The present invention relates to a diacrylate compound represented by general formula (1), a composition thereof, and a cured product of the compound/composition. ##STR00001## In the formula, R denotes a hydrogen atom or a methyl group; R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each independently denote a C.sub.1-6 linear or branched alkyl group, with the proviso that R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are not all methyl groups. The present invention provides: a novel diacrylate compound which can provide a cured product having an excellent balance of physical properties such as low curing shrinkage, flexibility, resistance to bending, and low curling properties, and which can be used as a photo- or thermal-radical polymerizable monomer; a composition of the compound; and a cured product of the compound/composition.

A protective coat layer-forming composition is used for forming a protective coat layer of a protective coat layer-laminated film including a base film made of a cyclic olefin resin and the protective coat layer formed on at least one side of the base film. The protective coat layer-forming composition includes a component (A) of a multifunctional acrylate monomer, a component (C) of an isocyanuric acid derivative having two or more (meth)acryloxy groups, a component (D) of a caprolactone oligomer derivative having three or more (meth)acryloxy groups, and a component (E) of a photopolymerization initiator.

A photocurable composition contains at least one ultraviolet absorber represented by Formula (1), and a hard coating agent including the photocurable composition. ##STR00001##
wherein R.sup.1, R.sup.2 and R.sup.3 may be the same as or different from each other and represent a branched or linear alkyl group with 1-20 carbon atoms and is substituted with a (meth)acryloyloxy group; the alkyl group may be substituted with a hydroxyl group, an alkoxy group having 1-8 carbon atoms, or an acyloxy group having 1-8 carbon atoms; the alkyl group may be interrupted by an oxygen atom, a sulfur atom, a carbonyl group, an ester group, an amide group, or an imide group; and R.sup.4, R.sup.5 and R.sup.6 may be the same as or different from each other and represent a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1-12 carbon atoms, or an alkoxy group having 1-12 carbon atoms.

Disclosed herein are coating solutions comprising a reactive monomer, process and compositions for preparing the same that are suitable for a coating and/or reactive coating. More particularly, the present invention relates to monomers of functionalized 4- or 5-vinyl substituted regioisomers of 1,2,3-triazoles comprising a polymerizable functionality and their use in coatings. Also disclosed are applications and compositions comprising coating solutions of a reactive monomer and its application in printing processes and inks.