http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2459493-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-065 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-06 |
| filingDate | 2010-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4878182f06cd7efe97a91fcdc783aed http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6aa9d08eef0db4f964da7753851448a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6cab6319105953e9f84380aad35d6f5e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e216840ab594ac4adde5b9a938d450f |
| publicationDate | 2014-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2459493-T3 |
| titleOfInvention | Procedure for preparing alkanediol and dialkyl carbonate |
| abstract | Process for the preparation of an alkanediol and a dialkyl carbonate, comprising: (a) Reacting an alkylene carbonate and an alkanol in the presence of a transesterification catalyst to obtain a reaction mixture comprising a dialkyl carbonate, the alkanol unconverted, an alkanediol, the unconverted alkylene carbonate and an alkoxy-alkanol type impurity; (b) Subject the reaction mixture to distillation in a first distillation column to obtain a head stream comprising dialkyl carbonate, alkanol and alkoxy alkanol type impurity, and a tail stream comprising alkanediol and alkylene carbonate; (c) Distilling the tail stream of the first distillation column in a second distillation column to obtain a head stream comprising alkanediol and a tail stream comprising alkylene carbonate; (d) Subject the head stream of the first distillation column to distillation in a third distillation column in the presence of a catalyst to effect the reaction of the alkoxy-alkanol type impurity with the dialkyl carbonate to give an impurity ether carbonate type , to obtain a head current comprising the alkanol and a tail current comprising the dialkyl carbonate and the impurity ether carbonate type; and (e) Subjecting the tail stream of the third distillation column to distillation in a fourth distillation column to obtain a head stream comprising dialkyl carbonate and a tail stream comprising dialkyl carbonate and the type impurity carbonate ether; and (f) Recycle the tail current from the fourth distillation column to the first distillation column. |
| priorityDate | 2009-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.