Cement additives

Details Cement additives Cement additives

1985-09-20

1987-05-05

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106314, 106315, 524 5, C04B 735

Patent

active

046629424

ABSTRACT:
A cement additive comprising at least two fluidizing agents wherein one of the fluidizing agents is a saponified product of a sulfonated styrene-maleic acid copolymer and the other is one or more of a formalin condensate of naphthalenesulfonic acid and a polyoxyethylene-based compound.
The cement additive of this invention is added to a cement composition (cement paste, mortar or concrete) and especially prevents a reduction in the fluidity with a lapse of time.

REFERENCES:
patent: 3544344 (1970-12-01), Pratt et al.
patent: 3563777 (1971-02-01), Pratt et al.
patent: 3563930 (1971-02-01), Stram et al.
patent: 3923717 (1975-12-01), Lalk et al.
patent: 4036660 (1977-07-01), Persinski et al.
patent: 4504318 (1985-03-01), Matsuda et al.
patent: 4601758 (1986-07-01), Nelson

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