Method for online estimation of reactor split for multimodal...

C - Chemistry – Metallurgy – 08 – F

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C08F 2/00 (2006.01)

Patent

CA 2562574

The present method is directed to techniques for estimating and periodically controlling the reactor split of alpha-olefin polymerizations using multiple catalysts that selectively incorporate monomers and other reactants into polymer compositions. The method provides for the rapid determination of instantaneous reactor split and cumulative split in polymerization reactors by the use of a novel linear relationship between Incorporation and Reactor Split.

La présente invention concerne des techniques permettant d'estimer et, périodiquement, de commander la fraction de poids d'un composé de réacteur de polymérisations d'.alpha.-oléfines au moyen de plusieurs catalyseurs qui servent à incorporer sélectivement des monomères et d'autres réactifs dans des compositions polymères. Cette invention a aussi trait à la détermination rapide d'une fraction de poids instantanée d'un composé du réacteur et d'une fraction de poids cumulée d'un composé dans des réacteurs de polymérisation au moyen d'une nouvelle relation linéaire entre l'incorporation et la fraction de poids d'un composé du réacteur.

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