Patent ID: 6894133

Claim:
A controlled radical polymerization initiator comprising: a) a compound of the formula: wherein X is Cl, Br, or a pseudohalogen group; R 1 and R 2 are each independently selected from X, H, an alkyl group, a cycloalkyl group, a heterocyclic group, and arenyl group and an aryl group or R 1 and R 2 taken together with the carbon to which they are attached form a carbocyclic ring; R 3 and R 4 are each independently selected from an alkyl, a cycloalkyl group, an aryl group, an arenyl group, or R 3 and R 4 taken together with the carbon to which they are attached form a carbocyclic ring; Q is a linking group selected from a covalent bond, (—CH 2 —) o , —CO—O—(CH 2 ) o —, —CO—O—(CH 2 CH 2 O) o —, CO—NR 6 —(CH 2 ) o —, —CO—S—(CH 2 ) o —, where o is 1 to 12, and R 6 is is H, an alkyl group, a cycloalkyl group, an arenyl group, a heterocyclic group or an aryl group; and n is 0 or 1.