http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5936119-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ddadb999be4f451dfc44d8e359d8f6a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-04 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-60 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-04 |
| filingDate | 1998-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b675cbbd9bf79f0456529d24e78714f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97e99097887d4623c0c9f94195262580 |
| publicationDate | 1999-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5936119-A |
| titleOfInvention | Chemical process |
| abstract | The invention provides a process for the preparation of 3-(N,N-dimethylamino)benzoic acid which comprises subjecting an aqueous solution of an alkali metal salt or ammonium salt of 3-aminobenzoic acid to reductive methylation in the presence of a supported transition metal catalyst, by the controlled and continuous addition of a solution of formaldehyde over a period of 0.5 to 20 hours with a hydrogen pressure between 1 bar and 40 bar and with the temperature of the reaction mass gradually raised during the reduction, the reaction being carried out within the temperature range of 20° C. to 120° C., and wherein a buffering agent is added such that the pH of the reaction mass after reductive methylation is from 6.5 to 9.5. |
| priorityDate | 1997-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.