CEMENT DISPERSING AGENT

WIPO Patent Application WO/2008/032800

A1

[PROBLEMS] To provide a cement dispersing agent which has a high water reducing property and a good slump retention property, and can achieve a low concrete viscosity and good applicability. [MEANS FOR SOLVING PROBLEMS] Disclosed is a cement dispersing agent comprising a polycarboxylic acid polymer which is formed by mixing a constituent unit (I) composed of a reactive alcohol alkylene oxide adduct and a constituent unit (II) composed of a reactive dibasic acid and optionally a constituent unit (III) having a polyamidoamine therein with one another, wherein the alkylene oxide adduct in the constituent unit (I) is mainly composed of ethylene oxide and has an alkylene oxide having 3 or 4 carbon atoms added to its terminus in a given amount. The cement dispersing agent is excellent in a water reducing property and a retention property and can achieve a low concrete viscosity.

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IKEDA AKIRA (JP)
KOSHISAKA SEIICHI (JP)
SUGA AKIRA (JP)
OKADA TOMOHISA (JP)

PCT/JP2007/067877

March 20, 2008

September 13, 2007

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TOHO CHEM IND CO LTD (JP)
IKEDA AKIRA (JP)
KOSHISAKA SEIICHI (JP)
SUGA AKIRA (JP)
OKADA TOMOHISA (JP)

C04B24/26; C08F290/06; C08G65/332; C08G81/02; C04B103/40

JP2003171156A	2003-06-17
JPH11106247A	1999-04-20
JP2005126271A	2005-05-19
JP2004002174A	2004-01-08
JP2004182583A	2004-07-02
JP2000191356A	2000-07-11

HANABUSA, Tsuneo et al. (Shin-Ochanomizu Urban Trinity2, Kandasurugadai 3-chome, Chiyoda-ku Tokyo 62, JP)

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