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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10689471 B1

PDFFull Text
Date of Patent:
Jun. 23, 2020

Filed:

Dec. 08, 2017

Microdense seals, compositions, and methods of making the same

Applicant:

Cooper-standard Automotive Inc., Novi, MI (US);

Inventors:

Krishnamachari Gopalan, Troy, MI (US);

Robert J. Lenhart, Fort Wayne, IN (US);

Gending Ji, Waterloo, CA;

Roland Herd-Smith, Brignancourt, FR;

Assignee:

COOPER-STANDARD AUTOMOTIVE, INC., Novi, MI (US);

Attorneys:

Paschall & Associates

Mary Jo Boldingh

Primary Examiner:

Irina S Zemel

Int. Cl.
CPC ...
C08F 255/02 (2006.01); C08J 9/00 (2006.01); C08J 3/24 (2006.01); C09K 3/10 (2006.01); C08K 3/011 (2018.01); C08J 9/228 (2006.01); C08K 3/36 (2006.01); C08L 23/08 (2006.01); C08L 23/12 (2006.01); C08K 5/00 (2006.01); C08L 23/14 (2006.01); C08L 23/16 (2006.01);
U.S. Cl.
CPC ...
C08F 255/02 (2013.01); C08J 3/24 (2013.01); C08J 9/0061 (2013.01); C08J 9/228 (2013.01); C08K 3/011 (2018.01); C08K 3/36 (2013.01); C08K 5/0025 (2013.01); C08L 23/0815 (2013.01); C08L 23/12 (2013.01); C08L 23/14 (2013.01); C08L 23/142 (2013.01); C08L 23/16 (2013.01); C09K 3/10 (2013.01); C08F 2500/21 (2013.01); C08J 2351/06 (2013.01); C08J 2423/08 (2013.01); C08J 2423/12 (2013.01); C08J 2423/14 (2013.01); C08L 2205/025 (2013.01); C08L 2312/08 (2013.01); C09K 2003/1068 (2013.01); C09K 2200/0494 (2013.01); C09K 2200/062 (2013.01);
Abstract

A microdense sealing member is provided. The microdense sealing member includes a composition having a foamed silane-crosslinked polyolefin elastomer with a density less than 0.70 g/cm. The microdense sealing member can exhibit a compression set of from about 5.0% to about 35.0% measured according to ASTM D 395 (22 hrs @ 70° C.). The foamed silane-crosslinked polyolefin elastomer can be produced from a blend including a first polyolefin having a density less than 0.86 g/cm, a second polyolefin having a crystallinity less than 60° C., a silane crosslinker, a grafting initiator, a condensation catalyst, and a microencapsulated foaming agent.

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