http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6635602-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ddadb999be4f451dfc44d8e359d8f6a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3275 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-1455 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 1999-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2003-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8995cb782218f6a77526a95fd346de49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_098065703c470afe452621d85ced58d5 |
| publicationDate | 2003-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6635602-B1 |
| titleOfInvention | Preparation process for manufacture and purification of mixtures of fluoran compounds and recording material comprising said mixtures of fluoran compounds |
| abstract | A process for the manufacture of mixtures of fluoran compounds by the reaction of keto acids of formula (II) with a compound of formula (III) in the presence of a dehydrating condensation agent, wherein R1 and R2 independently represent hydrogen; an alkyl of 1-18 carbon, a secondary alkyl with respect to the carbon atom bonded to the nitrogen atom of 3-13 carbon atoms, a cycloalkyl of 4-8 carbon atoms or a phenyl, both of which may be substituted by at least one substituted selected from the group consisting of halogen atoms and alkyls having 1-4 carbon atoms, an aralkyl of 7-10 carbon atoms; or R1 and R2, together with the adjacent nitrogen atom from a heterocyclic ring; R3 is hydrogen, an alkyl of 1-4 carbon atoms, an alkoxy of 1-4 carbon atoms, a phenyl; a substituted phenyl or a halogen; R4 is an alkyl group of 1-18 carbon atoms, a carboxyalkyl of 1-18 carbon atoms, a carboxycycloalkyl of 4-8 carbon atoms, an alkylamino of 1-18 carbon atoms, a cycloalkylamino of 4-8 carbon atoms, a dialkylamino or dicycloalkylamino; an arylamino, a substituted arylamino; an aralkylamino of 7-10 carbon atoms; a diaralkylamino; R5 is an alkyl of 1-18 carbon atoms, a carboxy alkyl of 1-18 carbon atoms or a halogen and R6 is hydrogen or alkyl of 1-4 carbon atoms. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008044747-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7642218-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7521106-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009156397-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7709164-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007048487-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7498122-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005287475-A1 |
| priorityDate | 1998-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 1756.