http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-245765-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/C09B29-366 |
| filingDate | 1926-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1926-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-245765-A |
| titleOfInvention | The manufacture of new azo-dyestuffs |
| abstract | 245,765. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbenfabriken vorm. F. Bayer & Co.). Jan. 8, 1925, [Convention date]. Azo dyes are obtained by coupling diazo compounds with the methyl pyrazolones or pyrazolone carboxylic acids obtainable from aminodiarylsulphones and their derivatives such as sulphonic acids, carboxylic acids, or oxycarboxylic acids. They dye wool in yellow shades fast to light, fulling and perspiration and are also applicable for the production of lakes and size colours; the dyestuffs derived from such of the pyrazolones as contain the o-oxycarboxylic acid grouping are useful as chrome dyestuffs for wool yielding yellow and red shades. The following components are specified :-as diazo components, o-toluidine, o- or p-sulphanilic acid, 4-chlor-2-nitraniline, 4-chlor-2-aminophenol, 4-methyl-2-aminodiphenylsulphone and its 4-sulphonic acid; as coupling components the methyl-pyrazolones and the pyrazolone carboxylic acids obtainable from 4<1>-methyl-2-aminodiphenylsulphone and its 4-sulphonic acid, 4<1>-methyl-4-aminodiphenylsulphone- 2-sulphonic acid, and 4<1>-oxy-3<1>-carboxy-2-aminodiphenylsulphone-4-sulphonic acid. Pyrazolones.-Pyrazolones are obtained by condensing the hydrazines from aminodiarylsulphones with acetoacetic or oxaloacetic ester; pyrazolones from 4<1>-methyl-2-aminadiphenylsulphone and its 4-sulphonic acid (made by condensing p-toluenesulphinic acid with 2-nitro-1-chlorbenzene or its 4-sulphonic acid and reducing), 4<1>- methyl-4-aminodiphenylsulphone-2-sulphonic acid (made by condensing p-toluenesulphinic acid with 4-nitro-1-chlorbenzene-2-sulphonic acia and reducing), and 4<1>-oxv-3<1>-carboxy-2-aminodiphenylsulphone-4-sulphonic acid (made by condensing salicylsulphinic acid with 2-nitro-1-chlorbenzene-4-sulphonic acid and reducing) are specified. |
| priorityDate | 1925-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.