Cement admixture

Details Cement admixture Cement admixture

1991-07-30

1993-10-26

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Additive materials for inorganic cements which contain a...

106724, 106725, 106727, 106728, 106802, 106808, 106809, 106810, 106819, 106822, 568448, 568454, C04B 2402, C04B 2412

Patent

active

052561992

ABSTRACT:
Cement and aggregates are mixed with each other by the use of a dispersant to the effect of water reduction and prevention of slump loss, the dispersant comprising (1) (I), (IIa), and an amine reaction terminator of (IIb), (IIc), (IVg) and/or (IVh); (2) (I), (IIb) and/or (IIc) and (IIIe) and/or (IIIf); or (3) (I), (IIa) and (IIIe) and/or (IIIf), in which formulae, R is hydrogen or an alkyl having 1 to 6 carbon atoms; X is an alkali metal; X.sub.1 is hydrogen, an alkyl having 1 to 6 carbon atoms, carboxylic acid group, an alkali metal salt carboxylate, sulfonic acid group, an alkali metal salt sulfonate, hydroxy or methoxy; Y.sub.1 is carboxylic acid or an alkali metal salt carboxylate, sulfonic acid or an alkali metal salt sulfonate; Y is hydrogen or an alkali metal; Z is hydrogen, an alkyl having 1 to 6 carbon atoms or --CH.sub.2 SO.sub.3 M; and M is hydrogen or an alkali metal. ##STR1##

REFERENCES:
patent: 4272430 (1981-06-01), Pieh et al.
patent: 4430469 (1984-02-01), Burge et al.
patent: 4454311 (1984-06-01), Burge et al.
patent: 4501839 (1985-02-01), Burge et al.
patent: 4759802 (1988-07-01), Ochi et al.
patent: 4936918 (1990-01-01), Furuhashi et al.
Chemical Abstracts, vol. 90, No. 18, Apr. 1979, Abstract No. 141454w.
Chemical Abstracts, vol. 95, No. 20, Nov. 1981, Abstract No. 17437.

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