WO2020032063A1 - 水性分散体、その製造方法、塗料組成物及び塗膜 - Google Patents
水性分散体、その製造方法、塗料組成物及び塗膜 Download PDFInfo
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Definitions
- the present disclosure relates to an aqueous dispersion, a method for producing the same, a coating composition, and a coating film.
- a polymer having a 2-oxazoline group is used as a cross-linking agent for cross-linking a polymer having a carboxyl group, a thiol group, or the like because the 2-oxazoline group has a cross-linking property (Patent Documents 1 and 2). ).
- an emulsion type aqueous dispersion used in a state where the polymer is dispersed in water or a water-soluble type used in a state of being dissolved in water is known. Widely used in the field of water-based paints and the like.
- a resin emulsion containing a polymer having a 2-oxazoline group is used as a crosslinking agent
- the resin emulsion is mixed with a base resin containing a functional group such as a carboxyl group and used as an aqueous resin composition.
- aqueous resin compositions are used in paints, adhesives, surface treatment agents, fiber treatment agents, and the like, and are mainly applied to base materials and the like in factory lines and dried by heating to obtain final products.
- the present disclosure has been made in view of the above circumstances, and has as its object to provide an aqueous dispersion having high mechanical stability.
- the aqueous dispersion of the present disclosure includes a polymer having a 2-oxazoline group and a surfactant, and the surfactant includes a sulfate compound represented by the following chemical formula (S).
- S a sulfate compound represented by the following chemical formula (S).
- R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation. Represents.)
- the ratio of the above-mentioned sulfate compound to the total amount of the surfactant contained in the aqueous dispersion is preferably 50 to 100% by mass.
- the aqueous dispersion preferably further contains an isothiazoline compound.
- the aqueous dispersion preferably contains 50 to 5000 ppm by mass of the isothiazoline-based compound based on the total amount of the polymer.
- the isothiazoline-based compound contains benzoisothiazoline.
- the aqueous dispersion preferably contains 0.5% by mass or more of the sulfate compound with respect to the total amount of the polymer.
- the polymer preferably contains 0.5 to 50% by mass of a structural unit having an oxazoline group based on the total mass of the polymer.
- the polymer preferably contains 5 to 40% by mass of a structural unit having an oxazoline group based on the total mass of the polymer.
- the method for producing an aqueous dispersion according to the present disclosure includes a polymer (A) having a 2-oxazoline group and a surfactant, wherein the surfactant has the following chemical formula (S): R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation.
- S chemical formula
- the method includes a step of producing the polymer (A).
- the coating composition of the present disclosure includes an aqueous dispersion and a polymer having a carboxyl group (B), and the aqueous dispersion includes a polymer having a 2-oxazoline group (A) and a surfactant.
- the surfactant has the following chemical formula (S); R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation. Represents.) And a sulfate compound represented by the formula:
- the coating film of the present disclosure comprises a polymer having a 2-oxazoline group (A) and the following chemical formula (S); R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation. Represents.) And a polymer (B) having a carboxyl group.
- an aqueous dispersion having high mechanical stability can be provided.
- the aqueous dispersion of the present embodiment includes a polymer having a 2-oxazoline group and a surfactant, and the surfactant includes a sulfate compound represented by the following chemical formula (S).
- S a sulfate compound represented by the following chemical formula (S).
- R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation. Represents.)
- polymer (A)> The polymer having a 2-oxazoline group is not limited as long as it is a polymer containing a structural unit having a 2-oxazoline group, and only one type of a structural unit having a 2-oxazoline group is contained. And two or more kinds may be contained. Further, the polymer may contain another structural unit having no 2-oxazoline group.
- the polymer having a 2-oxazoline group is also referred to as polymer (A).
- the structural unit having a 2-oxazoline group may be derived from a monomer having a 2-oxazoline group, or a monomer having a 2-oxazoline group if a structural unit having a 2-oxazoline group is provided. May be derived from other sources.
- the polymer (A) is obtained by polymerizing a monomer having a 2-oxazoline group and, if necessary, one or more other monomers having no 2-oxazoline group (b).
- the monomer having a 2-oxazoline group examples include a monomer having an addition-polymerizable functional group (addition-polymerizable oxazoline), and include an addition-polymerizable oxazoline (a) represented by the following general formula (a). ).
- R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, a halogen atom, a hydroxy group, an alkyl group, an alkoxy group, an aralkyl group, a phenyl group or a substituted phenyl group, and R 5 is Acyclic organic groups having an addition-polymerizable unsaturated bond.
- Examples of the acyclic organic group having an addition-polymerizable unsaturated bond include a vinyl group, an isopropenyl group, and a (meth) acryloyloxy group.
- addition-polymerizable oxazoline (a) examples include 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-isopropenyl- 2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, 2-isopropenyl-5-ethyl-2-oxazoline and the like, and one or a mixture of two or more selected from these groups.
- 2-isopropenyl-2-oxazoline is preferred because it is easily available industrially.
- the 2-oxazoline group is added to the total mass of the polymer (A).
- the structural unit having the structural unit is preferably contained in an amount of 0.5 to 50% by mass, more preferably 1 to 45% by mass, still more preferably 5 to 40% by mass or more, still more preferably 5 to 30% by mass.
- the other monomer (b) is not particularly limited as long as it does not react with the 2-oxazoline group and can be copolymerized with the addition-polymerizable oxazoline (a).
- (meth) acrylic acid Alkyl (meth) acrylates such as methyl, butyl (meth) acrylate and 2-ethylhexyl (meth) acrylate; hydroxy groups such as methoxypolyethylene glycol (meth) acrylate and 2-hydroxyethyl (meth) acrylate (Meth) acrylates such as amino group-containing (meth) acrylates such as (meth) acrylates, 2-aminoethyl (meth) acrylate and salts thereof; (meth) acrylonitriles and the like Unsaturated nitriles; (meth) acrylamide, N-methylol (meth) acrylamide, N- (2-hydroxyethyl) Unsaturated amides such as meth) acryl
- the polymer (A) preferably contains 10 to 80% by mass, more preferably 20 to 60% by mass of a structural unit derived from an alkyl (meth) acrylate based on the total amount of the polymer (A).
- the polymer (A) preferably contains 0.5 to 70% by mass of a structural unit derived from ⁇ , ⁇ -unsaturated aromatic monomers based on the total amount of the polymer (A), More preferably, it contains 60% by mass.
