| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-65 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-65 |
| filingDate |
2000-10-19^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2003-08-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_efab709a1ec9831f5cf7829dcd8ec4d8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f092de5784d099ab78281a7bd2db63c4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c3251011fa2ba6e0ff25488229f71f58 |
| publicationDate |
2003-08-19^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6608678-B1 |
| titleOfInvention |
Situ determination of DPC and BPA in polycarbonate by Raman spectroscopy |
| abstract |
The present invention provides a method for monitoring a reaction mixture using Raman spectroscopy. In a preferred embodiment, the invention provides a method for monitoring bulk and thin film melt polycarbonate polymerization reactions. In this method, the relative and absolute concentrations of the starting materials diphenylcarbonate (DPC) and bisphenol-A (BPA) are determined. Monitoring and maintenance of optimum stoichiometry in such a reaction is critical to ensuring desired polycarbonate product quality. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104089941-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7505129-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7505127-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8618226-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106092945-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007197885-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6930775-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6953280-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007021586-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104089941-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007019191-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7830519-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20190134651-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8343608-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020516744-A |
| priorityDate |
2000-10-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |