http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-225610-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_13a6915eb87851c8d00e630a0b287257 |
| filingDate | 1955-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1956-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-225610-A3 |
| titleOfInvention | PROCEDURE FOR THE MANUFACTURE OF INDOFENOL-THOSULPHONIC ACIDS OF CARBAZOL AND N-ALKYL CARBAZOL |
| abstract | Process for the manufacture of indophenol-thiosulfonic acids from carbazole or N-alkyl-carbazole, or their leuco-derivatives, characterized in that high purity carbazole (98-99%) or N-alkyl-carbazole is condensed, with p-nitrosophenol in solution with concentrated sulfuric acid (95-100%), at temperatures between -15º and -25º C. and the resulting mass is poured onto a sodium thio-sulfate solution, stirring until complete transformation into indophenol acid -thio-sulfonic and at the same time in leuco-derivative. |
| priorityDate | 1955-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.