Method for producing statistical copolymer containing chloroprene monomer unit and unsaturated nitrile monomer unit, statistical copolymer, latex and use of same

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United States of America Patent

PATENT NO 11566087
APP PUB NO 20200199260A1
SERIAL NO

16612848

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Abstract

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To provide a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit which has a satisfactory oil resistance. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit includes a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction is provided. A rubber composition using a statistical copolymer according to the invention or a vulcanized molded article containing the rubber composition is excellent in terms of oil resistance, mechanical strength, compression set at a low temperature and flex fatigue resistance.

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Patent Owner(s)

Patent OwnerAddress
DENKA COMPANY LIMITED1-1 NIHONBASHI MUROMACHI 2-CHOME CHUO-KU TOKYO 1038338 ?1038338

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujimoto, Kosuke Itoigawa, JP 39 237
Hagiwara, Shogo Itoigawa, JP 17 18
Ishigaki, Yuhei Itoigawa, JP 10 4
Nishino, Wataru Itoigawa, JP 16 1
Onuki, Suguru Itoigawa, JP 10 8
Yamagishi, Uichiro Itoigawa, JP 13 9

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