Patent ID: 7510623

Claim:
A method for joining a pipe having a first surface to an object having a second surface comprising the steps of: (i) applying an effective amount of a curable one or two part adhesive composition to the first surface of the pipe, the second surface of the object or to both surfaces, wherein the adhesive comprises (a) a boron containing initiator compound comprising an organoborane amine complex having the structure wherein B represents boron; R 2 is separately in each occurrence C 1-10 alkyl, C 3-10 cycloalkyl, or two or more of R 2 may combine to form a cycloaliphatic ring; Q is a hydrolyzable moiety; R 11 is independently in each occurrence hydrogen, alkyl, alkoxy, alkenyl, alkyl amino or corresponds to the formula ((CR 14 H) r O) n â€”(NR 4 ) â€”(CH 2 ) o â€”NH 2 with the proviso that at least (R 11 )â€² is a primary amine leave this as is; R 12 is independently in each occurrence hydrogen, alkyl, aryl, alkoxy, and may further contain one or more primary, secondary or tertiary amines; R 14 is separately in each occurrence hydrogen or alkyl; R 4 is hydrogen, C 1-10 alkyl, C 6-10 aryl or C 7-10 alkaryl; a is a number of from 1 to 10; b is a number of from 0 to 1; m is separately in each occurrence a whole number of 1 or greater; p is separately in each occurrence a number of from 1 to 3; q is separately in each occurrence an integer from 1 to 2 wherein the sum of p and q on each silicon atom is 3; n is separately in each occurrence an integer of about 4 to about 400; o is separately in each occurrence an integer of about 1 to about 9; and r is separately in each occurrence an integer of 2 or 4, (b) one or more monomers, oligomers, polymers or mixtures thereof having olefinic unsaturation which is capable of polymerization by free radical polymerization, and (c) optionally a decomplexing agent and (ii) joining the first surface of the pipe with the second surface of the object wherein the pipe and object independently comprise one or more polyolefin.