http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1001494-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dc2f7134efa50484bb359fda73782848 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B29-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B45-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-00 |
| filingDate | 1963-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1965-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1001494-A |
| titleOfInvention | Water-insoluble metal salts of acid azo dyes and process for their manufacture |
| abstract | The invention comprises pigment dyes of formula <FORM:1001494/C4-C5/1> wherein A is the residue of a coupling component, R is a hydrogen or chlorine atom, M is a bivalent metal and n is 1 or 2. The dyes are prepared by coupling a diazotized trifluoromethyl-aniline-sulphonic acid (see Division C2) with a coupling component of the benzene, naphthalene or keto-enol series, preferably a 2-hydroxy-3-naphthoic acid or acetoacetic acid arylamide and treating the monoazo dye obtained with an alkaline earth metal or heavy metal compound. The laking is preferably carried out in aqueous solution or suspension at elevated temperature using salts of calcium, barium or strontium. Other compounds which may be used are salts of manganese, zinc, cadmium, iron, lead, cobalt, nickel and copper. The laking may be carried out in the presence of substrata, such as alumina, titanium dioxide, barium sulphate or lead sulphate. The pigments may be used to colour synthetic resins in the mass, in the spin dyeing of rayon, viscose, cellulose ethers and esters and polyesters and to colour rubber and lacquers. The preparation of the lakes is described in examples.ALSO:2 - Amino - 4 - trifluromethyl - benzenesulphonic acid is prepared by heating 2-nitro-4-trifluoromethyl-chlorobenzen with sodium sulphite in aqueous ethanol under pressure to give 2 - nitro - 4 - trifluoromethyl - benzenesulphonic acid and reducing this by the Bechamp process or by catalytic hydrogenation. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4304711-A |
| priorityDate | 1962-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.