Patent ID: 7192451

Claim:
A method of treating finished garments comprising cellulosic material so as to cause cross-linking, which comprises the step of treating fabrics with an effective amount of a blocked cross-linking agent for cellulose, said cross-linking agent being thermally activated, wherein the blocked cross-linking agent comprises a polycarboxylic acid, which is blocked by esterification with an electron withdrawing alcohol or imide to form a polyester and wherein the blocking alcohol or imide comprises one or more of: a) trichlorophenol, b) isoeuginol, c) menthol, d) 4-cyanophenol, e) ethyl salicylate, f) 2,6-dimethoxy phenol, g) 4-aminophenol, h) dimethylamino phenol, and, i) N-hydroxysuccinimide.