POLYMERIZABLE COMPOSITIONS MADE WITH POLYMERIZATION INITIATOR SYSTEMS BASED ON ORGANOBORANE AMINE COMPLEXES

摘要

A polymerizable acrylic composition comprises: (a) at least one acrylic monomer; (b) an effective amount of an organoborane amine complex having structure (I), wherein R1 is an alkyl group having 1 to 10 carbon atoms; R2 and R3 are independently selected from phenyl-containing groups and alkyl groups having 1 to 10 carbon atoms; R4 is selected from the group consisting of CH2CH2OH and (CH2)xNH2 wherein x is an integer greater than 2; R5 is hydrogen or an alkyl group having 1 to 10 carbon atoms; and the nitrogen atom to boron atom ratio is about 1:1 to 1.5:1; and (c) an effective amount of an acid for initiating polymerization of the acrylic monomer. The polymerizable acrylic compositions are especially useful for bonding low surface energy substrates.