Patent ID: 9120923
Filing Date: 2015-09-01
Classification: C08L

Abstract:
1. A thermoplastic elastomer compound, comprising: (a) thermoplastic vulcanizate (TPV) masterbatch of crosslinked polyisobutylene, polyolefin other than polybutene, and a plasticizer selected from the group consisting of polybutene, paraffin oil, and combinations of them; (b) styrene ethylene ethylene propylene styrene (SEEPS); (c) liquid polybutene; (d) additional polyolefin selected from the group consisting of polyethylene, polypropylene, and both polyethylene and polypropylene; (e) polyphenylene ether; and (f) optionally, filler; wherein the compound has a compression set of less than about 22% when tested at 23° C. for 22 hours using ASTM D395 Test Method B.