Patent ID: 6426390
Filing Date: 2002-07-30
Classification: C08F,C08L

Abstract:
A composition comprising a hydrogenated block copolymer of alternating blocks, wherein the hydrogenated block copolymer comprises a hard segment phase volume of at least two distinct blocks of hydrogenated polymerized vinyl aromatic monomer, herein referred to as hydrogenated vinyl aromatic polymer block, and a soft segment phase volume of at least one block of hydrogenated polymerized conjugated diene monomer, herein referred to as hydrogenated conjugated diene polymer block, wherein the hydrogenated block copolymer is further characterized by:a) a sufficient soft segment phase volume such that a lamellar morphology is achieved, b) a total number average molecular weight (Mnt) of from 35,000 to 65,000; and c) a hydrogenation level such that each hydrogenated vinyl aromatic polymer block has a hydrogenation level of greater than 90 percent and each hydrogenated conjugated diene polymer block has a hydrogenation level of greater than 95 percent.