http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2267058-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2b384d05c6dffc4c8cee2a5fa24f749 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00 |
| filingDate | 2009-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10a02eb9a2117e139dd23ad6df8bd8be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ebda1316bb45b62d0256323a3d05e5d |
| publicationDate | 2010-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2267058-A1 |
| titleOfInvention | Novel method for producing polyphenylene ether |
| abstract | Disclosed is a method for producing a polyphenylene ether, which comprises a step of preparing a polymerization solution composed of 10-25 parts by mass of a phenolic compound (M) and 75-90 parts by mass of an aromatic solvent (A) with the total of the compound and the solvent being 100 parts by mass, and 0.1-10 parts by mass of a catalyst (C) containing a metal salt; a step of performing an oxidative polymerization of the phenolic compound (M) by passing an oxygen-containing gas through the polymerization solution; a step of stopping the polymerization by mixing an aqueous chelating agent solution into the polymerization solution; a step of subjecting a diphenoquinone compound produced as a by-product to a quinone binding process or removal by reduction; and a step of obtaining a polyphenylene ether by separating the aqueous phase through liquid-liquid separation. In the method for producing a polyphenylene ether, 0.001-0.004 part by weight of an ion catalyst (D) is added into the polymerization solution before the liquid-liquid separation. |
| priorityDate | 2008-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 259.