Chemistry: analytical and immunological testing – Testing of catalyst
Reexamination Certificate
2007-03-30
2010-12-07
Soderquist, Arlen (Department: 1797)
Chemistry: analytical and immunological testing
Testing of catalyst
C436S050000, C436S055000, C436S086000, C436S181000
Reexamination Certificate
active
07846736
ABSTRACT:
In some embodiments, a method of monitoring a resin-producing polymerization reaction in a fluid bed reactor system to generate reaction parameter data in on-line fashion, determining an indicator of at least one of entropy and complexity (for example, Kolmogorov or Shannon entropy) of each of at least two subsets of the reaction parameter data, and optionally also determining from at least one value of the indicator (for example, from a time series of Kolmogorov or Shannon entropy values) an indication of at least one of degree of resin stickiness, an approach to or imminence of resin stickiness, and an approach to or imminence of an unsafe or undesired reactor operating condition (e.g., that can result in sheeting or chunking). Optionally also, the reaction is controlled in response to at least one value of the indicator, for example, in an effort to prevent the occurrence of sheeting or another discontinuity event or to maintain the reactor in a stable, non-sticking condition.
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Daw C. Stuart
Finney Charles E. A.
Muhle Michael E.
Nguyen Ke
Soderquist Arlen
Univation Technologies LLC
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