Production of pigments

Details Production of pigments Production of pigments

1993-03-30

1994-04-26

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106493, 106496, 106500, 106504, 106 20R, 106 23H, C09B 3512

Patent

active

053063422

ABSTRACT:
Process for the production of a flocculation-resistant pigment, comprising after-treating an arylamide pigment which has been subjected to a dyestuff treatment, the after-treatment comprising a further treatment of the dyestuff-treated arylamide pigment with an arylamide yellow dyestuff, under alkaline conditions at elevated temperature.

REFERENCES:
patent: 4469515 (1984-08-01), Pechey et al.
patent: 4885033 (1989-12-01), Blackburn et al.

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