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:
Apr. 03, 2018
Filed:
Jul. 30, 2015
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Sayaka Inoue, Tokyo, JP;
Nobuyoshi Emori, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 236/12 (2006.01); C08J 3/24 (2006.01); C08F 220/18 (2006.01); C08K 5/14 (2006.01); C08F 220/44 (2006.01); C08L 9/02 (2006.01);
U.S. Cl.
CPC ...
C08F 236/12 (2013.01); C08F 220/18 (2013.01); C08K 5/14 (2013.01); C08F 220/44 (2013.01); C08F 2220/1825 (2013.01); C08L 9/02 (2013.01);
Abstract
A nitrile group-containing copolymer rubber contains α,β-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt % and has a Z-average radius of gyration of 100 nm or more. Preferably, the nitrile group-containing copolymer rubber has an iodine value of 120 or less. Further, preferably, the nitrile group-containing copolymer rubber has a plasticity number of 14 to 90. It is possible to provide a nitrile group-containing copolymer rubber able to give a cross-linked rubber excellent in tensile stress, compression set resistance, and low heat buildup property.