Surface treated alkali blue pigment

Details Surface treated alkali blue pigment Surface treated alkali blue pigment

C - Chemistry, Metallurgy

09

B

6/217

C09B 48/00 (2006.01) C09B 67/18 (2006.01)

Patent

CA 1174009

SURFACE TREATED ALKALI BLUE PIGMENT Abstract of the Disclosure 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.

402336

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