Sulfonate group-containing polymer and method of producing the same

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United States of America Patent

PATENT NO 10766991
APP PUB NO 20170247487A1
SERIAL NO

15329135

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Abstract

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A sulfonate group-containing copolymer is provided which comprising a structural unit (a) derived from a sulfonate group-containing monomer (A); a structural unit (b) derived from a (poly)oxyalkylene monomer (B); a structural unit (c) derived from a carboxyl group-containing monomer (C). The sulfonate group-containing copolymer comprises from 20% to 90% by mass in an acid form equivalent of the structural unit (c) in 100% by mass of all the structural units constituting the sulfonate group-containing copolymer. The product (P×Mw×n) of the ratio by mass P of the structural unit (b) to the structural unit (a) multiplied by the weight average molecular weight Mw of the sulfonate group-containing copolymer multiplied by the value n is from 950,000 to 800,000,000.

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Patent Owner(s)

Patent OwnerAddress
NIPPON SHOKUBAI CO LTD1-1 KORAIBASHI 4-CHOME CHUO-KU OSAKA-SHI OSAKA 541-0043

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hemmi, Akiko Osaka, JP 21 130
Liu, Xiaoyan Beijing, CN 85 248
Matsumoto, Rika Osaka, JP 21 30
Mizoguchi, Hirotaka Osaka, JP 10 22
Qin, Peng Beijing, CN 66 244
Wang, Xiaoli Beijing, CN 100 658
Zhai, Xianling Beijing, CN 5 20

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