Aqueous dispersion of gypsum and its use as a filler and coating

Details Aqueous dispersion of gypsum and its use as a filler and coating Aqueous dispersion of gypsum and its use as a filler and coating

1989-03-30

1990-05-22

Straub, Gary P.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

106110, 106111, 106461, 106462, 423555, 423267, C04B 1100, C04B 2400, C01F 1146

Patent

active

049274635

ABSTRACT:
The present invention provides an aqueous dispersion comprising gypsum and a surface-active, anionic compound, wherein the surface-active compound is a phosphoric acid ester selected from the group consisting of (1) an acidic phosphoric acid ester of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are alkyl poly(oxyethylene), alkyl poly(oxypropylene), alkylphenoxy- alkyl or alkylphenyl polyoxyalkyl radicals, (2) a monophosphoric acid ester of a mono- or dihydroxyalkylurea or of an alkoxylated mono- or dihydroxyalkylurea, and (3) a monophosphoric acid ester of a polyalkoxylated amine, in which several hydroxyl groups can be esterified with phosphoric acid.

REFERENCES:
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patent: 3925456 (1975-12-01), Pluger et al.
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patent: 4034086 (1977-07-01), Pluger et al.
patent: 4102097 (1975-07-01), Fukuba et al.
patent: 4251436 (1981-02-01), Silberberg et al.
patent: 4260422 (1981-04-01), Thamor et al.
patent: 4267108 (1981-05-01), Blum et al.
patent: 4401473 (1983-08-01), Kleiner et al.

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