http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4515971-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_535eb1a88ad1681aeaaf83380ac4b50b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B11-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3275 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-1455 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327 |
| filingDate | 1981-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1985-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c86d4bdb097c639e095f0bb5de8f0712 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d22f9eddcc65ebb022412a2b4acf5bd |
| publicationDate | 1985-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4515971-A |
| titleOfInvention | 5'/6'-Carboxyfluorans and derivatives thereof |
| abstract | Dialkylamino-substituted 2-anilino-5'/6'-carboxyfluorans, 2-amino and substituted amino-5'/6'-carboxyfluorans, 1,3-dialkyl-5'/6'-carboxyfluorans, esterified dialkylamino-substituted 2-anilino-5'/6'-carboxyfluorans, 2-amino and substituted amino-5'/6'-carboxyfluorans, 1,3-dialkyl-5'/6'-carboxyfluorans and 3,3-(corresponding-substituted-diaryl)-5/6-carboxyphthalides useful as color formers, particularly in carbonless duplicating and thermal marking systems, are prepared by the interaction of 4/5-carboxy-2-(4-dialkylamino-substituted-2-hydroxybenzoyl)benzoic acids and substituted diphenylamines to produce the phthalides which are then subjected to ring closure to produce the carboxyfluorans and by the interaction of 4/5-carboxy-2-(4-dialkylamino-substituted-2-hydroxybenzoyl)benzoic acids and substituted 4-hydroxyacetanilides or alkyl phenols which are esterified with alkyl halides or dialkyl sulfates. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5017710-A |
| priorityDate | 1980-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 200.