公开(公告)号：US20220315741A1

公开(公告)日：2022-10-06

申请号：US17689468

申请日：2022-03-08

Applicant: TOYODA GOSEI CO., LTD. ,  ASM INC.

Inventor： Takanori NAKAI ,  Hideki TAMAI ,  Hiromitsu TAKEUCHI ,  Makoto ISHIDA ,  Hideyuki IMAI ,  Katsunari INOUE

IPC: C08L9/00

Abstract: A rubber composition in which a diene rubber containing hydroxyl groups and a polyrotaxane containing a hydrocarbon-modified cyclodextrin as cyclic molecules are urethane-crosslinked by an isocyanate that is a crosslinking agent.

公开(公告)号：US20230067211A1

公开(公告)日：2023-03-02

申请号：US17799540

申请日：2020-12-22

Applicant: TOYODA GOSEI CO., LTD. ,  KYOTO UNIVERSITY ,  NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY

Inventor： Hideki TAMAI ,  Takanori NAKAI ,  Hideyuki IMAI ,  Makoto ISHIDA ,  Tomoki OGOSHI ,  Koki MAEDA ,  Katsuto ONISHI ,  Tada-Aki YAMAGISHI ,  Takahiro KAKUTA ,  Masafumi YAGYU

IPC: C08G65/26

Abstract: A polyrotaxane of high heat resistance contains a linear molecule, a cyclic molecule enclosing the linear molecule such that the cyclic molecule is skewered with the linear molecule, and 5 blocking groups disposed at both ends of the linear molecule. The cyclic molecule contains an aromatic ring having, on a side chain, a phenolic hydroxyl group. The polyrotaxane can be produced by dissolving, in a methanol-containing solvent, a linear molecule and a cyclic 10 molecule containing an aromatic ring having, on a side chain, a phenolic hydroxyl group, to yield a pseudo polyrotaxane in which the cyclic molecule encloses the linear molecule such that the cyclic molecule is skewered with the linear molecule; and dissolving the pseudo polyrotaxane and a blocking group 15 material in a solvent, to dispose blocking groups at both ends of the linear molecule.