Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akihiro Ogata0
Nagatoshi Kobayashi0
Date of Patent
July 19, 2011
Patent Application Number
12303882
Date Filed
October 16, 2007
Patent Primary Examiner
Patent abstract
The present invention provides a method for producing dry organic pigment, comprising the successive steps of, in this order: a first step wherein a wet organic pigment is obtained by drying an organic pigment presscake at 70 to 150° C. to a moisture content of 5 to 30%, and a second step wherein a dry organic pigment is obtained by pulverizing and drying the wet organic pigment at a temperature that is higher than the temperature employed in the first step but lower than the decomposition temperature of the organic pigment. The method for producing dry organic pigment enables the dry organic pigment to be obtained with superior productivity while consuming less energy than conventional methods.
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