PAINTING COMPOSITION.

Abstract

A paint composition contains (A) a binder component, (B) a first rheology control agent and (C) a second rheology control agent, wherein the first rheology control agent (B) contains a reaction product of (b1) a polyisocyanate compound, (b2) a primary monoamine having a number-average molecular weight of 300 or less, and (b3) a polyetheramine having a number-average molecular weight of more than 300 and less than 6000; the proportion of polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) is 0.5% by mass or more and less than 10% by mass based on the total amount of components (b1) to (b3); the second rheology control agent (C) contains a reaction product of (c1) a polyisocyanate compound, (c2) a primary monoamine having a number-average molecular weight of 300 or less, and (c3) a polyetheramine having two or more amino groups and having a number-average molecular weight of 1000 or more and less than 6000; and the proportion of the polyetheramine having two or more amino groups and having a number-average molecular weight of 1000 or more and less than 6000 (c3) is within a range of 10 to 30% by mass based on the total amount of components (c1) to (c3).

Description

PAINTING COMPOSITION TECHNICAL FIELD OF THE INVENTION The present invention relates to a paint composition. BACKGROUND OF THE INVENTION To impart excellent appearance and properties to a substrate, a coating film is conventionally formed over the substrate by applying a paint composition to the substrate to form a wet coating film and curing the wet coating film. However, when the substrate has a vertical plane, the wet coating film on that plane buckles, resulting in a poor appearance. To address this issue, a paint composition containing a rheology control agent (rheology controller) with buckling control capabilities has been investigated. For example, PTL 1 describes a paint composition containing a binder component and a rheology control agent; and the rheology control agent for use contains a reaction product of a polyisocyanate compound, a primary monoamine having a number-average molecular weight of 300 or less, and a polyetheramine having a number-average molecular weight of more than 300 and less than 6000. List of appointments Patent literature PTL 1: WO2018 / 012552A BRIEF DESCRIPTION OF THE INVENTION Technical problem The coating film formed from the paint composition described in PTL 1 is excellent in transparency, water resistance, and finished appearance. However, there is room for further improvement in sagging resistance during coating, final appearance, and water reddening resistance of the resulting coating film. The present invention was made in view of the current state mentioned above. ri QRnn / ιζηζ / E / γίΛΐ An object of the present invention is to provide a paint composition excellent in sagging resistance during coating and finished appearance and resistance to flushing with water, hereinafter referred to as water flushing resistance, of the resulting coating film. Solution to the problem The present inventors carried out extensive research to achieve the objective and found that a paint composition containing a first predetermined rheology control agent and a second predetermined rheology control agent in combination can achieve the objective. Specifically, the present invention includes the following subject matter. In one embodiment, a paint composition is provided comprising (A) a binder component, (B) a first rheology control agent, and (C) a second rheology control agent, wherein the first rheology control agent (B) contains a reaction product of (b1) a polyisocyanate compound, (b2) a primary monoamine having a number-average molecular weight of 300 or less, and (b3) a polyetheramine having a number-average molecular weight of more than 300 and less than 6000, the proportion of polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) being 0.5% by mass or more and less than 10% by mass based on the total amount of components (b1) to (b3), the second rheology control agent (C) contains a reaction product of (e1) a polyisocyanate compound, (c2) a primary monoamine having a number average molecular weight of 300 or less, and (c3) a polyetheramine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000, the proportion of polyetheramine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) is within a range of 10 to 30% by mass based on the total amount of components (e1) to (c3). In another form, the polyether amine that has two or more amino groups and has a number average molecular weight of 1000 or more and less than 6000 (c3) has three or more amino groups. In another embodiment, the proportion of polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) is more than ri QRnn / ιζηζ / E / γίΛΐ 15% by mass and 30% by mass or less based on the total amount of components (el) to (c3). In another embodiment, the binding component (A) contains a resin containing hydroxyl (Al) and a crosslinking agent (A2). In another embodiment, the content of the first rheology control agent (B) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binding component (A), and the content of the second rheology control agent (C) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binding component (A). Advantageous effects of the invention The paint composition of the present invention forms a coating film that is excellent in terms of sagging resistance during coating, and in terms of finished appearance and resistance to water reddening of the resulting coating film. DETAILED DESCRIPTION OF THE INVENTION The paint composition of the present invention is described in more detail below. Binding component (A) The binder component (A) itself has film-forming properties. The binder component (A) may be non-crosslinkable or crosslinkable; in particular, the binder component (A) is preferably crosslinkable. A known film-forming resin that has been used as a binder component for paint may be used as the binder component (A). Examples of film-forming resins include acrylic resins, polyester resins, alkyd resins, polyurethane resins, and similar compounds. Film-forming resins preferably contain a crosslinkable functional group, such as hydroxy, carboxy, or epoxy. In addition to the film-forming resin, a crosslinking agent can also be used as the binder component (A). When a crosslinking agent is used as part of the binder component (A), a resin (a base resin) containing a crosslinkable functional group, such as hydroxy, carboxy, or epoxy, and capable of forming a crosslinked coating film by reaction with the crosslinking agent, can generally be used as the film-forming resin. From the standpoint of, for example, the water resistance of the resulting coating film, the paint composition of the present invention is preferably a RI QRnn / I 7Π7 / Β / ΥΙΛΙ crosslinkable paint containing the base resin and the crosslinking agent. In particular, the paint composition of the present invention preferably contains a resin containing hydroxyl (Al) as at least a part of the base resin, and a crosslinking agent (A2) reactive with the resin containing hydroxyl as at least a part of the crosslinking agent. Resin containing hydroxy (Al) A resin containing hydroxy(Al) is a resin that has at least one hydroxy group per molecule. Various resins can be referred to as containing hydroxy(Al) resins. Examples include acrylic resins containing hydroxy, polyester resins containing hydroxy, acrylic-modified polyester resins containing hydroxy, polyether resins containing hydroxy, polycarbonate resins containing hydroxy, polyurethane resins containing hydroxy, epoxy resins containing hydroxy, alkyd resins containing hydroxy, and similar resins. These can be used alone or in combination. In particular, from the standpoint of, for example, the water resistance of the resulting coating film, a resin containing hydroxy(Al) is preferably an acrylic resin containing hydroxy(Al-1). Acrylic resin containing hydroxy (Al-1) The acrylic resin containing hydroxyl (Al-1) can be obtained, for example, by copolymerizing a polymerizable unsaturated monomer containing hydroxyl and another polymerizable unsaturated monomer (a polymerizable unsaturated monomer other than the polymerizable unsaturated monomer containing hydroxyl). A polymerizable unsaturated monomer containing hydroxyl is a compound that contains one or more hydroxyl groups and one or more polymerizable unsaturated bonds per molecule. Examples of polymerizable unsaturated monomers containing hydroxyl include monoesterified products of (meth)acrylic acid with a dihydric alcohol having 2 to 8 carbon atoms (e.g., 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate); ε-caprolactone-modified products of such monoesterified products of (meth)acrylic acid with a dihydric alcohol having 2 to 8 carbon atoms; and adducts of (meth)acrylic acid with an epoxy-containing compound (e.g., Cardura E10P, trade name, produced by Momentive Specialty Chemicals Inc.)., glycidyl ester of neodecanoic acid); N-hydroxymethyl (meth)acrylamide; allyl alcohol; (meth)acrylates including a polyoxyethylene chain terminated in hydroxy; and the like. As another polymerizable unsaturated monomer copolymerizable with the polymerizable unsaturated monomer containing hydroxyl, for example, the monomers ri QRnn / ιζηζ / E / γίΛΐ listed in (1) to (6) below can be used. These polymerizable unsaturated monomers can be used individually or in a combination of two or more. (1) Polymerizable unsaturated monomers containing acid groups A polymerizable unsaturated monomer containing an acid group is a compound that has one or more acid groups and one or more polymerizable unsaturated bonds per molecule. Examples of such monomers include carboxylic acid monomers, such as (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid, and maleic anhydride; sulfonic acid monomers, such as vinylsulfonic acid and 2-sulfoethyl (meth)acrylate; and acid phosphate monomers, such as 2-(meth)acryloyloxyethyl acid phosphate, 2-(meth)acryloyloxypropyl acid phosphate, 2-(meth)acryloyloxy-3-chloropropyl acid phosphate, and 2-methacryloyloxyethylphenyl phosphoric acid. These monomers can be used individually or in combinations of two or more. When using a polymerizable unsaturated monomer containing an acid group, the monomer is preferably used in an amount such that the acrylic resin containing hydroxy(Al-1) has an acidity value of 0.5 to 15 mg of KOH / g more preferably 1 to 10 mg of KOH / g. (2) Esterified products of acrylic acid or methacrylic acid with a monohydric alcohol having from 1 to 20 carbon atoms. Specific examples include methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, iso-butyl(meth)acrylate, tert-butyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, isooctyl (meth)acrylate, isomyristyl (meth)acrylate, stearyl (meth)acrylate, isostearyl acrylate (trade name, produced by Osaka Organic Chemical Industry, Ltd.), lauryl (meth)acrylate, tridecyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, and the like. (3) Aromatic vinyl monomers Specific examples include styrene, α-methylstyrene, vinyltoluene, and similar substances. When an aromatic vinyl monomer is used as a constituent component, the glass transition temperature of the resulting resin is raised, and a hydrophobic coating film with a high refractive index can be obtained. This provides an enhanced finish due to the increased gloss of the coating film. When an aromatic vinyl monomer is used as a constituent component, its proportion is preferably within the range of 3 to 50% by mass, and in particular more preferably 5 to 40% by mass, based on the total amount of the monomer components. ri QRnn / ιζηζ / Ε / γίΛΐ (4) Polymerizable unsaturated monomers containing glycidyl groups A polymerizable unsaturated monomer containing a glycidyl group is a compound that has one or more glycidyl groups and one or more polymerizable unsaturated bonds per molecule. Specific examples include glycidyl acrylate, glycidyl methacrylate, and similar compounds. (5) Compounds containing nitrogen and a polymerizable unsaturated bond Examples include (meth)acrylamide, N,N-dimethyl(meth)acrylamide, N-[3(dimethylamino)propyl](meth)acrylamide, N-butoxymethyl(meth)acrylamide, diacetone(meth)acrylamide, N,N-dimethylaminoethyl (meth)acrylate, vinylpyridine, vinylimidazole, acrylonitrile, methacrylonitrile, and the like. (6) Other vinyl compounds Examples include vinyl acetate, vinyl propionate, vinyl chloride, vinyl versatas, and similar compounds. Examples of vinyl versatas include the commercially available products VEOVA 9 and VEOVA 10 (trade names, produced by Japan Epoxy Resin Co., Ltd.) and similar products. Like other polymerizable unsaturated monomers, those listed in (1) to (6) above can be used individually or in a combination of two or more. The term polymerizable unsaturated monomer, as used in this document, refers to a monomer that has one or more (for example, one to four) polymerizable unsaturated groups. A polymerizable unsaturated group is an unsaturated group that can undergo free-radical polymerization. Examples of polymerizable unsaturated groups include a vinyl group, a (meth)acryloyl group, a (meth)acrylamide group, a vinyl ether group, an allyl group, a propenyl group, an isopropenyl group, a maleimide group, and the like. The term (meth)acrylate, as used in this document, means acrylate or methacrylate. The term (meth)acrylic acid means acrylic acid or methacrylic acid. The term (meth)acryloyl means acryloyl or methacryloyl. The term (meth)acrylamide means acrylamide or methacrylamide. From the point of view of curability and water resistance, the acrylic resin containing hydroxy (Al-1) preferably has a hydroxy value of 70 to 200 mg KOH / g, more preferably 80 to 185 mg KOH / g and even more preferably 100 to 170 mg KOH / g. From the point of view of the final appearance and curability of the coating film, the acrylic resin containing hydroxy (Al-1) preferably has a weight average molecular weight of 2000 to 50000, more preferably 3000 to 30000, and even higher RI QRnn / I 7Π7 / Β / ΥΙΛΙ preferably 4000 to 10000. In this specification, the average molecular weight refers to a value calculated from a chromatogram measured by gel permeation chromatography based on the molecular weight of standard polystyrene. For gel permeation chromatography, HLC8120GPC (produced by Tosoh Corporation) was used. The measurement was carried out using four columns: TSKgel G-4000HXL, TSKgel G-3000HXL, TSKgel G-2500HXL, and TSKgel G-2000HXL (trade names, all produced by Tosoh Corporation) under the following conditions: mobile phase: tetrahydrofuran; measurement temperature: 40°C; flow rate: 1 cc / min; and detector: RI. The glass transition temperature of the acrylic resin containing hydroxy(Al-1) is preferably within the range of -50 to 60°C, more preferably 10 to 50°C, and even more preferably 20 to 45°C, from the point of view of the hardness and finished appearance of the coating film. In this specification, the glass transition temperature (°C) of the acrylic resin was calculated using the following formulas. 1 / Tg (K) = (Wl / Tl) + (W2 / T2) +.....(1) Tg (°C) = Tg (K) - 273 (2) In each formula, Wl, W2, ... represent the mass fractions of the monomers used for copolymerization, and TI, T2, ... represent the Tg (K) of the homopolymers of each of the monomers. TI, T2, ... are the values ​​described in the Polymer Handbook (Second Edition, Brandrup and E.H. Immergut ed.), III-139 to 179. When the Tg of a homopolymer of a monomer is unclear, the glass transition temperature (°C) refers to a static glass transition temperature. For example, a sample is taken in a measuring cup and subjected to vacuum suction to completely remove the solvent, followed by measuring the changes in the amount of heat at a heating rate of 3°C / min over a temperature range of -20 to +200°C using a DSC-220U differential scanning calorimeter (produced by Seiko Instruments Inc.). The initial change point on the baseline at the low-temperature end is considered to be the static glass transition temperature. The acrylic resin containing hydroxyl(Al-1) preferably has an acidity value of 0.5 to 15 mg KOH / g, and more preferably 1 to 10 mg KOH / g, from the point of view, for example, of the shelf life of the paint composition and the final appearance. The method for copolymerizing the monomer mixture to obtain the acrylic resin containing hydroxy(Al-1) is not particularly limited, and known copolymerization methods can be used. Among these, a solution polymerization method is preferred, in which the polymerization is carried out in an organic solvent in the presence of a polymerization initiator. Examples of organic solvents used in the solution polymerization method include toluene, xylene, Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., a high-boiling-point oil-based solvent), and similar aromatic solvents; ethyl acetate, butyl acetate, propyl propionate, butyl propionate, l-methoxy-2-propyl acetate, 2-ethoxyethyl propionate, 3-methoxybutyl acetate, ethylene glycol ethyl ether acetate, propylene glycol methyl ether acetate, and similar ester-based solvents; methyl ethyl ketone, methyl isobutyl ketone, methyl amyl ketone, and similar ketone-based solvents; isopropanol, n-butanol, isobutanol, 2-ethylhexanol, and similar alcohol-based solvents; and the like. These organic solvents can be used individually or in combination. From the standpoint of acrylic resin solubility, ester-based and ketone-based solvents are preferable. An aromatic solvent can also be used appropriately in combination. Examples of polymerization initiators used to copolymerize the acrylic resin containing hydroxy(Al-1) include known radical polymerization initiators such as 2,2'-azobisisobutyronitrile, benzoyl peroxide, di-t-butyl peroxide, di-t-amyl peroxide, t-butyl peroctoate, 2,2'-azobis(2-methylbutyronitrile) and 2,2'-azobis(2,4-dimethylvallenitrile). Acrylic resins containing hydroxyl (Al-1) can be used alone or in a combination of two or more. Secondary acrylic resin containing hydroxy (Al-la) From the point of view of the final appearance of the resulting coating film, a secondary acrylic resin containing hydroxyl (Al-la) can also be used appropriately as one of the modalities of the acrylic resin containing hydroxyl (Al-1). The secondary acrylic resin containing hydroxyl (Al-la) can be produced, for example, using a polymerizable unsaturated monomer containing secondary hydroxyl such as a type of polymerizable unsaturated monomer containing hydroxyl described above in the method for producing the acrylic resin containing hydroxyl (Al-1). Examples of polymerizable unsaturated monomers containing secondary hydroxyl groups include polymerizable unsaturated monomers having a secondary hydroxyl group whose alkyl group in the ester radical has 2 to 8, preferably 3 to 6, and more preferably 3 or 4 carbon atoms, such as 2-hydroxypropyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, and 3-hydroxybutyl (meth)acrylate; adducts of (meth)acrylic acid with an epoxy-containing compound (e.g., Cardura E10P, trade name, produced by Momentive Specialty Chemicals Inc., ri QRnn / ιζηζ / E / γίΛΐ neodecanoic acid glycidyl ester); and the like. These may be used alone or in a combination of two or more. From the point of view of the finished appearance of the resulting coating film, 2-hydroxypropyl (meth)acrylate is preferably used. When the above-described secondary hydroxy-containing polymerizable unsaturated monomer is used to produce the secondary hydroxy-containing acrylic resin (Al-la), the amount of the secondary hydroxy-containing polymerizable unsaturated monomer is preferably within the range of 15 to 45% by mass and more preferably 20 to 40% by mass, based on the total amount of copolymerizable monomeric components that constitute the secondary hydroxy-containing acrylic resin (Al-la), from the point of view of the final appearance of the resulting coating film. In acrylic resin containing secondary hydroxyl (Al-la), the content of the polymerizable unsaturated monomer containing secondary hydroxyl in the total amount of polymerizable unsaturated monomer containing hydroxyl is within the range of preferably 50 to 100% by mass, more preferably 55 to 100% by mass, and even more preferably 60 to 100% by mass, from the point of view of water resistance and the final appearance of the resulting coating film. Acrylic resin containing hydroxy and alkoxysilyl (Al-lb) As another form of acrylic resin containing hydroxy (Al-1), an acrylic resin containing hydroxy and alkoxysilyl (Al-lb) can preferably be used from the point of view of the scratch resistance of the resulting coating film. Hydroxy- and alkoxysilyl-containing acrylic resin (Al-lb) is a resin that has at least one hydroxy group and at least one alkoxysilyl group per molecule. The use of acrylic resin containing hydroxy and alkoxysilyl (Al-lb) forms a crosslink due to a condensation reaction between alkoxysilyl groups and a reaction between an alkoxysilyl group and a hydroxyl group, thus increasing the curability of the coating film. Examples of the alkoxy radical of the alkoxysilyl group present in acrylic resin containing hydroxy and alkoxysilyl (Al-lb) include an alkoxy radical having approximately 1 to 6 carbon atoms, preferably approximately 1 to 3 carbon atoms, such as methoxy, ethoxy, and propoxy. The alkoxy radical is most preferably methoxy and ethoxy, and particularly methoxy from the standpoint of the scratch resistance of the resulting coating film. The alkoxysilyl group includes a trialkoxysilyl group, a dialkoxysilyl group, and a monoalkoxysilyl group. The alkoxysilyl group is preferably a trialkoxysilyl group from the standpoint of the scratch resistance of the resulting coating film. RI QRnn / I7P7 / E / YILI When the alkoxysilyl group is a dialkoxysilyl group or a monoalkoxysilyl group, the groups other than the alkoxy that are attached to the silicon atom include alkyl having approximately 1 to 6 carbon atoms, preferably approximately 1 to 3 carbon atoms (e.g., methyl, ethyl, and propyl). The acrylic resin containing hydroxy and alkoxysilyl (Al-lb) can be obtained, for example, by using an unsaturated polymerizable monomer containing alkoxysilyl as a type of unsaturated polymerizable monomer and other unsaturated polymerizable monomers in the method for producing the acrylic resin containing hydroxy (Al-1). An alkoxysilyl-containing polymerizable unsaturated monomer is a compound that has at least one alkoxysilyl group and at least one polymerizable unsaturated bond per molecule. Examples of alkoxysilyl-containing polymerizable unsaturated monomers include vinyltrimethoxysilane, vinyltriethoxysilane, acryloxyethyltrimethoxysilane, methacryloxyethyltrimethoxysilane, methacryloxypropyltrimethoxysilane, acryloxypropyltrimethoxysilane, acryloxypropyltriethoxysilane, methacryloxypropyltriethoxysilane, and vinyltris(3-methoxyethoxy)silane. The polymerizable unsaturated monomer containing alkoxysilyl is preferably vinyltrimethoxysilane, γ-acryloxypropyltrimethoxysilane and γ-methacryloxypropyltrimethoxysilane, and more preferably γ-methacryloxypropyltrimethoxysilane from the point of view of the scratch resistance of the resulting coating film. The polymerizable unsaturated monomer containing alkoxysilyl for use may be a commercially available product. Examples include KBM-1003, KBE-1003, KBM-502, KBM-503, KBE-502, KBE-503, KBM-5103, and KBM-5803 (all produced by Shin-Etsu Chemical Co., Ltd.); Y9936 and A-174 (produced by Momentive Performance Materials Inc.); and OFS-6030 and Z-6033 (produced by Dow Toray Co., Ltd.). These polymerizable unsaturated monomers containing alkoxysilyl can be used alone or in combination with two or more. Specifically, acrylic resin containing hydroxyl and alkoxysilyl (Al-lb) can be obtained, for example, by copolymerizing the polymerizable unsaturated monomer containing hydroxyl, the polymerizable unsaturated monomer containing alkoxysilyl, and other polymerizable unsaturated monomers (polymerizable unsaturated monomers other than the polymerizable unsaturated monomer containing hydroxyl and the polymerizable unsaturated monomer containing alkoxysilyl). Other polymerizable unsaturated monomers that can be used in the copolymerization include, for example, other polymerizable unsaturated monomers (1) to (6) for use in obtaining the acrylic resin containing hydroxyl (Al-1). The polymerizable unsaturated monomers can be used alone or in combination with two or more. When producing the acrylic resin containing hydroxy and alkoxysilyl (Al-lb), the amount of RI QRnn / I7P7 / E / YILI polymerizable unsaturated monomer containing hydroxyl for use is preferably within the range of 5 to 60% by mass, more preferably 15 to 50% by mass, and even more preferably 25 to 45% by mass, based on the total amount of copolymerizable monomeric components constituting the hydroxyl and alkoxysilyl (Al-lb) containing acrylic resin from the point of view of scratch resistance, water resistance, curability and final appearance of the resulting coating film. The hydroxyl value of the acrylic resin containing hydroxyl and alkoxysilyl (Al-lb) is preferably within the range of 70 to 200 mg KOH / g, more preferably 80 to 190 mg KOH / g and even more preferably 100 to 180 mg KOH / g from the point of view of scratch resistance, water resistance, curability and finished appearance of the resulting coating film. Secondary acrylic resin containing hydroxy and alkoxysilyl (Al-lc) As another form of acrylic resin containing hydroxy (Al-1), a secondary acrylic resin containing hydroxy and alkoxysilyl (Al-lc) can be used from the point of view of the finished appearance and scratch resistance of the resulting coating film. The secondary acrylic resin containing hydroxy and alkoxysilyl (Al-lc) is included in the secondary acrylic resin containing hydroxy (Al-la) and also in the acrylic resin containing hydroxy and alkoxysilyl (Al-lb). The secondary acrylic resin containing hydroxy and alkoxysilyl (Al-lc) can be produced, for example, using a polymerizable unsaturated monomer containing secondary hydroxy (e.g., a polymerizable unsaturated monomer containing secondary hydroxy usable in the production of the secondary acrylic resin containing hydroxy (Al-la)) as a type of polymerizable unsaturated monomer containing hydroxy in the method for producing the acrylic resin containing hydroxy and alkoxysilyl (Al-lb). When the above-described secondary hydroxy-containing polymerizable unsaturated monomer is used in the production of the secondary hydroxy- and alkoxysilyl-containing acrylic resin (Al-lc), the amount of the secondary hydroxy-containing polymerizable unsaturated monomer for use is preferably within the range of 15 to 45% by mass, and more preferably 20 to 40% by mass based on the total amount of copolymerizable monomeric components constituting the secondary hydroxy- and alkoxysilyl-containing acrylic resin (Allc) from the point of view of the final appearance of the resulting coating film. In the production of secondary acrylic resin containing hydroxy and alkoxysilyl (Allc), the content of the polymerizable unsaturated monomer containing secondary hydroxy in the total amount of polymerizable unsaturated monomer containing hydroxy is preferably within RI QRnn / I7P7 / E / YILI of the range of 50 to 100% by mass, more preferably from 55 to 100% by mass, and even more preferably from 60 to 100% by mass from the point of view of water resistance and the final appearance of the resulting coating film. Examples of film-forming resins usable as the binder component (A), other than those described above, in the paint composition of the present invention include hydroxy-free acrylic resin, hydroxy-containing or hydroxy-free polyester resin, hydroxy-containing or hydroxy-free polyether resin, and hydroxy-containing or hydroxy-free polyurethane resin. Of these, hydroxy-containing polyester resin and hydroxy-containing polyurethane resin are preferred as film-forming resins. Polyester resin containing hydroxyl groups can be produced using a commonly employed method, such as esterification between a polybasic acid and a polyhydric alcohol. A polybasic acid is a compound that has two or more carboxyl groups per molecule, such as phthalic acid, isophthalic acid, terephthalic acid, succinic acid, adipic acid, azelaic acid, sebacic acid, tetrahydrophthalic acid, hexahydrophthalic acid, maleic acid, fumaric acid, itaconic acid, trimellitic acid, pyromellitic acid, and their anhydrides.A polyhydric alcohol is a compound that has two or more hydroxyl groups per molecule, and examples include diols, such as ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2-diethyl-1,3-propanediol, neopentyl glycol, 1,9-nonanediol, 1,4-cyclohexanediol, neopentyl glycol ester of hydroxypivalic acid, 2-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 2,2,4-trimethylpentanediol, and hydrogenated bisphenol A; trihydric or higher polyol components, such as trimethylolpropane, trimethylolethane, glycerin, and pentaerythritol; and hydroxycarboxylic acids, such as 2,2-dimethylolpropionic acid, 2,2-dimethylolbutanoic acid, 2,2-dimethylolpentanoic acid, 2,2-dimethylolhexanoic acid and 2,2-dimethyloloctanoic acid. An α-olefin epoxide, such as propylene oxide and butylene oxide, or a monoepoxy compound, such as Cardura E10P (trade name, produced by Momentive Specialty Chemicals, a glycidyl ester of a highly branched synthetic saturated fatty acid), can be reacted with an acid to introduce these compounds into a polyester resin. The introduction of carboxyl groups into a polyester resin can be accomplished, for example, by adding an acid anhydride to a hydroxy-containing polyester and semi-esterifying the hydroxy-containing polyester. The hydroxyl value of the hydroxyl-containing polyester resin is preferably within the range of 80 to 250 mg KOH / g, more preferably 100 to 200 mg KOH / g. The weight average molecular weight of the hydroxyl-containing polyester resin is preferably within the range of 500 to 3500, and more preferably 500 to 2500. ri QRnn / ιζηζ / E / γίΛΐ Hydroxy-containing polyurethane resin is, for example, a hydroxy-containing polyurethane resin obtained by reacting a polyol with a polyisocyanate. Examples of low molecular weight polyols include dihydric alcohols, such as ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, and hexamethylene glycol; and trihydric alcohols, such as trimethylolpropane, glycerin, and pentaerythritol. Examples of high molecular weight polyols include polyether polyols, polyester polyols, acrylic polyols, and epoxy polyols. Examples of polyether polyols include polyethylene glycol, polypropylene glycol, and polytetramethylene glycol. Examples of polyester polyols include the dihydric alcohols described above, polycondensation products of an alcohol, such as dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, or neopentyl glycol, with a dibasic acid, such as adipic acid, azelaic acid, or sebacic acid. lactone-based ring-opening polymeric polyols, such as polycaprolactone; and polycarbonate diol.For example, polyols containing carboxyls such as 2,2-dimethylolpropionic acid and 2,2-dimethylolbutanoic acid can also be used. Examples of polyisocyanates reacting with a polyol include aliphatic polyisocyanates, such as hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, dimeric acid diisocyanate, and lysine diisocyanate; biuret-type adducts of these polyisocyanates and isocyanurate ring adducts of these polyisocyanates; alicyclic diisocyanates, such as isophorone diisocyanate, 4,4'-methylene bis(cyclohexylisocyanate), methylcyclohexane-2,4-(or -2,6-)diisocyanate, 1,3-(or 1,4-) di(methyl)cyclohexane, 1,4-cyclohexane diisocyanate, 1,3-cyclopentane diisocyanate, and 1,2-cyclohexane diisocyanate; biuret-type adducts of these polyisocyanates and isocyanurate ring adducts of these polyisocyanates;aromatic diisocyanate compounds, such as xylylene diisocyanate, meta-xylylene diisocyanate, tetramethyl xylylene diisocyanate, tolylene diisocyanate, 4,4'-diphenyl methane diisocyanate, 1,5-naphthalene diisocyanate, 1,4-naphthalene diisocyanate, 4,4-toluidine diisocyanate, 4,4'-diphenyl ether diisocyanate, (m- or p-)phenylene diisocyanate, 4,4'-biphenylene diisocyanate, 3,3'-dimethyl-4,4'-biphenylene diisocyanate, bis(4-isocyanatophenyl)sulfone and isopropylidene bis(4-phenylsocyanate); biuret-type adducts of these polyisocyanates and isocyanurate ring adducts of these polyisocyanates; polyisocyanates having three or more isocyanate groups per molecule, such as triphenylmethane-4,4', 4-triisocyanate, 1,3,5-triisocyanatebenzene, 2,4,6-triisocyanate toluene and 4,4'-dimethyldiphenylmethane-2,2',5,5'-tetraisocyanate; and biuret-type adducts of these polyisocyanates, and isocyanurate ring adducts of these polyisocyanates. The hydroxyl value of the polyurethane resin containing hydroxyl is preferably within the range of 80 to 250 mg KOH / g, more preferably 100 to 200 mg KOH / g. The weight average molecular weight of the polyurethane resin containing hydroxyl is preferably within the range of 500 to 10,000, and more preferably 1,000 to 5,000. When hydroxy(Al-1)-containing acrylic resin and a resin other than hydroxy(Al-1)-containing acrylic resin (more specifically, polyester resin, polyurethane resin, polyether resin, etc.) are used in combination as the binder component (A), the content of the resin other than hydroxy(Al-1)-containing acrylic resin is preferably within the range of 50 parts by mass or less, and more preferably from 1 to 20 parts by mass, per 100 parts by mass of the solids content of the hydroxy(Al-1)-containing acrylic resin. Crosslinking agent (A2) In the paint composition of the present invention, the binder component (A) may contain a crosslinking agent (A2). The crosslinking agent (A2) is a compound that can react with a crosslinkable functional group in the binder component (A) and form a crosslinking structure through the reaction. Preferably, the crosslinkable functional group in the binder component (A) is a hydroxyl group, and the crosslinking agent (A2) is a compound that is reactive with a hydroxyl group. Specifically, for example, the crosslinking agent (A2) is preferably a polyisocyanate compound, a blocked polyisocyanate compound, or an amino resin. In particular, from the standpoint of finished appearance, scratch resistance, and the like, the crosslinking agent (A2) preferably contains a polyisocyanate compound. A polyisocyanate compound is a compound that has at least two isocyanate groups per molecule. Examples include aliphatic polyisocyanate compounds, alicyclic polyisocyanate compounds, aromatic-aliphatic polyisocyanate compounds, aromatic polyisocyanate compounds, derivatives of these polyisocyanate compounds, and the like. Examples of aliphatic polyisocyanate compounds include aliphatic diisocyanate compounds, such as trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, pentamethylene diisocyanate, 1,2-propylene diisocyanate, 1,2-butylene diisocyanate, 2,3-butylene diisocyanate, 1,3-butylene diisocyanate, 2,4,4- or 2,2,4-trimethylhexamethylene diisocyanate, dimeric acid diisocyanate, and methyl 2,6-diisocyanatehexanoate (common name: lysine diisocyanate); aliphatic triisocyanate compounds, such as 2,6-ethyl 2-isocyanatohexanoate, 1,6-diisocyanate-3-isocyanate-methylhexane, 1,4,8-triisocyanate-octane, 1,6,11-triisocyanate-undecane, 1,8-diisocyanate-4-methylisocyanate, 1,3,6-triisocyanate-hexane and 2,5,7-trimethyl1,8-diisocyanate-5-methylisocyanate-octane; and the like. Examples of alicyclic polyisocyanate compounds include alicyclic diisocyanate compounds, such as 1,3-cyclopentene diisocyanate, 1,4-cyclohexane diisocyanate, 1,3-cyclohexane diisocyanate, 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate (common name: isophorone diisocyanate), 4-methyl-1,3-cyclohexyl diisocyanate (common name: hydrogenated TDI), 2-methyl-1,3-cyclohexyl diisocyanate, 1,3-ol,4-bis(isocyanatomethyl)cyclohexane (common name: ri QRnn / ιζηζ / Ε / γίΛΐ hydrogenated xylylene diisocyanate) or mixtures thereof, and methylenebis(4,lcyclohexanediyl)d¡socyanate (common name: hydrogenated MDI) and norbornane diisocyanate; alicyclic triisocyanate compounds, such as 1,3,5-triisocyanatocyclohexane, 1,3,5trimethylisocyanatocyclohexane, 2-(3-isocyanatopropyl)-2,5-di(isocyanatomethyl)-bicyclo(2.2.1)heptane, 2(3-ocyanatopropyl)-2,6-di(socyanatomethyl)-bicyclo(2.2.1)heptane, 3-(3-ocyanatopropyl)-2,5di(socyanatomethyl)-bicyclo(2.2.1)heptane, 5-(2-isocyanatoethyl)-2-isocyanatomethyl-3-(3-isocyanatopropyl)bicyclo(2.2.1)heptane, 6-(2-isocyanatoethyl)-2-isocyanatomethyl-3-(3-isocyanatopropyl)bicyclo(2.2.1)heptane, 5-(2-isocyanatoethyl)-2-isocyanatomethyl-2-(3-isocyanatopropyl)bicyclo(2.2.1)heptane and 6-(2-isocyanatoethyl)-2-isocyanatomethyl-2-(3-isocyanatopropyl)bicyclo(2.2.1)heptane; and the like. Examples of aromatic-aliphatic polyisocyanate compounds include aromatic-aliphatic diisocyanate compounds, such as methylenebis(4,l-phenylene)diisocyanate (common name: MDI), 1,3 or 1,4-xylylene diisocyanate or mixtures thereof, 1,4-diisocyanate-1,4-diethylbenzene and 1,3 or 1,4-bis(1-isocyanate-1-methylethyl)benzene (common name: tetramethylxylylene diisocyanate) or mixtures thereof; aromatic-aliphatic triisocyanate compounds, such as 1,3,5-triisocyanatemethylbenzene; and the like. Examples of aromatic polyisocyanate compounds include aromatic diisocyanate compounds, such as m-phenylene diisocyanate, p-phenylene diisocyanate, 4,4'-diphenyl diisocyanate, 1,5-naphthalene diisocyanate, 2,4-tolylene diisocyanate (common name: 2,4-TDI) or 2,6-tolylene diisocyanate (common name: 2,6-TDI) or mixtures thereof, 4,4'-toluidine diisocyanate and 4,4'-diphenyl ether diisocyanate; aromatic triisocyanate compounds, such as triphenylmethane-4,4',4-triisocyanate, 1,3,5-benzene triisocyanate and 2,4,6-toluene triisocyanate; aromatic tetraisocyanate compounds, such as 4,4'-diphenylmethane-2,2',5,5'-tetrasocyanate; and the like. Examples of derivatives of polyisocyanate compounds include dimers, trimers, biurets, allophanates, urethdiones, urethymine, isocyanurates, oxadiazinetriones, polymethylene polyphenyl polyisocyanates (crude MDI, polymeric MDI), crude TDI and the like, of the polyisocyanate compounds mentioned above. The polyisocyanate compounds and derivatives thereof mentioned above can be used individually or in a combination of two or more. From the standpoint of weather resistance, etc., of the resulting coating film, the