Polyfunctional vinyl aromatic copolymer and method for manufacturing same, copolymer rubber obtained therefrom, rubber composition, rubber crosslinked material, and tire member

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United States of America

PATENT NO 12037427
SERIAL NO

17277074

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Abstract

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Provided is a polyfunctional vinyl aromatic copolymer having reactivity and solubility that can be used for manufacturing a copolymer rubber and a copolymer rubber material having processability, strength and homogeneity obtained therefrom. The polyfunctional vinyl aromatic copolymer includes: 0.5 mol % or more and 40 mol % or less of a structural unit (a) derived from a divinyl aromatic compound and 60 mol % or more and 99.5 mol % or less of a structural unit (b) derived from a monovinyl aromatic compound, in which at least some of the structural units (a) are a crosslinked structural unit (a2) represented by the following Formula (2) and a vinyl-group-containing structural unit (a1) represented by the following Formula (1):

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CHEMICAL & MATERIAL CO LTD14-1 SOTOKANDA 4-CHOME CHIYODA-KU TOKYO 101-0021

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwashita, Shinichi Tokyo, JP 10 98
Kawabe, Masanao Tokyo, JP 19 118
Kuratomi, Tadashi Tokyo, JP 6 10

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