Abstract: Stereoregular polystyrenes can be combined with a plasticizer to make a non-PVC plastisol with physical properties comparable to PVC-based plastisols.

Abstract: Novel fire-retardant and hydrolysis resistant, liquid, photosensitive compositions are disclosed comprising(1) the reaction product of(a) an aliphatic unsaturation containing chlorendate, and(b) a non-ester containing polythiol, said (a) and (b) being reacted non-stoichiometrically;(2) a member of the group consisting of either (a) or (b) in an amount up to that sufficient to react with the excess of the other in (1) and a liquid acrylate monomer or oligomer, and(3) at least one photoinitiator.Acrylates or methacrylate monomers are optionally added to the composition.

Abstract: This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising(1) an ethylenically unsaturated member of the group consisting of(a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is at least 2,(b) a polythiol in combination with (a) supra,(c) a polythiol in combination with a liquid ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR2## wherein R.sub.2 is H or CH.sub.3, R.sub.3 is an organic moiety and n is at least 2, and(d) mixtures of (a), (b) and (c),(2) a thermal initiator, and(3) an electrically conductive material.Heating of the composition in a desired pattern on a substrate results in a printed electric circuit.

Abstract: This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising(1) an ethylenically unsaturated member of the group consisting of(a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is at least 2,(b) a polythiol in combination with (a) supra,(c) a polythiol in combination with a liquid ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR2## wherein R.sub.2 is H or CH.sub.3, R.sub.3 is an organic moiety and n is at least 2, and(d) mixtures of (a), (b) and (c),(2) a thermal initiator, and(3) an electrically conductive material.Heating of the composition in a desired pattern on a substrate results in a printed electric circuit.

Abstract: This invention relates to an ethylenically unsaturated reactive thixotropic agent for use in radiation curable compositions, e.g., overprint varnishes, formed by reacting a hydroxyl-containing fatty acid ester with an ethylenically unsaturated isocyanate. The agent not only performs its thixotropic function in the uncured state but also forms part of the cured product on exposure to radiation, e.g., UV radiation due to its substantially similar reactivity.

Abstract: This invention relates to a process for preparing a catalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV or high energy ionizing radiation comprising reacting a sulfonium halide with an alkali metal salt of the complex anion in a solvent mixture containing a polyol having at least two hydroxy groups and a lactone.

Abstract: This invention relates to radiation curable compositions comprising mixtures of epoxy resin and di- or polyacrylate or methacrylate terminated monomers in combination with a catalyst system comprising a carbonyl type photoinitiator with an aromatic onium salt capable of effecting the cure by release of a Lewis Acid.

Abstract: This invention relates to a process for preparing a catalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV or high energy ionizing radiation comprising reacting a sulfonium halide with an alkali metal salt of the complex anion in a solvent mixture containing a polyol having at least two hydroxy groups and a lactone.

Abstract: A continuous protective coating is formed on a fiber optic by coating said fiber optic in a bath of a liquid radiation curable composition at a temperature up to 90.degree. C and thereafter exposing the coated conductor to ultraviolet or high energy ionizing radiation to cure the coating.