Patent ID: 6667376
Filing Date: 2003-12-23
Classification: C07C,C07D,C08F

Abstract:
A method of free radical polymerization comprising (1) forming a mixture of one or more monomers, at least one free radical source and a control agent and (2) subjecting said mixture to polymerization conditions, wherein said control agent is characterized by the general formula:wherein R1 is any group that group that can be expelled as its free radical form in an addition-fragmentation reaction; R2 and R3 are each independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom-containing hydrocarbyl, and substituted heteroatom-containing hydrocarbyl, and combinations thereof, and optionally R2 and R3 are joined together in a ring structure having from 3 to 50 atoms in the backbone of the ring; also optionally, R2 and R3 are joined together to form a double bond optionally substituted alkenyl moiety.