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Title:
CONJUGATED-DIENE-BASED RUBBER
Document Type and Number:
WIPO Patent Application WO/2019/073828
Kind Code:
A1
Abstract:
Provided is a conjugated-diene-based rubber comprising: a polymer block (A) in which an isoprene monomer unit is the principal component; and a polymer block (B) in which a 1,3-butadiene monomer unit is the principal component, wherein at least one of the polymer block (A) and the polymer block (B) contains a unit of a vinyl compound containing a functional group capable of interacting with silica, the weight average molecular weight (Mw) of the polymer block (A) falls within a range of 1,000 to 30,000, and the weight average molecular weight (Mw) of the conjugated-diene-based rubber as a whole falls within a range of 50,000 to 5,000,000.

Inventors:
SAKURAI TAKURO (JP)
IIZUKA TAKASHI (JP)
FUJII MANA (JP)
HAMA HISAKATSU (JP)
Application Number:
JP2018/036453
Publication Date:
April 18, 2019
Filing Date:
September 28, 2018
Export Citation:
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Assignee:
ZEON CORP (JP)
SUMITOMO CHEMICAL CO (JP)
ZS ELASTOMERS CO LTD (JP)
International Classes:
C08F297/02; B60C1/00; C08K3/36; C08L53/00
Domestic Patent References:
WO2016139960A12016-09-09
WO2014129665A12014-08-28
WO2013018424A12013-02-07
Foreign References:
JP2016037543A2016-03-22
JPS62227912A1987-10-06
JP2003531257A2003-10-21
JP2017110230A2017-06-22
US5708092A1998-01-13
GB2241239A1991-08-28
US5527753A1996-06-18
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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