Adhesive composition consisting primarily of alpha -cyanoacrylate compound

摘要

An alpha -cyanoacrylate adhesive composition including as the main components thereof: (A) an alpha -cyanoacrylate prepared by the process having the steps of thermally depolymerizing a condensation product obtained from a cyanoacetic acid ester, and formaldehyde or a polymer thereof using as a catalyst a polymerizable imine represented by the formula <IMAGE> wherein R1 and R2 are the same or different and are each CH3 or H to obtain a crude monomer, and rectifying the crude monomer, (B) a fine particulate silica having an absorbed and adsorbed water content of 0.08 to 1.30 wt % and 2.7 to 5.2 silanol groups/100 ANGSTROM 2 on the surface thereof, and (C) an acid-treated (poly)-alkylene glycol.