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1. (WO2018107115) DYNAMIC SEALS, COMPOSITIONS, AND METHODS OF MAKING THE SAME

Pub. No.:    WO/2018/107115    International Application No.:    PCT/US2017/065451
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 09 00:59:59 CET 2017
IPC: C09K 3/10
Applicants: COOPER-STANDARD AUTOMOTIVE INC.
Inventors: GOPALAN, Krishnamachari
LENHART, Robert J.
JI, Gending
HERD-SMITH, Roland
Title: DYNAMIC SEALS, COMPOSITIONS, AND METHODS OF MAKING THE SAME
Abstract:
A sponge sealing member is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.60 g/cm3. The sponge sealing member can exhibit a compression set of from about 5.0 % to about 35.0 %, as measured according to ASTM D 395 (22 hrs @ 70 °C). The silane-crosslinked polyolefin elastomer can also include a first polyolefin having a density less than 0.86 g/cm3, a second polyolefin having a crystallinity less than 40 %, a silane crosslinker, a grafting initiator, a condensation catalyst, and a foaming agent.