| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b09f893b262cefd50c5e76c4b85d1c0a |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B41-08 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-79 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A23L33-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-55 |
| filingDate |
1998-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_11b67505ed66ab0d22c8146158b74802
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ec226b3589453a320f13a85b5872ea5 |
| publicationDate |
1999-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0919548-A1 |
| titleOfInvention |
Process for the preparation of nicotinic acid |
| abstract |
Spray drying is used to obtain nicotinic acid from aqueous solutions of ammonium nicotinate. If necessary, this can be freed of residual ammonium nicotinate by a thermal aftertreatment in a fluid bed or under reduced pressure. The process is particularly suitable for working up the reaction mixture obtained in the oxidation of 3-methylpyridine with atmospheric oxygen, it being possible for the ammonia and, if appropriate, the water to be recycled. Nicotinic acid ("Vitamin PP") is an important additive to food and feed. |
| priorityDate |
1997-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |