Patent ID: 8133954

Claim:
A method for preparing a compound of formula II or III or mixtures thereof: wherein R 1 is a polyolefin group; R A and R B are each, independently, alkyl, aryl, aralkyl, alkaryl, wherein m is 1-3; n is 1-3; p is 1-3; X is halo or a pseudohalide; R x is alkyl or aryl; R 3 is tert-butyl; and R 4 and R 5 are each, independently, alkyl, aryl, aralkyl, or alkaryl; comprising: (a) ionizing a polyolefin in the presence of a Lewis acid or mixture of Lewis acids to form an ionized polyolefin; (b) reacting the ionized polyolefin from step (a) with one or more compounds of formula IV: R A —S—S—R B IV to form an intermediate; and (c) reacting the intermediate of step (b) with one or more alcohols, amines, or thiols.