド化合物を含有する場合には、例えば界面活性剤、分散剤等と組み合わせたり、あるいは他の末端に親水性有機化合物を有するカルボジイミド化合物と組み合わせて用いることにより水溶性または水分散性とすることができる。
この場合、塗布法としては従来公知の方法を適宜用いることができ、例えば、刷毛塗り、タンポ塗り、吹付塗り、ホットスプレー塗り、エアレススプレー塗り、ローラ塗り、カーテンフロー塗り、流し塗り、浸し塗り、ナイフエッジコートなどを用いることができる。
塗工層を形成後、硬化を促進するために硬化処理を行うこともできる。硬化処理は、通常、加熱処理して塗膜の架橋反応を促進させる方法が用いられる。加熱処理方法に特に制限はなく、例えば電気加熱炉、熱風加熱炉、赤外線加熱炉、高周波加熱炉などを用いる方法を採用することができる。
(IR)
FTIR-8200PC(島津製作所製)を使用した。
(GPC)
RI検出器:RID-6A(島津製作所製)
カラム:KF-806、KF-804L、KF-804L
展開溶媒:THF 1ml/min.
ポリスチレン換算により算出した。
(NCO%)
平沼自動滴定装置COM-900(平沼産業(株)製)、タイトステーション K-900(平沼産業(株)製)を使用し、既知濃度のジブチルアミン/トルエン溶液を加え、塩酸水溶液で電位差滴定により算出した。
4,4’-ジシクロヘキシルメタンジイソシアネート 1572gとカルボジイミド化触媒(3-メチル-1-フェニル-2-ホスホレン-1-オキシド)7.86gとを、還流管および撹拌機付き3000ml反応容器に入れ、窒素気流下185℃で10時間撹拌し、イソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)を得た。赤外吸収(IR)スペクトル測定により波長2150cm-1前後のカルボジイミド基による吸収ピークを確認した。NCO%を測定した結果9.16%であった。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、これにポリエチレングリコールモノメチルエーテル(平均分子量400)13.6gと乳酸メチル8.2gを加え、150℃まで加温して撹拌しながら5時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認して、約80℃まで冷却し、水を投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。GPCの測定により、ポリスチレン換算数平均分子量は1500であった。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、ポリエチレングリコールモノメチルエーテル(平均分子量400)13.6gとグルコール酸メチル7.1gを加え、150℃まで加温して撹拌しながら5時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認して、約80℃まで冷却し、水を投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。GPCの測定により、ポリスチレン換算数平均分子量は1500であった。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、乳酸メチル12.7gを加え、150℃まで加温して撹拌しながら5時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認した。GPCの測定により、ポリスチレン換算数平均分子量は1300であった。その後、約80℃まで冷却し、2-(2-n-ブトキシエトキシ)エタノールを投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、グリコール酸メチル11.0gを加え、150℃まで加温して撹拌しながら5時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認した。GPCの測定により、ポリスチレン換算数平均分子量は1300であった。その後、約80℃まで冷却し、2-(2-n-ブトキシエトキシ)エタノールを投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、ポリエチレングリコールモノメチルエーテル(平均分子量380)42.9gを加え、150℃まで加温して撹拌しながら5時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認した。GPCの測定により、ポリスチレン換算数平均分子量は2000であった。その後、約80℃まで冷却し、水を投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。
合成例1で得られたイソシアネート末端4,4’-ジシクロヘキシルメタンカルボジイミド(重合度=3)51.8gを120℃で溶かし、その後65℃まで冷却し、メタノール7.75gを加え、撹拌しながら8時間反応させた後、赤外吸収(IR)スペクトル測定により波長2200~2300cm-1のイソシアネート基の吸収が消失したことを確認した。GPCの測定により、ポリスチレン換算数平均分子量は1000であった。2-(2-n-ブトキシエトキシ)エタノールを投入して固形分40質量%の淡黄色透明なカルボジイミド溶液を得た。
アクリル樹脂(Carboset 519 Noveon社製)10gに、合成例2で得られたカルボジイミド溶液2.6gを加えてよく撹拌して水性塗料組成物を調製した。
得られた水性塗料組成物を、アルミ板(200mm×100mm×1mm)上に厚みが20μmとなるようにキャスティングして塗膜を形成した。キャスティング後、100℃で10分キュアを行った。
合成例2で得られたカルボジイミド溶液に代えて、合成例3で得られたカルボジイミド溶液を用いた以外は、実施例1と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例4で得られたカルボジイミド溶液を用いた以外は、実施例1と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例5で得られたカルボジイミド溶液を用いた以外は、実施例1と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例6で得られたカルボジイミド溶液3.4gを用いた以外は、実施例1と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例7で得られたカルボジイミド溶液2.6gを用いた以外は、実施例1と同様にして塗膜を形成した。
カルボジイミド溶液を添加せずに、アクリル樹脂(Carboset 519 Noveon社製)10gのみを用いて、実施例1と同様にして塗膜を形成した。