- the polymer (A) preferably contains 0.01 to 5% by mass of a structural unit derived from a monomer having a plurality of vinyl groups in the molecule, based on the total amount of the polymer (A). It is more preferred that the content be 1 to 1% by mass.
- the polymer (A) may contain a structural unit derived from a monomer having an acid group.
- the monomer having an acid group include (meth) acrylic acid, acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, vinyl acetic acid, vinyl lactic acid, and unsaturated phosphonic acid.
- the monomer having an acid group tends to impart mechanical stability to the obtained copolymer.
- the aqueous dispersion of the present embodiment contains the above-mentioned sulfate (S), the mechanical stability is improved. Therefore, the polymer (A) is derived from a monomer having an acid group.
- Structural units can be reduced, and specifically, the content of the structural unit derived from the monomer having an acid group in the polymer (A) is 0.5 to the total amount of the polymer (A). It may be less than mass% and may not contain any structural unit derived from a monomer having an acid group. Thereby, the reaction between the acid group and the 2-oxazoline group in the polymer (A) or in the monomer mixture can be suppressed.
- the weight average molecular weight of the polymer (A) is preferably from 100,000 to 5,000,000 g / mol, more preferably from 300,000 to 3,000,000 g / mol. The weight average molecular weight can be measured by gel filtration chromatography (GPC).
- the weight average molecular weight is measured, for example, under the following measurement conditions.
- Measuring instrument HLC-8120GPC (trade name, manufactured by Tosoh Corporation)
- Molecular weight column TSK-GEL GMHXL-L and TSK-GELG5000HXL (all manufactured by Tosoh Corporation) connected in series
- Eluent tetrahydrofuran (THF)
- Standard material for calibration curve polystyrene (manufactured by Tosoh Corporation)
- Measuring method The object to be measured is dissolved in THF so that the solid content is about 0.2% by mass, and the molecular weight is measured by using a substance filtered through a filter as a measurement sample.
- the emulsion particles contained in the aqueous dispersion contain the polymer (A) and the surfactant. And the like, and may have a crosslinked body bonded (crosslinked).
- the polymer (A) has a crosslinked product, it is difficult to measure the weight average molecular weight, so the upper limit of the weight average molecular weight of the polymer (A) is not particularly limited.
- the glass transition temperature (Tg) of the polymer (A) is not particularly limited, but is preferably higher than -10 ° C, more preferably -5 ° C or higher, and further preferably 0 ° C or higher.
- the upper limit of the glass transition temperature can be, for example, 50 ° C. or lower.
- the glass transition temperature can be measured by a differential calorimetry (ASTM @ D3418-08), but may be estimated from the following Fox equation.
- Tg ′ is Tg (absolute temperature) of the polymer.
- W 1 ′, W 2 ′,... W n ′ are mass fractions of each monomer with respect to all monomer components.
- T 1 , T 2 ,..., T n are glass transition temperatures (absolute temperatures) of homopolymers (homopolymers) composed of the respective monomer components.
- the Tg values of typical homopolymers used to calculate the glass transition temperature (Tg) of the polymerizable monomer component according to the above formula (1) are shown below.
- the sulfate compound of the present embodiment is represented by the following chemical formula (S).
- R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, and is preferably a linear or branched aliphatic hydrocarbon group.
- R 1 is preferably an alkyl group represented by the general formula C m H 2m + 1 , m is preferably 8 to 20, more preferably 10 to 18, and 10 to 16 Is more preferably, 11 to 15 is even more preferable, and 12 to 14 is particularly preferable.
- R 1 may be a linear or branched aliphatic hydrocarbon group having one or more unsaturated double bonds, and a linear or branched aliphatic hydrocarbon group having one unsaturated double bond. It may be a hydrocarbon group. Specific examples of such R 1 include an oleyl group and the like.
- R 2 is an alkylene group represented by the general formula C r H 2r (where r is 2 to 4), specifically, an ethylene group, a 1,3-propylene group, a 1,2-propylene group, a 1,4 -Butylene group, 1,3-butylene group, 1,2-butylene group and the like. Ethylene group and 1,2-propylene group are preferable from the viewpoint of further improving the mechanical stability of the aqueous dispersion.
- ⁇ n is from 2 to 15, preferably from 2 to 10, more preferably from 3 to 8, and even more preferably from 3 to 6.
- n may be an integer, but when the aqueous dispersion contains a plurality of sulfate compounds represented by the chemical formula (S), n is an arithmetic average over the sulfate compound contained in the aqueous dispersion. (Average number) value.
- X is a monovalent cation, and specific examples include an ammonium ion and an alkali metal ion.
- alkali metal ion examples include a sodium ion and a potassium ion.
- the aqueous dispersion of the present disclosure includes the polymer (A) and a sulfate compound.
- the content of the polymer (A) in the aqueous dispersion is preferably from 1 to 80% by mass, more preferably from 5 to 60% by mass, and more preferably from 10 to 50% by mass, based on the total amount of the aqueous dispersion. Is more preferable.
- the aqueous dispersion of the present disclosure can contain components other than the polymer (A) as long as the effect is not impaired.
- the content of non-volatile components in the aqueous dispersion of the present disclosure is preferably from 1 to 80% by mass, more preferably from 5 to 60% by mass, and preferably from 10 to 80% by mass, based on the total amount of the aqueous dispersion. More preferably, it is 50% by mass.
- the aqueous dispersion containing the polymer (A) is prepared by polymerizing the addition-polymerizable oxazoline (a) and, if necessary, at least one other monomer (b) in an aqueous medium by a conventionally known polymerization method. It can be manufactured by performing.
- the aqueous dispersion of the present embodiment is obtained by subjecting a monomer mixture containing an addition-polymerizable oxazoline to emulsion polymerization in the presence of a surfactant containing the above-mentioned sulfate compound (polymer (A).
- Emulsion polymerization may be performed on a pre-emulsion obtained by adding a monomer mixture to an aqueous solution containing a surfactant, or while dropping the monomer mixture into an aqueous solution containing a surfactant. Is also good.
- the aqueous medium that can be used is not particularly limited, but for example, water; or water and methanol, ethanol, propanol, isopropanol, butanol, tertiary butanol, ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol mono.
- a mixed solution with an organic solvent such as butyl ether, diethylene glycol, acetone, and methyl ethyl ketone may be used.
- the aqueous dispersion of this embodiment includes emulsion particles containing the polymer (A) and water as a continuous phase.
