| abstract |
A 2-cyanoacrylate-based adhesive composition includes a 2-cyanoacrylic acid ester (a) and an onium salt (b) represented by general formula C + A − . In the formula, C + is an onium cation, and A − is a hydrogen sulfate anion, bisulfite anion, sulfonate anion represented by R 1 SO 3 − (where R 1 is an alkyl group, perfluoroalkyl group having 3 to 10 carbon atoms, cycloalkyl group, vinyl group, aryl group, perfluoroaryl group, aralkyl group, or halogen atom), or bis(substituted sulfonyl)imide anion represented by (R 2 SO 2 ) 2 N − (where R 2 is an alkyl group, perfluoroalkyl group, or aryl group).) The 2-cyanoacrylate-based adhesive composition has good storage stability and has an excellent adhesion rate to metals and thermoplastic elastomers. |