Process for preparing pigmentary quinacridone using low-salt mil

Details Process for preparing pigmentary quinacridone using low-salt mil Process for preparing pigmentary quinacridone using low-salt mil

1977-04-15

1978-05-09

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

106309, C08J 300

Patent

active

040885062

ABSTRACT:
Process for converting crude quinacridone to pigmentary form by milling crude quinacridone in the presence of from 5% to 50% by weight of aluminum sulfate, based on the weight of the crude quinacridone. The resulting quinacridone exhibits high masstone transparency in coating compositions.

REFERENCES:
patent: 3030370 (1962-04-01), Jackson
patent: 3980488 (1976-09-01), Barrington et al.

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