http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1095957-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate | 1998-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_664d673ef44304e1f701bf96cda6d54d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94789a1dc1577e474c066a61858219fe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32b1de7a94285f1042c229b557efd69a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_778a84fc8bb035321f9e5079286acdc3 |
| publicationDate | 2001-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1095957-A1 |
| titleOfInvention | Process for producing aromatic polycarbonate |
| abstract | Disclosed is a method for producing an aromatic polycarbonate, which comprises treating a molten aromatic polycarbonate prepolymer (obtained by reacting an aromatic dihydroxy compound with a diaryl carbonate) with an inert gas under a predetermined pressure to thereby cause the molten prepolymer to absorb the inert gas, and subjecting the resultant molten prepolymer having the inert gas absorbed therein to polymerization, under a pressure lower than the above-mentioned predetermined pressure employed for the inert gas absorption, to thereby polymerize the prepolymer to a predetermined degree of polymerization. By the method of the present invention, a high quality aromatic polycarbonate which is colorless and has excellent mechanical properties can be produced at high polymerization rate even without using a large amount of an inert gas. Further, even if the production of an aromatic polycarbonate is conducted in a continuous manner, the molecular weight of the produced aromatic polycarbonate can be maintained at a desired level, so that the high quality polycarbonate can be stably produced for a prolonged period of time. Therefore, the method of the present invention is commercially very advantageous. <IMAGE> |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1760109-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005103115-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1491569-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1961781-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1491569-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1956036-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1760109-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1956036-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1961781-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101331168-B |
| priorityDate | 1998-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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