	US 11,939,473 B2
	Thermoplastic vulcanizates
Prashant Bhadane, Houston, TX (US); Chad Michael Houghton, Houston, TX (US); Oscar Oansuk Chung, Houston, TX (US); Eric Paul Jourdain, Rhode Saint Genese (BE); and Hang Dong, Shanghai (CN)
Assigned to Celanese International Corporation, Irving, TX (US)
Appl. No. 16/963,467
Filed by Celanese International Corporation, Irving, TX (US)
PCT Filed Dec. 7, 2018, PCT No. PCT/US2018/064380 § 371(c)(1), (2) Date Jul. 20, 2020, PCT Pub. No. WO2019/143419, PCT Pub. Date Jul. 25, 2019.
Claims priority of provisional application 62/618,823, filed on Jan. 18, 2018.
Prior Publication US 2020/0362148 A1, Nov. 19, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 9/00 (2006.01)

CPC C08L 9/00 (2013.01) [C08L 2205/025 (2013.01); C08L 2205/035 (2013.01); C08L 2205/22 (2013.01); C08L 2207/04 (2013.01)]

19 Claims

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.