polyisocyanate compound to be used is preferably at least a member selected from the group consisting of an aliphatic polyisocyanate compound, an alicyclic polyisocyanate compound, and a derivative thereof. From the standpoint of increasing the solids content of the resulting paint composition, and improving the finished appearance and scratch resistance of the resulting coating film, the polyisocyanate compound to be used is more preferably an aliphatic polyisocyanate compound and / or a derivative thereof. The aliphatic polyisocyanate compound and / or a derivative thereof for use is preferably an aliphatic diisocyanate compound and / or an isocyanurate thereof, and more preferably hexamethylene diisocyanate and / or an isocyanurate thereof, from the point of view of an increase in the solids content of the resulting paint composition, and the final appearance and scratch resistance of the resulting coating film. When the paint composition of the present invention contains a polyisocyanate compound described above as the crosslinking agent (A2), the proportion of the polyisocyanate compound is preferably within the range of 5 to 60 parts by mass, more preferably 15 to 50 parts by mass, and even more preferably 25 to 45 parts by mass, per 100 parts by mass of the total solids content of the resin containing hydroxyl(A1) and the crosslinking agent (A2), from the point of view of the finished appearance and scratch resistance of the resulting coating film. The blocked polyisocyanate compound usable as the crosslinking agent (A2) is a compound obtained by blocking isocyanate groups of a polyisocyanate compound described above with a blocking agent. Examples of blocking agents include phenolic compounds, such as phenol, cresol, xylenol, nitrophenol, ethylphenol, dihydroxydiphenyl, butylphenol, isopropylphenol, nonylphenol, octylphenol, and methyl hydroxybenzoate; lactam compounds, such as ε-caprolactam, δ-valerolactam, γ-butyrolactam, and β-propiolactam; aliphatic alcohol compounds, such as methanol, ethanol, propyl alcohol, butyl alcohol, amyl alcohol, and lauryl alcohol; ether compounds, such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, and methoxymethanol;Alcoholic compounds, such as benzyl alcohol, glycolic acid, methyl glycolate, ethyl glycolate, butyl glycolate, lactic acid, methyl lactate, ethyl lactate, butyl lactate, methylol urea, methylol melamine, diacetone alcohol, 2-hydroxyethyl acrylate and 2-hydroxyethyl methacrylate; oxime compounds, such as formamide oxime, acetamide oxime, acetoxime, methyl ethyl ketoxime, diacetyl monoxime, benzophenone oxime and cyclohexane oxime; active methylene compounds, such as dimethyl malonate, diethyl malonate, ethyl acetoacetate, methyl acetoacetate and acetylacetone; mercaptan compounds, such as butyl mercaptan, t-butyl mercaptan, hexyl mercaptan, t-dodecyl mercaptan, 2-mercaptobenzothiazole, thiophenol, methyl thiophenol and ethyl thiophenol; acid amide compounds, such as acetanilide, acetanisidide, acetotoluide, acrylamide, methacrylamide, acetic acid amide, stearic acid amide and benzamide;Imidine compounds, such as succinimide, phthalimide, and maleimide; amine compounds, such as diphenylamine, phenylnaphthylamine, xylidine, N-phenylxylidine, carbazole, aniline, naphthylamine, butylamine, dibutylamine, and butylphenylamine; imidazole compounds, such as imidazole and 2-ethylimidazole; urea compounds, such as urea, thiourea, ethylenurea, ethylthiourea, and diphenylurea; carbamate compounds, such as phenyl N-phenylcarbamate; imine compounds, such as ethylenimine and propylenimine; sulfite compounds, such as sodium bisulfite and potassium bisulfite; azole compounds; and the like. Examples of azole compounds include pyrazole or pyrazole derivatives, such as pyrazole, 3,5-dimethylpyrazole, 3-methylpyrazole, 4-bendl-3,5-dimethylpyrazole, 4-nitro-3,5-dimethylpyrazole, 4-bromo-3,5-dimethylpyrazole, and 3-methyl-5-phenylpyrazole; imidazole or imidazole derivatives, such as imidazole, benzimidazole, 2-methylimidazole, 2-ethylimidazole, and 2-phenylimidazole;imidazoline derivatives, such as 2-methylimidazoline and 2-phenylimidazoline; and the like. Particularly preferred blocking agents are, for example, oxime-based blocking agents, active methylene-based blocking agents, and pyrazole or pyrazole derivatives. When blocking is performed (a blocking agent is reacted), a solvent may be added, if necessary. The solvent used in the blocking reaction is preferably one that is non-reactive with an isocyanate group. Examples of such solvents include ketones, such as acetone and methyl ethyl ketone; esters, such as ethyl acetate; N-methyl-2-pyrrolidone (NMP); and similar solvents. When the paint composition of the present invention contains a blocked polyisocyanate compound described above as the crosslinking agent (A2), the proportion of the blocked polyisocyanate compound is preferably within the range of 5 to 60 parts by mass, more preferably 15 to 50 parts by mass, and even more preferably 25 to 45 parts by mass, per 100 parts by mass of the total solids content of the binder component, from the point of view of the finished appearance and scratch resistance of the resulting coating film. When the paint composition of the present invention contains a polyisocyanate compound and / or a blocked polyisocyanate compound described above as a crosslinking agent (A2), the ratio is preferably such that the equivalent ratio (NCO / OH) of the total isocyanate groups (including blocked isocyanate groups) in the polyisocyanate compound and the blocked polyisocyanate compound to the hydroxy groups of the hydroxy-containing resin (Al) is generally within the range of 0.5 to 2, and preferably 0.8 to 1.5, from the point of view of water resistance and finished appearance of the resulting coating film. Amino resins that can be used as crosslinking agents (A2) include partially or fully methylated amino resins obtained by reacting an amino component with an aldehyde component. Examples of amino components include melamine, urea, benzoguanamine, acetoguanamine, steroguanamine, spiroguanamine, dicyandiamide, and similar compounds. Examples of aldehyde components include formaldehyde, paraformaldehyde, acetaldehyde, benzaldehyde, and similar compounds. Also usable are those obtained by etherifying some or all of the methylol groups of the above aminomethylated resins with a suitable alcohol. Examples of alcohols usable for etherification include methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, 2-ethylbutanol, 2-ethylhexanol, and the like. The preferred amino resins are melamine resins. Examples of usable melamine resins include alkyl etherified melamine resins obtained by etherifying some or all of the methylol groups of partially or fully methylated melamine resins with the alcohol. Preferred examples of alkyl etherified melamine resins include methyl etherified melamine resins obtained by etherifying some or all of the methylol groups of partially or fully methylated melamine resins with methyl alcohol; butyl etherified melamine resins obtained by etherifying some or all of the methylol groups of partially or fully methylated melamine resins with butyl alcohol; mixed methyl-butyl etherified melamine resins obtained by etherifying some or all of the methylol groups of partially or fully methylated melamine resins with methyl alcohol and butyl alcohol; and the like. Melamine resin has an average molecular weight preferably of 400 to 6000, more preferably of 500 to 5000 and even more preferably of 800 to 4000. A commercially available product such as melamine resin may be used. Examples of commercially available products include Cymel 202, Cymel 203, Cymel 238, Cymel 251, Cymel 303, Cymel 323, Cymel 324, Cymel 325, Cymel 327, Cymel 350, Cymel 385, Cymel 1156, Cymel 1158, Cymel 1116, Cymel 1130 (all produced by Allnex Japan Inc.), U-VAN 120, U-VAN 20HS, U-VAN 20SE60, U-VAN 2021, U-VAN 2028, U-VAN 28-60 (all produced by Mitsui Chemicals, Inc.), and similar products. The melamine resins described above can be used alone or in a combination of two or more. When the paint composition of the present invention contains an amino resin described above as the crosslinking agent (A2), its proportion is preferably within the range of 0.5 to 40 parts by mass, more preferably 1.0 to 15 parts by mass, even more preferably 1.5 to 10 parts by mass, and even more preferably 1.5 to 5 parts by mass, per 100 parts by mass of the total solids content of the binder component, from the point of view of water resistance and the final appearance of the resulting coating film. Crosslinking agents (A2) can be used individually or in combination RI QRnn / Ι7Π7 / Ε / ΥΙΛΙ of two or more. Rheology control agent In general, it is preferable for a paint composition to have low viscosity when the shear rate is high, such as during atomization, and high viscosity when the shear rate is low, such as during coating (e.g., by a coating method such as air spray coating, airless spray coating, rotary atomizing coating, etc.). This is because such a paint composition can form a coating film with an excellent appearance. Specifically, a paint with a viscosity that decreases with increasing shear rate is preferable. A rheology control agent is a component added to a paint composition to develop the desired viscosity. First rheology control agent (B) The first rheology control agent (B) contains a reaction product of (bl) a polyisocyanate compound, (b2) a primary monoamine having a number-average molecular weight of 300 or less, and (b3) a polyetheramine having a number-average molecular weight of more than 300 and less than 6000, wherein the proportion of polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) is 0.5% by mass or more and less than 10% by mass based on the total amount of components (bl) to (b3). Polyisocyanate compound (bl) The polyisocyanate compound (bl) for use may be, for example, a polyisocyanate compound mentioned above in the description of the crosslinking agent (A2). Polyisocyanate compounds may be used alone, or in a combination of two or more. The polyisocyanate compound (bl) is preferably an aliphatic polyisocyanate compound and / or a derivative thereof, more preferably an aliphatic diisocyanate compound and / or an isocyanurate thereof, from the standpoint of transparency, water resistance, and the final appearance of the resulting coating film. Of these, hexamethylene diisocyanate and / or an isocyanurate thereof are preferred, and hexamethylene diisocyanate is most preferred. Primary monoamine that has a number average molecular weight of 300 or less 1b2) Examples of primary monoamines having a number-average molecular weight of 300 or less (b2) include benzylamine, ethylamine, n-propylamine, sec-propylamine, n-butylamine, sec-butylamine, tert-butylamine, n-pentylamine, α-methylbutylamine, α-ethylpropylamine, β-ethylbutylamine, hexylamine, octylamine, 2-ethylhexylamine, n-decylamine, 1-aminooctadecane (stearylamine), cyclohexylamine, aniline, 2-(2-aminoethoxy)ethanol, and the like. Primary monoamines (b2) may be used alone or in combination with other monoamines. Since the primary monoamine has a number-average molecular weight of 300 or less (b2), a primary monoamine containing a benzene ring is preferable, and benzylamine is most preferable, from the point of view of transparency, water resistance and finished appearance of the resulting coating film. The number average molecular weight of the primary monoamine having a number average molecular weight of 300 or less (b2) is within the range of preferably 60 to 300, more preferably 75 to 250, and even more preferably 90 to 150, from the point of view of transparency, water resistance and the final appearance of the resulting coating film. Polyether amine (b3) Polyether amine (b3) is an amine that has a number-average molecular weight of more than 300 and less than 6000, and that contains two or more ether linkages per molecule. In particular, the number average molecular weight of the monoamine polyether (b3) is within the range of preferably 300 to 4000, more preferably 320 to 3000, and even more preferably 350 to 2000, from the point of view of transparency, water resistance and the final appearance of the resulting coating film. From the point of view of transparency, water resistance and the final appearance of the resulting coating film, polyether amine (b3) is preferably a primary amine. The polyetheramine (b3) is preferably at least one amine selected from the group consisting of monoamines, diamines, and triamines, from the standpoint of the transparency of the resulting coating film. In particular, the polyetheramine (b3) is most preferably a diamine, from the standpoint of the transparency, water resistance, and final appearance of the resulting coating film. Therefore, from the standpoint of transparency, water resistance, and the final appearance of the resulting coating film, the polyether amine (b3) is preferably at least one amine selected from the group consisting of a primary monoamine, a primary diamine, and a primary triamine, and more preferably a primary diamine. In the present invention, the primary diamine is an amine having two -NH2 groups, and the primary triamine is an amine having three -NH2 groups. Like polyetheramine (b3), for example, an amine containing polyoxyalkylene can preferably be used. RI QRnn / I7P7 / E / YILI From the point of view of the transparency of the resulting coating film, at least one amine compound selected from the group consisting of a polyoxyalkylene-containing monoamine represented by formula (1) below (b3-l), a polyoxyalkylene-containing diamine represented by formula (3) below (b3-2), and a polyoxyalkylene-containing polyamine having three or more amino groups represented by formula (6) below (b3-3) can be used preferably as the polyoxyalkylene-containing amine. Of these, the polyoxyalkylene (b3-2) containing diamine can be used in a particularly preferential way from the point of view of transparency, water resistance and the final appearance of the resulting coating film. Polyoxyalkylene-containing monoamine Íb3-1) The polyoxyalkylene-containing monoamine (b3-l) is a polyoxyalkylene-containing monoamine represented by formula (1) below. R1 I 0_R2--NHl ni (O RI QRnn / I7P7 / E / YILI (where R1 represents a monovalent organic group, preferably a monovalent hydrocarbon group, more preferably a C1-4 alkyl group; R2 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group and a tetramethylene group; m represents an integer from 2 to 70, preferably from 4 to 60, more preferably from 5 to 50; m oxyalkylene (O-R2) units may be the same or different; and when the oxyalkylene (O-R2) units are different from each other, the addition mode (polymerization mode) of the oxyalkylene (O-R2) units may be a random mode or a block mode). Specifically, as the polyoxyalkylene-containing monoamine (b3-l), a polyoxyalkylene-containing monoamine represented by the following formula (2) may preferably be used. (where a represents an integer from 1 to 35, preferably from 1 to 30, more preferably from 1 to 25; and b represents an integer from 1 to 35, preferably from 2 to 30, and more preferably from 3 to 25). A commercially available monoamine containing polyoxyalkylene (b3-l) may be used. Examples of such commercially available products include JEFFAMINE M600 (number average molecular weight: 600; in formula (2) above, a = 1 and b = 9), JEFFAMINE M-1000 (number average molecular weight: 1000; in formula (2) above, a = 19 and b = 3), JEFFAMINE M-2005 (number average molecular weight: 2000; in formula (2) above, a = 6 and b = 29), JEFFAMINE M-2070 (number average molecular weight: 2000; in formula (2) above, a = 31 and b = 10) (all produced by Huntsman Corporation), and similar products. Diamine containing polyoxyalkylene (b3-2) The polyoxyalkylene-containing diamine (b3-2) is a polyoxyalkylene-containing diamine represented by formula (3) below. H2NR3—1-0—R4-|---NH2(3) (where R3 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group, and a tetramethylene group; R4 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group, and a tetramethylene group; n represents an integer from 2 to 70, preferably 4 to 60, more preferably 5 to 50; n oxyalkylene (O-R4) units may be the same or different; and when the oxyalkylene (O-R4) units are different from each other, the addition mode (polymerization mode) of the oxyalkylene (O-R4) units may be a random mode or a mode of block). Specifically, the polyoxyalkylene (b3-2) containing diamine to be used is preferably a polyoxyalkylene containing diamine represented by formula (4) below. CH3ch3r 1 QRnn / ιζηζ / E / γίΛΐ (where c represents an integer from 2 to 70, preferably from 3 to 60, and more preferably from 4 to 50) and / or a polyoxyalkylene-containing diamine represented by formula (5) below CH3ch3ch3(5) RI QRnn / I7P7 / E / YILI (where dyf each represent an integer from 0 to 40, preferably from 1 to 20, more preferably from 1 to 10; e represents an integer from 2 to 40, preferably from 4 to 35, more preferably from 6 to 30; and d+f is within the interval from 1 to 80, in particular, preferably from 1 to 10, more preferably from 2 to 9, and even more preferably from 3 to 8). A commercially available product such as a diamine containing polyoxyalkylene (b3-2) can be used. Examples of commercially available products include JEFFAMINE D400 (number average molecular weight: 430; in formula (4) above, c ~ 6.1 (average value)), JEFFAMINE D-2000 (number average molecular weight: 2000; in formula (4) above, c ~ 33), JEFFAMINE D-4000 (number average molecular weight: 4000; in formula (4) above, c ~ 68), JEFFAMINE ED-600 (number average molecular weight: 600; in formula (5) above, d+f ~ 3.6 (average value), e ~ 9), JEFFAMINE ED-900 (number average molecular weight: 900; in formula (5) above, d+f ~ 6, e ~ 12.5 (average value)), JEFFAMINE ED-2003 (number average molecular weight in number: 2000; in the above formula (5), d+f ~ 6, e ~ 39), ELASTANE RT-1000 (average molecular weight in number: 1000) (all produced by Huntsman Corporation) and the like. Polyamine containing polyoxyalkylene (b3-3) The polyoxyalkylene-containing polyamine (b3-3) is a polyoxyalkylene-containing polyamine having three or more amino groups represented by the formula (6) below R5[ O—R6-] NH2(6) (where R5 represents a q-valent organic group having a carbon atom at a bonding site with the oxygen atom indicated in the formula, preferably a q-valent hydrocarbon group; R6 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group, and a tetramethyl group; p represents an integer from 2 to 70, preferably 4 to 60, more preferably 5 to 50; q represents an integer of 3 or more, preferably from 3 to 6, more preferably 3 or 4; p oxyalkylene (O-R6) units may be the same or different; and when the oxyalkylene (O-R6) units are different from each other, the addition mode (polymerization mode) of the oxyalkylene (O-R6) units may be a random mode or a block shape). Specifically, the polyoxyalkylene (b3-3) containing polyamine for use is preferably a polyoxyalkylene containing triamine represented by formula (7) below. ai QAnn / ιζηζ / E / γίΛΐ (7) (where g, hei each represent an integer from 1 to 40, preferably from 1 to 30, more preferably from 1 to 20; in particular, it is preferred that g+h+i be within the range of 3 to 40, preferably 4 to 30, more preferably 5 to 20) and / or a polyoxyalkylene-containing triamine represented by formula (8) below (8) (where j, kyr each represent an integer from 1 to 90, preferably from 1 to 75, more preferably from 1 to 60; in particular, it is preferred that j+k+r be within the range of 3 to 90, preferably 4 to 75, more preferably 5 to 60). A commercially available polyamine containing polyoxyalkylene (b3-3) may be used. Examples of commercially available products include JEFFAMINE T25. 