| 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/C08G64-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-205
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-40 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 |
| filingDate |
2005-04-12^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_194f88cac5cb4be301927d9a379dbc84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3523bf2555cf86e242d82d7216470795
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e4f9444ededf0124f3f79e462152329
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d3103713015da7b27e6d11514cae85b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6744575dc301c92e74a42369fabab498
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac9150cda41f8cd8997999c05e5a50de |
| publicationDate |
2007-01-25^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20070012417-A |
| titleOfInvention |
Polycarbonate Manufacturing Method |
| abstract |
The present invention describes a process for the preparation of polycarbonates by a transesterification process comprising at least the following steps:n n n (a) reacting at least one aromatic dihydroxyaryl compound with the diaryl carbonate in the melt in the presence of at least a catalystn n n (b) mixing the blowing agent and the melt obtained in step (a)n n n (c) passing the melt through the inlet to the separation vessel to degas the melt from (b).n n n The process is carried out with degassing according to step (c), the melt is divided by the inlet into a partial stream of 0.1 to 20 kg / hour, the temperature at the entry to the inlet is between 250 ° C and 340 ° C and the pressure in the separation vessel. Is characterized in that from 0.1 to 20 mbar. |
| priorityDate |
2004-04-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |