http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1483238-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-267 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-267 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 |
| filingDate | 2003-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_437b3a36e2320cd1d59bd1fa23c46a70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e919bc6f0753fd94bdcadb2d205a4d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac35a468f3a40f6346053e60dac624cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_887de63f6f3eac90ac5299791115d178 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d31a23160581ae1185bc2c6c5d29ead4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56dbaf45400e4688805e38d614844ac5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c7908a604a64c739bceb7e5e926ff60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f9fd4448e43f1431e3337e5e2c5b986 |
| publicationDate | 2007-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1483238-B1 |
| titleOfInvention | Method for the simultaneous production of tetrahydrofurans and pyrrolidones |
| abstract | A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C<SUB>4</SUB>-dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones comprises a) hydrogenating C<SUB>4</SUB>-dicarboxylic acids and/or derivatives thereof in the gas phase at from 200 to 300° C., from 0.1 to 100 bar, catalyst hourly space velocities of from 0.01 to 1 kg of reactant/l of catalyst*hour and reactant/hydrogen molar ratios of from 20 to 800 in the presence of catalysts comprising copper, aluminum and/or zinc to give mixtures of THF and GBL, b) separating the hydrogenation effluent obtained by distillation into a THF/water mixture as the top product and a GBL-containing bottom product, c) separating the THF/water mixture from step b) in a distillation facility consisting of three columns by withdrawing water from the bottom of the first column, recycling water-containing THF from the second into the first column, passing a side stream of the first into the second column, recycling the bottom product of the third column into the first column and withdrawing a distillate at the top of the first column, wherein a side stream of the second column is passed into the third column and the pure THF is obtained as the top product of the third column, d) recovering GBL from the GBL-containing bottom product from step b) by distillation and e) reacting the GBL obtained with ammonia or amines to give corresponding pyrrolidones. |
| priorityDate | 2002-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.