403 (number average molecular weight: 440; in formula (7) above, g+h+i = 5 to 6), JEFFAMINE T-3000 (number average molecular weight: 3000; in formula (8) above, j+k+r « 50), JEFFAMINE T-5000 (number average molecular weight: 5000; in formula (8) above, j+k+r « 85) (all produced by Huntsman Corporation) and the like. Reaction method The reaction of the polyisocyanate compound (bl), the primary monoamine having a number-average molecular weight of 300 or less (b2), and the polyetheramine having a number-average molecular weight of more than 300 but less than 6000 (b3) can generally be carried out by mixing components (bl) and (b3) according to any selected method at, if necessary, elevated temperature. The reaction is carried out at a temperature preferably of 5 to 80°C, and more preferably of 10 to 60°C. Through this reaction, the carbonyls of the polyisocyanate compound (bl) and the amines of the primary monoamine having a number average molecular weight of 300 or less (b2) and the polyetheramine having a number average molecular weight of more than 300 but less than 6000 (b3) form urea bonds, thus forming a cross-linked structure. Components (bl) to (b3) can typically be mixed by any selected method. For example, components (bl) to (b3) can be mixed by concurrently adding a mixture of the primary monoamine (b2) and the polyetheramine (b3) and the polyisocyanate compound (bl) dropwise to a reaction vessel, or by adding the polyisocyanate compound (bl) dropwise to a mixture of the primary monoamine (b2) and the polyetheramine (b3). If necessary, the components can be mixed in several stages. The reaction of components (bl) to (b3) is preferably carried out in the presence of an organic solvent. Examples of organic solvents include toluene, xylene, Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., a high-boiling oil-based solvent) and similar aromatic solvents; mineral alcohol and similar aliphatic solvents; ethyl acetate, butyl acetate, propyl propionate, butyl propionate, l-methoxy-2-propyl acetate, 2-ethoxyethyl propionate, 3-methoxybutyl acetate, ethylene glycol acetate ethyl ether, propylene glycol acetate methyl ether and similar ester-based solvents; methyl ethyl ketone, methyl isobutyl ketone, methyl amyl ketone and similar ketone-based solvents; isopropanol, n-butanol, isobutanol, 2-ethylhexanol and similar alcohol-based solvents; and the like. Following the reaction of components (bl) to (b3), the proportions of components (bl) to (b3) are preferably within the following ranges based on the total amount of components (bl) to (b3), from the point of view of transparency, water resistance and finished appearance of the resulting coating film: RI QRnn / I7P7 / E / YILI Polyisocyanate compound (bl): 30 to 60% by mass, preferably 35 to 55% by mass, and more preferably 40 to 50% by mass; Primary monoamine having a number average molecular weight of 300 or less (b2): 35 to 65% by mass, preferably 40 to 62% by mass, and more preferably 45 to 60% by mass; and Polyether amine having a number average molecular weight of more than 300 and less than 6000 (b3): ​​0.5 to 15% by mass, preferably 1 to 10% by mass, and more preferably 1.5 to 8% by mass. Following the reaction of components (bl) to (b3), the ratio of the total number of amino groups in the primary monoamine (b2) and polyetheramine (b3) to the number of isocyanate groups in the polyisocyanate compound (bl) (amino groups / isocyanate groups) is preferably within the range of 0.7 to 1.5, more preferably 0.9 to 1.1, and even more preferably 0.95 to 1.05, from the point of view of transparency, water resistance, and finished appearance of the resulting coating film. In the present invention, the rheology control agent (B) may generally contain a reaction product of the polyisocyanate compound (bl) and the primary monoamine (b2) and may further contain a reaction product of the polyisocyanate compound (bl) and the polyetheramine (b3), in addition to the reaction product of the polyisocyanate compound (bl), the primary monoamine (b2) and the polyetheramine (b3). Furthermore, the reaction of components (bl) to (b3) is preferably carried out in the presence of a resin component, from the point of view of suppressing the aggregation of the reaction product. Examples of resin components used in the reaction of components (bl) to (b3) include acrylic resins, polyester resins, polyether resins, polycarbonate resins, polyurethane resins, epoxy resins, alkyl resins, and the like. Of these, acrylic resins are preferred from the standpoint of transparency, water resistance, and the finished appearance of the resulting coating film. The resin component may be the binder component (A) or a resin component other than the binder component (A). The resin component for use is preferably a film-forming resin other than the hydroxy- and alkoxysilyl-containing acrylic resin (Al-lb) and the hydroxy- and alkoxysilyl-containing secondary acrylic resin (Al-lc). For example, the resin component may be the hydroxy-containing secondary acrylic resin (Alia). When the reaction of components (bl) to (b3) is carried out in the presence of the resin component mentioned above, the mixing ratio of components (bl) to (b3) and the resin component is preferably such that the ratio of the total mass of components ri QRnn / ιζηζ / E / γίΛΐ (bl) to (b3) to the mass of the resin component, i.e., the ratio of (the total mass of components (bl) to (b3)) / (the mass of the resin component), is preferably within the range of 3 / 97 to 15 / 85, and more preferably from 5 / 95 to 12 / 88. In the present invention, when the reaction of components (bl) to (b3) is carried out in the presence of the resin component, the resin component is not included in the first rheology control agent (B). Second rheology control agent (C) The second rheology control agent (C) contains a reaction product of (Cl) a polyisocyanate compound, (c2) a primary monoamine having a number-average molecular weight of 300 or less, and (c3) a polyetheramine having two or more amino groups and having a number-average molecular weight of 1000 or more and less than 6000, wherein the proportion of polyetheramine having a number-average molecular weight of 1000 or more and less than 6000 (c3) is within the range of 10 to 30% by mass based on the total amount of components (cl) to (c3). Polyisocyanate compound (the) The polyisocyanate compound (cl) for use may also be a polyisocyanate compound mentioned above in the description of the crosslinking agent (A2), as indicated for the polyisocyanate compound (bl) of the first rheology control agent (b). Polyisocyanate compounds may be used alone, or in a combination of two or more. The polyisocyanate compound (cl) is preferably an aliphatic polyisocyanate compound and / or a derivative thereof, more preferably an aliphatic diisocyanate compound and / or an isocyanurate thereof, from the standpoint of sagging resistance during coating, resistance to water reddening, and the final appearance of the resulting coating film. Of these, hexamethylene diisocyanate and / or an isocyanurate thereof are preferred, and hexamethylene diisocyanate is most preferred. Primary monoamine that has a number average molecular weight of less than 300 (c2) The primary monoamine having a number-average molecular weight of 300 or less (c2) for use may be the primary monoamine (b2) mentioned in the description of the primary monoamine (b2) of the first rheology control agent (B). The primary monoamine (c2) may be used individually or in a combination of two or more. Since the primary monoamine has a number average molecular weight of 300 ori QRnn / ιζηζ / E / γίΛΐ less (c2), a primary monoamine containing a benzene ring is preferable, and benzylamine is most preferable, from the point of view of buckling resistance during coating, and resistance to water reddening and finished appearance of the resulting coating film. The number average molecular weight of the primary monoamine having a number average molecular weight of 300 or less (c2) is within the range of preferably 60 to 300, more preferably 75 to 250, and even more preferably 90 to 150, from the point of view of resistance to sagging during coating, and resistance to water reddening and the final appearance of the resulting coating film. Polyether amine ΍c3) The polyether amine (c3) is a polyether that has two or more ether linkages per molecule, and is an amine that has two or more amino groups and a number average molecular weight of 1000 or more and less than 6000. In particular, the number average molecular weight of the polyether amine (c3) is within the range of preferably 1000 to 5000, more preferably 2000 to 5000, and even more preferably 2000 to 4000, from the point of view of buckling resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film. From the point of view of buckling resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film, polyether amine (c3) is preferably a primary amine. The polyetheramine (c3) has two or more amino groups. From the point of view of sagging resistance during coating, resistance to water reddening, and the final appearance of the resulting coating film, the polyetheramine (c3) is most preferably at least one amine from the group consisting of a diamine and a triamine, and particularly preferably a triamine. Therefore, from the standpoint of buckling resistance during coating, water reddening resistance, and the final appearance of the resulting coating film, the polyether amine (c3) is preferably at least one amine selected from the group consisting of a primary diamine and a primary triamine, and more preferably a primary triamine. In the present invention, the primary diamine is an amine having two NH2 groups, and the primary triamine is an amine having three -NH2 groups. As for the polyether amine (c3), for example, an amine containing polyoxyalkylene can preferably be used. r 1 QRnn / ιζηζ / Ε / γίΛΐ From the point of view of buckling resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film, at least one amine compound selected from the group consisting of a polyoxyalkylene-containing diamine represented by formula (9) below (c3-1) and a polyoxyalkylene-containing polyamine having three or more amino groups represented by formula (12) below (c3-2) may be used preferably as the polyoxyalkylene-containing amine. Of these, the polyamine containing polyoxyalkylene having three or more amino (c3-2) groups may be particularly preferred from the point of view of sagging resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film. Diamine containing polyoxyalkylene (C3-1) The polyoxyalkylene (c3-l) containing diamine is a polyoxyalkylene containing diamine represented by formula (9) below. H2N—R3—1-O—R4-|---NH2(9) (where R3 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group and a tetramethylene group; R4 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group and a tetramethylene group; n represents an integer from 9 to 134, preferably 27 to 112, more preferably 27 to 89; n oxyalkylene (O-R4) units may be the same or different; when the oxyalkylene (O-R4) units are different from each other, the addition mode (polymerization mode) of the oxyalkylene (O-R4) units may be a random mode or a block shape). Specifically, as the polyoxyalkylene (c3-l) containing diamine, a polyoxyalkylene containing diamine represented by formula (10) below CH3ch3r 1 QRnn / ιζηζ / E / γίΛΐ (where c represents an integer from 16 to 102, preferably from 33 to 85, and more preferably from 33 to 68) and / or a polyoxyalkylene-containing diamine represented by formula (11) below (11) RI QRnn / I7P7 / E / YILI (where dyf each represents an integer from 1 to 20, preferably from 2 to 15, more preferably from 2 to 10; e represents an integer from 12 to 60, preferably from 15 to 50, more preferably from 25 to 45; d+f is within the range of 2 to 40, in particular, preferably 4 to 30, more preferably 4 to 20, even more preferably 4 to 8) may be used preferably. A commercially available product as a diamine containing polyoxyalkylene (c3-l) may be used. Examples of commercially available products include JEFFAMINE D2000 (number average molecular weight: 2000; in formula (10) above, c ~ 33), JEFFAMINE D4000 (number average molecular weight: 4000; in formula (10) above, c ~ 68), and JEFFAMINE ED-2003 (number average molecular weight: 2000; in formula (11) above, d+f ~ 6, e ~ 39), ELASTAMIN RT-1000 (number average molecular weight: 1000). Polyamine containing polyoxyalkylene (c3-2)As the polyamine containing polyoxyalkylene (c3-2), a polyamine containing polyoxyalkylene having three or more amino groups represented by formula (12) below (12) (where R5 represents a q-valent organic group having a carbon atom at a bonding site with the oxygen atom indicated in the formula, preferably a q-valent hydrocarbon group; R6 represents a C2-6 alkylene group, preferably a C2-4 alkylene group, more preferably at least one alkylene group selected from the group consisting of an ethylene group, a propylene group and a tetramethyl group; p represents an integer from 4 to 45, preferably 10 to 40, more preferably 15 to 30; q represents an integer of 3 or more, preferably from 3 to 6, more preferably 3 or 4; p oxyalkylene units (O-R6) may be equal or different;when the oxyalkylene (O-R6) units are different from each other, the addition form (polymerization form) of the oxyalkylene (O-R6) units can be a random form or a block form), and / or polyoxyalkylene-containing triamine represented by formula (13) below; ri QRnn / ιζηζ / E / γίΛΐ (where j, kyr each represent an integer from 5 to 60, preferably from 10 to 50, more preferably from 10 to 40; in particular, it is preferred that j+k+r be within the range of 17 to 102, preferably 33 to 86, and more preferably 33 to 68) may be used preferably. A commercially available product such as a polyamine containing polyoxyalkylene (c3-3) may be used. Examples of commercially available products include JEFFAMINE T-3000 (number average molecular weight: 3000; in formula (13) above, j+k+r ~ 50) and JEFFAMINE T5000 (number average molecular weight: 5000; in formula (13) above, j+k+r ~ 85). Reaction method The reaction of the polyisocyanate compound (el), the primary monoamine having a number average molecular weight of 300 or less (c2), and the polyether amine (c3) can be carried out by the method described above in the Reaction Method for (bl) to (b3) section in the first rheology control agent (B). With regard to the ratio of components (el) to (c3) when reacting components (el) to (c3), the proportion of polyetheramine (c3) is within the range of 10 to 30% by mass based on the total amount of components (el) to (c3) from the point of view of buckling resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film. Following the reaction of components (el) to (c3), the proportions of components (el) to (c3) are preferably within the following ranges based on the total amount of components (el) to (c3) from the point of view of sagging resistance during coating, water reddening resistance and the final appearance of the resulting coating film: Polyisocyanate compound (the): 30 to 60% by mass, preferably 30 to 55% by mass, and more preferably 30 to 45% by mass; Primary monoamine having a number average molecular weight of 300 or less (c2): 30 to 60% by mass, preferably 35 to 60% by mass, and more preferably 35 to 55% by mass; and Polyether amine (c3): 10 to 30% by mass, preferably more than 15% by mass and 30% by mass or less, and more preferably 18 to 28% by mass. Following the reaction of components (el) to (c3), the ratio of the total number of amino groups in the primary monoamine (c2) and the polyetheramine (c3) to the number of isocyanate groups in the polyisocyanate compound (el) (amino groups / isocyanate groups) is within the range of preferably 0.7 to 1.5, more preferably 0.9 to 1.1, and even more preferably 0.95 to 1.05, from the point of view of sagging resistance during coating, and resistance to water reddening and the final appearance of the resulting coating film. In the present invention, the second rheology control agent (C) may contain a reaction product of the polyisocyanate compound (el) and the primary monoamine (c2), or a reaction product of the polyisocyanate compound (el) and the polyetheramine (c3), other than the reaction product of the polyisocyanate compound (el), the primary monoamine (c2) and the polyetheramine (c3). Furthermore, the reaction of components (el) to (c3) is preferably carried out in the presence of a resin component, from the point of view of suppressing the aggregation of the reaction product. Examples of resin components used in the reaction of components (1e) to (c3) include acrylic resins, polyester resins, polyether resins, polycarbonate resins, polyurethane resins, epoxy resins, alkyd resins, and the like. Of these, acrylic resins are preferred in terms of sagging resistance during coating, water reddening resistance, and the final appearance of the resulting coating film. The resin component may be a binder component (A) or a resin component other than the binder component (A). Preferably, a film-forming resin, such as the secondary hydroxyl-containing acrylic resin (Al-1a) described above, other than the hydroxyl- and alkoxysilyl-containing acrylic resin (Al-1b) described above, and the secondary hydroxyl- and alkoxysilyl-containing acrylic resin (Al-1c) described above, is used as the resin component. When the reaction of components (el) to (c3) is carried out in the presence of the resin component, the mixing ratio of components (el) to (c3) with the resin component is preferably such that the ratio of the total mass of components (el) to (c3) to the mass of the resin component, i.e., the ratio of (the total mass of components (el) to (c3)) / (mass of the resin component), is preferably within the range of 1 / 99 to 15 / 85, and more preferably 2 / 98 to 12 / 88. In the present invention, when the reaction of the components (el) to (c3) is carried out in the presence of the resin component, the resin component is not included in the second rheology control agent (C). Provided the first rheology control agent (B) and the second rheology control agent (C) are different, the polyisocyanate (bl) of the first rheology control agent (B) and the polyisocyanate compound (el) of the second rheology control agent (C) may be the same or different, the primary monoamine having a number-average molecular weight of 300 or less (b2) of the first rheology control agent (B) and the primary monoamine having a number-average molecular weight of 300 or less (c2) of the second rheology control agent (C) may be