Patent ID: 6069185
Filing Date: 2000-05-30
Classification: C07F,C08F

Abstract:
A radiation curable composition comprising:(A) an alkenyl ether-functional polyisobutylene polymer in which at least 50 mole percent of the non-terminal repeating units of the polymer are isobutylene units and containing at least one group having the formula ##STR13## wherein R is independently selected from the group consisting of monovalent hydrocarbon groups and alkoxy groups, R.sup.1 is a divalent hydrocarbon group having from 2 to 20 carbon atoms, R.sup.2 and R.sup.3 are independently selected from the group consisting of a hydrogen atom and a monovalent hydrocarbon group, and a has a value of 0 to 2;(B) a cationic photoinitiator; and(C) a free radical photoinitiator.