Patent ID: 8394898

Claim:
A method for preparing a telechelic polymer of formula I: or a mixture thereof; wherein: R 1 is a polyolefin group; R 2 and R 3 are, independently in each —(CR 2 R 3 )— unit, hydrogen or alkyl from 1 to 6 carbons; m is an integer from 2 to 20; R X is a cationic initiator residue; and p is an integer from 1 to 4; comprising: (a) generating a quasiliving carbocationic polyolefin in a quasiliving reaction system; (b) adding to the quasiliving reaction system of step (a) a compound of formula II: wherein R 4 is alkyl, alkenyl, alkynyl, aryl, alkaryl, aralkyl, —C(O)R 5 , —SO 3 R 6 , —SO 2 R 7 , or —Si(R 8 )(R 9 )(R 10 ); wherein R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are each, independently, alkyl or aryl; to form one or more intermediate(s); and (c) reacting the one or more intermediate(s) from step (b) with one or more acid(s) in situ to form the telechelic polymer of formula I.