http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-470079-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/C09B47-0671 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B47-067 |
| filingDate | 1936-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1937-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-470079-A |
| titleOfInvention | Improvements in the manufacture and production of dyestuffs |
| abstract | Chlorinated and brominated phthalocyanines containing more than one halogen atom per molecule are obtained by heating o-dinitriles of aromatic dicarboxylic acids or compounds capable of conversion into them, viz. phthalic imides or diamides and o-cyano-benzamides, with chlorinating or brominating agents containing no metal, such as free chlorine or bromine, sulphuryl chloride or chlorsulphonic acid. Condensing agents such as the anhydrous halides of iron, chromium, copper, aluminium and the metals of the 5th group may also be present, and metals capable of entering into the dyestuff or acting as halogen transferers, such as iron chips, copper or zinc powder. Diluents such as aromatic nitro-hydrocarbons and aliphatic or aromatic halogen-hydrocarbons may be used and increased pressure is advantageous. In the examples: (1) phthalodinitrile is treated with bromine in nitrobenzene solution, and then with cuprous chloride and pyridine; (2) cuprous bromide or chloride, or cupric chloride, is added to phthalodinitrile in nitrobenzene and the mixture is heated with bromine; (3) bromine is added to a mixture of phthalodinitrile and aluminium chloride in nitrobenzene; (4) bromine in nitrobenzene is added to a mixture of phthalodinitrile, nitrobenzene and zinc chloride, oxide or acetate; (5) in the process of the previous example, 4-chloro-phthalodinitrile is used as starting material; (6) phthalodinitrile dissolved in trichlorbenzene is treated with chlorine in the presence of the double compound of carbamic acid chloride with zinc chloride or aluminium chloride; (7) phthalodinitrile, cuprous chloride and pyridine in trichlorbenzene solution are treated with chlorine; (8) chlorine under pressure is allowed to act on phthalodinitrile, copper powder, iodine and o-dichloro-benzene; (9) phthalodinitrile, zinc dust, sodium chloride and anhydrous iron chloride are treated with chlorine under pressure; (10) phthalodinitrile, aluminium chloride, sodium chloride and potassium chloride are treated with chlorine under pressure; (11) phthalodinitrile is heated with phosphorus oxychloride in presence of cuprous chloride, zinc chloride, aluminium chloride, or ferric chloride; (12) phthalodinitrile or o-cyanobenzamide is heated with sulphuryl chloride or sulphur monochloride; (13) phthalodinitrile is heated with phosphorus oxychloride; (14) phthalodinitrile and iodine in carbon tetrachloride are heated with chlorine under pressure; (15) 3 : 4-dicyandiphenyl with nitrotoluene and iodine is treated with sulphur monochloride and then with cuprous dichloride and pyridine; (16) phthalodinitrile is heated with cuprous chloride, antimony trisulphide and sulphuryl chloride. The products may be finely divided by dissolving in concentrated sulphuric acid and pouring on to ice, or by grinding with salt. Specification 410,814 and the Journal of the Chemical Society, 1934, p. 1016 et seq. are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3414583-A |
| priorityDate | 1936-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 84.