Title:
CONJUGATED DIENE-BASED POLYMER, RUBBER COMPOSITION, RUBBER-CROSSLINKED SUBSTANCE, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/230725
Kind Code:
A1
Abstract:
Provided is a conjugated diene-based polymer containing at least a conjugated diene monomer unit, wherein: the ionic strength index is at least 25%; the number of peaks in a molecular weight distribution curve obtained through gel permeation chromatography measurement is at least 2; and when, among the peaks in the molecular weight distribution curve, a peak having a maximum peak area ratio is defined as a first peak, and a peak having a second largest peak area ratio is defined as a second peak, the molecular weight distribution (Mw/Mn) of the whole conjugated diene-based polymer is at least 1.50, the molecular weight distribution (Mw/Mn) of the first peak is at most 1.30, and the molecular weight distribution (Mw/Mn) of the second peak is at most 1.30.
Inventors:
SUGINO YOSHITAKA (JP)
OHNO KEITA (JP)
HAMA HISAKATSU (JP)
MORITOMI SATORU (JP)
MIYAZAKI YOSUKE (JP)
OHNO KEITA (JP)
HAMA HISAKATSU (JP)
MORITOMI SATORU (JP)
MIYAZAKI YOSUKE (JP)
Application Number:
PCT/JP2022/018202
Publication Date:
November 03, 2022
Filing Date:
April 19, 2022
Export Citation:
Assignee:
ZS ELASTOMERS CO LTD (JP)
SUMITOMO CHEMICAL CO (JP)
ZEON CORP (JP)
SUMITOMO CHEMICAL CO (JP)
ZEON CORP (JP)
International Classes:
B60C1/00; C08C19/22; C08F236/10; C08K3/011; C08K3/013; C08L15/00
Domestic Patent References:
| WO2018034194A1 | 2018-02-22 | |||
| WO2018181176A1 | 2018-10-04 | |||
| WO2022080236A1 | 2022-04-21 | |||
| WO2018056025A1 | 2018-03-29 |
Foreign References:
| JP2012172077A | 2012-09-10 | |||
| JP2020041136A | 2020-03-19 |
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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