NMR analysis of polypropylene in real time
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United States of America Patent
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Apr 12, 1994
Grant Date -
N/A
app pub date -
May 19, 1992
filing date -
May 19, 1992
priority date (Note) -
Expired
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Abstract
Pulsed NMR system for industrial measurements comprising sample throughput system (P, LI, V1, V2) and user system controls (104) to establish digitized free induction decay (FID) curves (C), from which fast Gaussian, slower modified Gaussian and exponential components are determined using a Marquardt-Levenberg iteration technique, and using regression techniques to correlate the FID curve components to the physical quantities of the target nuclei.
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