Butadiene-styrene copolymer-cement composition and method of pre

Details Butadiene-styrene copolymer-cement composition and method of pre Butadiene-styrene copolymer-cement composition and method of pre

1974-01-11

1976-02-24

Lieberman, Allan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 237A, 260 4213, 260 4226, 260 4247, C04B 735, C08K 554, C08L 908

Patent

active

RE0287229

ABSTRACT:
1. A cement mortar composition comprising a mixture of Portland cement, mineral aggregate, about 5%-25% based on the weight of said Portland cement of styrene-butadiene-1,3 copolymer having a styrene to butadiene weight ratio of about 30:70 to 70:30, water in amount not in excess of about 40% based on the weight of said Portland cement, and, based on the weight of said copolymer, (a) 2-10% of non-ionic surfactant, (b) 1-7.5% of anionic surfactant, at least 15% of which is a sodium alkyl sulfate in which the alkyl group contains 9-17 carbon atoms, and (c) [1-5% of] polyorganosiloxane fluid surfactant, in an amount equal to about 2.5% of a polyorganosiloxane emulsion containing 29% of the polyorganosiloxane the sum of (a) and (b) not exceeding about 14% by weight of said copolymer and the weight ratio of (a) to (b) being within the range of about 0.7:1 to 10:1.

REFERENCES:
patent: 2595797 (1952-05-01), Leyonmark et al.
patent: 2662064 (1953-12-01), Mead
patent: 2731433 (1956-01-01), Johnson
patent: 2769713 (1956-11-01), Wilson
patent: 2867603 (1959-01-01), Safford et al.
Zimmerman et al.: "Handbook of Material Trade Names," (1953) Industrial Research Service, Dover, N.H., pp. 178-180.

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