A binder according to claim 11 wherein R1 and R2 are hydrogen, R3 is hydrogen or methyl, and R4 is a member selected from the group consisting of phenyl, substituted phenyl, and the radical ##STR14## wherein R18 is a member selected from the group consisting of straight chain alkyl groups, branched chain alkyl groups and alkyl phenoxypoly(ethyleneoxy) ethanol, R18 containing no more than 21 carbon