Abstract: Polymerizable reaction product mixtures are prepared by the reaction of an epoxide of a long chain (1) unsaturated fatty oil or (ii) unsaturated fatty acid or ester thereof with a mixture of (a) acrylic acid or methacrylic acid, (b) a diepoxide, and (c) at least one other modifying compound. The modifying compounds contain a group that will react with the epoxidized fatty oil or with the epoxidized fatty acid or ester. The mixtures produced are useful per se and in formulations as inks or coatings that are curable by exposure to radiation or by heating.

Abstract: Addition of a small amount by weight of nitrocellulose to certain acrylate or methacrylate containing radiation curable coating compositions greatly inhibits penetration of the uncured compositions into porous substrates such as paper or paperboard.

Abstract: Acrylate ester or methacrylate ester based photocurable compositions having added thereto poly(vinyl acetate) or poly(vinyl chloride/vinyl acetate) copolymers when applied to plastic substrates and cured with ultraviolet radiation show an unexpected improved adhesion to the plastic substrate.