- the average particle size of the aqueous dispersion measured by a dynamic light scattering method is preferably from 10 to 300 nm, more preferably from 40 to 200 nm.
- the content of the above-mentioned sulfate compound in the aqueous dispersion is preferably 0.5% by mass or more based on the total amount of the polymer having a 2-oxazoline group, from the viewpoint of further improving the mechanical stability.
- the content is more preferably from 7 to 10% by mass, still more preferably from 1 to 5% by mass, even more preferably from 1.5 to 4% by mass, and most preferably from 2 to 3.5% by mass.
- the aqueous dispersion may contain a surfactant other than the above-mentioned sulfate compound.
- the surfactant may be added at the time of performing emulsion polymerization.
- the polymer (A) may contain a structural unit derived from a reactive emulsifier.
- the surfactant other than the above-mentioned sulfate ester compound is not particularly limited, and examples thereof include an anionic surfactant, a nonionic surfactant, a cationic surfactant, an amphoteric surfactant, a polymer surfactant, and a reactive agent. Any surfactant, such as a surfactant, can be used.
- anionic surfactant examples include, for example, alkali metal alkyl sulfates such as sodium dodecyl sulfate and potassium dodecyl sulfate; ammonium alkyl sulfates such as ammonium dodecyl sulfate; sodium dodecyl polyglycol ether sulfate; sodium sulfolisinoate Alkyl sulfonates such as alkali metal salts of sulfonated paraffins and ammonium salts of sulfonated paraffins; fatty acid salts such as sodium laurylate, triethanolamine oleate and triethanolamine aviate; sodium dodecylbenzene sulfonate and alkali phenol hydroxyethylene.
- alkali metal alkyl sulfates such as sodium dodecyl sulfate and potassium dodecyl sulfate
- ammonium alkyl sulfates such as
- Alkyl aryl sulfonates such as alkali metal sulfates; high alkyl naphthalenesul It can be exemplified polyoxyethylene alkylaryl sulfate salts; emission salts; naphthalenesulfonic acid-formalin condensate; dialkyl sulfosuccinate, polyoxyethylene alkyl sulfate salt.
- nonionic surfactant examples include polyoxyethylene alkyl ether; polyoxyethylene alkyl aryl ether; sorbitan fatty acid ester; polyoxyethylene sorbitan fatty acid ester; fatty acid monoglyceride such as glycerol monolaurate; Oxyethylene oxypropylene copolymer; a condensation product of ethylene oxide with an aliphatic amine, amide or acid can be used.
- polymer surfactant examples include, for example, polyvinyl alcohol; sodium poly (meth) acrylate, potassium poly (meth) acrylate, ammonium poly (meth) acrylate, polyhydroxyethyl (meth) acrylate; Polyhydroxypropyl (meth) acrylate; or a copolymer of two or more polymerizable monomers, which are constituent units of these polymers, or a copolymer with another monomer, and the like.
- phase transfer catalysts such as crown ethers exhibit surface activity and may be used as a surfactant.
- the reactive surfactant examples include those having one or more polymerizable carbon-carbon unsaturated bonds in a molecule, and specifically, for example, sodium propenyl-2-ethylhexylbenzenesulfosuccinate, ( Sulfate of polyoxyethylene (meth) acrylate, ammonium sulfate of polyoxyethylene alkylpropenyl ether, phosphate of polyoxyethylene (meth) acrylate, ammonium sulfate of bis (polyoxyethylene polycyclic phenyl ether) methacrylate
- Nonionic reactive surfactants and the like can be mentioned. These surfactants may be used alone or in combination of two or more. However, in consideration of the water resistance of the dried coating film from the aqueous resin dispersion, the reactivity may be reduced. Surfactants are preferred.
- the amount of the surfactant other than the above-mentioned sulfate ester compound is not particularly limited, but is preferably 0.3 to 5% by mass, more preferably 0 to 5% by mass, based on the amount of the entire polymerizable monomer component. 0.5 to 3% by mass. If the amount of the surfactant other than the above-mentioned sulfate ester compound is too large, the water resistance of the coating film is reduced, and if the amount is too small, the polymerization stability of the resin particles is significantly reduced. Since the particle size of the resin is greatly affected by the type of surfactant other than the above-mentioned sulfate ester compound, the amount to be used needs to be appropriately selected within the above range according to the surfactant to be used. .
- the aqueous dispersion may not contain a surfactant other than the above-mentioned sulfate compound.
- the ratio of the above-mentioned sulfate compound to the total amount of the surfactant contained in the aqueous dispersion is preferably from 50 to 100% by mass, more preferably from 75 to 100% by mass.
- the aqueous dispersion of the present embodiment may contain a preservative.
- the preservative is not particularly limited, and examples thereof include isothiazoline-based compounds.
- the aqueous dispersion can be imparted with antiseptic performance or antibacterial performance without causing aggregation of the emulsion particles contained in the aqueous dispersion.
- the isothiazoline-based compound is not particularly limited as long as it can impart antiseptic performance or antibacterial performance to the aqueous dispersion, and includes a compound represented by the following formula (1) and a compound represented by the following formula (2). No.
- R 11 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms
- R 12 represents a hydrogen atom, a halogen atom, or a 1 to 6 carbon atoms.
- R 13 represents a hydrogen atom, a halogen atom, or an alkyl group having 1 to 6 carbon atoms.
- R 21 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms
- R 22 to R 25 each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. . ]
- R 11 and R 21 include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, and a decyl group.
- Examples of the alkyl group having 1 to 6 carbon atoms of R 12 , R 13 and R 22 to R 25 include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group.
- the halogen atom for R 13 include a chlorine atom.
- the aqueous dispersion may contain only one kind of the isothiazoline-based compound, or may contain two or more kinds thereof.
- the content of the isothiazoline compound in the aqueous dispersion is preferably from 10 to 5,000 ppm by mass, more preferably from 20 to 2,000 ppm by mass, and more preferably from 50 to 1,000 ppm by mass, based on the total amount of the polymer having a 2-oxazoline group. Is more preferable, and particularly preferably 100 to 500 ppm by mass.
- isothiazoline compounds examples include benzoisothiazoline (1,2-benzoisothiazol-3-one), methylisothiazoline (2-methyl-4-isothiazolin-3-one), and methylchloroimidazoline (5-chloro-2-methyl). -4-isothiazolin-3-one) is preferred, and benzoisothiazoline is more preferred.
