Sumitomo Seika Chemicals Co., Ltd.

Yuichiro Moritmitsu

Shinji Kobayashi

Masatoyo Yoshinaka

A water-soluble copolymer having alkyl-modified carboxyl groups which is able to produce a neutralized viscous liquid in which although its viscosity is very low when no electrolyte exists, the viscosity greatly increases when electrolytes are added, which has a sufficiently high viscosity and a very high transmittance and which has moist textures without stickiness even in the presence of a relatively high concentration of electrolytes, and a thickening agent comprising the same.

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Himeji, Japan

Yuichiro Moritmitsu