Hydrophilic thickening agent and method of producing same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9139671
APP PUB NO 20130324670A1
SERIAL NO

13981200

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Abstract

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Provide is a cross-linked polymer which is a polymer of a water-soluble ethylenically unsaturated monomer, the cross-linked polymer being cross-linked by a water-soluble crosslinking agent. An aqueous liquid with a pH of 6.8 to 7.0 consisting of water and 1.0% by mass of the cross-linked polymer has an equilibrium compliance at 25° C. of 5.2×10−4 to 1.0×10−1 (1/Pa), while an aqueous liquid with a pH of 6.8 to 7.0 consisting of water and 0.2% by mass of a corresponding cross-linked polymer has a viscosity at 25° C. of 200 mPa·s or more.

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Patent Owner(s)

  • SUMITOMO SEIKA CHEMICALS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Masuda, Tsuyoshi Himeji, JP 44 313
Nakatsuka, Akio Himeji, JP 6 6
Wajima, Ayami Himeji, JP 2 0
Yamauchi, Yoh Osaka, JP 2 0

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