- a solvent In the aqueous dispersion, a solvent, a plasticizer, an inorganic or organic filler, a coloring pigment, a dye, a thickener, a dispersant, a dispersant, a wetting agent, and an antifoaming agent, if necessary, within a range not to impair the purpose of the present disclosure. It is also possible to add a rust preventive or the like.
- the viscosity of the aqueous dispersion is not particularly limited, but is preferably 1,000 mPa ⁇ s or less at room temperature (25 ° C.), and more preferably 1 to 100 mPa ⁇ s, from the viewpoint of easy handling.
- the viscosity of the aqueous dispersion can be measured with a B-type viscometer.
- the aqueous dispersion of the present embodiment is further blended with a base resin having a functional group capable of performing a cross-linking reaction by opening the 2-oxazoline group of the polymer (A) to obtain a curable coating.
- a base resin having a functional group capable of performing a cross-linking reaction by opening the 2-oxazoline group of the polymer (A) to obtain a curable coating.
- It can be a composition.
- Examples of such a base resin include a polymer having a carboxyl group.
- the polymer having a carboxyl group is referred to as polymer (B).
- the polymer (B) may be a water-soluble or water-dispersible polymer having a carboxyl group.
- the polymer (B) has a structural unit derived from a monomer having a carboxyl group, and examples thereof include an acrylic resin, a polyester resin, a polyurethane resin, and a polyolefin resin, and an acrylic resin is preferable.
- the polymer (B) as the main agent is an acrylic resin
- the amount of the carboxyl group is preferably from 1 to 100 parts by mass based on the total mass of the polymer (B) and from 1 to 4 parts by mass of the monomer having a carboxyl group.
- the structural unit derived from a monomer having a carboxyl group may be derived from a monomer having a carboxyl group, or may be derived from a monomer other than a monomer having a carboxyl group.
- examples of the monomer having a carboxyl group include monocarboxylic acids, dicarboxylic acids, and dicarboxylic acid monoesters. More specifically, (meth) acrylic acid, maleic acid, fumaric acid, crotonic acid, itaconic acid, citraconic acid, maleic anhydride, monomethyl maleate, monobutyl maleate, monomethyl itaconate, monobutyl itaconate, vinylbenzoic acid , Monohydroxyethyl oxalate (meth) acrylate, carboxyl-terminated caprolactone-modified acrylate (for example, “Placcel FA” series; manufactured by Daicel Industries), and carboxyl-terminated caprolactone-modified methacrylate (for example, “Placcel FMA” series; manufactured by Daicel Industries, Ltd.) And the like. Among these, (meth) acrylic acid and itaconic acid are preferred. One or more of these can be appropriately selected and used. Among these, (meth) acrylic
- the monomer other than the monomer having a carboxyl group is not particularly limited, and examples thereof include the following, and one or two of them may be used in order to exert the performance derived from the monomer. More than one kind can be appropriately selected and used.
- Alkoxyalkyl esters of (meth) acrylic acid such as methoxybutyl (meth) acrylate, methoxyethyl (meth) acrylate, ethoxybutyl (meth) acrylate and trimethylolpropane tripropoxy (meth) acrylate.
- Aziridinyl group-containing monomers such as (meth) acryloylaziridine and 2-aziridinylethyl (meth) acrylate.
- Glycidyl (meth) acrylate, ⁇ -methylglycidyl acrylate, ⁇ -methylglycidyl methacrylate eg, “MGMA” manufactured by Daicel Chemical Industries, Ltd.
- glycidyl allyl ether oxocyclohexylmethyl (meth) acrylate, 3,4-epoxycyclohexylmethyl acrylate (For example, "Cyclomer (registered trademark) A400” manufactured by Daicel Chemical Industries, Ltd.) and epoxy such as 3,4-epoxycyclohexylmethyl methacrylate (for example, "Cyclomer (registered trademark) M100” manufactured by Daicel Chemical Industries, Ltd.) Group-containing monomers.
- Aromatic vinyl monomers such as styrene, ⁇ -methylstyrene, vinyltoluene and chloromethylstyrene.
- the polymer (B) preferably contains 20 to 80% by mass, more preferably 20 to 60% by mass of a structural unit derived from an alkyl (meth) acrylate based on the total amount of the polymer (B).
- the polymer (B) preferably contains 10 to 70% by mass, more preferably 20 to 60% by mass of structural units derived from aromatic vinyl monomers based on the total amount of the polymer (B).
- the polymer (B) can be prepared by a known polymerization method such as ordinary solution polymerization or emulsion polymerization.
- the preferred molecular weight is preferably 100,000 to 3,000,000, more preferably 300,000 to 2,000,000, and most preferably 500, by weight average molecular weight. 2,000 to 1,000,000. By setting the molecular weight in this range, the balance between the film formability of the coating film and the durability is improved.
- the molecular weight is preferably from 1,000 to 50,000, more preferably from 3,000 to 30,000, and most preferably from 5,000 to 20,000. By setting the molecular weight within this range, the balance between workability during coating and durability of the coating film is improved.
- polymers can be widely used.
- Water-dispersible or water-soluble acrylic resins such as Acryset 19E, Acryset 210E, Acryset 260E, Acryset 288E, Arolon 453 (all manufactured by Nippon Shokubai Co., Ltd.); Hydran HW-110, Hydran HW-131, Hydran HW-135, Hydran HW-320, Bondic 72070 (all manufactured by Dainippon Ink and Chemicals, Inc.), Poise 710, Poise Water-dispersible polyurethane resins such as 720 (all manufactured by Kao Corporation), Merci 525, Merci 585, Merci 414, Merci 455 (all manufactured by Toyo Polymer Co., Ltd.); Vironal MD-1200, Vironal MD-1400, Water-dispersible polyester resins such as Nal MD-1930 (all manufactured by Toyobo Co., Ltd.), WD3652 and WJL6342 (all manufactured by Eastman Chemical Co.
- the mixing ratio of the polymer (B) (the polymer having a carboxyl group) and the polymer (A) (the polymer having a 2-oxazoline group) is 100% by mass of the polymer (B).
- the amount of the polymer (A) is preferably from 1 to 50 parts by mass, more preferably from 2 to 30 parts by mass, even more preferably from 3 to 10 parts by mass, per part by mass.
- the coating composition of the present embodiment is, if necessary, within a range not to impair the purpose of the present disclosure, a solvent, a plasticizer, an inorganic or organic filler, a coloring pigment, a dye, a thickener, a dispersant, a wetting agent, It is also possible to add an antifoaming agent, a rust inhibitor and the like.
- a solvent e.g., a solvent, a plasticizer, an inorganic or organic filler, a coloring pigment, a dye, a thickener, a dispersant, a wetting agent, It is also possible to add an antifoaming agent, a rust inhibitor and the like.
- the aqueous dispersion of the polymer (B) may be added to the aqueous dispersion as needed. And other additives may be appropriately added and mixed.
- a surface treatment agent When used for a paint, a surface treatment agent, a coating agent, an adhesive, or a sealing agent, it may be applied to a substrate by a method commonly used in the art, such as a roll coater, spray, dipping, or brushing.
- the curing can be carried out at room temperature for 1 day to 2 weeks, but if necessary, by heating at 120 ° C. for about 30 minutes.
- the coating composition of the present embodiment contains the above isothiazoline-based compound, it tends to be able to improve the adhesive strength between the fiber material and the rubber when used as a fiber adhesive. Therefore, it can be suitably used as an adhesive for fibers in automobile tires and belts. Further, the fiber material adhered to rubber with the coating composition of the present embodiment tends to have a small amount of rubber adhered to the surface of the fiber material when peeled off from the rubber thereafter.
- Examples of the fiber material include polyester fiber, nylon fiber, carbon fiber, aramid fiber, and steel fiber.
- Examples of the rubber include acrylic rubber, isoprene rubber, chloroprene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, acrylonitrile-butadiene-styrene rubber, and the like.
- the coating composition can be applied to a substrate and dried to form a coating film.
- the coating film of the present embodiment comprises a polymer (A) having a 2-oxazoline group and a chemical formula (S); R 1 —O— (R 2 O) n SO 3 X (S) (Wherein, R 1 is an aliphatic hydrocarbon group having 8 to 20 carbon atoms, R 2 is an alkylene group having 2 to 4 carbon atoms, n is 2 to 15, and X is a monovalent cation. Represents.) And a polymer (B) having a carboxyl group. Heating may be performed at the time of drying, and heating and drying may be performed at 100 to 140 ° C. for 5 to 60 minutes.
- the atmosphere for drying is not particularly limited, but may be an atmosphere having a relative humidity of 60 to 70%.
- the mixture was cooled and filtered through a 300-mesh wire gauze to separate an aggregate, thereby obtaining an aqueous dispersion of a polymer having a pH of 8.0 and having a 2-oxazoline group.
- the measured nonvolatile content was 43.5% by mass.
- the glass transition temperature of the polymer was estimated by the Fox equation, it was 10 ° C.
- the average particle size (volume average particle size) of the emulsion particles contained in the aqueous dispersion was measured using a particle size distribution analyzer (“NICOMP Model 380” manufactured by Particle Sizing Systems) by a dynamic light scattering method. Table 1 shows the results.
- the surfactants in Table 1 are as follows.
- E-1000A a product of Kao Corporation, trade name "Ramtel E-1000A”, a polycyclic aromatic compound of the following chemical formula. 4D / 384: manufactured by Solvay Japan KK, trade name "4D / 384", polyoxyethylene mono (tristyrenated phenyl) ether sulfate ammonium salt.
- Examples 1 and 2 are more excellent in mechanical stability than Comparative Examples 1 to 3.
- aqueous dispersions of Examples 1 and 2 and Comparative Examples 1 to 3 were combined with the acrylic emulsion produced in Production Example 1 by a 2-oxazoline group based on 100 parts by mass of an acrylic polymer (nonvolatile) contained in the acrylic emulsion. Was blended so as to be 5 parts by mass to obtain a coating composition (clear coating). The following various properties were tested on the obtained coating composition. Table 2 shows the results.
- a glass plate on which a coating film was formed was produced in the same manner as in the solvent resistance test. An opening of a glass tube having a diameter of 30 mm and a length of 30 mm is placed on and adhered to the coating film of the glass plate on which the coating film is formed, and then ionized so that the coating film inside the glass tube comes into contact with water. With 10 mL of exchanged water poured into the glass tube, the mixture was left for 24 hours in an atmosphere at a temperature of 23 ⁇ 2 ° C. and a relative humidity of 65 ⁇ 3%. Thereafter, the state of the coating film in contact with ion-exchanged water was visually observed and evaluated based on the following evaluation criteria.
- the coating film was peeled off with a cutter blade, and the peeled coating film (free film) was used as a film for strength measurement.
- the film for strength measurement was stored in a thermo-hygrostat (temperature 25 ° C., humidity 60% RH) for 24 hours. Thereafter, the film was gripped by a chuck of a tensile tester (manufactured by Shimadzu Corporation, trade name: Autograph AGS-100D) and subjected to a tensile test in accordance with JIS P-8113 to measure the tensile strength of the strength measuring film. .
- the tensile strength of the film formed from the clear paint of the acrylic emulsion produced in Production Example 1 (the paint containing no aqueous dispersion of Examples 1 and 2 and Comparative Examples 1 to 3) was used as the blank, and the blank was used as the blank.
- the tensile strengths of the films formed from the clear paints containing the aqueous dispersions of Examples 1 and 2 and Comparative Examples 1 to 3 were compared. The results were evaluated according to the following criteria. A: The strength was 1.5 times larger than that of the blank. B: The strength was 1.0 to 1.5 times that of the blank.
- Example 3 Except that the monomer composition of the polymer having a 2-oxazoline group contained in the aqueous dispersion or the type or content of the additive (preservative or emulsifier) contained in the aqueous dispersion was changed as shown in Table 3, An aqueous dispersion was produced in the same manner as in Example 1, and various performance evaluations were performed. Table 3 shows the results. The abbreviations in Table 3 are as follows.
