Title:
CEMENT DISPERSANT AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3538827
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a cement dispersant having extremely superior dispersing ability and excellent also in dispersion sustaining property.
SOLUTION: This cement dispersant is based on a high molecular compd. obtd. by copolymerizing 20-35 pts.wt. carboxylic acid (A) having an unsatd. bond with 60-75 pts.wt. polyoxyalkylene monomer having unsatd. bonds and 1-10 pts.wt. allylphenol (C) and allowing the resultant copolymer to reactor with a dispersant (E) having a phenol ring by means of an aq. formabledyde soln. (D). The total amt. of the components A, B, C is 100 pts.wt. the amt. (pts.wt.) of the component D (corresponding to 37% aq.soln.) is 1-5 times that of the component C and the ratio (pts.wt.) of (A+B+C):E (corresponding to solid matter) is (1:8) to (9:1).
Inventors:
Kawamura, Masanobu
Nishimori, Yoshito
Mihara, Susumu
Hikasa, Shigeki
Nakamoto, Tomofumi
Nishimori, Yoshito
Mihara, Susumu
Hikasa, Shigeki
Nakamoto, Tomofumi
Application Number:
JP7712297A
Publication Date:
June 14, 2004
Filing Date:
March 28, 1997
Export Citation:
Assignee:
NIPPON PAPER IND CO LTD
International Classes:
C04B24/18; C04B24/20; C04B24/26; C04B24/30; C08F8/28; C08F290/00; C08F290/06; C08G8/00; C08G8/08; C08L55/00; C04B103/40; (IPC1-7): C04B24/30; C04B24/18; C04B24/20; C04B24/26
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