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Title:
CONJUGATED DIENE POLYMER AND METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, CROSSLINKED PRODUCT, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2022/196643
Kind Code:
A1
Abstract:
The conjugated diene polymer has a value α represented by numerical formula (i) of 0.65-0.97 when the composition ratio (molar ratio) of structural units represented by formulas (1)-(4) in the polymer is taken as p, q, r, and s, respectively. The conjugated diene polymer includes 25-75 mass% of a polymer (A1) having a multi-branched structure having four or more molecular chains, and the polymer (A1) has a functional group including at least one element selected from the group consisting of nitrogen, oxygen, and sulfur at a terminal portion and/or a branch point portion of the polymer. α = (p + (0.5 × r)) / (p + q + (0.5 × r) + s) ... (i)

Inventors:
NAKAHAMA TATSUMOTO (JP)
KIKUCHI TOSHIMITSU (JP)
SENGA HIROFUMI (JP)
SANO TAKUYA (JP)
FUKUMOTO TAKATO (JP)
SAKAGAMI YUTO (JP)
HAYAKAWA TOSHIYUKI (JP)
Application Number:
PCT/JP2022/011366
Publication Date:
September 22, 2022
Filing Date:
March 14, 2022
Export Citation:
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Assignee:
ENEOS MAT CORPORATION (JP)
International Classes:
C08F8/04; B60C1/00; C08F8/30; C08F36/06; C08K3/013; C08L9/00
Domestic Patent References:
WO2014126184A12014-08-21
WO2010140659A12010-12-09
WO2018164053A12018-09-13
WO2018199280A12018-11-01
WO2008123164A12008-10-16
WO2017221943A12017-12-28
WO2014133097A12014-09-04
Foreign References:
JP2000053706A2000-02-22
JPH08245839A1996-09-24
JP2004513087A2004-04-30
JP2021041264A2021-03-18
JPS634841B21988-02-01
JPS6437970A1989-02-08
JP2011140613A2011-07-21
Attorney, Agent or Firm:
YAMADA, Tsuyoshi (JP)
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