Fluid pigment suspensions with phosphonocarboxylic acids

Details Fluid pigment suspensions with phosphonocarboxylic acids Fluid pigment suspensions with phosphonocarboxylic acids

1978-05-30

1980-01-29

McCarthy, Helen M.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106296, 106302, 106304, 106306, 106308Q, 106308F, 106308N, 106309, C09C 102, C09C 124, C09C 136, C09C 108

Patent

active

041860284

ABSTRACT:
In an aqueous fluid dispersible filler or pigment suspension containing a dispersion aid, the improvement which comprises employing as the dispersion aid about 0.01 to 1% by weight, based on solids, of a phosphonocarboxylic acid or a salt thereof. The pigment may be TiO.sub.2 and be present in from 30 to 80% concentration. The dispersion aid may be phosphonobutane-1, 2,4-tricarboxylic acid or a salt, and an amine or alkanolamine may also be present.

REFERENCES:
patent: 3346487 (1967-10-01), Irani et al.
patent: 3772046 (1973-11-01), Knapp et al.
patent: 3808023 (1974-04-01), Whitehead et al.
patent: 3886205 (1975-05-01), Geffers et al.
patent: 3959168 (1976-05-01), Germscheid et al.
patent: 3964921 (1976-06-01), Persinski
patent: 4040854 (1977-08-01), Persinski

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