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. 23, 2025
Filed:
Dec. 02, 2020
Toyoda Gosei Co., Ltd., Kiyosu, JP;
The University of Tokyo, Tokyo, JP;
Takanori Nakai, Kiyosu, JP;
Naoki Iwase, Kiyosu, JP;
Naoyuki Akahori, Kiyosu, JP;
Hideyuki Imai, Kiyosu, JP;
Hidekazu Kurimoto, Kiyosu, JP;
Makoto Ishida, Kiyosu, JP;
Kohzo Ito, Tokyo, JP;
Rina Maeda, Tokyo, JP;
Shota Ando, Tokyo, JP;
Katsunari Inoue, Kashiwashi, JP;
TOYODA GOSEI CO., LTD., Aichi-pref., JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
The present invention provides a crosslinked polymer composition exhibiting significantly improved elongation at break over conventional ones, and a polymer composition and a polyrotaxane, each of which can be used as a raw material of the crosslinked polymer composition. The polyrotaxane contains a linear molecule, a cyclic molecule, and a blocking group, wherein the cyclic molecule has a hydrosilyl group. The polymer composition contains the polyrotaxane and a polymer, wherein the polymer has a double bond on at least either a main chain or a side chain. The crosslinked polymer composition is produced by crosslinking of the polymer composition through chemical reaction between the hydrosilyl group of the cyclic molecule and the double bond of the polymer.