Abstract: A rheology control agent for water-based resins may include: 1 mass % or more and 30 mass % or less of an active matter (X) containing a diamide compound (A) and/or a hydrogenated castor oil (A?), the diamide compound (A) being obtained by reacting a diamine component (A1) selected from the group consisting of diamines having 2 to 12 carbon atoms with a monocarboxylic acid component (A2) selected from the group consisting of monocarboxylic acids having at least a hydroxyl group; and 5 mass % or more and 99 mass % or less of a first solvent (C) having at least one substituent selected from the group consisting of a hydroxyl group, an ether group, an ester group, an amide group and a ketone group.

Abstract: A rheology control agent for a curable composition may include: a diamide compound (A) and/or a hydrogenated castor oil (A?), the diamide compound (A) being obtained by condensation reaction between a diamine component (A1) and a monocarboxylic acid component (A2); and a polyamide compound (B) obtained by polycondensation of an amine component (B1) and a carboxylic acid component (B2). The diamine component (A1) may be selected from the group consisting of diamines with 2 to 12 carbon atoms. The monocarboxylic acid component (A2) may be selected from the group consisting of hydrogenated castor oil fatty acids and linear saturated fatty acids. The polyamide compound (B) may have a weight-average molecular weight from 2,000 to 21,000. A cured product of the curable composition may be used for a sealant or an adhesive.

Abstract: [Problem] To provide a surface control agent for a water-based coating, the surface control agent having both cissing prevention properties and overcoatability when used for applications requiring excellent appearance and overcoatability. [Solution] The surface control agent for a water-based coating includes: a copolymer containing, as constituent monomers, a dibasic acid ester (A) having a polymerizable unsaturated double bond in an amount of 10% by mass or more and 99% by mass or less, and an ether group-containing polymerizable unsaturated monomer (B) having a (meth)acryloyl group, a vinyl ether group, or an allyl group in an amount of 1% by mass or more and 90% by mass or less, wherein the copolymer has a weight-average molecular weight of 1,000 or more and 100,000 or less.

Abstract: An anti-settling agent composition for aqueous coating materials, comprising [A] a polyamide which is obtained by polymerizing a diamine having 2-12 carbon atoms and an excess amount, relative to diamine, of either a dicarboxylic acid having 4-36 carbon atoms or a mixture of a dicarboxylic acid having 4-36 carbon atoms and a monocarboxylic acid having 2-22 carbon atoms, and [B] a hydrophobic organic compound which is a hydrocarbon modified with 1-3 hydroxyl groups and/or carboxyl groups and having 10-54 carbon atoms, and which has a freezing point of 20° C. or less or does not have a definite freezing point. The anti-settling agent is able to be easily dispersed in a coating material even if directly added into the coating material without being diluted when added into the coating material, and which imparts the coating material with excellent anti-settling properties.

Abstract: A rheology control agent for a curable composition includes: a diamide compound (A) and/or a hydrogenated castor oil (A?), the diamide compound (A) being obtained by condensation reaction between a diamine component (A1) and a monocarboxylic acid component (A2); and a polyamide compound (B) obtained by polycondensation of an amine component (B1) and a carboxylic acid component (B2). The amine component (B1) contains at least one amine selected from the group consisting of a diamine and a triamine having 2 to 54 carbon atoms. The carboxylic acid component (B2) contains at least one carboxylic acid selected from the group consisting of a dicarboxylic acid and a tricarboxylic acid having 4 to 54 carbon atoms. The polyamide compound (B) is obtained by polycondensation of at least one of the amine component (B1) and the carboxylic acid component (B2) containing polymerized fatty acids.

Abstract: [Problem] To provide a surface control agent for a water-based coating, the surface control agent having both cissing prevention properties and overcoatability when used for applications requiring excellent appearance and overcoatability. [Solution] The surface control agent for a water-based coating includes: a copolymer containing, as constituent monomers, a dibasic acid ester (A) having a polymerizable unsaturated double bond in an amount of 10% by mass or more and 99% by mass or less, and an ether group-containing polymerizable unsaturated monomer (B) having a (meth)acryloyl group, a vinyl ether group, or an allyl group in an amount of 1% by mass or more and 90% by mass or less, wherein the copolymer has a weight-average molecular weight of 1,000 or more and 100,000 or less.

Abstract: An anti-settling agent composition for aqueous coating materials, comprising [A] a polyamide which is obtained by polymerizing a diamine having 2-12 carbon atoms and an excess amount, relative to diamine, of either a dicarboxylic acid having 4-36 carbon atoms or a mixture of a dicarboxylic acid having 4-36 carbon atoms and a monocarboxylic acid having 2-22 carbon atoms, and [B] a hydrophobic organic compound which is a hydrocarbon modified with 1-3 hydroxyl groups and/or carboxyl groups and having 10-54 carbon atoms, and which has a freezing point of 20° C. or less or does not have a definite freezing point. The anti-settling agent is able to be easily dispersed in a coating material even if directly added into the coating material without being diluted when added into the coating material, and which imparts the coating material with excellent anti-settling properties.

Abstract: Provided is a novel layer migration control agent that is added to a paint composition when forming a multilayer coating film on a coating object by curing a prime coating film and a top coating film at the same time, the agent making it possible to control layer migration of the two coating films and obtain the multilayer coating film with satisfactory finish appearance. The layer migration control agent is a copolymer obtained by copolymerization of a monomer mixture including 5% by weight to 90% by weight of a polymerizable unsaturated monomer including an ether group and 10% by weight to 95% by weight of a polymerizable unsaturated monomer having a hydrophobic group having 1 to 22 carbon atoms, the copolymer having a weight average molecular weight of 1000 to 100,000.

Abstract: An object of the present invention is to provide a readily thermally degradable resin binder that is an organic resin binder for use as a binder component in a high-concentration inorganic microparticle dispersion, and that enables firing in a firing process to be carried out at lower temperatures and can inhibit the production of carbon residues, while maintaining the printing characteristics. This object can be achieved by a mixture formed of a specific (meth)acrylic resin and an ethyl cellulose resin in a weight ratio of 5:95 to 50:50. This specific (meth)acrylic resin is a (meth)acrylic polymer having a weight-average molecular weight of 1,000 to 250,000 and having a monomer unit given by the following general formula (1) [in the formula, R1 represents hydrogen or a methyl group and R2 represents hydrogen or a C1-12 straight-chain hydrocarbon group, branched-chain hydrocarbon group or hydroxyl group-bearing hydrocarbon group, or a polyalkylene oxide-containing group].

Abstract: Provided is the so-called agent imparting the distinctness of image, namely, an additive for an aqueous coating material that can improve the distinctness of image of the coating film of any glossy aqueous coating material in order to prevent the white blurring phenomenon, which is caused by diffuse reflection of light, to a degree that could not be previously achieved, by increasing the dispersivity of a carbon black or an organic pigment in a coating material resin. Catecholic polymer black microparticles that exhibit an angle-independent structural color are used as the agent imparting the distinctness of image.

Abstract: Provided is a novel layer migration control agent that is added to a paint composition when forming a multilayer coating film on a coating object by curing a prime coating film and a top coating film at the same time, the agent making it possible to control layer migration of the two coating films and obtain the multilayer coating film with satisfactory finish appearance. The layer migration control agent is a copolymer obtained by copolymerization of a monomer mixture including 5% by weight to 90% by weight of a polymerizable unsaturated monomer including an ether group and 10% by weight to 95% by weight of a polymerizable unsaturated monomer having a hydrophobic group having 1 to 22 carbon atoms, the copolymer having a weight average molecular weight of 1000 to 100,000.

Abstract: An adhesion improver for amine curing epoxy resin paint which, when added in a small amount to amine curing epoxy resin paint, is capable of preventing the inhibition of adhesion caused by amine blushing and of giving good interlayer adhesion is provided. This adhesion improver is a composition which contains a polymer obtained by the polymerization of (A) acrylic acid ester and/or methacrylic acid ester which has a formula as follows: wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes a branched alkyl group having 3 to 18 carbon atoms, and (B) acrylic acid ester other than (A) above and/or methacrylic acid ester other than (A) above and/or vinyl ether.

Abstract: Provided is the so-called agent imparting the distinctness of image, namely, an additive for an aqueous coating material that can improve the distinctness of image of the coating film of any glossy aqueous coating material in order to prevent the white blurring phenomenon, which is caused by diffuse reflection of light, to a degree that could not be previously achieved, by increasing the dispersivity of a carbon black or an organic pigment in a coating material resin. Catecholic polymer black microparticles that exhibit an angle-independent structural color are used as the agent imparting the distinctness of image.

