Flexible thermosetting acrylic enamels

Claim 2

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 20-80% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 0-97% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 3-15% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 0-90% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-18 carbon atoms in the alkyl group or a mixture of alkyl methacrylates having 1-18 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; provided that when the alkyl acrylate of (1) is not present, there is present at least 20% by weight, based on the weight of the polymer, of such alkyl methacrylate having 6-18 carbon atoms in the alkyl group; and (4) 0-10% by weight, based on the weight of the polymer, of at least one alpha, beta-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid; wherein components (1) through (4) total 100%, said acrylic polymer has an inherent viscosity, at 25° C, of 0.05-0.35, as determined as a 0.5% solution in 1,2-dichloroethane, and a glass transition temperature not exceeding 60° C; (b) 10-50% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from a linear or branched chain diol, including ether glycols, or mixtures thereof or mixtures of diols and triols, containing up to and including 8 carbon atoms and a dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids containing up to and including 12 carbon atoms, wherein at least 75% by weight, based on the weight of dicarboxylic acid, is an aliphatic dicarboxylic acid; wherein said polyester has a molecular weight not exceeding 2,000, a hydroxyl number range of 50-150, a maximum acid number of 10, and a glass transition temperature below 25° C; and (C) 10-40% by weight, based on the weight of (A) plus (B) plus (C), of an alkylated amine-aldehyde resin, an alkylated amide-aldehyde resin or mixtures thereof.

Claim 3

The thermosetting acrylic enamel of claim 1 wherein said acrylic polymer comprises 20-80% of said film-forming constituents and consists essentially of: (1) 20-40% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 6-12% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 10-45% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group; (4) 1-5% by weight, based on the weight of the polymer, of at least one α,β-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid; and (5) 20-60% by weight, based on the weight of the polymer, of an alkyl methacrylate having 12-16 carbon atoms in the alkyl group.

Claim 4

The thermosetting acrylic enamel of claim 1 wherein said acrylic polymer comprises 20-80% of said film-forming constituents and consists essentially of: (1) 20-60% by weight, based on the weight of the polymer, of an alkyl methacrylate having 12-16 carbon atoms in the alkyl group; (2) 6-12% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 20-65% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group; (4) 1-5% by weight, based on the weight of the polymer, of at least one α,β-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid.

Claim 5

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 20-80% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 10-97% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 3-15% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 0-40% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group or a mixture of alkyl methacrylates having 1-4 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; and (4) 0-10% by weight, based on the weight of the polymer, of at least one α,β-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid; wherein components (1) through (4) total 100%, said acrylic polymer has an inherent viscosity, at 25° C, of 0.05- 0.35, as determined as a 0.5% solution in 1,2-dichloroethane, and a glass transition temperature not exceeding 60° C; (b) 10-50% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from a linear or branched chain diol, including ether glycols, or mixtures thereof or mixtures of diols and triols, containing up to and including 8 carbon atoms and a dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids containing up to and including 12 carbon atoms, wherein at least 75% by weight, based on the weight of dicarboxylic acid, is an aliphatic dicarboxylic acid; wherein said polyester has a molecular weight not exceeding 2,000, a hydroxyl number range of 50-150, a maximum acid number of 10, and a glass transition temperature below 25° C; and (C) 10-40% by weight, based on the weight of (A) plus (B) plus (C), of an alkylated amine-aldehyde resin, an alkylated amide-aldehyde resin or mixtures thereof.

Claim 6

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 20-80% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 10-97% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 3-15% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 0-40% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group or a mixture of alkyl methacrylates having 1-4 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; and (4) 0-10% by weight, based on the weight of the polymer, of at least one α,β-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid; wherein components (1) through (4) total 100%, said acrylic polymer has an inherent viscosity, at 25° C, of 0.05- 0.35, as determined as a 0.5% solution in 1,2-dichloroethane, and a glass transition temperature not exceeding 60° C; (b) 10-50% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from a linear or branched chain diol, including ether glycols, or mixtures thereof or mixtures of diols and triols, containing up to and including 8 carbon atoms and a dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids containing up to and including 12 carbon atoms, wherein at least 75% by weight, based on the weight of dicarboxylic acid, is an aliphatic dicarboxylic acid; wherein said polyester has a molecular weight not exceeding 2,000, a hydroxyl number range of 50-150, a maximum acid number of 10, and a glass transition temperature below 25° C; and (C) 10-40% by weight, based on the weight of (A) plus (B) plus (C), of an alkylated amine-aldehyde resin, an alkylated amide-aldehyde resin or mixtures thereof.

