Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-24 |
classificationIPCInventive |
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/C08G64-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-79 |
filingDate |
1996-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
1998-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_da5bdfd7313c85879a900b3ce865e733 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77db1121f23c8c2b93c994cdae289ed6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4607293877384ce8e1a5913d9160b4e |
publicationDate |
1998-04-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-5744416-A |
titleOfInvention |
Catalyst system for polycarbonate manufacture |
abstract |
A method is provided for making polycarbonates utilizing an effective amount of a binary phase transfer catalyst, such as tetrabutylammonium bromide and a methyl tertiary amine as a condensation catalyst during the interfacial phosgenation of a bisphenol, such as bisphenol A. Improved phosgene utilization is achieved. |
priorityDate |
1994-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |