MODIFIED VINYL AROMATIC COPOLYMER, METHOD FOR PRODUCING SAME, MODIFIED CONJUGATED DIENE COPOLYMER OBTAINED FROM SAME, RESIN COMPOSITION, CROSSLINKED RESIN AND STRUCTURAL MEMBER

WIPO Patent Application WO/2023/100993

A1

Provided are: a modified vinyl aromatic copolymer having reactivity and solubility which make the copolymer usable in producing copolymer rubbers; and a copolymer rubber material which is obtained from the modified vinyl aromatic copolymer and exhibits processability, strength and homogeneity.　This modified vinyl aromatic copolymer is characterized by containing structural units (a) derived from a divinyl aromatic compound, structural units (b) derived from a monovinyl aromatic compound, and structural units (c) derived from a conjugated diene compound, and characterized in that 95 mol% or more of structural units (a) are crosslinked structural units (a1) represented by formula (1), that the copolymer is modified by at least one type of functional group selected from the group consisting of an amino group, an alkoxysilyl group and a hydroxyl group, with 30 mol% or more of the functional groups bonding to the structural unit (c) derived from a conjugated diene compound, and that the number average molecular weight Mn of the copolymer is 500-30,000.　

KAWABE MASANAO (JP)
KURATOMI TADASHI (JP)

PCT/JP2022/044472

June 08, 2023

December 01, 2022

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NIPPON STEEL CHEMICAL & MAT CO LTD (JP)

C08C19/00; C08F4/44; C08F212/00; C08F236/04; C08K3/013

WO2020262371A1	2020-12-30
WO2003029299A1	2003-04-10
WO2020067336A1	2020-04-02

JP2013155268A

2013-08-15

SASAKI Kazuya et al. (JP)

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