Process for improving the pigment properties of substituted linear quinacridones

• US 3,256,285 A
• Filed: 05/29/1962
• Issued: 06/14/1966
• Est. Priority Date: 06/13/1961
• Status: Expired due to Term

• Current Assignee: Aloys Kirsch, Otto Fuchs
• Original Assignee: Aloys Kirsch, Otto Fuchs
• Inventors: Fuchs, Otto, ALOYS KIRSCH
• Application Number:
  US04/198,479
• Time in Patent Office: 1,477 Days
• US Class Current: 546/28
• CPC Class Codes: C09B 48/00 Quinacridones
• CPC Class Codes: C09B 67/00 Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
• CPC Class Codes: C09B 67/0014 Influencing the physical properties by treatment with a liquid, e.g. solvents

Claims

1. A PROCESS FOR IMPROVING THE PIGMENT PROPERTIES OF LINEAR QUINACRIDONES HAVING THE FORMULA