Patent ID: 6063860
Filing Date: 2000-05-16
Classification: C08G

Abstract:
A water dispersible blocked polyisocyanate of formula (I)R--Y.sub.m (I)where R is an m valent group comprising an aliphatic, cycloaliphatic, heterocyclic or aromatic group and comprising (i) at least three consecutive ethylene oxide groups or (ii) at least one residue of a polyhydroxy carboxylic acid,and the groups Y are the same or different and each Y is a group of formula (II) ##STR9## where each R.sup.1 is selected from the group consisting of alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO.sub.2, halogen and groups --C(O)--O--R.sup.2where R.sup.2 is hydrogen or alkyl;n is 0, 1, 2 or 3; and when n is more than 1 said groups R.sup.1 are the same or different; andm is an integer of 2 or more.