Title:
CONJUGATED DIENE POLYMER, RUBBER COMPOSITION, CROSSLINKED RUBBER PRODUCT, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/080235
Kind Code:
A1
Abstract:
The present invention provides a conjugated diene polymer which comprises at least a conjugated diene monomer unit, wherein: the molecular weight distribution curve thereof as obtained by GPC measurement has three or more peaks; and with respect to the molecular weight distribution curve, if the peak detected last in the GPC measurement is expressed as the last detected peak (Z), and the peak that has the maximum peak area among the peaks other than the last detected peak (Z) is expressed as the maximum peak (L), the peak top molecular weight of the last detected peak (Z) is from 80,000 to 250,000, and the adsorption ratio of a polymer chain that constitutes the maximum peak (L) with respect to silica is less than 40%.
Inventors:
SAKADA MASAHIDE (JP)
NISHIZAWA KEITA (JP)
OHNO KEITA (JP)
NISHIZAWA KEITA (JP)
OHNO KEITA (JP)
Application Number:
PCT/JP2021/037209
Publication Date:
April 21, 2022
Filing Date:
October 07, 2021
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; C08F36/04; C08K3/011; C08K3/013; C08L9/00
Domestic Patent References:
| WO2018056025A1 | 2018-03-29 | |||
| WO2018147312A1 | 2018-08-16 | |||
| WO2018164053A1 | 2018-09-13 | |||
| WO2018056025A1 | 2018-03-29 |
Foreign References:
| JP2009030027A | 2009-02-12 | |||
| JP2012172077A | 2012-09-10 | |||
| JP2019167420A | 2019-10-03 | |||
| JP2020007532A | 2020-01-16 | |||
| JP2020026524A | 2020-02-20 | |||
| JP2020033546A | 2020-03-05 | |||
| JP2020037678A | 2020-03-12 | |||
| JP2020041136A | 2020-03-19 |
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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