the same or different, and the polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) of the first rheology control agent (B) and the polyetheramine having two or more amino groups having a number-average molecular weight of 1000 or more and less than 6000 (c3) of the second rheology control agent (C) can be the same or different. In one embodiment, the polyether amine having a number average molecular weight of more than 300 and less than 6000 (b3) of the first rheology control agent (B) differs from the polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) of the second rheology control agent (C).The polyether amine having a number-average molecular weight of more than 300 and less than 6000 (b3) of the first rheology control agent (B) contains a polyether amine having a number-average molecular weight of more than 300 and less than 1000; and this polyether amine having a number-average molecular weight of more than 300 and less than 1000 contains at least one amine compound selected from the group consisting of polyoxyalkylene-containing monoamine represented by formula (1) (b3-l), polyoxyalkylene-containing diamine represented by formula (3) (b3-2), and polyoxyalkylene-containing polyamine having three or more amino groups represented by formula (6) (b3-3). In another embodiment, the polyetheramine having a number average molecular weight of more than 300 and less than 6000 (b3) of the first rheology control agent (B) is the same as the polyetheramine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) of the second rheology control agent (C); however, the ratio of polyetheramine having a number average molecular weight of more than 300 and less than 6000 (b3) based on the total mass of (bl) to (b3) is different from the ratio of polyetheramine having a number average molecular weight of 1000 or more and less than 6000 (c3) based on the total mass of (l) to (c3). ri QRnn / ιζηζ / E / γίΛΐ Paint composition The paint composition of the present invention (hereinafter sometimes referred to simply as the paint of the present invention) is a paint composition containing the binder component (A), the first rheology control agent (B), and the second rheology control agent (C). From the point of view of sagging resistance during coating and resistance to water reddening and the final appearance of the resulting coating film, the content of the first rheology control agent (B) in the paint composition of the present invention is preferably within the range of 0.1 to 2 parts by mass, more preferably 0.1 to 1 parts by mass, and even more preferably 0.2 to 0.6 parts by mass, per 100 parts by mass of the total solids content of the binder component (A). From the point of view of sagging resistance during coating and resistance to water reddening and the final appearance of the resulting coating film, the content of the second rheology control agent (C) in the paint composition of the present invention is preferably within the range of 0.1 to 2 parts by mass, more preferably 0.1 to 1 parts by mass, and even more preferably 0.2 to 0.8 parts by mass, per 100 parts by mass of the total solids content of the binder component (A). In the paint composition of the present invention, the ratio between the content of the first rheology control agent (B) and the content of the second rheology control agent (C) is not particularly restricted. From the standpoint of sagging resistance during coating, resistance to water reddening, and the final appearance of the resulting coating film, for example, the mass ratio of the first rheology control agent (B) to the second rheology control agent (C) of (B):(C) is preferably 1:0.5 to 1:2, more preferably 1:1 to 1:2, and even more preferably 1:1 to 1:1.5. The paint composition of the present invention has excellent resistance to sagging during coating and is capable of forming a coating film with an excellent finish appearance and resistance to water reddening. This is due, for example, to the use of the second rheology control agent (C), as the first rheology control agent (B) and the second rheology control agent (C) are used in combination. The second rheology control agent (C) is a reaction product of the polyisocyanate compound (el), with the primary monoamine having a number-average molecular weight of 300 or less (c2), and the polyether amine having two or more amino groups and a number-average molecular weight of 1000 or more and less than 6000 (c3). This second rheology control agent (C) contained in the paint composition is intended to act as a rheology control agent with a fine crystalline structure, forming a dense network within the paint composition to exert sag control capabilities, thereby improving sag resistance during coating and the final appearance of the resulting coating film. Furthermore, the fine crystalline structure enhances solubility during coating film formation; therefore, a coating film with excellent resistance to water reddening is formed. Furthermore, it is assumed that the first rheology control agent (B) and the second rheology control agent (C), when used in combination, form two networks with different dissolution temperatures in the paint composition, thereby improving flowability and further enhancing the appearance of the finish while ensuring sag control capability. The paint composition of the present invention may further contain, if necessary, color pigments, effect pigments, dyes, or the like. The paint composition of the present invention may also contain extender pigments, ultraviolet absorbers, light stabilizers, catalysts, antifoaming agents, rheology control agents other than the first rheology control agent (B) and the second rheology control agent (C), anticorrosives, surface adjustment agents, organic solvents, and the like. Examples of color pigments include titanium oxide, zinc white, carbon black, cadmium red, molybdenum red, chromium yellow, chromium oxide, Prussian blue, cobalt blue, azo pigments, phthalocyanine pigments, quinacridone pigments, isoindoline pigments, threne pigments, perylene pigments, and the like. Examples of effect pigments include aluminum powder, mica powder, titanium oxide-coated mica powder, and the like. Examples of extender pigments include talc, clay, kaolin, barite, barium sulfate, barium carbonate, calcium carbonate, alumina white, and the like. The above pigments can be used individually or in a combination of two or more. When the paint composition of the present invention is used as a transparent paint and contains a pigment, the pigment is preferably used in an amount such that the transparency of the resulting coating film is not impaired. For example, the amount of pigment is generally within the range of 0.1 to 20% by mass, preferably 0.3 to 10% by mass, and more preferably 0.5 to 5% by mass, based on the total solids content in the paint composition. When the paint composition of the present invention is used as colored paint and contains a pigment, the amount of pigment is generally within the range of 1 to 200% by mass, preferably 2 to 100% by mass, and more preferably 5 to 50% by mass, based on the total solids content in the paint composition. Solids content, as used in this document, refers to the non-volatile components of the resin, curing agent, pigment, and the like that remain in the paint composition after drying the paint composition at 110°C for 1 hour. For example, the total solids content of the paint composition can be calculated as follows. The paint composition is measured in a heat-resistant container, such as an aluminum foil cup, spread on the bottom of the container, and then dried at 110°C for 1 hour. The mass of the components remaining in the paint composition after drying is then measured to determine the ratio of the mass of the components remaining after drying to the total mass of the paint composition before drying. Examples of ultraviolet absorbers include well-known ultraviolet absorbers such as benzotriazole absorbers, triazine absorbers, salicylic acid derivative absorbers, benzophenone absorbers, and similar ultraviolet absorbers. These ultraviolet absorbers can be used individually or in combination with one or more of them. When the paint composition of the present invention contains an ultraviolet absorber, the amount of ultraviolet absorber is generally within the range of 0.1 to 10% by mass, preferably 0.2 to 5% by mass, and more preferably 0.3 to 2% by mass, based on the total solids content in the paint composition. Examples of light stabilizers include well-known light stabilizers, such as hindered amine light stabilizers. The hindered amine light stabilizer for use is preferably one with low basicity from a lifetime perspective. Examples of such hindered amine light stabilizers include adiated hindered amines, amino ether-based hindered amines, and similar compounds. Specific examples include HOSTAVIN 3058 (trade name, produced by Clariant), TINUVIN 123 (trade name, produced by BASF), and similar products. When the paint composition of the present invention contains a light stabilizer, the amount of light stabilizer is generally within the range of 0.1 to 10% by mass, preferably 0.2 to 5% by mass, and more preferably 0.3 to 2% by mass, based on the total solids content in the paint composition. Examples of catalysts include known catalysts. For example, when the paint composition of the present invention contains the polyisocyanate compound and / or the blocked polyisocyanate compound mentioned above as a crosslinking agent (A2), the paint composition of the present invention may contain a urethane reaction catalyst. Specific examples of urethane reaction catalysts include organometallic compounds, such as tin octylate, dibutyltin diacetate, dibutyltin di(2-ethylhexanoate), dibutyltin dilaurate, dioctyltin diacetate, dioctyltin di(2-ethylhexanoate), dibutyltin oxide, dibutyltin sulfide, dioctyltin oxide, RI QRnn / I7P7 / E / YILI fatty acid salts of dibutyltin, lead 2-ethylhexanoate, zinc octylate, zinc naphthenate, zinc fatty acid salts, bismuth octanoate, bismuth 2-ethylhexanoate, bismuth oleate, bismuth neodecanoate, bismuth versatate, bismuth naphthenate, cobalt naphthenate, calcium octylate, copper naphthenate, and tetra(2-ethylhexyl)titanate; tertiary amine; and the like. These may be used alone or in a combination of two or more. When the paint composition of the present invention contains a urethane reaction catalyst described above, the amount of the urethane reaction catalyst is preferably within the range of 0.005 to 2% by mass, and more preferably from 0.01 to 1% by mass, based on the total solids content in the paint composition of the present invention. When the paint composition of the present invention contains a urethane reaction catalyst described above, the paint composition of the present invention may contain acetic acid, propionic acid, butyric acid, isopentanoic acid, hexanoic acid, 2-ethylbutyric acid, naphthenic acid, octyl acid, nonanoic acid, decanoic acid, 2-ethylhexanoic acid, isooctanoic acid, isononanoic acid, lauric acid, palmitic acid, stearic acid, oleic acid, linoleic acid, neodecanoic acid, versatic acid, isobutyric anhydride, itaconic anhydride, acetic anhydride, citraconic anhydride, propionic anhydride, maleic anhydride, butyric anhydride, citric anhydride, trimellitic anhydride, pyromellitic anhydride, italic anhydride or similar organic acid; hydrochloric acid, phosphoric acid or similar inorganic acid; acetylacetone, an imidazole compound or a similar metal coordination compound;or similar, from the point of view of storage stability, curability, or similar.; When a melamine resin described above is used as the crosslinking agent (A2) in the paint composition of the present invention, the paint composition of the present invention may contain, as a curing catalyst, p-toluenesulfonic acid, dodecylbenzenesulfonic acid, dinonylnaphthalenesulfonic acid, or similar sulfonic acid; monobutyl phosphate, dibutyl phosphate, mono(2-ethylhexyl phosphate), di(2-ethylhexyl phosphate), or similar alkyl phosphoric esters; a salt of said acid with an amine compound; or the like. When the paint composition of the present invention contains a curing catalyst for the melamine resin, the amount of curing catalyst for the melamine resin is preferably within the range of 0.1 to 2% by mass, more preferably 0.2 to 1.7% by mass, and even more preferably 0.3 to 1.4% by mass, based on the total solids content in the paint composition of the present invention. The substrate to be coated with the paint composition of the present invention is not particularly limited. Examples of substrates include exterior panel parts of automobile bodies such as passenger cars, trucks, motorcycles, and buses; ri QRnn / ιζηζ / E / γίΛΐ automotive parts; exterior panel parts of household appliances such as mobile phones and audio equipment; and the like. Exterior panel parts of automobile bodies and automotive parts are particularly preferred. The substrate material is not particularly limited. Examples include metallic materials such as iron, aluminum, brass, copper, tinplate, stainless steel, galvanized steel, zinc-alloyed steel (Zn-Al, Zn-Ni, Zn-Fe, or similar); plastic materials such as polyethylene resins, polypropylene resins, acrylonitrile butadiene styrene (ABS) resins, polyamide resins, acrylic resins, vinylidene chloride resins, polycarbonate resins, polyurethane resins, epoxy resins, and similar resins, and various types of FRP; inorganic materials such as glass, cement, and concrete; wood; textile materials (e.g., paper and fabric); and similar materials. Of these, metallic and plastic materials are preferred. The substrate may be a metallic material mentioned above, or a vehicle body, etc., formed from a metallic material mentioned above that has undergone a surface treatment, such as phosphoric acid salt treatment, chromate treatment, or compound oxide treatment. The substrate may also be a metallic material, vehicle body, or similar material mentioned above onto which a coating film of various electroplated paints has been formed. The substrate may also be a metallic material, vehicle body, or similar material mentioned above onto which a lower coating film of various electroplated paints has been formed, and an intermediate coating film has been formed on top of the lower coating film.The substrate can also be a plastic material, such as a bumper, on which a primer coating film has been formed. The method of applying a paint containing the paint composition of the present invention (hereinafter sometimes referred to simply as the paint of the present invention) is not particularly limited. For example, air spray coating, airless spray coating, rotary atomizing coating, curtain coating, or other coating methods may be used to form a wet coating film. In these coating methods, an electrostatic charge may be applied, if necessary. Of these methods, air spray coating or rotary atomizing coating are particularly preferred. The paint of the present invention is generally applied preferably to a cured film thickness of 10 to 60 µm, and more preferably from 25 to 55 µm.In particular, the thickness of the cured film is preferably 35 to 55 pm, and particularly preferably 41 to 50 pm. When an air-spray coating is performed, a coating by RI QRnn / I7P7 / E / YILI airless spraying or rotary atomizing coating, it is preferred that the paint of the present invention be suitably adjusted beforehand by adding a solvent, such as an organic solvent, so that it has a viscosity suitable for the coating, which is generally from 15 to 60 seconds, and preferably from 20 to 40 seconds, measured with a Ford Cup No. 4 viscometer at 20°C. The wet coating film obtained by applying the paint of the present invention to a substance can be cured by heating. Heating can be carried out using known heating means. For example, a drying oven, such as a hot air oven, an electric oven, or an infrared induction heating oven, can be used. The heating temperature is not particularly limited and is, for example, within the range of 60 to 160°C, and preferably 80 to 140°C. The heating time is not particularly limited and is, for example, within the range of 10 to 60 minutes, and preferably 15 to 30 minutes. The paint of the present invention, which is a paint composition capable of forming a coating film that has both excellent resistance to water reddening and a finished appearance, can be suitable for use, in particular, as a clear topcoat. The paint of the present invention can be suitable for use as paint, particularly for automobiles. Method for forming a multilayer coating film The method for forming a multi-layer coating film in which the paint of the present invention is applied as the top clear coat paint may be a method for forming a multi-layer coating film comprising sequentially forming on a substrate at least one colored base coat paint layer and at least one clear coat paint layer, wherein the paint composition of the present invention is applied as the clear coat paint to form the top layer. Specific examples of such a method include a method for forming a multilayer coating film by a 1-2-layer baking method, wherein colored basecoat paint is applied to a substrate on which an electrodeposited coating film and / or an intermediate coating film has been applied, the resulting uncured coating film is preheated, as required, to, for example, 40 to 90°C for approximately 3 to 30 minutes to accelerate solvent vaporization in the colored basecoat paint, and the paint of the present invention is then applied as a clearcoat paint to the uncured colored basecoat film, followed by simultaneous curing of the colored basecoat film and the clearcoat film. ri QRnn / ιζηζ / E / γίΛΐ The paint of the present invention can also be suitable for use as a clear topcoat paint for topcoating in a 2-3-layer baking method or a 1-3-layer baking method. The basecoat paint used in the manner described above may be a commonly known thermosetting basecoat paint. Specific examples include paints obtained by the appropriate combination of a crosslinking agent, such as an amino resin, a polyisodinate compound, or a blocked polyisocyanate compound, with reactive functional groups from a base resin, such as an acrylic resin, a polyester resin, an alkyd resin, or a urethane resin. As with basecoat paint, other types of paints can also be used, such as water-based paint, organic solvent-based paint, or powder coating. From the perspective of the finished appearance of the coating film and a reduction in environmental impact, water-based paint is preferable. When two or more transparent coating films are formed in the method for forming a multi-layer coating film, the paint of the present invention or known thermosetting transparent coating paint can be used as a clear coat paint to form a layer distinct from the top layer. EXAMPLES The present invention is described in more detail below with reference to production examples, examples, and comparative examples. However, the present invention is not limited to these. In each example, parts and percentages are expressed by mass unless otherwise specified, and film thickness is the thickness of a cured coating film. Production of acrylic resin containing hydroxy (Al-1-1) PRODUCTION EXAMPLE 1 Twenty-seven parts of Swasol 1000 (trade name, produced by Cosmo Gil Co., Ltd., an aromatic organic solvent) and five parts of propylene glycol monomethyl ether acetate were placed in a reaction vessel equipped with a thermometer, a thermostat, a stirrer, a reflux condenser, a nitrogen inlet tube, and a dropping funnel. While nitrogen gas was blown into the reaction vessel, the mixture was stirred at 150°C. A mixture of RI QRnn / I7P7 / E / YILI monomers comprising 20 parts styrene, 32.5 parts 2-hydroxypropyl acrylate, 46.5 parts isobutyl methacrylate, 1.0 part acrylic acid and 1.5 parts ditertiary amyl peroxide (polymerization initiator) at a constant rate for a period of 4 hours. The resulting mixture was aged at 150°C for 1 hour, cooled and further thinned with the addition of 34 parts butyl acetate, thus obtaining an acrylic resin solution containing hydroxy(Al-1-1) having a solids concentration of 60% by mass. The hydroxy-containing acrylic resin obtained (Al-1-1) had a hydroxy value of 140 mg KOH / g, an acidity value of 8.0 mg KOH / g, a weight average molecular weight of 10000, and a glass transition temperature of 39°C. Production of acrylic resin containing hydroxy (Al-1-2) PRODUCTION EXAMPLE 2 Thirty parts of Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., an aromatic organic solvent) and ten parts of n-butanol were placed in a reaction vessel equipped with a thermometer, thermostat, stirrer, reflux condenser, nitrogen inlet tube, and a dropping funnel. While nitrogen gas was blown into the reaction vessel, the mixture was stirred at 125°C. A monomer mixture comprising 30 parts of γ-methacryloxypropyltrimethoxysilane, 32.5 parts of 2-hydroxypropyl acrylate, 20 parts of styrene, 17.5 parts of isobutyl methacrylate, and 7.0 parts of 2,2'-azobis(2-methylbutyronitrile) (polymerization initiator) was added dropwise at a constant rate for a period of four hours. The resulting mixture was then aged at 125°C for 30 minutes and a solution containing 0.5 parts of 2,2'-azobis(2-methylbutyronitrile) and 5.0 parts of Swasol 1000 (trade name, produced by Cosmo Oil Co.)