Succinate-containing polymerization catalyst system using...

Details Succinate-containing polymerization catalyst system using... Succinate-containing polymerization catalyst system using...

C - Chemistry, Metallurgy

08

F

C08F 10/06 (2006.01) C08F 4/62 (2006.01)

Patent

CA 2665244

It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate- containing Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity along with broadened molecular weight distribution.

L'invention concerne l'utilisation de n-butylméthyldiméthoxysilane (BMDS) en tant que donneur d'électrons externe pour catalyseurs de Ziegler-Natta contenant du succinate, pouvant engendrer un système de catalyseur qui permet de préparer des films de polypropylène aux propriétés améliorées. Les systèmes de catalyseur selon la présente invention pourvoient à une distribution des défauts/des défauts de chaîne contrôlés, et donc une microtacticité régulée ainsi qu'à une répartition de poids moléculaire élargie.

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