Metalation and functionalization of polymers and copolymers

Details Metalation and functionalization of polymers and copolymers Metalation and functionalization of polymers and copolymers

C - Chemistry, Metallurgy

08

F

C08F 8/42 (2006.01) C08F 8/00 (2006.01) C08F 210/10 (2006.01) C08F 212/12 (2006.01)

Patent

CA 2219464

There is provided a method of introducing functionality into a copolymer of an isoolefin and an alkylstyrene at the alkylbenzyl carbon atom comprising the steps of: forming a solution of said copolymer in a hydrocarbon solvent; adding to said polymer solution an alkali metal Cs, K, Na alkoxide and an alkyl lithium compound to form a superbase with the polymer solution; and adding an electrophile to said base polymer solution also provided are the metalated copolymers and the functionalized derivative therefrom.

Cette invention concerne un procédé d'introduction de fonctionnalité dans un copolymère d'une isooléfine et d'un alkylstyrène au niveau de l'atome de carbone d'alkylbenzyle. Ce procédé comprend les étapes suivantes: former une solution dudit copolymère dans un solvant à base d'hydrocarbure; ajouter à ladite solution de polymère un alcoxyde de métal alcalin Cs, K, Na et un composé d'alkyle-lithium afin de former une superbase avec la solution de polymère; enfin, ajouter un électrophile à ladite solution de polymère de base. Cette invention concerne également les copolymères métallatés et leur dérivé fonctionnalisé.

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