a halogen, such as chlorine or bromine or fluorine, or a --CO--R1 group; each Y3 is independently hydrogen, a hydrocarbyl or hydrocarbyloxy group having from 1 to about 5 carbon atoms, or a halogen, such as chlorine or bromine or fluorine and X is ##STR18## or the acrylate (methacrylate) compounds represented by the following Formula XXXV ##STR19## wherein R4 is a hydrocarbyl group having from 2 t