http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009054676-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e443fcd44793752f156437bbfd4c8603 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B63-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96 |
| filingDate | 2006-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_690e02e943c5b090ca421d310d58ac55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8d7f2ee3c2146b7930c620740717c4d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69d2f0f4c83c44fb9e6a9e971338777f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e34d59af5a47dc7c52fc035bb7cf7516 |
| publicationDate | 2009-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2009054676-A1 |
| titleOfInvention | Industrial process for separating out dialkyl carbonate |
| abstract | It is an object of the present invention to provide a specific apparatus and process for using a single distillation column on a low boiling point reaction mixture containing a large amount of a dialkyl carbonate and an aliphatic monohydric alcohol produced through a reactive distillation process of taking a cyclic carbonate and the aliphatic monohydric alcohol as starting materials, continuously feeding the starting materials into a continuous multi-stage distillation column in which a homogeneous catalyst is present, and carrying out reaction and distillation simultaneously in the column, so as to separate the low boiling point reaction mixture by distillation into a column top component B T having the aliphatic monohydric alcohol as a main component thereof and a column bottom component B B having the dialkyl carbonate as a main component thereof stably for a prolonged period of time industrially. Moreover, it is an object to provide such a specific apparatus and process that are inexpensive and enable the dialkyl carbonate to be separated out by distillation in an amount of, for example, not less than 2 ton/hr stably for a prolonged period of time (e.g. not less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours). It has been discovered that by using a single continuous multi-stage distillation column having a specified structure, from out of a dialkyl carbonate and a diol produced through a reactive distillation system from a cyclic carbonate and an aliphatic monohydric alcohol, a high-purity dialkyl carbonate of purity not less than 97%, preferably not less than 99%, more preferably not less than 99.9%, can be separated out by distillation on an industrial scale of not less than 2 ton/hr, preferably not less than 3 ton/hr, more preferably not less than 4 ton/hr, with a high yield stably for a prolonged period of time of not less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009253939-A1 |
| priorityDate | 2005-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 179.