Title:
METHOD FOR PRODUCING MODIFIED CONJUGATED-DIENE-BASED POLYMER, POLYMER COMPOSITION, CROSSLINKED OBJECT, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2021/085616
Kind Code:
A1
Abstract:
A method for producing a modified conjugated-diene-based polymer, the method comprising: a polymerization step in which monomers including a conjugated diene compound are polymerized in the presence of an alkali metal compound or an alkaline-earth metal compound to obtain a polymer having an active end; a modification step in which the polymer having an active end is reacted with a compound [M] having a plurality of hydrocarbyloxysilyl groups to obtain a modified polymer; and a mixing step in which the modified polymer obtained by the modification step is mixed with a compound [N] having one hydrocarbyloxysilyl group and at least one compound [C] selected from the group consisting of alcohols having 6-20 carbon atoms.
Inventors:
KOTO YUMA (JP)
WATANABE KEISUKE (JP)
ITOU KEN-ICHI (JP)
WATANABE KEISUKE (JP)
ITOU KEN-ICHI (JP)
Application Number:
PCT/JP2020/040893
Publication Date:
May 06, 2021
Filing Date:
October 30, 2020
Export Citation:
Assignee:
JSR CORP (JP)
International Classes:
B60C1/00; C08C19/25; C08F8/00; C08F36/06; C08K3/36; C08L9/06
Domestic Patent References:
| WO2007114203A1 | 2007-10-11 | |||
| WO2017221943A1 | 2017-12-28 | |||
| WO2017221943A1 | 2017-12-28 |
Foreign References:
| JP2014177519A | 2014-09-25 | |||
| JP2017165680A | 2017-09-21 | |||
| US20100113851A1 | 2010-05-06 | |||
| JP2014177519A | 2014-09-25 |
Other References:
See also references of EP 4052925A4
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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