| abstract |
An alpha -cyanoacrylate adhesive composition having high thixotropy, excellent stability with age including difficulty of separation and excellent adhesiveness, for use of rubbers, plastics, metals or so, comprises (b) 10 through 20 parts by weight of polymers containing alkyl methacrylate having a weight average molecular weight of 100,000 through 300,000, (c) 2 through 20 parts by weight of ultrafine anhydrous silica, and (d) 0.001 through 20 parts by weight of quick curing additives represented by the formula (1), (b)-(d) being on the basis of (a) 100 parts by weight of alpha -cyanoacrylates: <IMAGE> (1) wherein X1 is a hydrogen atom or methyl group; X2 is a hydrogen atom, methyl group or cyano group; X3 is R2 or R2CO in which R2 represents a hydrocarbon residue containing no anionically polymerizable group; and l, m and n are integers and (l+m)>/=1 and n>/=1. |