Curable composition for electrical and electronic components

Improved composition capable of being UV cured and suitable for use as a printing ink comprising:

• (a) a prepolymer selected from the group consisting of monofunctional vinyl ester resins and multifunctional ester resins;
• (b) a monomer selected from the group consisting of monofunctional vinyl ester monomers selected from the group consisting of acrylate and methacrylate monomers and multifunctional vinyl ester monomers selected from the group consisting of arylate and methacrylate monomers;
• (c) a photoinitiator;
• (d) at least one pigment;
• and
• (e) at least one surface active agent having a molecular weight greater than about 227;
• wherein one of the surface active agent or the pigment has an overall pH greater than or equal to 7 and the other of the surface active agent or pigment has whereby the overall pH of the surface active agent(s) is less than 7 when the overall pH of the pigment(s) is greater than 7, an overall pH less than or equal to 7 and wherein the volume % of pigment is at least 60 based on the competition of a prepolymer, a monomer, a photoinitiator, a surface active and a pigment.