Patent ID: 6753391
Filing Date: 2004-06-22
Classification: C08F

Abstract:
A controlled radical polymerization chain transfer agent comprising a compound of the formula: wherein R1 and R2 are each independently selected from H, an alkyl group, a nitrile, a cycloalkyl group, a heterocyclic group, an arenyl group and an aryl group, or R1 and R2 taken together with the carbon to which they are attached form a carbocyclic ring; R3 and R4 are each independently selected from an alkyl group, a cycloalkyl group, an aryl group, an arenyl group, a heterocyclic group or R3 and R4 taken together with the carbon to which they are attached form a carbocyclic ring; Yâ€”S is a xanthate group, a thioxanthate group, or a dithioester group; Q is a linking group selected from a covalent bond, aryl group, (â€”CH2â€”)o, â€”COâ€”Oâ€”(CH2)oâ€”, â€”COâ€”Oâ€”(CH2CH2O)oâ€”, â€”COâ€”NR8â€”(CH2)oâ€”, â€”COâ€”Sâ€”(CH2)oâ€”, where o is 1 to 12, and R8 is H, an alkyl group, a cycloalkyl group, and arenyl group, a heterocyclic group or an aryl group; Z is O, NH, S or NR8 R7 is an organic or inorganic moiety and m is 1-8 and n is 0 or 1.