Hydroxyl-containing liquid polymers and pressure- sensitive adhesives prepared therefrom

Abstract From the Canadian patent

A liquid hydroxyl containing alkyl acrylate copolymer contains copolymerized therein at least about 65 weight percent of an alkyl acrylate wherein the alkyl group contains 3 to 10 carbon atoms and from about 1 weight percent to about 20 weight percent N-vinyl-2pyrrolidone and containing terminal and random hydroxyl groups; the copolymers have improved clarity and, pressure-sensitive adhesives made from such liquid polymers have both improved clarity and adhesion.