http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2240323-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-406 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 |
| filingDate | 2001-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_72b59bb440941232ca4e4735433f8b51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8bdd1805dec8f68a1a8ae317c4bdcadc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_276a6aa689599d9e7ca4b0bc38102717 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d8d551d03c9621056d56b5606c071c0e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12a10ef7b259f64ced00f8f326cd939c |
| publicationDate | 2005-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2240323-T3 |
| titleOfInvention | PROCEDURE FOR THE MANUFACTURE OF POLYCARBONATE. |
| abstract | Process for the manufacture of polycarbonate by melt transesterification of diaryl carbonate with dihydroxyaryl compounds, which contains a series of stages, characterized in that, in addition to the monohydroxyaryl compound, diaryl carbonate is also isolated in excess of the vapor streams , (i) incorporating the vapor stream formed at medium height to a first column, and (ii) separating the vapor stream into a head product, which contains the high purity monohydroxaryl compound, and into a boiler product, and (iii) the high purity monohydroxyaryl compound of (ii) being able to be used directly in the manufacturing process again, and (iv) by supplying the boiler product of (ii) again at medium height to a second column, and (v) by separating this first boiler product from the second column in a boiler product from the second column, which contains the high-point secondary products of e boiling, and in a head product, and (vi) again supplying the head product of (v) at mid-height to a third column, and (vii) removing the low boiling products by the head of the third column, and extracting the diaryl carbonate as a boiler product or in side stream, and (viii) by recycling the diaryl carbonate extracted directly to the transesterification process for the manufacture of polycarbonate. |
| priorityDate | 2001-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 98.