C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 24/26 (2006.01) C04B 24/38 (2006.01) C04B 28/02 (2006.01) C04B 40/00 (2006.01)
Patent
CA 2460517
An additive for cement compositions which has excellent storage stability and suffers neither a significant viscosity increase nor gelation even when stored for long; and a cement composition containing the additive. The additive is characterized by containing (A) a polycarboxylic acid copolymer and/or a salt thereof, (B) a water-soluble cellulose ether, and (C) an antifoaming agent.
L'invention porte: sur un additif pour ciment présentant une excellente stabilité d'entreposage puisque ne subissant pas d'accroissement notable de viscosité et qu'insensible au gel même en cas de stockage de longue durée, et sur les ciments le contenant. Ledit additif contient: (A), un copolymère d'acide polycarboxylique et/ou l'un de ses sels, (B), un éther cellulosique hydrosoluble, et (C), un agent antimoussant.
Okazawa Satoshi
Sasage Yoshiaki
Yaguchi Minoru
Yamakawa Tsutomu
Nmb Co. Ltd.
Shin-Etsu Chemical Co. Ltd.
Smart & Biggar
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