Patent ID: 6759487
Filing Date: 2004-07-06
Classification: C08G,C08K,C08L

Abstract:
A thermoplastic elastomer composition comprising;(A) a thermoplastic polyurethane polymer, (B) a silicone elastomer, wherein the silicone elastomer is the reaction product of a dynamic vulcanization comprising: (Bâ€²) 100 parts by weight of a diorganopolysiloxane gum having a Williams plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and, optionally, (Bâ€³) up to 200 parts by weight of a reinforcing filler, (C) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule and (D) a hydrosilation catalyst, where components (C) and (D) are present in an amount sufficient to cure said diorganopolysiloxane (Bâ€²), wherein the weight ratio of the silicone elastomer to the thermoplastic polyurethane polymer is from 5:95 to 85:15, and the thermoplastic elastomer composition is re-processable.