., Ltd., an aromatic organic solvent) was added dropwise at a constant rate for 1 hour. The resulting mixture was aged at 125°C for 1 hour, cooled, and further diluted with the addition of 8 parts of butyl acetate, yielding a hydroxy (Al-1-2)-containing acrylic resin solution (a secondary hydroxy and alkoxysilyl-containing acrylic resin solution) with a solids concentration of 65% by mass. The resulting hydroxy (Al-1-2)-containing acrylic resin had an alkoxysilyl group content of 1.21 mmol / g, a hydroxyl value of 140 mg KOH / g, a weight-average molecular weight of 7000, and a glass transition temperature of 18°C. ri QRnn / ιζηζ / E / γίΛΐ Production of acrylic resin containing hydroxy (Al-1-3) PRODUCTION EXAMPLE 3 Thirty parts of Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., an aromatic organic solvent) and ten parts of n-butanol were placed in a reaction vessel equipped with a thermometer, thermostat, stirrer, reflux condenser, nitrogen inlet tube, and dropping funnel. While nitrogen gas was blown into the reaction vessel, the mixture was stirred at 125°C. A monomer mixture comprising 30 parts of γ-methacryloxypropyltrimethoxysilane, 32.5 parts of 2-hydroxyethyl methacrylate, 20 parts of styrene, 17.5 parts of isobutyl methacrylate, and 7.0 parts of 2,2'-azobis(2-methylbutyronitrile) (polymerization initiator) was added to the same mixture dropwise at a constant rate for a period of four hours. The resulting mixture was then aged at 125°C for 30 minutes and a solution containing 0.5 parts of 2,2'-azobis(2-methylbutyronitrile) and 5.0 parts of Swasol 1000 (trade name, produced by Cosmo Oil Co.).A hydroxyl group (an aromatic organic solvent) was added dropwise at a constant rate for 1 hour. The resulting mixture was then aged at 125°C for 1 hour, cooled, and further diluted with the addition of 8 parts of butyl acetate, yielding a hydroxy (Al-1-3) containing acrylic resin solution (primary hydroxy and alkoxysilyl containing acrylic resin solution) with a solids concentration of 65% by mass. The resulting hydroxy (Al-1-3) containing acrylic resin had an alkoxysilyl group content of 1.21 mmol / g, a hydroxyl value of 140 mg KOH / g, a weight-average molecular weight of 7000, and a glass transition temperature of 39°C. Production of the first rheology control agent(B) PRODUCTION EXAMPLE 4 150 parts (solids content: 90 parts) of the hydroxy(Al-1-1) acrylic resin solution obtained in Production Example 1, 17 parts of Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., an aromatic organic solvent), and 10 parts of n-butanol were placed in a reaction vessel equipped with a stirrer and a dropping funnel. Then, an amine mixture comprising 5.44 parts of benzylamine and 0.20 parts of JEFFAMINE D-400 (trade name, produced by Huntsman Corporation, a polyoxypropylene-containing diamine, number-average molecular weight: 400) was added to the same with stirring at room temperature. Subsequently, a mixture of 4.36 parts hexamethylenediisocyanate and 13 parts butyl acetate was added dropwise with stirring to obtain a first rheology control agent dispersion (BM-1). The first rheology control agent dispersion obtained RI QRnn / I7P7 / E / YILI (BM-1) had a solids content of 50%. In the first rheology control agent dispersion obtained (BM-1), the total mass of components (bl) to (b3) was 10 parts by mass, the mass of the acrylic resin containing hydroxy (Al-1-1), which is a resin component, was 90 parts by mass, and the ratio of (the total mass of components (bl) to (b3)) / (the mass of the resin component) was 10 / 90. PRODUCTION EXAMPLES 5 to 11 The first dispersions of rheology control agents (BM-2) to (BM-8) were obtained in the same manner as in production example 4, except that the formulations shown in Table 1 were used. The first dispersions of rheology control agents obtained (BM-2) to (BM-8) had a solids content of 50%. The quantities of the components shown in Table 1 are expressed as solids content by mass. ri QRnn / ιζηζ / E / γίΛΐ TABLE 1 Example Production 4 5 6 7 Rheology Control Agent Dispersion Name BM-1 BM-2 BM-3 BM-4 Resin Component Hydroxy-Containing Resin (Al) Hydroxy-Containing Acrylic Resin (Al-1) Hydroxy-Containing Acrylic Resin (Al1-1) 90 90 95 90 Rheology Control Agent (B) Amine Mixture Primary Monoamine Having a Number Average Molecular Weight of 300 or Less (b2) Benzylamine 5.44 5.28 2.64 4.97 Polyetheramine Having a Number Average Molecular Weight Diamine Containing Polyoxyalkylene Chains JEFFAMINE D-400 0.2 0.4 0.2 0.8 Number of more than 300 and less than 6000 (b3) Polyisocyanate compound (bl) Aliphatic polyisocyanate compound Hexamethylene diisocyanate 4.36 4.32 2.16 4.23 Proportion of each component based on the total mass of components (bl) to (b3) (% by mass) Polyisocyanate compound (bl) 43.6 43.2 43.2 42.3 Primary monoamine having a number-average molecular weight of 300 or less (b2) 54.4 52.8 52.8 49.7 Polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) 2 4 4 8 Total mass of components (bl) to (b3) 10 10 5 10 Mass of resin component 90 90 95 90 Ratio (total mass of components (bl) to (b3)) / (mass of resin component) 10 / 90 10 / 90 5 / 95 10 / 90 ri QRnn / ιζηζ / Ε / γίΛΐ ri QRnn / ιζηζ / Ε / γίΛΐ TABLE 1 (continued-l) Example Production 8 9 10 11 Rheology Control Agent Dispersion Name BM-5 BM-6 BM-7 BM-8 Resin Component Hydroxy-Containing Resin (Al) Hydroxy-Containing Acrylic Resin (Al-1) Hydroxy-Containing Acrylic Resin (Ali-i) 90 90 90 90 Rheology Control Agent (B) Amine Mixture Primary Monoamine Having a Number Average Molecular Weight of 300 or Less (b2) Benzylamine 5.36 5.36 5.37 5.36 Polyetheramine Having a Number Average Molecular Weight of More Than 300 and Less Than 6000 (b3) Diamine Containing Polyoxyalkylene Chains JEFFAMINE D-2000 (*1) 0.4 Triamine Containing Polyoxyalkylene Chains JEFFAMINE T-3000 (*2) 0.4 JEFFAMINE T-5000 (*3) 0.4 Monoamine containing polyoxyalkylene chains JEFFAMINE M-1000 (*4) 0.4 Polyisocyanate compound (bl) Aliphatic polyisocyanate compound Hexamethylene diisocyanate 4.24 4.24 4.23 4.24 Proportion of each component based on the total mass of the components (bl) to (b3) (% by mass) Polyisocyanate compound (bl) 42.4 42.4 42.3 42.4 Primary monoamine having an average molecular weight 53.6 53.6 53.7 53.6. in number of 300 or less (b2) Polyetheramine having a number average molecular weight of more than 300 and less than 6000 (b3) 4 4 4 4 Total mass of components (bl) to (b3) 10 10 10 10 Mass of resin component 90 90 90 90 Ratio (total mass of components (bl) to (b3)) / (mass of resin component) 10 / 90 10 / 90 10 / 90 10 / 90 ri QRnn / ιζηζ / E / γίΛΐ The asterisks (*) in Table 1 mean the following. * 1: JEFFAMINE D-2000: trade name, produced by Huntsman Corporation, polyoxyalkylene-containing diamine, number-average molecular weight of 2000 * 2: JEFFAMINE T-3000: trade name, produced by Huntsman Corporation, polyoxyalkylene-containing triamine, number-average molecular weight of 3000 * 3: JEFFAMINE T-5000: trade name, produced by Huntsman Corporation, polyoxyalkylene-containing triamine, number-average molecular weight of 5000 * 4: JEFFAMINE M-1000: trade name, produced by Huntsman Corporation, polyoxyalkylene-containing monoamine, number-average molecular weight of 1000 Production of the second rheology control agent (C) PRODUCTION EXAMPLE 12 158.3 parts (solids content: 95.0 parts) of the acrylic resin solution containing hydroxy(Al-1-1) obtained in the production example, 15.2 parts of Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., an aromatic organic solvent), and 10 parts of n-butanol were placed in a reaction vessel equipped with a stirrer and a dropping funnel. Then, an amine mixture comprising 2.44 parts of benzylamine and 0.6 parts of JEFFAMINE D-2000 (trade name, produced by Huntsman Corporation, a polyoxypropylene-containing diamine, number-average molecular weight: 2000) was added to the same with stirring at room temperature. Subsequently, a mixture of 1.96 parts of hexamethylene diisocyanate and 11.5 parts of Swasol 1000 (trade name, produced by Cosmo Oil Co., Ltd., an aromatic organic solvent) was added dropwise with stirring to obtain a dispersion of the rheology control agent (CM-1).The rheology control agent dispersion obtained (CM-1) had a solids content of 50%. In the rheology control agent dispersion obtained (CM-1), the total mass of components (el) to (c3) was 5.0 parts by mass, the mass of the hydroxy-containing acrylic resin (Al-1-1), which is a resin component, was 95.0 parts by mass, and the ratio of (the total mass of components (el) to (c3)) / (the mass of the resin component) was 5 / 95. PRODUCTION EXAMPLES 13 to 20 The second rheology control agent dispersions (CM-2) to (CM-9) were obtained in the same manner as in production example 12, except that the 10 formulations shown in Table 2 were used. The second rheology control agent dispersions obtained (CM-2) to (CM-9) had a solids content of 50%. The quantities of the components shown in Table 2 are expressed as solids content by mass. ri QRnn / ιζηζ / E / γίΛΐ TABLE 2 Example Production 12 13 14 15 16 Rheology Control Agent Dispersion Name CM-1 CM-2 CM-3 CM-4 CM-5 Resin Component Resin Containing Hydroxy (Al) Acrylic Resin Containing Hydroxy (Al-1) Acrylic Resin Containing Hydroxy (Al-1-1) 95 95 95 95 95 Rheology Control Agent (C) Amine Mixture Primary Monoamine Having a Number Average Molecular Weight of 300 or Less (c2) Benzylamine 2.44 2.19 2.44 2.19 Octylamine 2.35 Polyetheramine Having Two or More Amino Groups and a Molecular Weight Diamine Containing Polyoxyalkylene Chains 0 JEFFAMINE D-2000 0.6 1.0 number average of 1000 or more and less than 6000 (c3) Triamine containing polyoxyalkylene chains 0 JEFFAMINE T-3000 (*2) 0.6 1.0 1.0 Polyisocyanate compound (el) Aliphatic polyisocyanate compound Hexamethylene diisocyanate 0 1.96 1.81 1.96 1.81 1.65 Proportion of each component based on the total mass of components (el) to (c3) (% by mass) Polyisocyanate compound (el) 39.3 36.1 39.3 36.1 33.1 Primary monoamine having a number average molecular weight of 300 or less (c2) 48.7 43.9 48.7 43.9 46.9 Polyetheramine having two or more amino groups and a number average molecular weight in Number of 1000 or more and less than 6000 (c3) 12 20 12 20 20 Total mass of components (el) to (c3) 5.0 5.0 5.0 5.0 5.0 Mass of resin component 95.0 95.0 95.0 95.0 95.0 Ratio (total mass of components (el) to (c3)) / (mass of resin component) 5 / 95 5 / 95 5 / 95 5 / 95 5 / 95 RI QRnn / I7P7 / E / YILI TABLE 2 (continued-1) Example Production 17 18 19 20 Rheology Control Agent Dispersion Name CM-6 CM-7 CM-8 CM-9 Resin Component Resin Containing Hydroxy (Al) Acrylic Resin Containing Hydroxy (Al-1) Acrylic Resin Containing Hydroxy (Al-1-1) 97.5 95 95 95 Rheology Control Agent (C) Amine Mixture Primary Monoamine Having a Number Average Molecular Weight of 300 or Less (c2) Benzylamine 1.1 1.95 2.19 2.21 Polyetheramine Having Two or More Amino Groups and a Number Average Molecular Weight of 1000 or More and Less than 6000 (c3) Diamine Containing Polyoxyalkylene Chains 0 JEFFAMINE D-2000 0.50 Triamine Containing Polyoxyalkylene Chains 0 JEFFAMINE T-3000 (*2) 0.5 1.4 0.50 JEFFAMINE T-5000 (*3) 1.0 Polyisocyanate compound (el) Aliphatic polyisocyanate compound Hexamethylene diisocyanate 0 0.9 1.65 1.81 1.79 Proportion of each component based on the total mass of components (el) to (c3) (% by mass) Polyisocyanate compound (el) 36.0 33.0 36.1 35.7 Primary monoamine having a number average molecular weight of 300 or less (c2) 44.0 39.0 43.9 44.3. ai QAnn / ιζηζ / E / γίΛΐ Polyether amine having two or more amino groups and a number average molecular weight of 1000 or more and less than 6000 (c3) 20 28 20 20 Total mass of components (el) to (c3) 2.5 5.0 5.0 5.0 Mass of resin component 97.5 95 95 95 Ratio (total mass of components (el) to (c3)) / (mass of resin component) 2.5 / 97.5 5 / 95 5 / 95 5 / 95 Production of the paint composition: Part 1 EXAMPLE 1 84.5 parts (solids content: 50.7 parts) of the hydroxy(Al-1-1)-containing acrylic resin solution obtained in Production Example 1, 6.7 parts (solids content: 4 parts) of U-VAN 20SE60 (trade name, produced by Mitsui Chemicals, Inc., a melamine resin, solids content: 60%), 6 parts (solids content: 3 parts, wherein the rheology control agent component (B) constitutes 0.3 parts, and the hydroxy(Al-1-1)-containing acrylic resin constitutes 2.7 parts) of the first rheology control agent dispersion solution (BM-1) obtained in Production Example 4, 16 parts (solids content: 8 parts, wherein the rheology control agent component (C) constitutes 0.4 parts, and the hydroxy(Al-1-1)-containing acrylic resin constitutes 7.6 parts) of the rheology control agent dispersion solution (BM-1) obtained in Production Example 4 parts) of the second rheology control agent dispersion solution (CM-1) obtained in production example 12, 0.4 parts (solids content: 0.2 parts) of BYK-300 (trade name, produced by BYK-Chemie, a surface adjusting agent, active ingredient: 52%) and 0.3 parts (solids content: 0.1 parts) of NACURE 5523 (trade name, amine salt of dodecylbenzenesulfonic acid, catalyst, active ingredient: 35%, produced by King Industries, Inc.) were uniformly mixed to obtain a main agent. The main agent and 35 parts of Sumidur N3300 (trade name, produced by Sumika Covestro Urethane Co., Ltd., a hexamethylene diisocyanurate isocyanurate, solids content: 100%), which is a curing agent (crosslinking agent (A2)), were mixed uniformly immediately before application; and butyl acetate was further added to adjust the viscosity to 30 seconds, measured with a Ford Cup No. 4 at 20°C, thus obtaining paint composition No. 1. EXAMPLES 2 to 25 vs. COMPARATIVE EXAMPLES 1 to 4 Paint compositions No. 2 through 29 with a viscosity of 30 seconds measured with a No. 4 Ford Cup at 20°C were obtained in the same manner as in Example 1, except that the formulations shown in Table 3 below were used. The quantities of the components shown in Table 3 are expressed as solids content by mass. Test panel preparation: Part 1 Test panel preparation for examples 1 to 25 and comparative examples 1 to 4 Preparation of the test panel for the evaluation of the final appearance and resistance to water reddening. Elecron GT-10 (trade name, produced by Kansai Paint Co., Ltd., cationic electroplating paint) was applied by electroplating to a zinc phosphate-treated cold-rolled steel plate (10 cm x 15 cm) to a dry film thickness of 20 µm and cured by heating to 170°C for 30 minutes. Subsequently, WP-306T (trade name, produced by Kansai Paint Co., Ltd., melamine polyester resin-based aqueous intermediate paint) was electrostatically applied to the electroplating film using a rotary atomizing electrostatic coating machine to a cured film thickness of 30 µm and allowed to rest for 5 minutes, followed by preheating to 80°C for 3 minutes and then heating to 140°C for 30 minutes, thus preparing a test substrate. Subsequently, WBC-713T No. 202 (trade name, produced by Kansai Paint Co., Ltd.A water-based acrylic melamine resin-based basecoat paint (coat color: black) was electrostatically applied to the test substrate held in a vertical position using a rotary atomizing electrostatic coating machine to a cured film thickness of 15 µm. The resulting test substrate was allowed to stand for 5 minutes and then preheated in a vertical position to 80°C for 3 minutes. Subsequently, paint composition No. 1 was electrostatically applied to the uncured basecoat film in a vertical position using a rotary atomizing electrostatic coating machine to a dry film thickness of 45 µm to form a clear coating film.The resulting product was left to stand for 7 minutes and heated to 140°C for 30 minutes (holding time) in a vertical state to cure the base coating film and the transparent coating film, thus preparing a test panel of example 1. Test panels of paint compositions No. 2 to 29 were prepared in the same manner as in the preparation of the test panel of paint composition No. 1, except RI QRnn / Ι7Π7 / Ε / ΥΙΛΙ that each of the paint compositions No. 2 to 29 were used. Preparation of the test panel for the evaluation of buckling resistance Elecron GT-10 (trade name, produced by Kansai Paint Co., Ltd., cationic electroplating paint) was applied by electroplating to a zinc phosphate-treated cold-rolled steel plate (11 cm x 45 cm) to a dry film thickness of 20 µm and cured by heating to 170°C for 30 minutes. Subsequently, WP-306T (trade name, produced by Kansai Paint Co., Ltd., melamine polyester resin-based aqueous intermediate paint) was electrostatically applied to the electroplating film using a rotary atomizing electrostatic coating machine to a cured film thickness of 30 µm and allowed to rest for 5 minutes, followed by preheating to 80°C for 3 minutes and then heating to 140°C for 30 minutes, thus preparing a test substrate.Subsequently, 21 perforations with a diameter of 5 mm were formed in a row at 2 cm intervals, 3 cm from the edge, on one longitudinal side of the test substrate. Then, WBC-713T No. 202 (trade name, produced by Kansai Paint Co., Ltd., waterborne acrylic melamine resin-based basecoat paint, coating color: black) was