Union Carbide Chemicals & Plastics Technology Corporation

Darrell James Long

John Roberts Parrish

Ivan Jeremy Hartley

Paul Kevin Samples

In a polymerization reaction, an upset is anticipated and inhibited by monitoring at least one reaction condition and comparing it to the desired value or normal range for the condition as projected by a computer model for the variable or variables of the process. In a preferred variation, the process not only continuously adjusts the set point or range for an upset-significant variable such as temperature, but also utilizes the rate of change of such a variable as a harbinger of an upset.

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Destrehan, LA, United States of America

Darrell James Long