http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1234845-A3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-08 |
| filingDate | 2002-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76e10f47549353a6c594e6a4e7a3d2ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bbdeab06f7d7aed9496e840a0f4da043 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b75c88789e0e5ab39a9d5557bade5add http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1dc4ef3c82f5d8311ba2b04e6e219b6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ada469470102e2c06190bd2819605e66 |
| publicationDate | 2004-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1234845-A3 |
| titleOfInvention | Process for producing diphenyl carbonate and process for producing aromatic polycarbonates |
| abstract | The present invention relates to a process for producing diphenyl carbonatenwhich comprises a step of preparing crude diphenyl carbonate by reacting phosgenenand phenol, and a purifying step by continuous distillation of the crude diphenylncarbonate containing water and impurities, which continuous distillation comprisesnfirst-stage distillation for removing water and impurities having a lower boiling pointnthan diphenyl carbonate, and second-stage distillation for recovering purifiedndiphenyl carbonate, n said first-stage distillation being carried out by supplying a basic substancenand brining it into countercurrent contact with said low-boiling point impurities. |
| priorityDate | 2001-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.