Water-absorbent resin powder and production method thereof

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12187860
APP PUB NO 20210115198A1
SERIAL NO

17055153

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Abstract

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The present invention addresses the problem of providing; a water absorbent resin powder having a reduced amount of fine powder generated and a reduced amount of fine powder recovered; and a production method for the water absorbent resin. The production method of the present invention includes a drying step and a fine powder granulation step. The drying step is for obtaining a dried polymer by drying a particulate water-containing gel crosslinked polymer which is obtained using an acid group-containing unsaturated monomer as a main component. The fine powder granulation step is for obtaining a fine powder granulated product by adding a binder and an adhesion control agent to a fine powder made of a water absorbent resin. In this production method, the obtained fine powder granulated product is recovered in the drying step or in any step before the drying step.

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Patent Owner(s)

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

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adachi, Yoshifumi Himeji, JP 33 668
Arake, Tomoyuki Himeji, JP 4 7
Hayashi, Hiroki Himeji, JP 241 3079
Inoue, Masahumi Himeji, JP 2 2
Katakura, Naoki Suita, JP 3 6
Katsube, Shin-ya Himeji, JP 5 11
Kumagai, Sumito Himeji, JP 3 2
Matsumoto, Satoshi Himeji, JP 209 1933
Sato, Mai Himeji, JP 10 14
Shobo, Yoshihiro Suita, JP 8 29
Wakabayashi, Ryota Himeji, JP 13 38
Yorino, Tsuyoshi Himeji, JP 7 21

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