| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-24 |
| filingDate |
1996-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1998-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce953b91e2744a9a44404fe61b3ad4f4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77db1121f23c8c2b93c994cdae289ed6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da5bdfd7313c85879a900b3ce865e733
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4607293877384ce8e1a5913d9160b4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3572734ffb8b0ef36687222a1013c1c0 |
| publicationDate |
1998-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5739257-A |
| titleOfInvention |
Binary phase transfer/amine catalyst for making aromatic polycarbonates |
| abstract |
A composition and method is provided for making polycarbonate utilizing an effective amount of a binary catalyst system, comprising a phase transfer catalyst selected from the group consisting of methyltributylammonium halide and hexabutylbutylenediammonium halide and a tertiary organic amine, as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. Improved phosgene utilization and the substantial elimination of emulsion formation in the interfacial polymerization reactor and the processing units downstream thereof results. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9163157-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011086227-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6576739-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7056855-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6576735-B2 |
| priorityDate |
1994-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |