http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030085491-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5442 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-02 |
| filingDate | 2003-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2003-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030085491-A |
| titleOfInvention | Process for the production of phosphonium phenolates |
| abstract | A process for the preparation of high purity tetraphenylphosphonium phenolate in liquid form at room temperature is disclosed. The process comprises (i) reacting tetraphenylphosphonium halide and phenol in an aqueous alkali solution at a temperature of 55 ° C. or lower at a molar ratio of phenol to tetraphenylphosphonium halide ≧ 10: 1 and a pH of 9.5 to 11 to form an organic phase and an aqueous phase. Obtaining a material system comprising, and (ii) after completion of the reaction, involves separating a water phase from an organic phase by adding a solution composed of water and insoluble alcohol. The phosphonium phenolate thus prepared is suitable as a transesterification catalyst, and is particularly suitable for the solvent-free preparation of thermoplastic polycarbonates. |
| priorityDate | 2002-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 94.