http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-471489-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/C09B25-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B25-00 |
| filingDate | 1936-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1937-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-471489-A |
| titleOfInvention | Manufacture of dyestuffs capable of being chromed and intermediate products therefor |
| abstract | Intermediate products (phthalones) are made by condensing a hydroxytrimellitic acid or a derivative thereof with a heterocyclic nitrogen compound which contains a reactive methyl or methylene group, such as, a quinaldine, a 2-methylarylimidazole, a 2-methylaryloxazole, a 2-methylarylthiazole, a 2-methyleneindoline or a derivative thereof. Dyes capable of being chromed in substance or on the fibre are made by sulphonating the intermediates. Yellow shades are obtained on animal fibres. In the examples: (1) 5-hydroxybenzene-1 : 2 : 4-tricarboxylic acid anhydride or the free acid is heated with quinaldine in presence of zinc chloride, (2) the same anhydride is melted with 2-methylbenzimidazole, (3)-(8) the anhydride is condensed as in (1) with 8-hydroxyquinaldine, 2 : 4 : 5 : 7-tetramethylquinoline, 2 : 5 : 7-trimethylquinoline, 2 : 6-dimethylquinoline, b -naphthoquinaldine and 2-methyl-3 : 4-benzoquinoline. In each example details of the sulphonation of the intermediate product are given. 3-Hydroxybenzene-1 : 2 : 4-tricarboxylic acid (obtained by brominating pseudocumene-5-sulphonic acid in sulphuric acid, splitting off the sulpho group, oxidizing the product and substituting the bromine atom by the hydroxyl group) is also specified as starting material. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101027362-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7879929-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100858863-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006038728-A1 |
| priorityDate | 1936-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.