Patent ID: 6410666
Filing Date: 2002-06-25
Classification: C08F,C08L

Abstract:
A method for preparing a triblock copolymer of the formula: comprising:(a) contacting a cycloalkene with a chain transfer agent of the formula: Zâ€”Y&boxH;Yâ€”Z â€ƒin the presence of a metal carbene metathesis catalyst to form a telechelic polymer; and (b) contacting the telechelic polymer with an alkene of the formula â€ƒin the presence of an ATRP organometallic catalyst wherein n and m are integers; Z is an ATRP initiator and â€”Y&boxH;Yâ€” is an alkenyl group; and, Râ€² is selected from the group consisting of aryl, nitrile and C1-C20 carboxylate, wherein Râ€² is substituted or unsubstituted.