http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19938622-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ecde08b86ab7c9b49cd8213226e8306b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3813 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 |
| filingDate | 1999-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dbaf20ab8df2c9979d4fb46869779c0e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fcd7a822c4ec388792182015335a320c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23910b2c8632777c2d4dce5a5ddc2bd9 |
| publicationDate | 2002-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-19938622-C2 |
| titleOfInvention | Process for the preparation of N- (phosphonomethyl) glycine |
| abstract | A process for the preparation of N- (phosphonomethyl) glycine is described DOLLAR A a) by oxidation of N- (phosphonomethyl) iminodiacetic acid (PMIDA) with hydrogen peroxide in an aqueous medium in the presence of a heterogeneous catalyst in an amount of 5 to 50% by weight. %, based on the amount of PMIDA used, in the temperature range from 50 to 100 ° C., the molar ratio of PMIDA to hydrogen peroxide being 1: 1.5 to 1: 5 and the concentration of PMIDA used in the aqueous suspension being 1 to 30 % By weight is set, DOLLAR A b) subsequent separation of the solid catalyst from the aqueous reaction suspension from stage a), DOLLAR A c) concentration of the reaction solution from stage b) by evaporation at temperatures from 20 to 90 ° C. and a vacuum of 20 to 700 mbar up to a water content of 10 to 70% by weight and DOLLAR A d) separation of the N- (phosphonomethyl) glycine from the concentrated reaction solution from stage c), in particular by filtration, which is characterized in that activated carbon with a particle size distribution of 98% 150 mum and 40% 10 mum is used as catalyst. DOLLAR A The activated carbon catalysts used in the process according to the invention combine high product selectivity with high constant activity and enable an increase in the yield with constant product purity. |
| priorityDate | 1999-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.