0850894-A1 is referenced by 22 patents and cites 6 patents.

The present invention provides a cement additive its production process and cement composition achieving excellent slump loss prevention capability. As a cement additive, there can be a copolymer (A-1) comprising an unsaturated polyalkylene glycol ether-based monomer (I), maleic acid-based monomer (II) and other monomer (III) copolymerizable with these monomers, the monomer (I)/monomer (II)/monomer (III) weight ratio being 50-99/50-1/0-49 and the weight average molecular weight of the copolymer (A) being 10,000 to 100,000 in terms of polyethylene glycol measured by gel permeation chromatography, or a copolymer (A) with an antifoaming agent (B), wherein the copolymer (A) comprises polyalkylene glycol ether-based units and dicarboxylic acid-based units as repeating units.

Title
Cement additive, its production process and use
Application Number
EP19970122406 19971218
Publication Number
0850894 (A1)
Application Date
December 18, 1997
Publication Date
July 1, 1998
Inventor
Nagare Koichiro
JP
Iwai Syogo
JP
Shiote Katsuhisa
JP
Yuasa Tsutomu
JP
Hirata Tsuyoshi
JP
Assignee
Nippon Catalytic Chem
JP
IPC
C08G 65/32
C08F 290/14
C08F 290/06
C04B 24/32
C04B 24/26
C08L 71/00
C08F 290/00
C08F 216/00
C04B 40/00
C04B 24/00
C08L 71/02
C08F 290/06
C08F 216/14
C04B 40/00
C04B 24/32
C04B 24/26
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