Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yingxia He0
Colin Campbell0
Gordian Schilling0
Rhonda Carter0
Date of Patent
September 5, 2006
0Patent Application Number
109882270
Date Filed
November 12, 2004
0Patent Primary Examiner
Patent abstract
The invention is directed to a method or use of 2,9-dichloro-quinacridone as a crystal phase inhibitor during the beta-quinacridone or gamma-quinacridone crude pigment particle size reduction processes. 2,9-dichloroquinacridone is added to the milling composition of the crude gamma or crude beta quinacridone.
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