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

Patent

CA 2234807

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 Na, K, Rb, Cs alkoxide and an alkyl lithium compound to form a superbase with the polymer solution; and adding an electrophile to the metalated polymer solution; also provided are the metalated copolymers and the functionalized derivatives therefrom.

L'invention concerne un procédé permettant d'introduire une fonctionnalité dans un copolymère constitué d'une iso-oléfine et d'un alkylstyrène, au niveau de l'atome de carbone alkylbenzylique, consistant à: constituer une solution dudit copolymère dans un solvant à base d'hydrocarbure, ajouter à ladite solution de polymères un alcoxyde de métal alcalin (Na, K, Rb, Cs) et un composé d'alkyle-lithium pour former une superbase avec la solution de polymères; et à ajouter un constituant électrophile à la solution de polymères métallatés. L'invention concerne également les copolymères métallatés et les dérivés fonctionnalisés obtenus à partir de ceux-ci.

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