http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1161989-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-28 |
| filingDate | 1981-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1984-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9f23804f1eaf273b93a22d464a69352 |
| publicationDate | 1984-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1161989-A |
| titleOfInvention | Interfacial polymerization process for preparing polycarbonates using certain nitrogen-containing organic catalysts |
| abstract | AN INTERFACIAL POLYMERIZATION PROCESS FOR PREPARING POLYCARBONATES USING CERTAIN NITROGEN-CONTAINING ORGANIC CATALYSTS ABSTRACT OF THE DISCLOSURE The present invention relates to an interfacial polymerization process for preparing high molecular weight aromatic polycarbonates by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a selected one of a group of nitrogen-containing organic catalysts. The group of catalysts include certain sterically hindered secondary amines; non-cyclic polyamines, isourea compounds and iminoethers; and, certain nitrogen-containing heterocyclic compounds including cyclic di- or triamines, sterically hindered heterocycloaliphatic secondary amines, cyclic isourea compounds, cyclic iminoethers, pyrroles, nitrogen crown-cyclic compounds and certain other five to eight membered nitrogen-carbon heterocyclic compounds. Salts of certain of the foregoing may also be employed as catalysts in the practice of the present invention. |
| priorityDate | 1981-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 214.