Patent ID: 8491749

Claim:
A two-part structural adhesive composition comprising: a curable epoxy resin; an amine curing agent; a toughening agent; and a reactive liquid modifier comprising (i) an acrylate functionalized compound selected from the group consisting of: (a) an acrylate functionalized compound having the general formula Y—[(O—(CO)—(CH 2 ) 5 ) g —O—(CO)—C(R 1 )═CH 2 ] h wherein Y is a branched or linear alkyl chain having from about 1 to 10 carbon atoms or a heteroalkyl chain having from about 1 to 10 carbon atoms; each R 1 is, independently, H or a C 1 -C 4 alkyl; each g is, independently, an integer value ranging from about 1 to 35; and h is an integer value ranging from about 1 to 22; and (b) an acrylate functionalized compound having the general formula wherein each R 1 is, independently, H or a C 1 -C 4 alkyl; i and j are each, independently, integer values ranging from about 1 to 10; and k and l are each, independently, integer values of at least 1 whose combined sum ranges from about 2 to 135, (ii) an acrylamide functionalized compound, (iii) an oxalic amide functionalized compound, (iv) an acetoacetoxy functionalized urethane, (v) an acetoacetoxy functionalized polyalkene, or (vi) combination thereof.