Patent ID: 8652578

Claim:
A method of polymerizing a radical polymerizable compound using an organoborane initiator, said method comprising the steps of: A. introducing the radical polymerizable compound and the organoborane initiator onto a substrate to form a mixture wherein the organoborane initiator is complexed with a bi-functional noncyclic blocking agent having a carbon backbone and two organoborane complexing moieties different from each other and selected from the group of an amine moiety, a thiol moiety, and a phosphine moiety and wherein the two differing moieties are separated from each other by two to four carbon atoms to increase nucleophilicity of the blocking agent towards the organoborane initiator thereby allowing the blocking agent to more completely interact with the organoborane initiator; B. decomplexing the organoborane initiator from the blocking agent thereby forming a radical; and C. polymerizing the radical polymerizable compound using the radical, at a temperature of from 20° C. to 30° C.