| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-1535
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-307 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 |
| filingDate |
2007-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d4953ab214d5ee972385e4f1d8b7ed65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8823dbf4fd6f24ac30fdbdd714a6ee2d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc61bc8d2a7c66dcc47aef844d3e5951
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cda1eb87296b222161929bb4df1da1e4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1f742d0edef96f6e29c91d100b7e977 |
| publicationDate |
2008-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-200804458-A |
| titleOfInvention |
Method of stabilization of dihydric phenols |
| abstract |
A method of producing a polycarbonate, the method comprising: polymerizing a dihydric phenol and a carbonate precursor in the presence of a stabilizer to provide a polycarbonate with a yellowness index of less than or equal to 10 measured in accordance with ASTM E313 test method on molded samples having a thickness of about 2.5 millimeters; wherein the stabilizer is selected from the group consisting of ascorbic acid, salts of ascorbic acid, esters of ascorbic acid and a mixture of two or more of the foregoing; wherein the dihydric phenol is represented by Formula (I): wherein R is a hydrogen atom or an aliphatic functionality having 1 to 6 carbon atoms; and n is an integer having a value of 1 to 4. |
| priorityDate |
2006-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |