http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-400870-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/C09B51-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B51-00 |
| filingDate | 1933-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1933-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-400870-A |
| titleOfInvention | Manufacture of dyestuffs |
| abstract | p-Aminodiphenylamine or its homologues or substitution products are condensed with 2-alkoxy-3 : 5-dinitro- or 4-alkoxy-3 : 5- dinitrobenzoic acids or alkyl esters to give dyes which yield yellow-brown to red-brown fast shades on animal fibres. Condensation may be conducted in a suitable solvent or diluent with or without the addition of an acid-binding agent such as sodium acetate, sodium carbonate, calcium carbonate, magnesium oxide. In examples: (1) 4-aminodiphenylamine-2-sulphonic acid is condensed with 4- and 2-methoxy-3 : 5-dinitrobenzoic acids (prepared by nitrating p- and o-methoxybenzoic acids); (2) 4-amino-diphenylamine is condensed with the methyl or ethyl ester of 4-methoxy-3 : 5-dinitrobenzoic acid. The use of the following derivatives of 4-aminodiphenylamine is also specified: 2 - sulpho - 4<1> - methyl, 2 - sulpho - 2<1> - carboxy, 2-carboxy, 2-sulpho-4<1>-methoxy-, 2-sulpho-2<1>-methoxy, 2-sulpho-4<1>-hydroxy-, and 4<1>-sulpho. Specification 279,133, [Class 2 (iii), Dyes &c.], is referred to. |
| priorityDate | 1932-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.