Metalation and functionalization of polymers and copolymers

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

1997-06-05

1998-10-13

Lipman, Bernard

Abrasive tool making process, material, or composition

5253335, 5253336, 525342, 525348, 5253591, 525383, 525385, 525386, C08F 834

Patent

active

058213082

ABSTRACT:
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.

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Harris, Jr., et al., "Block and Graft Copolymers of Pivalolactone. 5. Graft Copolymers from Pivalolactone ans Isobutylene", Macromolecules, 19, pp. 2903-2908, (1986).
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L. Lochmann, et al., "Lithium-Potassium Exchange in Alkyllithium/Potassium t-Pentoxide Systems", J. Organometallic Chemistry, 326, pp. 1-7, (1987).
L. Lochmann, et al., "More Efficient Metallation of Alkylbenzenes by Modified Superbases from Butyllithium and Potassium Alkoxides Structure and Concentration", Tetrahedron Letters, 32(11), pp. 1483-1486, (1991).
Lochmann, et al., "Globular Polyethers with Internal Functionalization by Metalation of Dendrimers and Reaction with Electrophiles", Polym. Mater. Sci. Eng., 69, pp. 426-427, (1993).
l. Lochmann, et al., "A Novel Approach to Graft Copolymers via the Metalation of Polystyrene by Superbase and Reaction with Electropiles", Polymer Preprints, 34(2), pp. 588-589, (1993).

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