Preparation of exo-olefin terminated polyolefins via...

C - Chemistry – Metallurgy – 08 – F

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C08F 8/00 (2006.01) C08F 8/18 (2006.01) C08F 8/42 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2727679

Provided herein are methods for preparing a polyolefin containing one or more exo-olefinic end groups on the polyolefin chain, comprising quenching an ionized polyolefin with an alkoxysilane or an ether. In some embodiments, the methods are represented by the following scheme I: In some embodiments, the alkoxysilane or ether compound has the formula II: wherein Y is carbon or silicon; R1 is hydrocarbyl; and R2-R4 are each, independently, hydrogen or hydrocarbyl.

L'invention concerne des procédés de préparation d'une polyoléfine contenant un ou plusieurs groupes terminaux exo-oléfiniques sur la chaîne polyoléfine, consistant en un refroidissement rapide d'une polyoléfine ionisée avec un alkoxysilane ou un éther. Dans certains modes de réalisation, les procédés sont représentés par la relation suivante I : Dans certains modes de réalisation, le composé alkoxysilane ou éther correspond à la formule II : dans laquelle Y représente du carbone ou du silicium ; R1 représente un hydrocarbyle ; et R2 à R4 représentent chacun, de façon indépendante, l'hydrogène ou un hydrocarbyle.

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