Water absorbent agent having water-absorbent resin as main component and comprising a sulfur-containing reducing agent

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United States of America

PATENT NO 12053756
SERIAL NO

17421947

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Abstract

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The present invention provides a water absorbent agent that achieves both improvement in the water absorption time thereof and reduction in the residual monomer variation rate thereof. A present inventive method for producing a water absorbent agent having a water-absorbent resin as a main component, the method including a surface-crosslinking step for a water-absorbent resin and a mixing step for a sulfur-containing reducing agent aqueous solution, the method satisfies (1) a specific surface area of the water-absorbent resin, (2) an average droplet diameter of the sulfur-containing reducing agent aqueous solution, and a temperature of the aqueous solution, (3) stirring-mixing conditions, and (4) a heating and drying step conditions.

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Patent Owner(s)

Patent OwnerAddress
NIPPON SHOKUBAI CO LTD1-1 KORAIBASHI 4-CHOME CHUO-KU OSAKA-SHI OSAKA 5410043 ?5410043

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kimura, Kazuki Himeji, JP 64 527
Takeda, Daisuke Himeji, JP 82 1087

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