Preparation of quinacridone pigments
First Claim
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1. THE PROCESS OF PREPARING A LINEAR QUINACRIDONE IN THE FORM OF A FINELY-DIVIDED PIGMENT WHICH COMPRISES PRECIPITATING A LINEAR QUINACRIDONE FROM A POLYPHOSPHORIC ACID BY DILUTING WITH A WATER-MISCIBLE ORGANIC LIQUID.
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1 Claim
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1. THE PROCESS OF PREPARING A LINEAR QUINACRIDONE IN THE FORM OF A FINELY-DIVIDED PIGMENT WHICH COMPRISES PRECIPITATING A LINEAR QUINACRIDONE FROM A POLYPHOSPHORIC ACID BY DILUTING WITH A WATER-MISCIBLE ORGANIC LIQUID.
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Current AssigneeMobay Chemical Corporation
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Original AssigneeHerman Gerson, John F. Santimauro, Vincent C. Vesce
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InventorsGerson, Herman, Santimauro, John F., Vesce, Vincent C.
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Application NumberUS04/141,951Time in Patent Office1,723 DaysField of SearchUS Class Current546/49CPC Class CodesC09B 48/00 Quinacridones
