Process for converting premilled crude quinacridone to pigmentar

Details Process for converting premilled crude quinacridone to pigmentar Process for converting premilled crude quinacridone to pigmentar

1980-08-28

1981-11-03

Dees, Carl F.

Compositions: coating or plastic

Materials or ingredients

106308N, 106309, C09B 4800

Patent

active

042983983

ABSTRACT:
Process for converting premilled quinacridone to pigmentary form by contacting the premilled quinacridone with aqueous alkaline medium in the presence of a quaternary ammonium compound.

REFERENCES:
patent: 2857400 (1958-10-01), Cooper
patent: 3017414 (1962-01-01), Minnich
patent: 3287147 (1966-11-01), Wilkinson
patent: 3754958 (1973-08-01), Giardbalvo
patent: 4094699 (1978-06-01), Fitzgerald

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