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US 2010/0062167 A1Published application
Reduced corrosion curable composition
AssigneeRohm and Haas Company
InventorJean Marie Brady
Life of this patent
Estimating the term…
Abstract
A curable composition, useful as a thermosetting binder, having an emulsion (co)polymer, a polyol, and a water soluble polyacid or salt thereof.
Claims10
An aqueous thermosetting composition comprising
- (a) polymer particles of at least one emulsion (co)polymer comprising greater than 10% by weight of one or more monomers comprising carboxylic acid groups, anhydride groups, or salts thereof;
- (b) at least one polyol, wherein the polyol has a formula molecular weight of less than 2000 and at least two hydroxyl groups, and wherein the ratio of the number of equivalents of hydroxyl groups of said polyol to the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof of said at least one emulsion (co)polymer is from 10/1 to 1/10;
- and
- (c) at least one water-soluble polyacid or salt thereof, in an amount no greater than 10%, by weight based on the sum of the weight of the emulsion (co)polymer (a) and the weight of the water-soluble polyacid or salt thereof, all weights being taken on a solids basis;
- wherein the aqueous thermosetting composition has a weight ratio of (a) to combined weights of (a), (b), and (c), of greater than 0.5:1.0, based on the weights of solids of each component;
- and
- wherein the pH of the aqueous thermosetting composition is no greater than 7.5.
4 more elements
A method for treating substrates comprising:
- (i) forming an aqueous thermosetting composition comprising admixing with water or one or more aqueous solvent (a) at least one emulsion (co)polymer comprising greater than 10% by weight of one or more monomers comprising carboxylic acid groups, anhydride groups, or salts thereof;
- (b) at least one polyol having a formula molecular weight of less than 2000 and at least two hydroxyl groups, and wherein the ratio of the number of equivalents of hydroxyl groups of the polyol(s) to the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof of the emulsion (co)polymer(s) is from 10/1 to 1/10;
- and
- (c) at least one water-soluble polyacid or salt thereof, in an amount no greater than 10%, by weight based on the sum of the weight of the emulsion (co)polymer (a) and the weight of the water-soluble polyacid or salt thereof, all weights being taken on a solids basis;
- wherein the aqueous thermosetting composition has a weight ratio of (a) to combined weights of (a), (b), and (c), of greater than 0.5:1.0, based on the weights of solids of each component;
- and
- wherein the pH of the aqueous thermosetting composition is no greater than 7.5;
- (ii) contacting said substrate with said aqueous thermosetting composition or, alternatively, applying said aqueous thermosetting composition to said substrate;
- and
- (iii) heating said aqueous thermosetting composition at a temperature of from 100° C. to 400° C.
7 more elements
Dependencies are inferred from the claim text.