electrostatically applied to the vertically held test substrate using a rotary atomizing electrostatic coating machine to a cured film thickness of 15 µm. The resulting test substrate was allowed to stand for 5 minutes and then preheated vertically to 80°C for 3 minutes. Next, paint composition No.1. The uncured coating film was applied in a vertical state using a rotary atomizing electrostatic coating machine to a film thickness of approximately 30 µm to 60 µm with a gradient in the longitudinal direction. The resulting product was allowed to stand for 7 minutes at room temperature and then heated to 140°C for 30 minutes (holding time) in a vertical state to cure the base coating film and the clear coating film, thus preparing a test panel of Example 1. Test panels of paint compositions No. 2 to 29 were prepared in the same way as in the preparation of the test panel of paint composition No. 1, except that each of the paint compositions No. 2 to 29 was used. The previously obtained test panels were evaluated using the test methods described below. Table 3 shows the evaluation results along with the paint composition formulations. Test method Finished appearance: The final appearance of each test panel was evaluated based on a long wave (LW) value measured using a wave scanner (trade name, produced by BYK Gardner). The lower the LW value, the smoother the coating surface. Water reddening resistance: The water reddening resistance of each test panel was evaluated based on the difference in L* values ​​measured with a CM-512m3 (trade name, produced by Konica Minolta, Inc., a multi-angle spectrophotometer) before and after immersion in hot water. In this test, the L* value was obtained by summing the L* values ​​obtained when the panel was illuminated with standard D65 illuminant from three angles: 25° (highlighting direction), 45°, and 75° (downward direction), relative to the angle of reception (the direction perpendicular to the coated surface was considered 0°). After the L* values ​​were measured, the test panel was immersed in hot water at 40°C for 10 days. The L* values ​​of the test panel were measured after immersion, and the difference AL* between the L* values ​​before and after immersion was calculated.A smaller AL* value indicates less reddening of the coating due to immersion in hot water and represents greater resistance to reddening with water. Buckling resistance: Each test panel was examined to determine the areas where 3 mm of buckling of the coating composition was observed from the bottom of each drill hole. Buckling resistance was assessed by measuring the film thickness (buckling limit film thickness (pm)) in these areas. The greater the buckling limit film thickness, the better the buckling resistance. ri QRnn / ιζηζ / E / γίΛΐ TABLE 3 Example 1 2 3 4 5 6 Paint Composition No. 1 2 3 4 5 6 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al1) Hydroxy-containing acrylic resin (Al-11) 50.7 50.7 50.7 50.7 50.7 50.7 Crosslinking Agent (A2) Amino resin U-VAN 20SE60 4 4 4 4 4 4 First Dispersion of Rheology Control Agent Name BM-1 BM-2 BM-2 BM-2 BM-2 BM-2 Quantity 3 3 3 3 3 3 Second Dispersion of Rheology Control Agent Name CM-1 CM1 CM-2 CM-3 CM-4 CM-5 Quantity 8 0.20 0.20 0.20 0.20 0.20 Surface Adjustment Agent BYK- 300 0.2 0.2 0.2 0.2 0.2 0.2 Catalyst NACUR E 5523 0.1 0.1 0.1 0.1 0.1 0.1 Curing agent Binder component (A) Crosslinking agent (A2) Polyisocyanate compound 0 Sumidur N3300 35 35 35 35 35 35 Content of components (A), (B), and (C) (parts Binder component (A) Hydroxy-containing resin (Al) 61 61 61 61 61 61 Crosslinking agent (A2) 39 39 39 39 39 39 First rheology control agent (B) 0.3 0.3 0.3 0.3 0.3 0.3. RI QRnn / I7P7 / E / YILI (in mass) Second rheology control agent (C) 0.4 0.4 0.4 0.4 0.4 0.4 Results Finished appearance (LW) 6.0 5.8 5.5 5.6 4.6 4.6 of Buckling resistance 52 53 54 54 55 54 evaluation Water reddening resistance (AL*) 0.4 0.4 0.3 0.3 0.2 0.2 ri QRnn / ιζηζ / E / γίΛΐ TABLE 3 (continued-1) Example 7 0.20 9 10 11 Paint Composition No. 7 0.20 9 10 11 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al1) Hydroxy-containing acrylic resin (Al-1-1) 42.7 46.7 46.7 40.0 27.1 Crosslinking Agent (A2) Amino resin U-VAN 20SE60 4 35 4 4 First Dispersion of Rheology Control Agent Name BM-2 BM-2 BM-2 BM-2 BM-2 Quantity 3 3 3 6 3 Second Dispersion of Rheology Control Agent Name CM-6 CM-6 CM-6 CM-6 CM-6 Quantity 16 16 16 16 32 Surface Adjustment Agent BYK-300 0.2 0.2 0.2 0.2 0.2 NACURE 5523 Catalyst 0.1 0.1 0.1 0.1 Curing Agent Binder Component (A) Crosslinking Agent (A2) Polyisocyanate Compound 0 Sumidur N3300 35 35 35 35 Content of components (A), (B), and (C) (parts Binder Component (A) Hydroxy-containing resin (Al) 61 65 65 61 61 Crosslinking Agent (A2) 39 35 35 39 39 First Rheology Control Agent (B) 0.3 0.3 0.3 0.6 0.3 (in mass) Second rheology control agent (C) 0.4 0.4 0.4 0.4 0.8 Results Finished appearance (LW) 4.5 4.7 4.6 5.0 4.8 of Buckling resistance 56 56 55 57 58 evaluation Water reddening resistance (AL*) 0.2 0.2 0.2 0.4 0.3 ri QRnn / ιζηζ / E / γίΛΐ TABLE 3 (continued-2) Example 12 13 14 15 16 Paint Composition No. 12 13 14 15 16 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al1) Hydroxy-containing acrylic resin (Al-1-1) 24.4 50.7 50.7 50.7 39.7 Crosslinking Agent (A2) Amino resin U-VAN 20SE60 4 4 4 4 4 First Dispersion of Rheology Control Agent Name BM-2 BM-2 BM-2 BM-2 BM-3 Quantity 6 3 3 3 6 Second Dispersion of Rheology Control Agent Name CM-6 CM-7 CM-8 CM-9 CM-6 Quantity 32 0.20 0.20 0.20 16 Surface Adjustment Agent BYK-300 0.2 0.2 0.2 0.2 0.2 NACURE 5523 Catalyst 0.1 0.1 0.1 0.1 0.1 Curing Agent Binder Component (A) Crosslinking Agent (A2) Polyisocyanate Compound 0 Sumidur N3300 35 35 35 35 35 Content of components (A), (B), and (C) (parts Binder Component (A) Hydroxy-containing resin (Al) 61 61 61 61 61 Crosslinking Agent (A2) 39 39 39 39 39 First rheology control agent (B) 0.6 0.3 0.3 0.3 0.3. (in mass) Second rheology control agent (C) 0.8 0.4 0.4 0.4 0.4 Results Finished appearance (LW) 5.1 4.7 5.0 5.2 4.6 of Buckling resistance 59 56 56 54 55 evaluation Water reddening resistance (AL*) 0.5 0.2 0.3 0.3 0.2 RI QRnn / I7P7 / E / YILI TABLE 3 (continued-3) Example 17 18 19 20 21 Paint Composition No. 17 18 19 20 21 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al1) Hydroxy-containing acrylic resin (Al-1-1) 42.7 42.7 42.7 42.7 42.7 Crosslinking Agent (A2) Amino resin U-VAN 20SE60 4 4 4 4 4 First Dispersion of Rheology Control Agent Name BM-4 BM-5 BM-6 BM-7 BM-8 Quantity 3 3 3 3 3 Second Dispersion of Rheology Control Agent Name CM-6 CM-6 CM-6 CM-6 CM-6 Quantity 16 16 16 16 16 Surface Adjustment Agent BYK-300 0.2 0.2 0.2 0.2 0.2 NACURE 5523 Catalyst 0.1 0.1 0.1 0.1 0.1 Curing Agent Binder Component (A) Crosslinking Agent (A2) Polyisocyanate Compound 0 Sumidur N3300 35 35 35 35 35 Content of components (A), (B), and (C) (parts by mass) Binder Component (A) Hydroxy-containing resin (Al) 61 61 61 61 61 Crosslinking Agent (A2) 39 39 39 39 39 First rheology control agent (B) 0.3 0.3 0.3 0.3 0.3 Second rheology control agent (C) 0.4 0.4 0.4 0.4 0.4. Results Finished Appearance (LW) 5.1 5.3 5.2 5.4 5.7 Buckling Resistance 53 54 54 53 52 Water Reddening Resistance (AL*) 0.3 0.4 0.4 0.5 0.6 ri QRnn / ιζηζ / E / γίΛΐ TABLE 3 (continued-^ Example 22 23 24 25 Paint Composition No. 22 23 24 25 Main Agent Binder Component (A) Hydroxy-Containing Resin (Al) Hydroxy-Containing Acrylic Resin (Al-1) Hydroxy-Containing Acrylic Resin (Ali-i) 42.7 42.7 42.7 42.7 Crosslinking Agent (A2) Amino Resin U-VAN 20SE60 4 4 4 4 First Dispersion of Rheology Control Agent Name BM-2 BM-2 BM-2 BM-2 Quantity 3 3 3 3 Second Dispersion of Rheology Control Agent Name CM-6 CM-6 CM-6 CM-6 Quantity 16 16 16 16 Surface Adjustment Agent BYK-300 0.2 0.2 0.2 0.2 Ultraviolet Absorber TINUVIN 400 (*5) 3 3 3 3 Light stabilizer HOSTAVIN 3058 (*6) 1 1 1 1 Catalyst NACURE 5523 0.1 NACURE 4167 (*7) 0.1 NEOSTANN U-600 (*8) 0.1 Curing agent Binder component (A) Crosslinking agent (A2) Polyisocyanate compound Sumidur N3300 35 35 35 35 Content of components (A), (B), and (C) (parts by mass) Binder component (A) Hydroxy-containing resin (Al) 61 61 61 61 Crosslinking agent (A2) 39 39 39 39 First rheology control agent (B) 0.3 0.3 0.3 0.3 Second rheology control agent (C) 0.4 0.4 0.4 0.4 Evaluation results Finished appearance (LW) 4.6 4.7 4.6 4.8 Buckling resistance 55 55 56 54 Water reddening resistance (AL*) 0.2 0.2 0.2 0.2 ri QRnn / ιζηζ / E / γίΛΐ TABLE 3 (continued-5) Comparative Example 1 2 3 4 Paint Composition No. 26 27 28 29 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al-1) Hydroxy-containing acrylic resin (Al-1-1) 58.3 47.5 34 61 Crosslinking Agent (A2) Amino resin U-VAN 20SE60 4 4 4 4 First Dispersion of Rheology Control Agent Name BM-2 BM-2 BM-2 Quantity 3 15 30 Second Dispersion of Rheology Control Agent Name Quantity Surface Adjusting Agent BYK-300 0.2 0.2 0.2 0.2 Catalyst NACURE 5523 0.1 0.1 0.1 0.1 Curing Agent Binder Component (A) Crosslinking Agent (A2) Compound of polyisocyanate 0 Sumidur N3300 35 35 35 35 Content Component Resin containing hydroxy (Al) 61 61 61 61 of components (A), (B), and (C) (parts by mass) and binder (A) Crosslinking agent (A2) 39 39 39 39 First rheology control agent (B) 0.3 1.5 3.0 Second rheology control agent (C) Evaluation results Finished appearance (LW) 11.5 (Buckling) 10.9 (Buckling) 10.1 7.8 (Buckling) Buckling resistance 40 44 49 35 Water reddening resistance (AL*) 0.2 1.4 2.2 0.0 ri QRnn / ιζηζ / E / γίΛΐ The asterisks (*) in Table 2 mean the following. * 5: TINUVIN 400: Trade name, benzotriazole ultraviolet ray absorber, active ingredient: 100%, produced by BASF * 6: HOSTAVIN 3058: Trade name, hindered amine light stabilizer, acylated hindered amine, active ingredient: 100%, produced by Clariant * 7: NACURE 4167: Trade name, alkylphosphoric acid triethylamine salt, curing catalyst for melamine resin, active ingredient: 25%, produced by King Industries, Inc. *8: NEOSTANN U-600: trade name, inorganic bismuth, active ingredient: 100%, produced by Nitto Kasei Co., Ltd. Paint Composition Production: Part 2 EXAMPLE 26 34.5 parts (solids content: 20.7 parts) of the hydroxy(Al-1-1)-containing acrylic resin solution obtained from production example 1, 33.8 parts (solids content: 22 parts) of the hydroxy(Al-1-2)-containing acrylic resin solution obtained from production example 2, 6.7 parts (solids content: 4 parts) of U-VAN 20SE60 (trade name, produced by Mitsui Chemicals, Inc., a melamine resin, solids content: 60%), 6 parts (solids content: 3 parts, wherein the rheology control agent component (B) constitutes 0.3 parts, and the hydroxy(Al-1-1)-containing acrylic resin constitutes 2.7 parts) of the rheology control agent (BM-2) dispersion solution obtained from example 5, 32 parts (solids content: 16 parts, in where the rheology control agent component (C) constitutes 0.4 parts, and the acrylic resin containing hydroxy (Al-1-1) constitutes 15.6 parts) of the rheology control agent (CM-6) dispersion solution obtained in Example 17, 0.4 parts (solids content: 0.2 parts) of BYK-300 (trade name, produced by BYK-Chemie, a surface adjusting agent, active ingredient: 52%) and 0.3 parts (solids content: 0.1 parts) of NACURE 5523 (trade name, dodecylbenzenesulfonic acid amine salt, catalyst, active ingredient: 35%, produced by King Industries, Inc.) were uniformly mixed to obtain a main agent. The main agent and 35 parts of Sumidur N3300 (trade name, produced by Sumika Covestro Urethane Co., Ltd., a hexamethylene diisocyanurate isocyanurate, solids content: 100%), which is a curing agent (crosslinking agent (A2)), were mixed uniformly immediately before application; and butyl acetate was further added to adjust the viscosity to 30 seconds, measured with a Ford Cup No.4 to 20°C, thus obtaining paint composition No. 30. EXAMPLES 27 to 28 v COMPARATIVE EXAMPLE 5 Paint compositions No. 31 to 33 with a viscosity of 30 seconds measured with a No. 4 Ford Cup at 20°C were obtained in the same manner as in Example 26, except that the formulations shown in Table 3 below were used. The quantities of the components shown in Table 4 are expressed as solids content by mass. Test panel preparation: Part 2 Test panel preparation for examples 26 to 28 and comparative example 5 Preparation of the test panel for the evaluation of the finish appearance, resistance to water reddening and scratch resistance The test panels for paint compositions No. 30 to 33 were prepared in the same manner as in the preparation of the test panel for the evaluation of the final appearance and resistance to water reddening described in the section Preparation of the test panel: Part 1, except that each of the paint compositions No. 30 to 33 was used. Preparation of the test panel for the evaluation of buckling resistance The test panels of paint compositions No. 30 to 33 were prepared in the same way as in the preparation of the test panel for the evaluation of buckling resistance in the section Preparation of the test panel: Part 1, except that each of the paint compositions No. 30 to 33 was used. The previously obtained test panels were evaluated using the test methods described below. Table 4 shows the evaluation results along with the formulations of the paint compositions. RI QRnn / I7P7 / E / YILI Test Method 2 The final appearance, resistance to water reddening, and resistance to buckling 5 were evaluated in the same manner as described above in Test Method 1. Scratch Resistance: Each test panel was affixed to the roof of a car using waterproof adhesive tape (produced by Nichiban Co., Ltd.), and the car, with the test panel on the roof, was washed 15 times in a car wash tunnel at 20°C. The 20° specular reflectance (20° gloss) of the test panel was then measured, and the gloss retention (%) was calculated relative to the 20° gloss value before the test to assess scratch resistance. The higher the gloss retention, the better the scratch resistance. In this specification, an evaluation result of A, B, or C signifies excellent scratch resistance. The car wash tunnel used was a PO20 FWRC (produced by Yasui Sangyo KK). A: 80% or more gloss retention B: Gloss retention of 75% or more and less than 80% C: Gloss retention of 70% or more and less than 75% D: Gloss retention of 50% or more and less than 70% E: Gloss retention less than 50% TABLE 4 Example Comparative Example 0 26 27 28 5 Paint Composition No. 30 31 32 33 Main Agent Binder Component (A) Hydroxy-containing resin (Al) Hydroxy-containing acrylic resin (Al-1) Hydroxy-containing acrylic resin (Al-1-1) 20.7 10.7 20.7 36.3 Secondary Hydroxy-containing acrylic resin 22 32 22 Alkoxysilyl (Al-1-2) Primary acrylic resin containing hydroxy and alkoxysilyl (Al-1-3) 22 Crosslinking agent (A2) Amino resin U-VAN 20SE60 4 4 4 4 First dispersion of rheology control agent Name BM-2 BM-2 BM-2 BM-2 Quantity 3 3 3 3 Second dispersion of rheology control agent Name CM-6 CM-6 CM-6 Quantity 16 16 16 Surface adjustment agent BYK-300 0.2 0.2 0.2 0.2 Catalyst NACURE 5523 0.1 0.1 0.1 0.1 Curing agent Binder component (A) Crosslinking agent (A2) Polyisocyanate compound 0 Sumidur N3300 35 35 35 35 Content of components (A), (B), and (C) (parts by mass) Component and binder (A) Acrylic resin containing hydroxy (Al-1-1) 39 29 39 39 Secondary acrylic resin containing hydroxy and alkoxysilyl (Al-1-2) 22 32 22 22 Crosslinking agent (A2) 39 39 39 39 First rheology control agent (B) 0.3 0.3 0.3 0.3 Second rheology control agent (C) 0.4 0.4 0.4 Evaluation results Finished appearance (LW) 4.8 5.2 5.0 11.3 (Buckling) Buckling resistance 54 55 53 40 Water reddening resistance (AL*) 0.2 0.2 0.2 0.2. ri QRnn / ιζηζ / E / γίΛΐ Scratch resistance. BABB The embodiments and examples of the present invention are described in detail above. However, the present invention is not limited to these embodiments, and various modifications can be made based on the technical idea of ​​the present invention. For example, the structures, methods, steps, forms, materials, and values ​​indicated in the modalities and examples above are simply examples, and different structures, methods, steps, forms, materials, values, and the like may also be used as needed. Furthermore, the structures, methods, stages, forms, materials, values ​​and the like indicated in the modalities can be combined interchangeably without departing from the spirit and main concepts of the present invention. Furthermore, the present invention may also utilize the following structures. [1] A paint composition comprising (A) a binder component, (B) a first rheology control agent, and (C) a second rheology control agent, wherein the first rheology control agent (B) contains a reaction product of (b1) a polyisocyanate compound, (b2) a primary monoamine having a number-average molecular weight of 300 or less, and (b3) a polyetheramine having a number-average molecular weight of more than 300 and less than 6000, the proportion of polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) is 0.5% by mass or more and less than 10% by mass based on the total amount of components (b1) to (b3), the second rheology control agent (C) contains a reaction product of (e1) a polyisocyanate compound, (c2) a primary monoamine having a number-average molecular weight of 300 or less, and (c3) a polyetheramine having two or more amino groups and having a number-average molecular weight of 1000 or more and less than 6000, and the proportion of polyetheramine having two or more amino groups and having a number-average molecular weight of 1000 or more and less than 6000 (c3) is within a range of 10 to 30% by mass based on the total amount of components (e1) to (c3). [2] The paint composition according to [1], wherein the polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) has three or more amino groups. [3] The paint composition according to [1] or [2], wherein the proportion of the polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) is more than 15% by mass and 30% by mass or less based on the total amount of components (el) to (c3). [4] The paint composition according to any of [1] to [3], wherein the proportion of the polyisocyanate compound (i) is from 30% by mass to 60% by mass based on the total amount RI QRnn / Ι7Π7 / Ε / ΥΙΛΙ of the components (el) to (c3). [5] The paint composition according to any of [1] to [4], wherein the proportion of the primary monoamine having a number average molecular weight of 300 or less (c2) is from 30% by mass to 60% by mass based on the total amount of components (el) to (c3). [6] The paint composition according to any of [1] to [5], wherein the proportion of the polyisocyanate compound (bl) is from 30% by mass to 60% by mass based on the total amount of component (bl) to (b3). [7] The paint composition according to any of [1] to [6], wherein the proportion of the primary monoamine having a number average molecular weight of 300 or less (b2) is from 35% by mass to 65% by mass based on the total amount of component (bl) to (b3). [8] The paint composition according to any of [1] to [7], wherein the binder component (A) contains a resin containing hydroxyl (Al) and a crosslinking agent (A2). [9] The paint composition according to [8], wherein the hydroxy(Al)-containing resin is an acrylic resin containing hydroxy(Al-1).

