Patent ID: 7267855
Filing Date: 2007-09-11
Classification: C08F,C08L,C09D,C09J,Y10T

Abstract:
1. An article selected from the group consisting of personal hygiene films and fibers, blown films for medical devices, extruded films, extruded tubes, extruded profiles, overmolded grips, airbags, steering wheels, toys, cap seals, automotive skins, thermal spray coatings, trays, and gloves, consisting essentially of at least one hydrogenated block copolymer and at least one other component selected from the group consisting of olefin polymers, styrene polymers, tackifying resins, polymer extending oils and engineering thermoplastic resins, wherein said hydrogenated block copolymer has at least one block A and at least one block B, and wherein: a. prior to hydrogenation each A block is a mono alkenyl arene homopolymer block and each B block is a controlled distribution copolymer block of at least one conjugated diene and at least one mono alkenyl arene; b. subsequent to hydrogenation about 0-10% of the arene double bonds have been reduced, and at least about 90% of the conjugated diene double bonds have been reduced; c. each A block having a number average molecular weight between about 3,000 and about 60,000 and each B block having a number average molecular weight between about 30,000 and about 300,000; d. each B block comprises terminal regions adjacent to the A blocks that are rich in conjugated diene units and a region not adjacent to the A blocks that is rich in mono alkenyl arene units; e. the total amount of mono alkenyl arene in the hydrogenated block copolymer is about 20 percent weight to about 80 percent weight; and f. the weight percent of mono alkenyl arene in each B block is between about 10 percent and about 75 percent.