Patent ID: 11939473
Assignee: CELANESE INTERNATIONAL CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A thermoplastic vulcanizate composition comprising: (i) from 10 to 80 wt. % of a dispersed phase of rubber comprising an ethylene propylene diene terpolymer that is at least partially cured; (ii) from 5 to 75 wt. % of a continuous thermoplastic phase including at least one thermoplastic polymer comprising a propylene ethylene copolymer; (iii) from 0.2 to 20 wt. % of a first polysiloxane composition comprising a migratory siloxane polymer physically dispersed in a first thermoplastic material, wherein the migratory siloxane polymer of first polysiloxane composition has a viscosity ranging from 30,000 to 70,000 mPa.s (measured at 25° C.), and (iv) from 0.2 to 20 wt. % of a second polysiloxane composition comprising a non-migratory, siloxane polymer bonded to a second thermoplastic material.