DISPERSANT FOR HYDRAULIC POWDER

Japanese Patent JP2017001897

A

PROBLEM TO BE SOLVED: To provide a dispersant for hydraulic powder excellent in flowability, less in generation of lime or sludge even when using centrifugal molding, of which a cured body has high strength and capable of maintaining these effects regardless of slump values.SOLUTION: There is provided a dispersant for hydraulic powder containing a polycarboxylic acid copolymer, in which a copolymer (I) contains a monomer(1a) having an average addition molar number of an alkyleneoxy group of 15 to 80 (inclusive) and an unsaturated carboxylic acid-based monomer (b) as constitutional monomers at predetermined amount, a copolymer (II) contains a monomer(2a) having an average addition molar number of an alkyleneoxy group of 100 to 300 (inclusive) and an unsaturated carboxylic acid-based monomer (b) as constitutional monomers at predetermined amount, with percentage of total of the copolymer (I) and the copolymer (II) of 75 mass% or more, an absolute value of difference of mol% (X) of the monomer (b) to the total of the monomer (1a) and the monomer (b) in the copolymer (I) and mol% (X) of the monomer (b) to the total of the monomer (2a) and the monomer (b) in the copolymer (II) of 15 to 50 (inclusive) and mass ratio of the copolymer (I)/copolymer (II) of 50/50 to 95/5 (inclusive).SELECTED DRAWING: None

AKINO TAKEAKI
OMAE TOMOYA

JP2015114301A

January 05, 2017

June 04, 2015

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KAO CORP

C04B24/26; B28B1/20; B28B11/24; C04B28/02; C08F290/06

JP2001316151A	2001-11-13
JPH0940446A	1997-02-10
JP2006083001A	2006-03-30
JP2009155173A	2009-07-16
JP2007254221A	2007-10-04
JP2010070395A	2010-04-02
JP2010070396A	2010-04-02
JP2016121025A	2016-07-07

Satoshi Furuya
Yoshitsune Kazumasa

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