http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3140026-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-46 |
| filingDate | 1981-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03078f7fe0e07a0ac3bd95f854152d67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_856f87e538414ddfa4f3d184f5083373 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c49eb45e12c69bd6168f284f365fa1f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b172b4e51e0b4bbe332f78c53515b94 |
| publicationDate | 1983-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3140026-A1 |
| titleOfInvention | METHOD FOR PRODUCING CATALYST-FREE POLYPHENYLENE ETHER |
| abstract | The invention relates to a process for the preparation of high-molecular-weight, alkyl-substituted polyphenylene ethers from monohydric phenols by oxidative coupling reaction with oxygen in the presence of a catalyst complex comprising a metal salt and an organic amine in the presence of a solvent, where the metal-ion component of the catalyst is removed from the reaction solution by addition of a chelating agent (I) and a phosphonium salt of the formula (II): <IMAGE> in which R<1>, R<2>, R<3> and R<4> are alkyl, alkenyl, aryl and/or aralkyl groups, and X is an inorganic anion. The chelating agent (I) is a polycarboxylic acid, aminocarboxylic acid, aminopolycarboxylic acid, polyalkylenic acid, polyaminic acid, polycarboxylic acid, a polymercaptide and/or polyamine, ethylenediaminetetraacetic acid or the mono-, di-, tri- or tetrasodium salts thereof, a trimercapto- s-triazine or the mono-, di- or trisodium salts thereof, a nitrilodi- or -triacetic acid or the mono-, di- or trisodium salts thereof, glycine or the sodium salt thereof. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4705843-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0161484-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0305662-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0305662-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0103275-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0103275-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0148800-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4577010-A |
| priorityDate | 1981-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 89.