- Styrene BA butyl acrylate
- DVB divinylbenzene
- IPO 2-isopropenyl-2-oxazoline
- MMA methyl methacrylate
- BIT benzoisothiazoline (manufactured by Lonza Japan KK, trade name: Proxel GXL, benzoisothiazoline content: 20) mass%)
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Abstract
Description
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物を含有する水性分散体の製造方法であって、付加重合性オキサゾリンを含有する単量体混合物を、硫酸エステル化合物を含有する界面活性剤の存在下で乳化重合を行う重合体(A)の製造工程を備える。
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物を含有する。
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物と、カルボキシル基を有する重合体(B)とを含む。
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
2-オキサゾリン基を有する重合体としては、2-オキサゾリン基を有する構造単位を含有する重合体であれば制限はなく、2-オキサゾリン基を有する構造単位としては、1種のみが含まれていてもよく、2種以上が含まれていてもよい。また、当該重合体は、2-オキサゾリン基を有しないその他の構造単位を含有していてもよい。なお、以下、2-オキサゾリン基を有する重合体を重合体(A)とも呼ぶ。
重合体(A)の重量平均分子量としては、100000~5000000g/molであることが好ましく、300000~3000000g/molであることがより好ましい。重量平均分子量は、ゲル濾過クロマトグラフィー(GPC)により測定することができる。重量平均分子量は、例えば、以下の測定条件で測定する。
測定機器:HLC-8120GPC(商品名、東ソー社製)
分子量カラム:TSK-GEL GMHXL-Lと、TSK-GELG5000HXL(いずれも東ソー社製)とを直列に接続して使用
溶離液:テトラヒドロフラン(THF)
検量線用標準物質:ポリスチレン(東ソー社製)
測定方法:測定対象物を固形分が約0.2質量%となるようにTHFに溶解し、フィルターにてろ過したものを測定サンプルとして分子量を測定する。
また、重合体(A)を含む水性分散体の場合、水性分散体に含まれるエマルション粒子は、重合体(A)および界面活性剤を含むが、上記重合体(A)同士が、例えば架橋剤等により結合(架橋)された架橋体を有してもよい。重合体(A)が架橋体を有する場合、その重量平均分子量を測定することは困難であるため、重合体(A)の重量平均分子量の上限値は、特に限定されない。
上記計算式(1)により重合性単量体成分のガラス転移温度(Tg)を算出するのに使用する、代表的なホモポリマーのTg値を下記に示す。
メチルメタクリレート(MMA):105℃
スチレン(St):100℃
ブチルアクリレート(BA):-56℃
2-エチルヘキシルアクリレート(2EHA):-70℃
アクリル酸(AA):95℃
2-イソプロペニルー2-オキサゾリン:100℃
本実施形態の硫酸エステル化合物は、下記化学式(S)で表される。
R1-O-(R2O)nSO3X (S)
式中、R1は、炭素数8~20の脂肪族炭化水素基であり、直鎖又は分岐鎖の脂肪族炭化水素基であることが好ましい。また、R1としては、一般式CmH2m+1で表されるアルキル基であることが好ましく、mは、8~20であることが好ましく、10~18であることがより好ましく、10~16であることが更に好ましく、11~15であることがより更に好ましく、12~14であることが特に好ましい。具体的には、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、ノナデシル基、イコシル基等が挙げられる。また、R1は、一つ以上の不飽和二重結合を有する直鎖又は分岐鎖の脂肪族炭化水素基であってよく、一つの不飽和二重結合を有する直鎖又は分岐鎖の脂肪族炭化水素基であってよい。そのようなR1としては、具体的には、オレイル基等が挙げられる。
本開示の水性分散体は、重合体(A)および硫酸エステル化合物を含む。水性分散体における重合体(A)の含有量は水性分散体の総量に対して、1~80質量%であることが好ましく、5~60質量%であることがより好ましく、10~50質量%であることが更に好ましい。本開示の水性分散体は、効果を阻害しない範囲において、重合体(A)以外の成分を含むことができる。また、本開示の水性分散体における不揮発分の含有量は、水性分散体の総量に対して、1~80質量%であることが好ましく、5~60質量%であることがより好ましく、10~50質量%であることが更に好ましい。
重合体(A)を含む水性分散体は、付加重合性オキサゾリン(a)及び必要に応じて少なくとも1種の他の単量体(b)を、従来公知の重合法によって水性媒体中で重合を行うことにより製造することができる。より具体的には、本実施形態の水性分散体は、付加重合性オキサゾリンを含有する単量体混合物を、上記硫酸エステル化合物を含有する界面活性剤の存在下で乳化重合を行う工程(重合体(A)の製造工程)を備える製造方法によって製造できる。乳化重合は、界面活性剤を含む水溶液に単量体混合物を添加して得られたプレエマルションに対して行ってもよいし、界面活性剤を含む水溶液に単量体混合物を滴下しながら行ってもよい。上記硫酸エステル化合物を用いると、単量体混合物の乳化が容易であると共に、上記硫酸エステル化合物の存在下で乳化重合を行うと、重合中に生じる凝集物の量が少なく、安定して乳化重合が行える傾向にある。使用することができる水性媒体は、特に制限はないが、例示すれば、水;又は、水とメタノール、エタノール、プロパノール、イソプロパノール、ブタノール、ターシャリーブタノール、エチレングリコール、エチレングリコールモノメチルエーテル、エチレングリコールモノブチルエーテル、ジエチレングリコール、アセトン、メチルエチルケトン等の有機溶媒との混合溶液が挙げられる。
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物と、カルボキシル基を有する重合体(B)と、を含む。乾燥する際に加熱してもよく、100~140℃で5~60分の加熱乾燥を行ってもよい。乾燥する際の雰囲気としては、特に限定されないが、60~70%の相対湿度の雰囲気であってよい。
攪拌機、還流冷却器、窒素導入管、温度計及び滴下ロートを備えたフラスコに、脱イオン水782.4質量部及び表1に記載された界面活性剤18.7質量部〔2-オキサゾリン基を有する重合体を形成する単量体混合物の質量(該重合体の質量に相当)に対し、2.9質量%〕を仕込み、適量の28質量%アンモニア水でpH9.0に調整し、ゆるやかに窒素ガスを流しながら70℃に加熱した。そこへ過硫酸カリウムの5質量%水溶液64質量部を注入し、続いて予め調製しておいたアクリル酸ブチル288質量部、スチレン288質量部、2-イソプロペニル-2-オキサゾリン64質量部及びジビニルベンゼン6質量部からなる単量体混合物を3時間にわたって滴下しながら、重合反応を行った。反応中は窒素ガスを吹き込み続け、フラスコ内の温度を70±1℃に保った。滴下終了後も2時間同じ温度に保った後、内温を80℃に昇温させて1時間攪拌を続けて反応を完結させた。その後冷却し、300のメッシュの金網で濾過し、凝集物を分離し、pH8.0の2-オキサゾリン基を有する重合体の水性分散体を得た。不揮発分量を測定したところ、43.5質量%であった。重合体のガラス転移温度をFox式で見積もったところ、10℃であった。また、動的光散乱法による粒度分布測定器(Particle Sizing Systems社製「NICOMP Model 380」)を用い、水性分散体に含まれるエマルション粒子の平均粒子径(体積平均粒子径)を測定した。結果を表1に示す。
