| 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/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-42
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> |
| grantDate |
2003-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
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_5bb3b9120158355dccac095efa5d5b7d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f0791b281e58f9631787cd226182a93
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43360e6767457222e3712ca0c751cf2a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1fb20af234b4796adebc0f9bfc45fa3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_afa4058deab8f81ffdff0d1cc51975b9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f738e46483250f74dd4590084bd8d3c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e04daa7834e2e8d61862ebc04c6c68f |
| publicationDate |
2003-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6620902-B2 |
| 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-7495065-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008013559-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10106648-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009286952-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016079706-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7671165-B2 |
| priorityDate |
2001-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |