http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-413772-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/C09B45-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-16 |
| filingDate | 1933-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1934-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-413772-A |
| titleOfInvention | Improvements in the manufacture and production of azo dyestuffs |
| abstract | Animal fibres are dyed by the single-bath chroming process with azo dyes obtained by diazotizing amines of the formula <FORM:0413772/IV/1> in which x = halogen or a nitro group and y = halogen, nitro or alkyl and coupling with a 1 - (sulphophenyl) - 3 - methyl - 5 - pyrazolone. A table indicating the shades obtained using dyestuffs from the following components is given: 5-nitro-3-amino-2-hydroxy-1-methylbenzene, 4 : 6-dichlor-2-aminophenol, 4-nitro-6 - chlor - 2 - aminophenol, 4 : 6 - dinitro - 2 - aminophenol, 4-chlor-6-nitro-2-aminophenol; 1- (2-<1> 3<1>- or 4<1>- sulphophenyl)-3-methyl-5-pyrazolone. According to the first Provisional Specification the azo dyes obtained by coupling a non-sulphonated diazotized o-aminophenol or derivatives thereof with 1-(3<1>-sulphophenyl)-3-methyl-5-pyrazolone are suitable for dyeing wool to be after-treated with metal compounds and that those containing negative substituents are suitable for dyeing by the single-bath process in the presence of heavy metal compounds. Details of the preparation of the dyestuffs 5-nitro-3-amino-2-cresol or 4 : 6 - dichlor - 2 - aminophenol --> 1 - (3<1> - sulphophenyl) - 3 - methyl - 5 - pyrazolone are given. Dyeings with these dyestuffs may be after-chromed or the wool dyed in presence of bichromate. |
| priorityDate | 1933-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.