Abstract: Sulfonium-stabilized, water-compatible, radiation-curable vinyl ester resins are prepared by the process of reacting an epoxy resin having on the average at least one vicinal epoxy group with a mercaptan and with an unsaturated monocarboxylic acid to form vinyl ester resins containing sulfide moieties which are then reacted with a protonic acid and an alkylene oxide.Compounds so prepared can be diluted with water and used as coatings.

Abstract: A low viscosity copolymer polyahl dispersion is prepared by polymerizing polymer particles in a polyahl medium, to a first solids concentration and thereafter diluting the dispersion to a second lower solids concentration. The resulting diluted dispersion has a lower viscosity than if the dispersion were prepared directly at the lower solids level. The invention has particular advantage when used with "all acrylonitrile" dispersions. The copolymer polyahl dispersions are useful in the manufacture of urethane and isocyanurate foams.

Abstract: An adduct of a monoahl, e.g., a monohydroxyl polyalkylene oxide, and an active ethylenically unsaturated isocyanate, e.g., 2-isocyanatoethyl methacrylate, is usefully employed in the preparation of stable copolymer dispersions of the type used in the production of polyurethane foams and polyurethane elastomers.The copolymer dispersion is prepared by addition copolymerization of (1) the adduct with (2) ethylenically unsaturated monomer(s), e.g., styrene or mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound.

Abstract: A stable copolymer dispersion is prepared by addition copolymerization of (1) an adduct of an active hydrogen compound, e.g., a polyether polyol, and an active ethylenically unsaturated isocyanate, e. g., 2-isocyanatoethyl methacrylate with (2) ethylenically unsaturated monomers(s), e.g., styrene or mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.

Abstract: Novel sulfonium-stabilized, radiation-curable, water-compatible, water-in-oil emulsions and a method of preparation are described. As an example, one such emulsion was prepared by reacting the diglycidyl ether of a polypropylene glycol with essentially a stoichiometric equivalent of acrylic acid, about 0.3 equivalent of bis(2-hydroxyethyl)-sulfide and 1.5 equivalents of H.sub.2 O.

Abstract: The reaction product of an ethylenically unsaturated, monofunctional isocyanate, such as isocyanatoethyl methacrylate and a difunctional active hydrogen containing compound such as a polyol is useful as an anaerobic adhesive.