http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-156708-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 | 1992-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-156708-B1 |
| titleOfInvention | The method of obtaining azo chromocomplex dye 1: 2 PL |
| 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 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 post-reaction mixture, into a 1: 1 protection complex by the action of trivalent chromium salts of such as sulfate and / or basic chromium sulfate in an acidic environment under pressure at a temperature above 100 ° C. and then reacting the obtained 1: 1 chromium complex of the monoazo dye of formula 2 with the monoazo dye of formula 3, prepared by coupling the diazotized 5-nitro-2-aminophenol with 2-naphthol, whereby the asymmetric chromocomplex dye 1: 2 is formed by at an elevated temperature at a pH greater than 4, characterized in that the mononase dye of formula 2 produced by the reaction of 1-ammo-2-hydroxy-6-nitronaphthalenesulfonic acid with 2-naphthol is transformed into a chromium complex 1: 1 by the action of chromium sulphate and / or basic sulphate, used in an amount corresponding to 0.9-1.1 grams of Cr, in particular 1.00-1.05 grams of Cr per 1.0 mole of monoazo dye of formula 2, in temperature 110-130 ° C, with p H = 1.0-3.5, especially with p H = 1.5-3.0 in the volume of the reaction mixture. pattern 2 pattern 3 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: 65.