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:
Sep. 01, 2026
Filed:
Nov. 27, 2020
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec (Beijing) Research Institute of Chemical Industry Co., Ltd., Beijing, CN;
Nian Gao, Beijing, CN;
Jianjun Chen, Beijing, CN;
Hongbo Li, Beijing, CN;
Lin Xu, Beijing, CN;
Ning Wu, Beijing, CN;
Jianguo Hao, Beijing, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SINOPEC (BEIJING) RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD., Beijing, CN;
Abstract
An ethylene copolymer and a method for preparing same, and a composition, crosslinked polymer, and tire containing said ethylene copolymer are provided. The ethylene copolymer contains an ethylene structural unit derived from ethylene and a conjugated diene structural unit derived from a conjugated diene. Taking the total amount of said ethylene copolymer as the reference, the content of said conjugated diene structural unit is 25-45 mol %. The conjugated diene is formed by 1,2-polymerization and the content of 1,2-polymeric vinyl structural units having side chain double bonds is 20-40 mol %. Taking the total number of conjugated diene structural units in the ethylene copolymer as the reference. The total amount of said 1,2-polymeric structural units is 95 mol % or more, and the ethylene copolymer has a weight average molecular weight of 20,000 to 300,000.