http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-247187-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/D06P3-3226 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P3-32 |
| filingDate | 1926-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1927-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-247187-A |
| titleOfInvention | Process of dyeing leather with acid azo-dyestuffs |
| abstract | 247,187. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). Feb. 3, 1925, [Convention date]. Polyazo dyes.-Azo dyes of the type amine # resorcinol <- aminonaphthol or naphthylamine sulphonic acid <- amine are used for dyeing leather in even deep brown shades. The amines may be any diazotizable aromatic amine, aminooxy-, or amino-azo compound, or their sulphonic or carboxylic .acids, such as aniline, p-nitraniline, amino-azobenzene. 2-chlor-6-toluidine-4-sulphonic acid, p-nitro-o-aminophenol, picramic acid, etc.; the resorcinol may be replaced by its substitution products (except sulphonic acids) such as chlorresorcinol or 1 : 3 : 4-resorcylic acid; as rediazotizable middle components are specified 1:8- aminonaphthol-3: 6- or 4: 6-disulphonic acid, 1 : 8-aminonaphthol-4-sulphonic acid, and 1-naphthylamine-6 (7)-sulphonic acid (technical mixture). In an example the dyestuff p-nitraniline # resorcinol <- H-acid # pieramic acid is used. The following dyestuffs are also specified: -2-toluidine-5-sulpho acid or sulphanilic acid or naphthionic acid # H-acid ->- resorcinol # p-nitraniline, sulphanilic acid # Cleve's acid (mixture) # resorcinol <- 4-nitro-2-aminophenol, 4-nitro-2-aminophenol # Cleve's acid # resorcinol # naphthionic acid, and picramic acid # Cleve's acid # resorcinol # picramic acid. 2-Chlor-6-toluidine-4-sulphonic acid is made by sulphonating 2-chlor-6-nitro-toluene and reducing the 2-chlor-6-nitrotoluene-4-sulpbonic acid thus obtained. |
| priorityDate | 1925-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.