Abstract: This invention provides a viscosity modifier for high concentration dispersion of inorganic fine particles which can reduce, by giving excellent viscosity modifying function to a high concentration dispersion of inorganic fine particles (e.g., printing ink composition, functional paste composition or paint composition, of high concentration dispersion of inorganic fine particles), the occurrence of inconvenience in a printing step or coating step for the manufacture of components or substrates, and also provides a high concentration dispersion of inorganic fine particles which contains said viscosity modifier.

Abstract: An object of the present invention is to provide a readily thermally degradable resin binder that is an organic resin binder for use as a binder component in a high-concentration inorganic microparticle dispersion, and that enables firing in a firing process to be carried out at lower temperatures and can inhibit the production of carbon residues, while maintaining the printing characteristics. This object can be achieved by a mixture formed of a specific (meth)acrylic resin and an ethyl cellulose resin in a weight ratio of 5:95 to 50:50. This specific (meth)acrylic resin is a (meth)acrylic polymer having a weight-average molecular weight of 1,000 to 250,000 and having a monomer unit given by the following general formula (1) [in the formula, R1 represents hydrogen or a methyl group and R2 represents hydrogen or a C1-12 straight-chain hydrocarbon group, branched-chain hydrocarbon group or hydroxyl group-bearing hydrocarbon group, or a polyalkylene oxide-containing group].

Abstract: This invention provides a viscosity modifier for high concentration dispersion of inorganic fine particles which can reduce, by giving excellent viscosity modifying function to a high concentration dispersion of inorganic fine particles (e.g., printing ink composition, functional paste composition or paint composition, of high concentration dispersion of inorganic fine particles), the occurrence of inconvenience in a printing step or coating step for the manufacture of components or substrates, and also provides a high concentration dispersion of inorganic fine particles which contains said viscosity modifier.

Abstract: The invention provides an aqueous pigment anti-settling agent which, when added to an aqueous coating material, demonstrates excellent pigment anti-settling effect, and in particular, demonstrates excellent pigment anti-settling effect even under a high-temperature environment.

Abstract: An adhesion improver for amine curing epoxy resin paint which, when added in a small amount to amine curing epoxy resin paint, is capable of preventing the inhibition of adhesion caused by amine blushing and of giving good interlayer adhesion is provided. This adhesion improver is a composition which contains a polymer obtained by the polymerization of (A) acrylic acid ester and/or methacrylic acid ester which has a formula as follows: wherein R1 denotes a hydrogen atom or a methyl group, and R2 denotes a branched alkyl group having 3 to 18 carbon atoms, and (B) acrylic acid ester other than (A) above and/or methacrylic acid ester other than (A) above and/or vinyl ether.

Abstract: A defoaming agent which can effectively eliminate foams generated in the occasions of preparation, coating, drying and baking of water-based paint, by addition thereof by itself, without combined use of other kind(s) of defoaming agent(s), and furthermore without impairing appearance of baked coated film of the paint or recoatability of the paint is provided. Such a defoaming agent for water-based paint has the composition comprising (1) polyoxyethylene hydrogenated castor oil triisostearates and (2) polyalkyl vinyl ether, polybutadiene, polybutene or polyisoprene, which are dissolved in (3) liquid normal paraffin, liquid isoparaffin or liquid cycloparaffin, at such a ratio that the blended amount of (1) occupies 2-90% by weight of the total composition.

Abstract: The invention provides novel defoamers which are useful as defoamers for top coat paints for motor vehicles. When the defoamers are incorporated with paints which do not use melamine resins as the curing agent, they can impart defoaming property to the paints without inviting turbidity in the painted films caused by infiltration of water. Hence the defoamers are particularly useful when used for baking finish type clear top coat paints for motor vehicles. The defoamer is characterized by comprising a copolymer of 2-50% by weight of (A) a polymerizable monomer capable of forming a copolymer having isocyanate groups which can react with a binder resin in thermosetting type paint or (b) a polymerizable monomer capable of forming a copolymer having the groups which produce isocyanate groups reactable with a binder resin in thermosetting type paint during the baking step of the same paint, and 98-50% by weight of (C) a monomer or polymer conventionally used for defoamers.