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Title:
CEMENT DISPERSANT AND CEMENT COMPOSITION
Document Type and Number:
Japanese Patent JP2015212216
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cement dispersant which has excellent cement dispersibility and allows reduction of the environmental load and a cement composition containing it.SOLUTION: A cement dispersant contains an ingredient (C) which satisfies conditions A and B. Condition A: the ratio of heights of peaks present in the range of the weight average molecular weights of 20-150 to the height of the maximum peak, in measurement of the ingredient (C) by gel permeation chromatography (reference substance: polyethylene glycol), is lower than 3%. Condition B: the ratio of the heights of peaks present in the range of the weight average molecular weight of 20-150 to the height of the maximum peak, in measurement of the alkali-treated ingredient (C'), prepared by subjecting the ingredient (C) to an alkali treatment according to the saponification value measurement method, JIS K0070, by gel permeation chromatography (reference substance: polyethylene glycol), is 3-80%.

Inventors:
YAMAGUCHI TAKASHI
YOKOYAMA SHIGEKI
TAMURA SUMIO
Application Number:
JP2015061555A
Publication Date:
November 26, 2015
Filing Date:
March 24, 2015
Export Citation:
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Assignee:
JUJO PAPER CO LTD
International Classes:
C04B24/26; C04B24/06; C04B24/18; C04B28/02; C08F216/20; C08F220/04; C08F220/28
Domestic Patent References:
JP2010001199A2010-01-07
JPH1081549A1998-03-31
JP2009173527A2009-08-06
JPS60161365A1985-08-23
JP2011240224A2011-12-01
JP2003238227A2003-08-27
JP2003286058A2003-10-07
JP2014040360A2014-03-06
Foreign References:
WO2005066095A12005-07-21
WO2014010572A12014-01-16
Attorney, Agent or Firm:
Hiroaki Sakai