<比較例3(2-オキサゾリン基を有する重合体の製造)>
表1に記載された界面活性剤25.8質量部〔2-オキサゾリン基を有する重合体を形成する単量体混合物の質量(該重合体の質量に相当)に対し、4.0質量%〕を仕込む以外は、実施例1と同様の方法で製造した。不揮発分量を測定したところ、43.5質量%であった。重合体のガラス転移温度をFox式で見積もったところ、10℃であった。また、動的光散乱法による粒度分布測定器(Particle Sizing Systems社製「NICOMP Model 380」)を用い、水性分散体に含まれるエマルション粒子の平均粒子径(体積平均粒子径)を測定した。結果を表1に示す。
得られた各水性分散体に対して、以下の条件でマロン機械的安定性試験を行った。試験機としては、株式会社安田精機製作所製、商品名:「No.156マロン機械的安定度試験機」を使用した。試験後、100メッシュの金網により試料を濾過し、回収された凝集物の質量を測定した。試験に使用した試料の量に対する得られた凝集物の質量を計算し、凝集率を求めた。結果を表1に示す。凝集率が小さいほど機械的安定性に優れている。
(試験条件)
サンプル量:70g
負荷 :10kg
回転数 :1000rpm
試験時間 :10分
フラスコに、脱イオン水782.4質量部及び実施例1、2、及び比較例1~3で使用した各界面活性剤を一定量(脱イオン水及び単量体混合物の総量に対して3質量%)添加した水溶液を用意した。当該水溶液に、上記単量体混合物と同じ組成の単量体混合物を添加した際の乳化しやすさを以下の基準で評価した。
A:単量体混合物を一括して添加し、回転数300rpmで15分攪拌して乳化できた。
B:単量体混合物を一括して添加すると乳化できないが、単量体混合物を10回に分けて添加し、添加するごとに回転数300rpmで15分攪拌した場合であれば、乳化可能であった。
C:乳化できなかった。
乳化重合の直後に分離した凝集物の質量を測定し、水性分散体の総量に対する割合(%)を算出し、以下の基準で評価した。結果を表1に示す。
A:凝集物量が0.2%未満
B:凝集物量が0.2~1.0%
C:凝集物量が1.0%より大きい
LA-10:第一工業製薬株式会社製、商品名「ハイテノール LA-10」、化学式(S)において、R1:ラウリル、R2:エチレン、n=4、X:NH4の化合物。
08E :第一工業製薬株式会社製、商品名「ハイテノール 08E」、化学式(S)において、R1:オレイル、R2:エチレン、n=8、X:NH4の化合物。
LA-16:第一工業製薬株式会社製、商品名「ハイテノール LA-16」、化学式(S)において、R1:ドデシル、R2:エチレン、n=16、X:NH4の化合物。
E-1000A:花王株式会社製、商品名「ラムテル E-1000A」、下記化学式の多環芳香族化合物。
攪拌機、還流冷却器、窒素導入管、温度計及び滴下ロートを備えたフラスコに、脱イオン水376.5質量部及びハイテノールN-08(第一工業製薬株式会社製、ポリオキシエチレンノニルフェニルエーテル硫酸アンモニウム塩の15質量%水溶液)70.8質量部を仕込み、ゆるやかに窒素ガスを流しながら80℃に加熱した。予め調製しておいたアクリル酸2-エチルヘキシル131質量部、スチレン205質量部及びアクリル酸17質量部からなる単量体混合物の5質量%をフラスコに仕込み、続いて過硫酸カリウムの5質量%水溶液21質量部を注入し重合を開始した。10分後に残りの単量体混合物を3時間にわたって滴下した。反応中は窒素ガスを吹き込み続け、フラスコ内の温度を80±1℃に保った。滴下終了後も1時間同じ温度に保った後、冷却し、25質量%アンモニア水9質量部でpH8.5に調整し、不揮発分44.1質量%、pH8.5のアクリルエマルションを(重合体(B))得た。
各クリア塗料を、温度が23±2℃で、相対湿度が65±3%である雰囲気中でガラス板(縦:15cm、横:7cm)上に乾燥後の膜厚が150μmになるようにアプリケーターを用いて塗布した。このガラス板をこの雰囲気中で2分間放置し、次いで120℃の温度で30分間加熱した後、放冷することにより、塗膜が形成されたガラス板を作製した。
上記塗膜を、メチルエチルケトンを含ませた脱脂綿で50往復して擦った後(ラビング試験)、その塗膜の状態を目視で観察し、以下の評価基準に基づいて評価した。なお、塗膜に変化がないほど架橋性が良好である。
A:塗膜に変化が認められない。
B:塗膜の一部に溶解が認められる。
C:塗膜全体に溶解が認められる。
耐溶剤性試験と同様にして塗膜が形成されたガラス板を作製した。この塗膜が形成されたガラス板の塗膜上に直径30mm、長さ30mmのガラス管の開口部を載せて接着させた後、ガラス管の内部にある塗膜が水と接触するようにイオン交換水10mLをガラス管内に注いだ状態で、温度が23±2℃で、相対湿度が65±3%である雰囲気中に24時間放置した。その後、イオン交換水と接触している塗膜の状態を目視で観察し、以下の評価基準に基づいて評価した。なお、試験開始前の塗膜と比較して試験後の塗膜に変化が小さいほど架橋性が良好である。
(評価基準)
A:塗膜に変化が認められない。
B:塗膜の一部にやや白濁が認められる。
C:塗膜全体に白化が認められる。
耐溶剤性試験で用いた塗膜が形成されたガラス板から、カッターの刃で塗膜を剥ぎ取り、その剥ぎ取った塗膜(遊離フィルム)を強度測定用フィルムとした。強度測定用フィルムを恒温恒湿室(温度25℃、湿度60%RH)で24時間保存した。その後、引っ張り試験機〔株式会社島津製作所製、商品名:オートグラフAGS-100D〕のチャックに掴持し、JIS P-8113に準拠して引っ張り試験し、強度測定用フィルムの引張強度を測定した。製造例1で製造したアクリルエマルションのクリア塗料(実施例1、2及び比較例1~3の水性分散体を配合していない塗料)から形成したフィルムの引張強度をブランクとし、そのブランクと実施例1、2及び比較例1~3の水性分散体を配合した各クリア塗料から形成したフィルムとの引張強度を比較した。結果を以下の基準で評価した。
A:ブランクと比較して強度が1.5倍より大きくなった。
B:ブランクと比較して強度が1.0~1.5倍であった。
水性分散体に含まれる2-オキサゾリン基を有する重合体のモノマー組成、又は水性分散体に含まれる添加剤(防腐剤若しくは乳化剤)の種類若しくは含有量を表3に示すとおりに変更した以外は、実施例1と同様に水性分散体を製造し、各種性能評価を行った。結果を表3に示す。なお、表3における略号は、以下のとおりである。
ST:スチレン
BA:アクリル酸ブチル
DVB:ジビニルベンゼン
IPO:2-イソプロペニル-2-オキサゾリン
MMA:メチルメタクリレート
BIT:ベンゾイソチアゾリン(ロンザジャパン株式会社製、商品名:Proxel GXL、ベンゾイソチアゾリンの含有量:20質量%)
Claims (11)