Claim 7

The thermosetting acrylic enamel of claim 4 wherein said acrylic polymer comprises 20-80% of said film-forming constituents and consists essentially of: (1) 50-75% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 6-12% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 10-30% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group or a mixture of alkyl methacrylate having 1-4 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; and (4) 1-5% by weight, based on the weight of the polymer, of at least one α,β-ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, and crotonic acid.

Claim 8

The thermosetting acrylic enamel of claim 4 wherein said acrylic polymer comprises 30-60% of said film-forming constituents and consists essentially of: (1) 50-75% by weight, based on the weight of the acrylic polymer, of butyl acrylate; (2) 6-12% by weight, based on the weight of the acrylic polymer, of hydroxyethyl acrylate; (3) 10-30% by weight, based on the weight of the acrylic polymer, of methyl methacrylate and styrene, wherein the weight of styrene does not exceed 75% by weight of said mixture; and (4) 1-5% by weight, based on the weight of the acrylic polymer, of acrylic acid, methacrylic acid or mixtures thereof.

Claim 9

The thermosetting acrylic enamel of claim 1 wherein said polyester comprises 20-40% by weight of said film-forming constituents and is prepared from at least one diol selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 2-ethyl-1,3-hexanediol, neopentyl glycol, 2-methyl-2-ethyl-1,3-propanediol, 1,6-hexanediol, diethylene glycol, and triethylene glycol or a mixture of a diol with a triol selected from the group consisting of trimethylolpropane, trimethylolethane, glycerol, and 1,2,6-hexanetriol and an aliphatic dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids, wherein at least 75% by weight, based on the weight of said mixture, is an aliphatic dicarboxylic acid, wherein the dicarboxylic acid is selected from the group consisting of succinic acid, glutaric acid, adipic acid, azelaic acid, dodecanedioic acid, and the isomeric phthalic acids.

Claim 10

The thermosetting acrylic enamel of claim 1 wherein 15-35% by weight of said film-forming constituents is an alkylated melamine-formaldehyde resin.

Claim 11

The thermosetting acrylic enamel of claim 4 wherein said acrylic polymer consists essentially of: (1) 84-97% by weight, based on the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; and (2) 3-15% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof.

Claim 12

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30-60% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 50-75% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 6-12% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 10-30% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group or a mixture of alkyl methacrylate having 1-4 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; and (4) 1-5% by weight, based on the weight of the acrylic polymer, of acrylic acid, methacrylic acid or mixtures thereof. wherein components (1) through (4) total 100%, said acrylic polymer has an inherent viscosity, at 25° C, of 0.05-0.35, as determined as a 0.5% solution in 1,2-dichloroethane, and a glass transition temperature not exceeding 60° C; (b) 20-40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from at least one diol selected from the group consisting of ethylene glycol, 1,2,-propylene glycol, 1,3-propylene glycol, 1,2,-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 2-ethyl-1,3-neopentyl glycol, 2-methyl-2-ethyl-1,3-propanediol, 1,6-hexanediol, diethylene glycol, and triethylene glycol or a mixture of a diol with a triol selected from the group consisting of trimethylolpropane, trimethylolethane, glycerol, and 1,2,6-hexanetriol and an aliphatic dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids, wherein at least 75% by weight, based on the weight of said mixture, is an aliphatic dicarboxylic acid, wherein the dicarboxylic acid is selected from the group consisting of succinic acid, glutaric acid, adipic acid, azelaic acid, and the isomeric phthalic acids; wherein said polyester has a molecular weight not exceeding 2,000, a hydroxyl number range of 50-150, a maximum acid number of 10, and a glass transition temperature below 25° C; and (C) 15-35% by weight, based on the weight of (A) plus (B) plus (C), of an alkylated melamine formaldehyde resin crosslinking agent.

