Poly(vinyl chloride) was dehydrochlorinated in alkali solution and the
n grafted with 2-hydroxyethyl methacrylate (HEMA) using benzoyl peroxi
de as an initiator under a nitrogen atmosphere. The solubility of PVC-
g-HEMA has been successfully achieved through the addition of poly(HEM
A). The curing of the mixture of PVC-g-HEMA and poly(HEMA) effected th
rough a blocked diisocyanate was investigated. The investigation invol
ved the synthesis of three kinds of blocked diisocyanates and the effe
cts of the grafting percentage, curing time, curing temperature and ca
talyst. A desired flexible and golden color film can be obtained by co
ntrolling the quantity of the curing agent. (C) 1997 Elsevier Science
Ltd.