Purification method of carboxyl group-containing polyoxyethylene derivative

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United States of America Patent

PATENT NO 8163869
SERIAL NO

12979023

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Abstract

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An object of the present invention is to provide a purification method of separating impurities from a carboxyl group-containing polyoxyethylene derivative having a molecular weight of 2,000 to 100,000.

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Patent Owner(s)

Patent OwnerAddress
NOF CORPORATION20-3 EBISU 4-CHOME SHIBUYA-KU TOKYO 1506019 ?1506019

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichikawa, Takashi Kanagawa, JP 136 1460
Matsuo, Satoshi Kanagawa, JP 26 368
Nakamoto, Ken-ichiro Kanagawa, JP 15 138
Yoshimura, Shuichi Kanagawa, JP 5 14

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