Claim 13

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30-60% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 50-75% by weight, based on the weight of the polymer, of an alkyl acrylate having 2-8 carbon atoms in the alkyl group; (2) 6-12% by weight, based on the weight of the polymer, of a hydroxyalkyl acrylate or methacrylate having 2-4 carbon atoms in the alkyl group or mixtures thereof; (3) 10-30% by weight, based on the weight of the polymer, of an alkyl methacrylate having 1-4 carbon atoms in the alkyl group or a mixture of alkyl methacrylate having 1-4 carbon atoms in the alkyl group and styrene, wherein styrene does not exceed 75% by weight of said mixture; and (4) 1-5% by weight, based on the weight of the acrylic polymer, of acrylic acid, methacrylic acid or mixtures thereof. wherein components (1) through (4) total 100%, said acrylic polymer has an inherent viscosity, at 25° C, of 0.05-0.35, as determined as a 0.5% solution in 1,2-dichloroethane, and a glass transition temperature not exceeding 60° C; (b) 20-40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from at least one diol selected from the group consisting of ethylene glycol, 1,2,-propylene glycol, 1,3-propylene glycol, 1,2,-butylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, 2-ethyl-1,3-neopentyl glycol, 2-methyl-2-ethyl-1,3-propanediol, 1,6-hexanediol, diethylene glycol, and triethylene glycol or a mixture of a diol with a triol selected from the group consisting of trimethylolpropane, trimethylolethane, glycerol, and 1,2,6-hexanetriol and an aliphatic dicarboxylic acid, an anhydride thereof or mixtures of dicarboxylic acids, wherein at least 75% by weight, based on the weight of said mixture, is an aliphatic dicarboxylic acid, wherein the dicarboxylic acid is selected from the group consisting of succinic acid, glutaric acid, adipic acid, azelaic acid, and the isomeric phthalic acids; wherein said polyester has a molecular weight not exceeding 2,000, a hydroxyl number range of 50-150, a maximum acid number of 10, and a glass transition temperature below 25° C; and (C) 15-35% by weight, based on the weight of (A) plus (B) plus (C), of an alkylated melamine formaldehyde resin crosslinking agent.

Claim 14

The thermosetting acrylic enamel of claim 10 wherein said acrylic polymer consists essentially of: (1) 50-75% by weight, based on the weight of the acrylic polymer, of butyl acrylate; (2) 6-12% by weight, based on the weight of the acrylic polymer, of hydroxyethyl acrylate; (3) 10-30% by weight, based on the weight of the acrylic polymer, of methyl methacrylate or a mixture of methyl methacrylate and styrene, wherein the weight of styrene does not exceed 75% by weight of said mixture; and (4) 1-5% by weight, based on the weight of the acrylic polymer, of acrylic acid, methacrylic acid or mixtures thereof.

Claim 15

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 20% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and 10% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 38% by weight, based on the weight of the polymer, of butyl acrylate; (2) 8% weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 50% by weight, based on the weight of the polymer, of styrene; and (4) 4% by weight, based on the weight of the polymer, of acrylic acid; said acrylic polymer has an inherent viscosity, at 25° C, of 0.1-0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 16

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 20% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and 10% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 38% by weight, based on the weight of the polymer, of butyl acrylate; (2) 8% weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 50% by weight, based on the weight of the polymer, of styrene; and (4) 4% by weight, based on the weight of the polymer, of acrylic acid; said acrylic polymer has an inherent viscosity, at 25° C, of 0.1-0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 17

