http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-69928692-T2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate | 1999-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2006-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e4d5fb8aa03a47d881fe57a834fb8c2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3e992df6f1220bb7fabb3ef7ae6c832c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb551d2d0d197a2dbf35cdacd89f1b8a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7863a016729a1ce06b6f8dcb2aa896af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1fb20af234b4796adebc0f9bfc45fa3 |
| publicationDate | 2006-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-69928692-T2 |
| titleOfInvention | PROCESS FOR PREPARING POLYCARBONATE |
| abstract | The manufacture of polycarbonates can be accomplished via an ester interchange reaction of a dihydroxy compound and a carbonic acid diester. The method, which can be a single or multi-stage process wherein the total amount of alkali metal compounds and alkaline earth metal compounds contained as impurities is 1x10-7 moles or less per mole of dihydroxy compound used as raw materials, and the catalyst employed is an ammonium and/or phosphonium compound, a compound which decomposes or volatilizes at a temperature of 100 to 300° C., and/or an alkali metal phosphorous containing inorganic salt and/or alkaline earth metal phosphorous-containing inorganic salt. |
| priorityDate | 1998-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.