Compositions: coating or plastic – Materials or ingredients
Patent
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.
Douglas Winston A.
E. I. Du Pont de Nemours and Company
Howard J. V.
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