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:
Nov. 12, 2024
Filed:
Mar. 27, 2020
Zs Elastomers Co., Ltd., Tokyo, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Hiroshi Aoshima, Ichihara, JP;
Jesus Rodriguez Castanon, Sodegaura, JP;
Hisakatsu Hama, Sodegaura, JP;
ZS ELASTOMERS CO., LTD., Tokyo, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
SEON CORPORATION, Tokyo, JP;
Abstract
A conjugated diene copolymer has a covalent bond reversibly dissociated and added by heat, and has at least two peaks in each of curves of molecular weight distributions measured at 40° C. and 60° C. by gel permeation chromatography, wherein a change rate of the proportion of the area of the peak having the lowest molecular weight in measurement at 60° C. to the proportion of the area of the peak having the lowest molecular weight in measurement at 40° C.