Patent ID: 7534843
Filing Date: 2009-05-19
Classification: C08F,C09J

Abstract:
1. A two part composition comprising in one part an organoboron compound capable of forming free radical generating species comprising an organoborane amine complex and one or more compounds capable of free radical polymerization and in the second part one or more compounds capable of free radical polymerization and a cure accelerator which is a substituted or unsubstituted quinone, napthaquinone or anthraquinone present in an amount, which accelerates cure of the composition and does not inhibit adhesion of the combined parts of the composition to a substrate surface, of greater than 0.01 percent by weight of the two part composition; wherein the cure accelerator is located only in the second part and not in the part, part one, containing the organoboron compound, and a decomplexing agent capable of decomplexing the organoboron compound upon contacting the two parts, wherein the parts of the composition, prior to contacting of the two parts, exhibit a viscosity increase of less than 150 percent over 30 days when stored at 40° C. or less, and the composition once combined exhibits a lap shear strength of 50 psi or greater two hours after application to a substrate comprising polypropylene.