http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002241486-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate | 2001-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_568daa82e64fb62217be128d9a5021bf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01c13dd39e441c8eadc92c8d8f1f53d0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac7caeb9728f943f2ab0d5c74fff5e4c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58f4b9cf30cfa6c0dfbf0c05b9df2f4a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_301ec8487073c500818cdb7d8fd985f0 |
| publicationDate | 2002-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2002241486-A |
| titleOfInvention | Method for producing aromatic-aliphatic copolymerized polycarbonate |
| abstract | PROBLEM TO BE SOLVED: To provide a method for stably producing an aromatic-aliphatic copolymer polycarbonate having an excellent hue, which is useful as an optical material. SOLUTION: An aromatic carbonic acid diester is melt-polymerized with at least one kind of aliphatic dihydroxy compound having an alicyclic structure and at least one kind of aromatic dihydroxy compound in the presence of an alkali metal and / or alkaline earth metal catalyst. In the preparation of the aromatic-aliphatic copolymerized polycarbonate, the operating temperature of the final polycondensation reactor is set at 250. A method for producing an aromatic-aliphatic copolymerized polycarbonate, wherein the molecular weight of the produced polymer is controlled by setting the pressure to 133 ° C. or lower and the pressure to 133 Pa or lower. |
| priorityDate | 2001-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 266.