Thermoplastic silicone elastomers

摘要

There is disclosed a method for preparing a thermoplastic elastomer, said method comprising: (I) mixing (A) a thermoplastic resin selected from the group consisting of a polyolefin and a poly(butylene terephthalate), (B) a diorganopolysiloxane having a plasticity of at least 30 and having an average of at least 2 alkenyl radicals in its molecule, (C) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule, (D) optionally, a reinforcing filler and (E) a hydrozilation catalyst; and (II) dynamically curing said diorganopolysiloxane (B), wherein the amount of said diorganopolysiloxane (B) used is such that at least one property of the thermoplastic elastomer selected from tensile strength or elongation is at least 25% greater than the respective property for a corresponding simple blend wherein said diorganopolysiloxane is not cured.