TERPOLYMERIZATIONS OF P-ACRYLOYLOXY-TRI-N-BUTYLTIN BENZOATE WITH ALKYL ACRYLATES OR VINYL-ACETATE AND N-VINYL-2-PYRROLIDONE

Ternary copolymerization reactions of p-acryloyloxy-tri-n-butyltin ben zoate (ABTB) with N-vinyl-2-pyrrolidone (NVP) and alkyl acrylates [eth yl (EA) and butyl acrylate (BA)] or vinyl acetate (VA) were carried ou t in solution at 65 degrees in the presence of a free radical initiato r. Experimental terpolymerization data agreed well with calculations b ased on the Alfrey-Goldfinger equation. The unitary, binary and ternar y azeotropes of various systems studied was easily determined by a com puter program. The results obtained showed that there is no ternary az eotropic compositions for any terpolymer system studied. Selective uni tary and binary azeotropic compositions were polymerized and the resul ts obtained showed good agreement between the theoretical and experime ntal terpolymer composition for each case.