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.:
Date of Patent:
Dec. 07, 2021
Filed:
Aug. 16, 2017
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Shingo Okuno, Tokyo, JP;
Yasuo Tsunogae, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 61/08 (2006.01); C08K 3/04 (2006.01); C08J 3/24 (2006.01); C08L 65/00 (2006.01); B60C 1/00 (2006.01);
U.S. Cl.
CPC ...
C08G 61/08 (2013.01); C08J 3/24 (2013.01); C08K 3/04 (2013.01); C08L 65/00 (2013.01); B60C 1/00 (2013.01); C08G 2261/12 (2013.01); C08G 2261/1644 (2013.01); C08G 2261/3321 (2013.01); C08G 2261/76 (2013.01); C08G 2380/00 (2013.01);
Abstract
A crosslinked rubber is produced by crosslinking a polymer composition containing 100 parts by weight of a rubber component containing a cyclopentene ring-opening polymer and 20 to 200 parts by weight of carbon black, wherein, when the crosslinked rubber is subjected to an ozone treatment in which the rubber is maintained at 40° C. and an ozone concentration of 50 pphm for 144 hours under a 20% tensile strain, the crosslinked rubber shows a rate of change in tensile strength before and after ozone treatment of within ±70%.