[10] The paint composition according to [8] or [9], wherein the hydroxy (Al) containing resin contains a secondary hydroxy (Al-la) containing acrylic resin.

[11] The paint composition according to any of [8] to

[10] , wherein the hydroxy-containing resin (Al) contains an acrylic resin containing hydroxy and alkoxysilyl (Al-lb).

[12] The paint composition according to any of [8] to

[11] , wherein the hydroxy-containing resin (Al) contains a secondary acrylic resin containing hydroxy and alkoxysilyl (Bl-lc).

[13] The paint composition according to any of [8] to

[12] , wherein the crosslinking agent (A2) contains one, two or more polyisocyanate compounds, and the polyisocyanate compound content is from 5 to 60 parts by mass, per 100 parts by mass of the solids content of the binder component.

[14] The paint composition according to any of [8] to

[12] , wherein the crosslinking agent (A2) contains a blocked polyisocyanate compound, and the content of the blocked polyisocyanate compound is 5 to 60 parts by mass, per 100 parts by mass of the total solids content of the binder component.

[15] The paint composition according to any of [8] to

[12] , wherein the crosslinking agent (A2) contains an amino resin, and the amino resin content is from 0.5 to 40 parts by mass, per 100 parts by mass of the total solids content of the binder component.

[16] The paint composition according to any of [1] to

[15] , wherein the content of the first rheology control agent (B) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binder component (A), and the content of the second rheology control agent (C) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binder component (A).

Claims

1. A paint composition comprising (A) a binder component, (B) a first rheology control agent, and (C) a second rheology control agent, wherein the first rheology control agent (B) contains a reaction product of (b1) a polyisocyanate compound, (b2) a primary monoamine having a number-average molecular weight of 300 or less, and (b3) a polyetheramine having a number-average molecular weight of more than 300 and less than 6000, the proportion of polyetheramine having a number-average molecular weight of more than 300 and less than 6000 (b3) is 0.5% by mass or more and less than 10% by mass based on the total amount of components (b1) to (b3), the second rheology control agent (C) contains a reaction product of (e1) a polyisocyanate compound, (c2) a primary monoamine having a number average molecular weight of 300 or less, and (c3) a polyetheramine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000, and the proportion of polyetheramine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) is within a range of 10 to 30% by mass based on the total amount of components (e1) to (c3).

2. The paint composition according to claim 1, further characterized in that the polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) has three or more amino groups.

3. The paint composition according to claim 1 or 2, further characterized in that the proportion of the polyether amine having two or more amino groups and having a number average molecular weight of 1000 or more and less than 6000 (c3) is more than 15% by mass and 30% by mass or less based on the total amount of components (el) to (c3).

4. The paint composition according to any of claims 1 to 3, further characterized in that the binder component (A) contains a resin containing hydroxyl (Al) and a crosslinking agent (A2).

5. The paint composition according to any of claims 1 to 4, further characterized in that the content of the first rheology control agent (B) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binder component (A), and the content of the second rheology control agent (C) is within a range of 0.1 to 2 parts by mass, per 100 parts by mass of the solids content of the binder component (A).