Cement additives comprising a polymer latex containing a styrene

Details Cement additives comprising a polymer latex containing a styrene Cement additives comprising a polymer latex containing a styrene

1977-12-27

1978-11-14

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 297UA, 260 297W, C08L 910

Patent

active

041255046

ABSTRACT:
This invention is directed to cement additives comprising (1) a polymer latex containing up to about 60 parts by weight of latex polymer solids consisting essentially of (A) the polymerized product of (a) a monomer selected from the group consisting of styrene, vinyl toluene and tertiary butyl styrene, (b) an alkyl acrylate or alkyl methacrylate having from 8 to 12 carbon atoms in the alkyl group and (c) arcylamide or methacrylamide, and (B) a butadiene rubber, (2) a nonionic surfactant and (3) a polyorganosiloxane foam depressant; and to portland cement compositions containing these additives, such cement compositions being characterized by having excellent strength and adhesion to cementitious substrates.

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