http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1118693-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b7d099672b80e9a0923b55a21007a5d9 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-44 |
| filingDate | 1966-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1118693-A |
| titleOfInvention | Process for the preparation of polyphenylene ethers |
| abstract | Poly - (2,6 - disubstituted phenylene - 1,4)-ethers are obtained by oxidizing a monophenol substituted in the two ortho positions by alkyl, aryl or alkoxy groups and having a hydrogen in the para position, the oxidizing agent being lead dioxide used in an amount of at least 1 mol. per mol. of the phenol. The reaction may be carried out in a solvent in which both monomer and polymer are soluble, and a compound having a free electron pair, e.g. an amine or a dialkylsulphoxide, may be present. In examples, polymers are prepared by oxidizing 2,6-dimethylphenol, 2,6-diethylphenol, 2,6-dimethoxyphenol and 2,6-diphenylphenol with lead dioxide in benzene, toluene, chloroform and o-dichloro-benzene; other materials present are triethylamine, acetic acid, paratoluenesulphonic acid, perchloric acid, tetramethylguanidine, magnesium sulphate, pyridine and dimethylsulphoxide. |
| priorityDate | 1965-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.