http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5329181-B2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-092 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B7-2533 |
| filingDate | 2008-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2013-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-5329181-B2 |
| titleOfInvention | Process for producing polycarbonate by melt transesterification |
| abstract | Preparing polycarbonate by the melt transesterification involves, reacting a dihydroxyaryl compound with a diarylcarbonate in the presence of catalyst in a multistage process; where at least one inhibitor is added to the melt before the last reaction stage and at least one aliphatic hydroxydicarboxylic acid(s) and/or hydroxypolycarboxylic acid(s) or its derivative(s) are added in or after the last reaction stage. An independent claim is included for an optical disc having mean electric field strength of -20 to +20 kV/m and a field strength variation of less than 15 kV/m and comprising the polycarbonate containing at least one aliphatic hydroxydicarboxylic acid and/or hydroxypolycarboxylic acid or its derivative (5-500 parts per million (ppm)), and a phenolic terminal OH groups content of greater than 150 ppm. |
| priorityDate | 2007-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID226423180 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID222266 |
Total number of triples: 15.