Styrene-butadiene interpolymer latex based cement additives

Details Styrene-butadiene interpolymer latex based cement additives Styrene-butadiene interpolymer latex based cement additives

C - Chemistry, Metallurgy

08

L

400/4115

C08L 9/08 (2006.01) C04B 7/02 (2006.01) C04B 28/02 (2006.01) C08K 5/42 (2006.01) C08L 25/10 (2006.01) C08L 55/02 (2006.01)

Patent

CA 1089578

Abstract of the Disclosure This invention is a cement additive comprising (1) a styrene-butadiene interpolymer latex, (2) a non- ionic surfactant, (3) a polyelectrolyte comprising the product obtained by copolymerizing methylmethacrylate and a sulfoester of .alpha.-methylene carboxylic acid or its salt, and (4) a polyorganosiloxane foam depressant, which additives provide portland cement compositions having improved strength properties, workability and adhesion to cementitious substrates.

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