Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Wolfgang Hoyer0
Leonhard Unverdorben0
Date of Patent
February 22, 2011
0Patent Application Number
125317970
Date Filed
February 28, 2008
0Patent Primary Examiner
Patent abstract
The invention accordingly relates to a method for preparing transparent C.I. Pigment Violet 23 by salt kneading a Pigment Violet 23-crude in the presence of a crystalline salt and an organic liquid. Said method is characterized in that the organic liquid is propylene carbonate.
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