http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-441548-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/C09B7-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B7-00 |
| filingDate | 1934-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1936-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-441548-A |
| titleOfInvention | The manufacture of unsymmetrical vat dyestuffs of the thioindigo series |
| abstract | Unsymmetrical thioindigo dyestuffs are obtained by condensing 4-alkyl-5-halogen-7-alkoxy-3-hydroxythionaphthenes or 2 - derivatives thereof with 3-hydroxythionaphthenes or isatins of the benzene series or 2-derivatives thereof, the two components being at different stages of oxidation. The dyestuff may be subjected to halogenation. In examples: (1) 4-methyl-5-chlor-7-methoxy-3-hydroxythionaphthene is condensed with 4-methyl-5 : 7-dichlor - 2 : 3 - diketodihydrothionaphthene - 2 - (p-dimethylamino) anil; the dyestuff, which dyes cotton violet shades may also be obtained from 4-methyl-5 : 7-dichlor-3-hydroxythionaphthene and a 2-derivative of 4-methyl-5-chlor-7-methoxy-2 : 3-diketodihydrothionaphthene; (2) 5 - bromisatinchloride is condensed with 4-methyl - 5 - chlor - 7 - methoxy (or ethoxy)-3-hydroxythionaphthene. 4-Methyl-5-chlor-7-methoxy-3-hydroxythionaphthene or a 2-derivative thereof may be condensed with 5-chlor-7-methyl-, 4-methyl-6-chlor- or 4 : 7-dimethyl - 5 - chlor - 3 - hydroxythionaphthene, 5 - bromisatin - a - chloride, 5 : 7 - dibrom (or dichlor) isatin-a -chloride or 4-methyl-5-chlor-7-methoxyisatin - a - chloride. The Provisional Specification comprises the use as components of 7 - alkoxy - 3 - hydroxythionaphthenes containing halogen or alkyl or both in the 4- or 4- and 5-positions. Specifications 24569/10 and 281,290, [both in Class 2 (iii)], are referred to. |
| priorityDate | 1934-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.