Surface treated alkali blue pigment

Details Surface treated alkali blue pigment Surface treated alkali blue pigment

1981-06-08

1983-02-15

Dees, Carl F.

Compositions: coating or plastic

Materials or ingredients

106308N, C09B 4800, C09C 368

Patent

active

043739628

ABSTRACT:
A soft textured high strength Alkali Blue pigment is produced by treating an aqueous dispersion of the pigment from a regular, untreated presscake with an aqueous solution of a tertiary amine acetate followed by the addition of ammonium hydroxide. Alternatively, the pigment dispersion is treated with an aqueous emulsion/dispersion of a tertiary amine. The mixture is then filtered and dried.

REFERENCES:
patent: 3635745 (1972-01-01), Rentel et al.
patent: 3925094 (1975-12-01), Papenfuss et al.
patent: 3951678 (1976-04-01), Wanser
patent: 4032357 (1977-06-01), Rees et al.
patent: 4045424 (1977-08-01), Tartter
patent: 4189328 (1980-02-01), Flores

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