- Patent Title: Conjugated diene-based polymer, branching agent, production method for conjugated diene-based polymer, extended conjugated diene-based polymer, rubber composition, and tire
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Application No.: US17042230Application Date: 2019-07-31
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Publication No.: US11339240B2Publication Date: 2022-05-24
- Inventor: Kenta Hisamura , Miho Yamamoto
- Applicant: Asahi Kasei Kabushiki Kaisha
- Applicant Address: JP Tokyo
- Assignee: Asahi Kasei Kabushiki Kaisha
- Current Assignee: Asahi Kasei Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Morgan, Lewis & Bockius LLP
- Priority: JPJP2018-188604 20181003
- International Application: PCT/JP2019/029980 WO 20190731
- International Announcement: WO2020/070961 WO 20200409
- Main IPC: C08F236/10
- IPC: C08F236/10 ; C08L47/00 ; C08L15/02 ; C08K3/04 ; C08K3/36 ; B60C1/00
Abstract:
A conjugated diene-based polymer of the present invention has an absolute molecular weight measured by viscosity detector-equipped GPC-light scattering measurement, of 40×104 or more and 5000×104 or less, has a branching number (Bn) measured by the viscosity detector-equipped GPC-light scattering measurement, of 8 or more, and has a modification ratio of 60% by mass or more.
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