Aromatic polycarbonate characterization
US6541264B1 · kind B1 · utility
2Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6421
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a rapid and non-invasive method for characterizing aromatic polycarbonates, fluorescence intensities are determined at least two wavelength ranges and used to calculate a compositional or physical property of the sample. The method is suitable for determining the relative amounts of linear and branched polycarbonates, and it is fast enough to monitor the progress of polymerization reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.