http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-157516-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-16 |
| filingDate | 1988-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1992-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-157516-B1 |
| titleOfInvention | Method of obtaining a chrome complex 1:2 azo dyes |
| abstract | 1. The method of obtaining the azo chromocomplex dye 1: 2 of formula 1, in which M and M ^ 1 are the same or different and represent a hydrogen atom or a colorless cation, consisting in the preparation of 1-amino-2-hydroxy acid from diazotized -6-nitronaphthalenesulfonic-4 and 2-naphthol monoazo dye of formula 2, followed by conversion of the obtained monoazo dye of formula 2, after possible isolation from the reaction mixture, into a 1: 1 chromium complex by treatment with a chromium salt of a trivalent chromium sulphate and / or basic chromium sulphate in an acidic environment, under pressure, at a temperature above 100 ° C, and then subjecting the obtained chromium complex 1: 1 monoazo dye of formula 2 with a monoazo dye of formula 3, prepared by conjugating a diazot 4-nitro-2-aminophenol with 1-phenyl-3-methylpyrazolone-5, whereby 1: 2 asymmetric chromo complex dye formation reactions are carried out at elevated temperature, pH above 4 , characterized in that the monoazo dye of formula II formed by the reaction of 1-amino-2-hydroxy-6-nitronaphthalenesulfonic acid with 2-naphthol is converted into a chromium complex 1: 1 by treatment with sulfate and / or basic chromium sulphate, used in an amount corresponding to 0.9-1.1 grams of Cr, especially 1.00-1.05 grams of Cr, per 1.0 mole of monoazium dye of formula 2, at a temperature of 110-130 ° C , at pH = 1.0-3.5, especially at pH = 1.5-3.0 and in the volume of the reaction mixture in the range of 3.0-5.5 dm3 per 1.0 ---- formula 3 formula 2 formula 1 PL PL PL |
| priorityDate | 1988-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 137.