http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03100206-A8
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d35a8340c13d7a4a447f5178fd372b8a http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0c380e008fed0ad8c94fb1f05879c43c http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_063d22db17e10ea901da88fd556384fd http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d63c7329ea29659eb99ea95258912ab1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33c922e05f6133b7d72dbb849d77487d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31507 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31504 |
| 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 | 2003-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_640b5bbbeb6d9bcc7b1d5776aab7c867 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d0664c273c6bdee78b6c71787d48aa2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_863c2319a60479187e032a4a7bb7fa9c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce28c5306610d8f23b1b634c2a1fc9b9 |
| publicationDate | 2004-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-03100206-A8 |
| titleOfInvention | Method for preparing high molecular weight polycarbonate |
| abstract | The present invention relates to a process for preparing high molecular weight polycarbonate resin, particularly to a process for preparing high molecular weight polycarbonate resin, which conducts condensation polymerization of low molecular weight amorphous polycarbonate prepolymer prepared by transesterification of dialkyl(aryl)carbonate and aromatic hydroxy compound and solid state polymerization within short time to increase molecular weight. The present invention introduces condensation polymerization to lower mole fractions of arylcarbonate existing in unreacted diarylcarboante, end groups of reaction by products of polymerization degree less than 3, and polycarbonate prepolymer obtained by transesterification, and thus can maximize molecular weight increase of polycarbonate after solid state polymerization and remarkably reduce time required for preparing polycarbonate of the same molecular weight. In addition, since the present invention does not use toxic substance phosgene, it has no danger and it can prevent deterioration, and it can prepare high molecular weigh polycarbonate that can be used for injection and extrusion. |
| priorityDate | 2002-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.