http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106543431-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2650-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2650-64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-40 |
| filingDate | 2016-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106543431-B |
| titleOfInvention | A kind of imido method of synthesizing polyether |
| abstract | The present invention provides a kind of imido methods of synthesizing polyether: a) halobenzoyl anhydride and diisocyanate are under inert gas shielding, normal temperature condition; the solution of heptatomic ring substance is generated in aprotic polar solvent; 6-membered heterocyclic compound catalyst is added in the solution; system is heated to the imidization for carrying out heptatomic ring carbon dioxide removal, generates double halogenated double phthalimide solution；B) system is added in the inorganic base substance equal with the mole of binary phenolic hydroxyl group with the equimolar dihydric phenol of diisocyanate, alkali metal ion, liquid hydrocarbon and step a) obtained double halogenated double phthalimide solution in aprotic polar solvent; polycondensation reaction is carried out under inert gas protection, obtains polyetherimide solution；C) it is precipitated in alcohols solvent after the polyetherimide solution cooling obtained to the step b) and obtains polyetherimide solid powder. |
| priorityDate | 2016-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 109.