Acrylic adhesive composition and organoboron initiator system
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorMartin M. Skoultchi
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Abstract
A two-part initiator system useful in acrylic adhesive compositions comprising in one part a stable organoboron amine complex and in the second part an aldehyde destabilizer or activator. This initiator is particularly useful in elastomeric acrylic adhesive compositions and provides room temperature, relatively slow curing systems with good adhesive properties making them useful in applications where longer open times are required.
Claims13
A curable two-part adhesive composition wherein one part comprises a polymerizable acrylic monomer and an effective amount of a stabilized organoboron amine complex initiator of the formula:
- ##STR16## where R, R.sub.1 and R.sub.2 are alkyl of 1 to 10 carbon atoms or phenyl, R.sub.3 and R.sub.4 are hydrogen or alkyl of 1 to 10 carbon atoms, or ##STR17## where R.sub.5 and R.sub.6 are hydrogen or alkyl of 1 to 10 carbon atoms, m is 2 to 10 and n is 1 to 6;
- and the second part comprises an effective destabilizing amount of an organic aldehyde having the formula:
- ##STR18## where R is alkyl of 1 to 10 carbon atoms or aryl of 6 to 10 carbon atoms and x is 1 to 2.
Dependencies are inferred from the claim text.