Method for monitoring monomer concentration in interfacial polycarbonate manufacturing process
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United States of America Patent
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Apr 23, 2013
Grant Date -
Feb 16, 2012
app pub date -
Feb 24, 2010
filing date -
Mar 24, 2009
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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.
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