Abstract: (Meth)acrylate functional compound which is the reaction product of a cyclic secondary amine and a poly(meth)acrylate having at least three acrylate or methacrylate groups, useful for radiation curable coating or ink composition having low viscosity, low volatility, and high cure rate under radiation. Process of preparing a coating or ink composition using such compound. Radiation cured coating or ink based on such composition. Coated or printed article having such a cured coating or ink based on such composition.

Abstract: Free radical-curable compositions comprising a plastisol component and a copolymer containing free anhydride functionality and, optionally, other reactive diluents are provided. In particular, curable compositions employing a plastisol, preferably a polyvinyl chloride-containing plastisol, and a low molecular weight crosslinking copolymer component having free anhydride functionality and which is a partial esterification product of a terminally ethylenically unsaturated compound and a polymerizable maleic anhydride are provided. The compositions of the invention yield improved adhesives, sealants, coatings, and insulators for a wide variety of substrates and may be employed in a variety of coatings and castings. Processes for preparing cured plastisol compositions from the disclosed free radical-curable compositions are also provided.

Abstract: A polymer suitable for use as a solder mask comprised of an acrylated or methacrylated polyurethane having terminal alkene unsaturation at each end has been synthesized. This polymer can be a liquid or a hot melt and when in a photopolymerizable composition it is suitable for roller coating or screen printing onto a printed circuit board substrate.

Abstract: Energy-curable compositions can be cured in the presence of oxygen by exposure to actinic radiation employing as a photocatalyst system an essentially homogeneous admixture of (1) at least one compound which permits free radical polymerization through bimolecular photochemical reactions of the energy donor or energy transfer type, the hydrogen abstraction type, or by the formation of a donor-acceptor complex with monomers or additives leading to ionic or radical species; and (2) at least one photoinitiator selected from the group consisting of organic peroxide compounds which have as an identifying and critical feature at least one carbonyl group directly bonded through a carbon-oxygen bond to a peroxy oxygen atom.

Abstract: A process for preparing mercapto-alcohols by reacting a molar excess of hydrogen sulfide with an alkylene, cycloalkylene, or aralkylene oxide in the presence of an alkali metal zeolite catalyst.