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:
Jul. 03, 2018
Filed:
May. 22, 2015
Otsuka Chemical Co., Ltd., Osaka-shi, Osaka, JP;
Aya Saiki, Kunitachi, JP;
Hidehiro Minashima, Kodaira, JP;
Yuzaburo Yano, Kodaira, JP;
Noriaki Shiina, Osaka, JP;
Kazuhiro Kodama, Osaka, JP;
Mifuyu Ueno, Osaka, JP;
Takashi Sato, Osaka, JP;
Shinya Nakashima, Osaka, JP;
Masaki Abe, Osaka, JP;
OTSUKA CHEMICAL CO., LTD., Osaka-shi, Osaka, JP;
Abstract
Provided is a rubber composition that has better weather resistance than conventional rubber compositions and can inhibit rubber article surface discoloration. The rubber composition contains at least one rubber component selected from natural rubber and diene-based synthetic rubbers and, blended therewith, at least one bisphenyldiamine compound represented by formula (I). In formula (I), R, R, R, and Reach represent, independently of one another, a hydrogen atom, an alkyl group having a carbon number of 1-10, or a phenyl group, but Rand Rdo not both simultaneously represent a hydrogen atom and Rand Rdo not both simultaneously represent a hydrogen atom, Rand Reach represent, independently of one another, an alkyl group having a carbon number of 1-8 or an aralkyl group, A represents an alkylene group having a carbon number of 1-12, and l, m, and n each represent an integer of 0 or 1.