Cement dispersants comprising graft copolymers

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United States of America Patent

PATENT NO 6894121
APP PUB NO 20040077899A1
SERIAL NO

10686258

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Abstract

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Cement dispersants made of graft copolymers of a specified type and/or their salts are produced by using as an intermediate product allyletherester monomers prepared by an esterification reaction of α-allyl-ω-hydroxy-polyoxyalkylene refined so as to have peroxide value less than 5.0 meq/kg and aliphatic monocaboxylic acid under a specified condition in the absence of solvent and in the presence of an antioxidant.

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Patent Owner(s)

Patent OwnerAddress
TAKEMOTO YUSHI KABUSHIKI KAISHA2-5 MINATO-MACHI GAMAGORI-SHI AICHI-KEN 443-8611

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kinoshita, Mitsuo Aichi, JP 59 523
Tamaki, Shinji Aichi, JP 75 942

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