http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-766345-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B5-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B5-06 |
| filingDate | 1953-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1957-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-766345-A |
| titleOfInvention | Manufacture of vat dyestuffs containing halogen |
| abstract | Vat dyes are made by reacting a Bz.2-phenyl - Bz.1 - Py.11/2.21 - benzanthrone - pyrazole - anthrone in aqueous suspension with a halogen at a temperature up to about 50 DEG C. A halogenation catalyst, e.g. a tin salt, a manganese salt, or iodine may be present. The halogen may be nascent or molecular. The products dye cotton greenish-blue shades. In examples (1) Bz.2-phenyl - benzanthrone - pyrazole - anthrone is treated in water with hydrochloric acid and sodium chlorate, potassium permanganate, or potassium bichromate, and when the chlorate is used, there may also be present iodine or potassium iodide, or stannous chloride. Also in examples, Bz2 - phenyl - benzanthrone pyrazole anthrone is treated in water with (2) sodium bromate, hydrobromic acid, sulphuric acid, and manganese sulphate, (3) chlorine, hydrochloric acid, and a wetting agent, (4) bromine, hydrobromic acid, and iodine, (5) sodium hypochlorite and hydrochloric acid, with or without iodine. Also (6) Bz.2 - phenyl - benzanthrone - 8 - chloro - pyrazole - anthrone is treated with sodium chlorate and hydrochloric acid. Bz2 - phenyl - benzanthrone-8 - chloro - pyrazole - anthrone is prepared by subjecting to a caustic alkali melt the condensation product from 8 - chloro - pyrazole-anthrone and Bz.1-chloro-Bz.2-phenyl - benzanthrone. |
| priorityDate | 1952-10-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.