http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-462535-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/C09B29-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-20 |
| filingDate | 1935-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1937-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-462535-A |
| titleOfInvention | Manufacture of azo-dyestuffs insoluble in water |
| abstract | Azo dyes insoluble in water are made in substance, on the fibre or on a substratum by coupling the diazo-compound of a 1 : 2-substituted 3-aminoindole with an o-hydroxyaryl carboxylic acid arylide. The dyeings are fast to washing, peroxide and soaping and yield with acid printing pastes coloured and white resist effects. According to examples: (1) cotton yarn is grounded in the usual manner with 2<1> : 3<1> - hydroxynaphthoyl - 1 - amino - 3 - methyl-4-methoxybenzene and developed with diazotized 1 - methyl - 2 - phenyl - 3 - aminoindole (brown); white resist effects may be obtained on piece-goods by padding with the grounding solution on a foulard, drying, printing with pastes containing acid salts or acids, drying and treating with the diazo solution; if the pastes contain diazo compounds, coloured resist effects are obtained; (2) the above dyestuff is prepared in substance or on a substratum forming a brown lake. The following additional components are specified in a table: diazo components; 1 : 5 - dimethyl - 2 - phenyl - 3 - amino - indole, 1 - isobutyl - 2 - p - chlorphenyl - 3 - amino-4 : 6 - dimethylindole, 1 : 4 : 6 - trimethyl - 2 - p - chlorphenyl-3-aminoindole, 1-ethyl-2-phenyl-3-amino-4 : 5-benzindole, 1-methyl-2-m-xylyl-3-aminoindole; coupling components; the 2<1> : 3<1>-oxynaphthoyl derivatives of 1-amino-2 : 4-dimethoxy-5-chlorobenzene, p-anisidine, p-chloraniline, 1 - amino - 2 - methyl - 4 - chlorobenzene, 1-amino-2-methyl-4-methoxybenzene, a - and b -naphthylamine, dianisidine and o-toluidine, 2<1> : 3<1>-hydroxyanthracene carboxylic acid-o-toluidide. Specifications 218,568, [Class 2 (iii)], and 367,907 are referred to. The Provisional Specification refers also to the use of arylides of b -ketocarboxylic acids and specifies bis-(acetoacetic)-tolidide. 3-Aminoindoles of the above type are made by treating the corresponding 1 : 2-substituted indoles with nitrous acid and reducing the 3-nitrosoindoles. |
| priorityDate | 1935-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.