http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02212518-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationCPCInventive | 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/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate | 1989-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e78a3faa72a255d232a08b75bca0bfe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecbd56f7d05e62ff1b24ec1ed4a7f054 |
| publicationDate | 1990-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02212518-A |
| titleOfInvention | Production of polycarbonate |
| abstract | PURPOSE: To obtain a high-MW chloride ion-free polycarbonate without using toxic phosgene by polycondensing a bisphenol with a specified carbonate by melting in the presence of an electron-donating amine compound catalyst. n CONSTITUTION: A bisphenol is polycondensed with bis(2,4,6trichlorophenyl) carbonate, bis(2,4-dichlorophenyl) carbonate or bis(2-cyanophenyl) carbonate by melting in the presence of a catalyst selected from electron-donating amine compounds to obtain the purpose polycarbonate. Examples of the bisphenol used include compounds of formulas I-IV (wherein R 1 , R 2 , R 3 and R 4 are each H, a 1-8C linear or branched alkyl or a phenyl; X is a halogen atom; and n is 0-4). The temperature of the polycondensation reaction is desirably 130-250°C. When this temperature is below 130°C, the reaction rate is low, and when it is above 250°C, side reactions are apt to occur. n COPYRIGHT: (C)1990,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9315129-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03149221-A |
| priorityDate | 1989-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.