ポリウレタン樹脂(U915 Alberdingk社製)10gに、合成例2で得られたカルボジイミド溶液2.0gを加えてよく撹拌して水性塗料組成物を調製し、実施例1と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例3で得られたカルボジイミド溶液を用いた以外は、実施例5と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例4で得られたカルボジイミド溶液を用いた以外は、実施例5と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例5で得られたカルボジイミド溶液を用いた以外は、実施例5と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例6で得られたカルボジイミド溶液2.6gを用いた以外は、実施例5と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例7で得られたカルボジイミド溶液2.0gを用いた以外は、実施例5と同様にして塗膜を形成した。
カルボジイミド溶液を添加せずに、ポリウレタン樹脂(U915 Alberdingk社製)10gのみを用いて、実施例5と同様にして塗膜を形成した。
(ラビング試験)
溶剤にメチルエチルケトン(MEK)とエタノールを用い、加重900g/cm2にて摩擦試験機FR-1B(スガ試験機株式会社製)によりダブルラビングを行った。塗膜が剥離したときのラビング回数を目視にて測定した。
(スポット試験)
対象溶液で湿らせたコットン(15mm×15mm)を塗膜上に1時間放置し(コットンは常に湿潤している状態を保持する)、1時間後コットンを除去して塗膜の様子を表2に示す点数表に従って点数化する。さらに、コットン除去後に塗膜が完全に乾燥した状態において、再度外観を観察し、同様にして点数化し、湿潤状態の時の点数と合計したものを全体の点数とする。
(使用した溶剤)
溶剤1:アンモニア水(1.4質量%)
溶剤2:エタノール(50質量%)
溶剤3:イソプロピルアルコール(70質量%)
溶剤4:水酸化ナトリウム水(1質量%)
MEK:メチルエチルケトン
洗剤1:Windex(JhonsonSC製ガラスクリーナー)
洗剤2:FORMULA409(The Clorox Company製キッチンクリーナー)
ポリウレタン樹脂(U915 Alberdingk社製)10gに、合成例2で得られたカルボジイミド溶液2.0gを加えてよく撹拌して水性塗料組成物を調製した。
得られた水性塗料組成物を、ABS板(200mm×100mm×1mm)上に厚みが20μmとなるようにキャスティングして塗膜を形成した。キャスティング後、80℃で10分キュアを行った。
合成例2で得られたカルボジイミド溶液に代えて、合成例3で得られたカルボジイミド溶液を用いた以外は、実施例9と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例4で得られたカルボジイミド溶液を用いた以外は、実施例9と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例5で得られたカルボジイミド溶液を用いた以外は、実施例9と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例6で得られたカルボジイミド溶液2.6gを用いた以外は、実施例9と同様にして塗膜を形成した。
合成例2で得られたカルボジイミド溶液に代えて、合成例7で得られたカルボジイミド溶液2.0gを用いた以外は、実施例9と同様にして塗膜を形成した。
カルボジイミド溶液を添加せずに、ポリウレタン樹脂(U915 Alberdingk社製)10gのみで実施例9と同様にして塗膜を形成した。
(クロスカット試験)
JIS K-5600のクロスカット法に準拠し、塗膜を1mm間隔の格子10行10列にカットし、表5に示す点数表に従って判定した。
Claims (10)
- 下記一般式(1)で表されるカルボジイミド化合物。
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。) - 下記一般式(1-b)で表されるカルボジイミド化合物。
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。) - 前記R3がメチル基であり、R4が水素原子又はメチル基である請求項1~3のいずれかに記載のカルボジイミド化合物。
- 請求項1~4のいずれかに記載のカルボジイミド化合物と、架橋型水性樹脂とを含有する水性塗料組成物。
- 下記一般式(1-a)で表されるカルボジイミド化合物、下記一般式(1-b)で表されるカルボジイミド化合物及び下記一般式(2)で表されるカルボジイミド化合物を含有するカルボジイミド組成物。
R5-O-(CH2-CHR6-O)m- ・・・(b)
(式中、R5は炭素数1~4のアルキル基、R6は水素原子またはメチル基であり、mは4~30の整数である。) - 前記R3がメチル基であり、R4が水素原子又はメチル基である請求項6に記載のカルボジイミド組成物。
- 前記一般式(a)で表される基と、前記一般式(b)で表される基とのモル比が、1:10~30:1である請求項6または7に記載のカルボジイミド組成物。
- 請求項6~8のいずれかに記載のカルボジイミド組成物と、架橋型水性樹脂とを含有する水性塗料組成物。
- 前記架橋型水性樹脂が、分子内にカルボキシル基を有する、水溶性または水分散性のウレタン系樹脂、アクリル系樹脂およびポリエステル系樹脂から選ばれる1種以上である請求項9記載の水性塗料組成物。
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Also Published As
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US8604154B2 (en) | 2013-12-10 |
EP2256142A4 (en) | 2013-02-27 |
KR20100138961A (ko) | 2010-12-31 |
EP2256142B1 (en) | 2014-02-26 |
JP5539623B2 (ja) | 2014-07-02 |
JP2009235278A (ja) | 2009-10-15 |
US20110021679A1 (en) | 2011-01-27 |
EP2256142A1 (en) | 2010-12-01 |
KR101596058B1 (ko) | 2016-02-19 |
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