Patent ID: 7625967
Filing Date: 2009-12-01
Classification: C08F,C08L

Abstract:
1. An oil gel composition comprised of at least one hydrogenated block copolymer and a non-aromatic ester oil or mixture of non-aromatic ester oils, wherein said non-aromatic ester oil is a natural product oil, eicosyl erucate or a C12-15alkyl octanoate wherein said hydrogenated block copolymer has at least one polymer block A and at least one polymer 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 has a number average molecular weight between about 3,000 and about 60,000 and each B block has a number average molecular weight between about 20,000 and about 300,000; d. each B block comprises terminal regions adjacent to the A blocks that are rich in conjugated diene units and one or more regions not adjacent to the A blocks that are 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; and wherein the amount of non-aromatic ester oil is between about 250 to about 2000 parts by weight per 100 parts by weight of said at least one hydrogenated block copolymer.