http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-447814-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b04f5b6a02051c94d6eaf190b751ed2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B33-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B33-00 |
| filingDate | 1934-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1936-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-447814-A |
| titleOfInvention | Process for the manufacture of azodyestuffs |
| abstract | Azo dyes containing a heavy metal in a complex form are made by coupling a monoazo dye of the general formula <PICT:0447814/IV/1> (in which x=OH, alkoxy, halogen or COOH, y=OH, NH2 or substituted NH2, one z means the same as y and the other z=hydrogen or any substituent and in which R=a benzene or naphthalene residue and R and R<1> may contain further substituents) with a diazo compound derived from a monamine, if desired coupling the disazo dye with a further diazo compound, and transforming the dyestuff by a wet process either prior or subsequent to the final coupling either prior or subsequent to the final coupling into a heavy metal complex compound with the exception of a copper complex compound of the corresponding o-hydroxy or o-carboxy azo dye. They dye leather in fast even shades and also animal and vegetable fibres. In examples the following dyes are described: (1) 6 - chloro - 2 - aminophenol - 4 - sulphonic acid --> resorcinol \sM dehydrothiotoluidine sulphonic acid or 4<1>-nitro-4-aminodiphenylamine-2<1>-sul-phonic acid treated with chromium formate; (2) anthranilic acid --> (acid) m-aminophenol (chromed) \sM p - nitroaniline - 3 - sulphonic acid; (3) nitro-1-amino-2-naphthol-4-sulphonic acid --> resorcinol (chromed) \sM naphthionic acid; (4) 1-amino-2-naphthol-4-sulphonic acid --> resorcinol (chromed) \sM naphtionic acid coupled with diazotized p - nitroaniline; (5) 4 - nitro - 2 - aminophenol - 6 - sulphonic acid \sQ m-phenylenediamine treated with chromium sulphate. Specification 297,003, [Class 2 (iii)], is referred to. The Specification as open to inspection under Sect. 91 refers to the coupling of monoazo dyes of the above formula with a diazo compound with the exception of such compounds as after coupling, contain a free amino group or with two molecular proportions of any diazo compound and transforming the dyestuff either prior or subsequent to the final coupling into a heavy metal complex compound with the exception of a copper complex compound. This subject-matter does not appear in the Specification as accepted. |
| priorityDate | 1933-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.