Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Juergen Gerold0
Date of Patent
January 12, 2010
0Patent Application Number
120869300
Date Filed
November 16, 2006
0Patent Primary Examiner
Patent abstract
The invention relates to an azo pigment preparation which is characterized by a content in 4,4′-diaminodicyclohexylmethane, the percentage of the trans,trans-isomer being at least 25%, based on the total amount of 4,4′-diaminodicyclohexylmethane. The azo pigment preparation according to the invention is especially suitable for producing gravure inks having improved optical density, higher luster and no ink show-through in the gravure printing of illustrations.
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