Photohardenable compositions

A photohardenable, liquid composition comprising:

• (a) an organic compound having an average epoxide functionally in the range of about 1 to 1.3;
• (b) an organic polymer which is compatible with said organic compound, said polymer having a glass transition temperature in the range of about -20.degree. C. to 105.degree. C. and being selected from (i) polymers derived from at least one acrylate or methacrylate monomer, (ii) copolymers of styrene and allyl alcohol, and (iii) polyvinyl butyral polymers;
• said polymer being present in an amount of about 3% to about 50% by weight based on the weight of said organic compound;
• and
• (c) an effective amount of an aromatic complex salt photoinitiator selected from an onium salt of a Group VA element, and onium salt of a Group VI A element, and an aromatic halonium salt.