TR2## wherein R1 is a hydrogen atom or a methyl group, R2 is a hydrogen atom or a C1 -C4 alkyl group, and...http://www.google.es/patents/US4423196?utm_source=gb-gplus-sharePatente US4423196 - Copolymers of propylene and allyl alcohol B???squeda avanzada de patentes N???mero de publicaci???nUS4423196 ATipo de publicaci???nConcesi???n N???mero de solicitudUS 06/321,277 Fecha de publicaci???n27 Dic 1