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AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsJohn R. Parrish, Mark L. Nelson
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The invention is directed to a polymerization system and method of controlling resin properties during the production of bimodal and multimodal polymer compositions using at least one manipulated variable to minimize dynamic deviations from polymer characteristics. In particular embodiments, the method of control includes determining a property of the resin based on a current and/or previous values or estimates or process variables or polymer characteristics. In this manner the control actions serve to reduce process upsets or facilitate in transitioning to a new product or grade to reduce the amount of off-grade resin material produced during transition or during steady state manufacture.
A method of controlling a process for producing a polymer in at least one reactor, comprising:
A method of controlling a process for producing a polymer composition, the method comprising:
Dependencies are inferred from the claim text.