Amine organoborane polymerizable compostion and uses therefor

A method of adhering a first mating surface to a second mating surface, the method comprising:

• providing a hardener part comprising an ornanoborane/amine complex and a plasticizer selected from the group consisting of silanes, aliphatic and aromatic esters of phthalic acid, aliphatic and aromatic esters of phosphoric acid, aliphatic trimellitate esters, aliphatic esters of adipic acid, stearate, sebacate and oleate esters, having a viscosity of at least about 90,000 cp and less than about 230,000 cp and a resin part comprising one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization;
• and a compound which causes the said complex to disassociate so as to release the borane to initiate polymerization of one or more of monomers, oligomers or polymers having olefinic unsaturation, having a viscosity of at least about 200,000 cp and less than about 350,000 cp;
• combining the resin part and the hardener part to form an adhesive polymerizable composition, and
• contacting the polymerizable composition with the first surface and the second surface and allowing the polymerizable composition to polymerize and bond to the first surface and the second surface thereby forming a joint between the first surface and the second surface.