Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-205 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-14 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-14 |
filingDate |
2002-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43360e6767457222e3712ca0c751cf2a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_598b8a568abbee0b26b8d53516847d3e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3e992df6f1220bb7fabb3ef7ae6c832c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_afa4058deab8f81ffdff0d1cc51975b9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e04daa7834e2e8d61862ebc04c6c68f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bb3b9120158355dccac095efa5d5b7d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f0791b281e58f9631787cd226182a93 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f738e46483250f74dd4590084bd8d3c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1fb20af234b4796adebc0f9bfc45fa3 |
publicationDate |
2003-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-2003088051-A1 |
titleOfInvention |
Process for preparing polycarbonate and apparatus for preparing polycarbonate |
abstract |
A process for preparing an end-capped polycarbonate comprises melt reacting an aromatic dihydroxy compound, a carbonic acid diester, and optionally a catalyst in a prepolymerization vessel to form a polycarbonate product; transferring the polycarbonate product from the prepolymerization vessel; mixing the polycarbonate product with an end-capping agent under hermetic seal at a pressure of at least about 760 mm Hg; and transferring the polycarbonate product and end-capping agent mixture to a postpolymerization vessel to endcap the polycarbonate product. An apparatus for preparing an end-capped polycarbonate comprises a prepolymerization vessel having and inlet and an outlet; a postpolymerization vessel having an inlet and an outlet; a mixer in fluid communication with the outlet of the prepolymerization vessel and the inlet of the postpolymerization vessel; and a charging port through which an end-capping agent is charged to the mixer, wherein the mixer is hermetically sealed at greater than or equal to 760 mm Hg. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6838543-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7919644-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007185164-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004106765-A1 |
priorityDate |
2001-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |