PROCESS FOR FUNCTIONALIZING ISOOLEFIN/ALKYLSTYRENE COPOLYMER AND COMPOSITION CONTAINING A REACTION PRODUCT OF SAID COPOLYMER WITH A SUPERBASE AND AN ELECTROPHILIC REAGENT

摘要

A method of introducing functionality into a copolymer of an isoolefin and an alkylstyrene at the alkylbenzene carbon atom comprises the steps of forming a soln of the copolymer in a hydrocarbon solvent, adding to the polymer soln an alkali metal, Cs, K, Na alkoxide and an alkyl lithium cpd to form a super base with the polymer soln and adding an electrophile to the base polymer soln.. Also claimed are: (a) the compsn comprising the product resulting from reaction of a reaction product of a copolymer of a mono-isoolefin and a alkylstyrene with a super-base and an electrophilic reagent; (b) a random copolymer of formula (I); and (c) a method of metallating copolymer of an isoolefin and an alkylstyrene at the alkylbenzyl C atom where the process involves forming a soln of the copolymer in a hydrocarbon solvent, adding to the polymer soln, an alkali metal alkoxide and an alkyl lithium cpd to form a super-base with the polymer soln and recovering the metallated copolymer a =1-70,000, b =1-7,000; R1 and R2 =1-5C alkyl or H, provided that /- 1 is alkyl and R1+R2 /~ 5C; R3 and R4 = H, 1-4C alkyl M = an alkali metal other than Li