| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_212d642b5632025c13a6b2bc0202586b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dd02f14b1f7bad89a113a39b9e644994 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305
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/C08G64-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L69-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-5333 |
| filingDate |
2001-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56a518a9fff58ec440dc6479d449acd6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39f55d5ad2b7ec5d2b139c9f4861309c |
| publicationDate |
2002-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0224810-A1 |
| titleOfInvention |
Process for producing polycarbonate |
| abstract |
A process for producing a polycarbonate, characterized by compounding 100 parts by weight of a polycarbonate obtained by subjecting a carbonic diester and a dihydroxy compound to melt polycondensation in the presence of an alkali metal and/or alkaline earth metal catalyst with 0.0001 to 0.1 part by weight of a phosphite compound represented by the following general formula (I): (I) wherein R represents hydrogen, C1-18 alkyl or aryl, or C1-8 hydroxyalkyl, provided that not both of the R's are hydrogen. By the process, a polycarbonate molding material can be obtained which has an excellent hue and is usable in a wide range of applications such as optical materials. |
| priorityDate |
2000-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |