Title:
POLYURETHANE-POLYDIENE COPOLYMER, RUBBER COMPOSITION, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2023/210068
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a copolymer having excellent low heat generation properties and fracture resistance. In order to fulfill this purpose, the present invention is a polyurethane-polydiene copolymer including a urethane skeleton and a diene skeleton, wherein the polyurethane-polydiene copolymer is characterized by being obtained by copolymerization of at least (A) a polydiene having a hydroxyl group on both ends and (C) a compound having at least two isocyanate groups.
Inventors:
OISHI SHIGEKI (JP)
SHODA YASUHIRO (JP)
SHODA YASUHIRO (JP)
Application Number:
PCT/JP2023/000675
Publication Date:
November 02, 2023
Filing Date:
January 12, 2023
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08G18/69; B60C1/00; C08G18/65; C08G18/76; C08K3/36; C08L21/00; C08L75/14
Domestic Patent References:
| WO2021054254A1 | 2021-03-25 |
Foreign References:
| JPS4951340A | 1974-05-18 | |||
| JPS5232996A | 1977-03-12 | |||
| JP2021046524A | 2021-03-25 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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