Patent ID: 7825199

Claim:
A process of atom transfer radical addition for adding functionality to an oligomer or polymer, comprising: reacting a first oligomer or polymer having a radically transferable atom or group with an unsaturated second compound having a first desired functional group, the second compound reactive with the first oligomer or polymer after removal of the radically transferable atom or group, in the presence of a system comprising: a catalyst which participates in a reversible cycle with the first oligomer or polymer transferring the radically transferable atom or group from the first oligomer or polymer to the catalyst, forming an active species from the first oligomer or polymer that adds the unsaturated second compound to form a second oligomer or polymer and transferring the radically transferable atom or group from the catalyst to the second oligomer or polymer, wherein the second oligomer or polymer having the first desired functional group and the radically transferable atom or group is not reactive to the catalyst.