- 2-オキサゾリン基を有する重合体(A)と、
界面活性剤と、を含み、
前記界面活性剤が、以下の化学式(S)で表される硫酸エステル化合物を含有する、水性分散体。
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。) - 前記水性分散体に含まれる界面活性剤の総量に対する前記硫酸エステル化合物の割合が50~100質量%である、請求項1に記載の水性分散体。
- イソチアゾリン系化合物を更に含む、請求項1又は2に記載の水性分散体。
- 前記重合体(A)の総量に対して、10~5000質量ppmの前記イソチアゾリン系化合物を含む、請求項3に記載の水性分散体。
- 前記イソチアゾリン系化合物がベンゾイソチアゾリンを含む、請求項3又は4に記載の水性分散体。
- 前記重合体(A)の総量に対して0.5質量%以上の前記硫酸エステル化合物を含む、請求項1~5のいずれか一項に記載の水性分散体。
- 前記重合体(A)は、当該重合体の総質量に対して、オキサゾリン基を有する構造単位を0.5~50質量%含む、請求項1~6のいずれか一項に記載の水性分散体。
- 前記重合体(A)は、当該重合体の総質量に対して、オキサゾリン基を有する構造単位を5~40質量%含む、請求項7に記載の水性分散体。
- 2-オキサゾリン基を有する重合体(A)と、界面活性剤と、を含み、
前記界面活性剤が、以下の化学式(S);
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物を含有する水性分散体の製造方法であって、
付加重合性オキサゾリンを含有する単量体混合物を、前記硫酸エステル化合物を含有する界面活性剤の存在下で乳化重合を行う、重合体(A)の製造工程を備える、水性分散体の製造方法。 - 水性分散体及びカルボキシル基を有する重合体(B)を含み、
前記水性分散体が、
2-オキサゾリン基を有する重合体(A)と、
界面活性剤と、を含み、
前記界面活性剤が、以下の化学式(S);
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物を含有する、塗料組成物。 - 2-オキサゾリン基を有する重合体(A)と、
化学式(S);
R1-O-(R2O)nSO3X (S)
(式中、R1は炭素数8~20の脂肪族炭化水素基であり、R2は炭素数2~4のアルキレン基であり、nは2~15であり、Xは、一価のカチオンを表す。)
で表される硫酸エステル化合物と、
カルボキシル基を有する重合体(B)と、を含む、塗膜。
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| JP2006124640A (ja) * | 2004-09-29 | 2006-05-18 | Nippon Shokubai Co Ltd | 粘着剤組成物 |
| US7759442B2 (en) * | 2005-01-26 | 2010-07-20 | Nitto Denko Corporation | Adhesive composition, adhesive optical film and image display device |
| US7641946B2 (en) | 2005-08-08 | 2010-01-05 | Nitto Denko Corporation | Adhesive film and image display device |
| JP5424184B2 (ja) | 2007-10-11 | 2014-02-26 | 関西ペイント株式会社 | 水性塗料組成物 |
| JP5607337B2 (ja) | 2009-10-27 | 2014-10-15 | リンテック株式会社 | 水分散型アクリル系粘着剤組成物、粘着シート及びその製造方法 |
| JP5631082B2 (ja) | 2010-07-07 | 2014-11-26 | 日東電工株式会社 | 活性エネルギー線硬化型再剥離用粘着剤 |
| TW201207070A (en) * | 2010-07-05 | 2012-02-16 | Nitto Denko Corp | Active energy ray-curable pressure-sensitive adhesive for re-release and dicing die-bonding film |
| JP2012126085A (ja) * | 2010-12-17 | 2012-07-05 | Oji Paper Co Ltd | インクジェット記録用シートの製造方法 |
| JP6027856B2 (ja) | 2012-11-12 | 2016-11-16 | リンテック株式会社 | 水分散型粘着剤組成物、再剥離性粘着シートの製造方法、及び再剥離性粘着シート |
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| EP3835368A4 (en) * | 2018-08-06 | 2022-05-18 | Nippon Shokubai Co., Ltd. | AQUEOUS DISPERSION, METHOD OF PRODUCTION, COATING COMPOSITION AND COATING FILM |
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2019
- 2019-08-06 EP EP19847298.7A patent/EP3835368A4/en active Pending
- 2019-08-06 CN CN201980051547.5A patent/CN112543792A/zh active Pending
- 2019-08-06 TW TW108127953A patent/TW202017955A/zh unknown
- 2019-08-06 KR KR1020217006535A patent/KR102520999B1/ko active Active
- 2019-08-06 JP JP2020535811A patent/JP7129481B2/ja active Active
- 2019-08-06 WO PCT/JP2019/030988 patent/WO2020032063A1/ja not_active Ceased
- 2019-08-06 US US17/265,598 patent/US12473456B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112543792A (zh) | 2021-03-23 |
| JPWO2020032063A1 (ja) | 2021-08-10 |
| KR20210041030A (ko) | 2021-04-14 |
| KR102520999B1 (ko) | 2023-04-13 |
| EP3835368A1 (en) | 2021-06-16 |
| JP7129481B2 (ja) | 2022-09-01 |
| EP3835368A4 (en) | 2022-05-18 |
| US12473456B2 (en) | 2025-11-18 |
| US20220275152A1 (en) | 2022-09-01 |
| TW202017955A (zh) | 2020-05-16 |
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