Method for monitoring monomer concentration in interfacial polycarbonate manufacturing process
US8426531B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8411
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to an improved process for online measurement of monomer concentration, specifically bisphenol A, in an interfacial polycarbonate manufacturing process. Wherein the measurement is obtained by vibrational spectroscopy for the purpose of improving process control, specifically, controlling the carbonate polymer molecular weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.