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Patent Searching and Data


Title:
COPOLYMER RUBBER, METHOD OF PRODUCING SAME, AND CROSSLINKED RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2019/065662
Kind Code:
A1
Abstract:
Provided are a copolymer rubber that is workable, strong, and homogeneous, and is suitable as a resin modifier or the like; a crosslinked rubber composition having excellent mechanical strength, wear resistance, etc.; and a polyfunctional vinyl aromatic copolymer that is a superior raw material for the above. Polymer rubber obtained by copolymerizing raw materials including a polyfunctional vinyl aromatic copolymer (A), a conjugated diene compound (B), and an aromatic vinyl compound (C), the rubber being characterized in that: the polyfunctional vinyl aromatic copolymer (A) comprises a structural unit (a) originating from a divinyl aromatic compound, a structural unit (b) originating from a monovinyl aromatic compound, and a structural unit (c) originating from a tertiary amino group, including at least 2 mol% of structural unit (a), and at least some of structural unit (a) being present in the form of a vinyl-group-containing structural unit (a1); and the number-average molecular weight of the rubber is 300 to 100,000.

Inventors:
KURATOMI TADASHI (JP)
SHIMIZU TAKEHIRO (JP)
KAWADA ATSUSHI (JP)
KAWABE MASANAO (JP)
Application Number:
PCT/JP2018/035540
Publication Date:
April 04, 2019
Filing Date:
September 26, 2018
Export Citation:
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Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
C08F8/32; C08F212/34; C08F257/00; C08L51/00
Domestic Patent References:
WO2018084128A12018-05-11
Foreign References:
JP2008189745A2008-08-21
JP2016190899A2016-11-10
JP2010209279A2010-09-24
JP2007332273A2007-12-27
JP2007230944A2007-09-13
Attorney, Agent or Firm:
SASAKI Kazuya et al. (JP)
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