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filingDate 1999-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a87af58c5a3070140c9217ed727734e
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publicationDate 2002-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-1020497-A3
titleOfInvention Mixed crystals of quinacridone pigments in the gamma phase
abstract a) 82,5 bis 99 Gew.-% an unsubstituiertem Chinacridon der γ-Phase dernallgemeinen Formel (I),n nin welcher R 1 und R 2 Wasserstoffatome bedeuten und b) 1 bis 17,5 Gew.-% eines oder mehrerer, in 2,9- und/oder 3,10- Stellungnsubstituierter Chinacridone der allgemeinen Formel (I), worin die Substituenten R 1 nund R 2 gleich oder verschieden sind und Chlor-, Brom-, Fluoratome oder C 1 -C 4 -Alkyl-,nC 1 -C 4 -Alkoxy- oder Carbonamidgruppen, die durch C 1 -C 6 -Alkylgruppennsubstituiert sein können, und R 1 zusätzlich ein Wasserstoffatom sein kann, bedeutennsowie Pigmentzubereitungen, die diese Chinacridonmischkristallpigmente enthalten. The invention relates to new quinacridone mixed crystal pigments consisting of a) 82.5 to 99% by weight of unsubstituted quinacridone of the γ phase of the general formula (I), in which R 1 and R 2 represent hydrogen atoms and b) 1 to 17.5% by weight of one or more quinacridones of the general formula (I) which are substituted in the 2,9- and / or 3,10-position, in which the substituents R 1 and R 2 are identical or different and Chlorine, bromine, fluorine atoms or C 1 -C 4 alkyl, C 1 -C 4 alkoxy or carbonamide groups, which can be substituted by C 1 -C 6 alkyl groups and R 1 can additionally be a hydrogen atom, mean as well as pigment preparations containing these quinacridone mixed crystal pigments.
priorityDate 1999-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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