http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0360578-A3
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate | 1989-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1990-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0360578-A3 |
| titleOfInvention | Process for the production of polycarbonates |
| abstract | Disclosed herein are processes for the producntion of polycarbonates by melt polycondensation of nan aromatic dihydroxy compound and a carbonic acid ndiester or a diphenyl carbonate compound wherein nsaid polycondensation is carried out in the presence nof from 0.05 to 15 mol %, based on 1 mole of the naromatic dihydroxy compound, of a phenol having from n10 to 40 carbon atoms, a carbonic acid diester havning from 17 to 50 carbon atoms.or a carbonic acid ndiester having form 13 to 16 carbon atoms, using a ncatalyst cjomprising (a) a nitrogen containing basic ncompound, (b) from 10⁻⁸ to 10⁻³ mole, based on 1 mole nofthe aromatic dihydroxy compound, of an alkali nmetal or alkaline earth metal compound, and (c) nboric acid or boric ester. Also disclosed is a npolycarbonate inwhich from 5 to 30 % of its terminal ngrouos are hydroxy groups and it has a sodium conntent of not more than 1 ppm and a chlorine content nof not more than 20 ppm. |
| priorityDate | 1988-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.