Invention Publication
- Patent Title: POLYMER COMPOSITION, CROSS-LINKED PRODUCT, AND TIRE
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Application No.: EP21898150.4Application Date: 2021-11-29
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Publication No.: EP4253081A1Publication Date: 2023-10-04
- Inventor: SENGA, Hirofumi , KIKUCHI, Toshimitsu , SAKAGAMI, Yuto , SANO, Takuya , FUKUMOTO, Takato , HAYAKAWA, Toshiyuki
- Applicant: ENEOS Materials Corporation
- Applicant Address: JP Tokyo 105-0021 9-2, Higashi-Shinbashi 1-chome Minato-ku
- Agency: TBK
- Priority: JP2020197516 20201127
- International Announcement: WO2022114178 20220602
- Main IPC: B60C1/00
- IPC: B60C1/00 ; C08L9/00 ; C08L9/06 ; C08L101/12 ; C08K3/04 ; C08K3/36
Abstract:
A polymer composition includes a conjugated diene-based polymer (A) and a liquid polymer (B), wherein: the conjugated diene-based polymer (A) includes a polymer (A1) satisfying expression (i) when a composition ratio (molar ratio) of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3) and a structural unit represented by formula (4) in the polymer is p, q, r and s, respectively; a glass transition temperature of the polymer (A1) is -40°C or less; and the liquid polymer (B) is polybutadiene, polyisoprene, polyisobutylene, polybutene, or the like. Expression (i):0.75 ≤ (p + (0.5 × r))/ (p + q + (0.5 × r) + s) ≤ 0.97.
Information query