Patent ID: 8530929
Filing Date: 2013-09-10
Classification: C08F,H01L

Abstract:
1. A melt-processable polymer composition comprising a thermoplastic, substantially fully hydrogenated vinyl aromatic block copolymer, the substantially fully hydrogenated block copolymer having a) a glass transition temperature of at least 138° centigrade, b) a complex shear viscosity at an oscillatory frequency of 0.025 radians per second and a temperature of 260° centigrade of at least 2×10 5 pascal-seconds, c) a viscosity at a temperature of 260° centigrade and an apparent shear rate of 100 reciprocal seconds of no more than 1000 pascal-seconds, d) a polymerized vinyl aromatic content, prior to hydrogenation, within a range of from sixty percent by weight to eighty percent by weight, each weight percent being based upon total block copolymer weight prior to hydrogenation, and e) a weight average molecular weight, prior to hydrogenation, within a range of from 40,000 grams per mole to 150,000 grams per mole.