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 18

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 19

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 40% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and 10% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 38% by weight, based on the weight of the polymer, of butyl acrylate; (2) 8% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 50% by weight, based on the weight of the polymer, of sytrene; and (4) 4% by weight, based on the weight of the polymer, of acrylic acid; said acrylic polymer has an inherent viscosity, at 25° C, of 0.1-0.3 as determined ad a 0.5% solution in 1,2-dichloroethane; (B) 30% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol, 1,6-hexanediol, and adipic acid; wherein said polyester has a molecular weight between 700-1300, a hydroxyl number range of 70-110, and a maximum acid number of 5; and (C) 20% by weight, based on the weight of (A) plus (B) plus (C), of a partially methylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 20

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 40% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 61% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 26% by weight, based on the weight of the polymer, of methyl methacrylate; and (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and 10% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 38% by weight, based on the weight of the polymer, of butyl acrylate; (2) 8% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 50% by weight, based on the weight of the polymer, of sytrene; and (4) 4% by weight, based on the weight of the polymer, of acrylic acid; said acrylic polymer has an inherent viscosity, at 25° C, of 0.1-0.3 as determined ad a 0.5% solution in 1,2-dichloroethane; (B) 30% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol, 1,6-hexanediol, and adipic acid; wherein said polyester has a molecular weight between 700-1300, a hydroxyl number range of 70-110, and a maximum acid number of 5; and (C) 20% by weight, based on the weight of (A) plus (B) plus (C), of a partially methylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 21

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 30% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 28% by weight, based on the weight of the polymer, of methyl methacrylate; (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and (5) 29% by weight, based on the weight of the polymer, of lauryl methacrylate; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 22

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 30% by weight, based on the weight of the polymer, of butyl acrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 28% by weight, based on the weight of the polymer, of methyl methacrylate; (4) 3% by weight, based on the weight of the polymer, of acrylic acid; and (5) 29% by weight, based on the weight of the polymer, of lauryl methacrylate; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichloroethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 23

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 59% by weight, based on the weight of the polymer, of lauryl methacrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 28% by weight, based on the weight of the polymer, of methyl methacrylate; (4) 3% by weight, based on the weight of the polymer, of acrylic acid; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichlorethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 24

A thermosetting acrylic enamel wherein the film-forming constituents consist essentially of: (A) 30% by weight, based on the weight of (A) plus (B) plus (C), of an acrylic polymer consisting essentially of: (1) 59% by weight, based on the weight of the polymer, of lauryl methacrylate; (2) 10% by weight, based on the weight of the polymer, of 2-hydroxyethyl acrylate; (3) 28% by weight, based on the weight of the polymer, of methyl methacrylate; (4) 3% by weight, based on the weight of the polymer, of acrylic acid; wherein said acrylic polymer has an inherent viscosity, at 25° C, of 0.1 to 0.3 as determined as a 0.5% solution in 1,2-dichlorethane; (B) 40% by weight, based on the weight of (A) plus (B) plus (C), of a polyester prepared from neopentyl glycol and adipic acid; wherein said polyester has a molecular weight not exceeding 2,000, a maximum acid number of 5, and a hydroxyl number range of 70-110; and (C) 30% by weight, based on the weight of (A) plus (B) plus (C), of a butylated melamine formaldehyde crosslinking agent; wherein the enamel also contains pigment.

Claim 25

A flexible substrate coated with the thermosetting acrylic enamel of claim 12.

Claim 26

A flexible substrate coated with the thermosetting acrylic enamel of claim 13.

Claim 27

A flexible substrate coated with the thermosetting acrylic enamel of claim 14.

Claim 28

A flexible substrate coated with the thermosetting acrylic enamel of claim 15.

Claim 29

A flexible substrate coated with the thermosetting acrylic enamel of claim 16.

Claim 30

A metallic substrate coated with the thermosetting acrylic enamel of claim 12.

Claim 31

A metallic substrate coated with the thermosetting acrylic enamel of claim 13.

Claim 32

A metallic substrate coated with the thermosetting acrylic enamel of claim 14.

Claim 33

A metallic substrate coated with the thermosetting acrylic enamel of claim 15.

Claim 34

A metallic substrate coated with the thermosetting acrylic enamel of claim 16.