Additive for inorganic binders

Details Additive for inorganic binders Additive for inorganic binders

1979-06-08

1981-06-09

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

528256, C08L 6120

Patent

active

042724309

ABSTRACT:
Additive for inorganic binders, such as cements, calcium sulfate, magnesia cement and the like, which comprises, as the active ingredient, a water-soluble salt of a mixed resin consisting of an aromatic aminosulfonic acid, urea, melamine and formaldehyde, the molar ratio, in the resin, of aromatic aminosulfonic acid to the total amount of melamine and urea being (0.2 to 1.0):1.0 and the molar ratio of melamine to urea being from 0.75:0.25 to 0.30:0.70, and also building materials, having increased flowability and early strength, in which this additive is present.

REFERENCES:
patent: 2141569 (1938-12-01), Tucker et al.
patent: 2169980 (1939-08-01), Scripture et al.
patent: 2407599 (1946-09-01), Auten et al.
patent: 2445569 (1948-07-01), Fox
patent: 2809954 (1957-10-01), Kazenas
patent: 3985696 (1976-10-01), Aignesberger et al.

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