Abstract: A radiation curable coating composition is provided and includes an effective amount of cationic photoinitiator, in combination with a charge transfer complex, the charge transfer complex comprising at least one electron withdrawing reactant component and at least one electron donating reactant component free radically reactive therewith, the electron withdrawing reactant component comprising an unsaturated nitrogen containing compound and the electron donating reactant component comprising an unsaturated compound having at least one vinyl ether group, the electron donating reactant component may be separate from or structurally incorporated within the electron withdrawing reactant component and an effective amount of a cationic photoinitiator. A photopolymerization process employing the composition is also provided.

Abstract: A cyanoacrylate adhesive composition having improved toughness comprising a cyanoacrylate monomer and an effective toughening amount of a polyester polymer derived from a dibasic aliphatic or aromatic carboxylic acid and a glycol and having repeating units of the structure: ##STR1## where R is the organic residue of the dibasic carboxylic acid and R.sup.1 is the organic residue of the glycol, the polyester having a weight average molecular weight of greater than 10,000 and a Tg of from about -40.degree. to 30.degree. C.