| 摘要 |
The present invention relates to a composition comprising a hydrogenated pentablock copolymer having the structure ABABA, wherein block (A) is a hydrogenated vinyl aromatic polymer block having a hydrogenation level of greater than 90 percent and block (B) is a hydrogenated conjugated diene polymer block having a hydrogenation level of greater than 95 percent, characterized by: a) a total number average molecular weight (Mnt) of from 40,000 to 70,000, wherein each hydrogenated vinyl aromatic polymer block (A) has a Mna of from 8,700 to 21,000 and each hydrogenated conjugated diene polymer block (B) has a Mnb of from 2,000 to 12,500; the total amount of B being from 10 to 35 weight percent of the copolymer based on the combined weights of all A and B blocks; useful for thin wall injection molding applications. |
