Fast-setting latex coating and formulations
First Claim
1. A method of preparing a fast-setting coating on a substrate having a surface comprising the step of contacting the surface of the substrate with a stable aqueous dispersion containing a polymer having pendant strong cationic groups and pendant weak acid groups, wherein the surface of the substrate is, or is treated to be, sufficiently basic so that the stable aqueous dispersion sets in less time than the time required for a latex that contains a polymer having pendant strong cationic groups or pendant weak acid groups, but not both.
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Accused Products
Abstract
A method of preparing a fast-setting coating material on a substrate which comprises contacting a stable aqueous dispersion of a polymer that contains strong cationic groups and weak acid groups onto a substrate that is basic or treated to be basic.
48 Citations
18 Claims
- 1. A method of preparing a fast-setting coating on a substrate having a surface comprising the step of contacting the surface of the substrate with a stable aqueous dispersion containing a polymer having pendant strong cationic groups and pendant weak acid groups, wherein the surface of the substrate is, or is treated to be, sufficiently basic so that the stable aqueous dispersion sets in less time than the time required for a latex that contains a polymer having pendant strong cationic groups or pendant weak acid groups, but not both.
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18. A method of preparing a fast-setting coating on a substrate having a surface comprising the step of contacting the surface of the substrate with a stable aqueous dispersion of a polymer having pendant strong cationic groups, pendant weak acid groups, and structural units formed from the polymerization of a non-interfering polymerizable monomer, wherein
a) the ratio of the structural units formed from the non-interfering polymerizable monomer to the strong cationic groups and the weak acid groups is not less than 90: - 10 and not greater than 99.5;
0.5;b) the mole-to-mole ratio of the pendant strong cationic groups to weak anionic groups is from 4;
1 to 1;
4; andc) the surface of the substrate is, or is treated to be, sufficiently basic so that the stable aqueous dispersion is dry-to-the-touch in less than 5 minutes.
- 10 and not greater than 99.5;
Specification