http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003221440-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dbdfa36b677f4ef61245ca725011e221 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-44 |
| filingDate | 2002-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_493a3a901acebe46c0851f67e46ae097 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b9b21a86fe0a8f54417712d31123b2e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af1b73bd43cf69c4c2ca3d1b7e568e23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9d152571588d3cc23eeda4091610f2b |
| publicationDate | 2003-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003221440-A |
| titleOfInvention | Solvent recovery method in polyphenylene ether production |
| abstract | PROBLEM TO BE SOLVED: To provide a method for distilling and recovering a good solvent in the production of polyphenylene ether, which suppresses foaming in a distillation column and has no problem in recovery efficiency, purity of the recovered solvent and productivity. To provide. SOLUTION: An oxygen-containing gas is passed through a polymerization solution comprising a good solvent of polyphenylene ether, a metal salt, an amine compound and a phenol compound to oxidatively polymerize the phenol compound, and then an aqueous solution of a chelating agent is mixed with the polymerization solution. Stop the polymerization, metal salt, chelating agent, and, in the polyphenylene ether solution obtained by separating water, in the polyphenylene ether production method of adding a poor solvent of polyphenylene ether to precipitate polyphenylene ether particles and filtering off, When distilling the mixture obtained by filtering the polyphenylene ether particles to recover a good solvent, one or more defoamers selected from fluorosilicone compound defoamers are used. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014508208-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10711102-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2820066-A4 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2016148039-A |
| priorityDate | 2002-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 73.