초록

A formaldehyde-free curable aqueous composition comprising:

대표청구항 ▼

[ What is claimed is:] [1.] A formaldehyde-free curable aqueous composition comprising:(a) a polycarboxylic acid comprising at least two carboxylic acid groups, anhydride groups, or salts of the polyacid thereof;(b) an active hydrogen containing compound containing at least two active hydrogen group

[ What is claimed is:] [1.] A formaldehyde-free curable aqueous composition comprising:(a) a polycarboxylic acid comprising at least two carboxylic acid groups, anhydride groups, or salts of the polyacid thereof;(b) an active hydrogen containing compound containing at least two active hydrogen groups selected from the group consisting of hydroxyl, primary amino, secondary amino, and mixtures thereof;(c) a fluoroborate accelerator; and(d) a phosphorus containing accelerator selected from the group consisting of hypophosphorus acid, sodium hypophosphite, sodium phosphite, potassium phosphite, disodium pyrophosphate, tetrasodium pyrophosphate, sodium tripolyphosphate, potassium tripolyphosphate, potassium phosphate, and mixtures thereof; wherein the ratio of the number of equivalents of said carboxylic acid groups, anhydride groups, or salts thereof to the number of equivalents of said active hydrogen groups is from 1/0.01 to about 1/3, and the said carboxylic acid groups, anhydride groups, or salts thereof are neutralized to an extent of less than 35 mole % with a fixed base.