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filingDate 2003-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_804ea9be4ec4bc945c0ff92f04e3aa72
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publicationDate 2003-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber CA-2428957-A1
titleOfInvention Process for the preparation of n,n'-disubstituted 1,4-diaminoanthraquinones
abstract Process for the preparation of N,N'-disubstituted 1,4-dianinoanthraquinones in which R is an aliphatic or aromatic radical, characterized in that 1,4-dihydroxyanthraquinones are reacted with aliphatic or aromatic amines in the presence of a readily water-soluble, dipolar-aprotic solvent (e.g. NMP) and of a second solvent, different from the first.
priorityDate 2002-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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