Jettable compositions

A curable jettable composition having a viscosity less than 30 cps at a temperature within the range of 15° C.-180° C. comprising:

• (a) 25% to 80% by weight of at least one low viscosity reactive resin consisting of one or more oxetane compounds, wherein the low viscosity resin has a molecular weight of not greater than 300 Daltons and a viscosity of less than 30 cps at a temperature within the range of 15° C.-180° C.;
• (b) 40% to 50% by weight of a high viscosity epoxy resin component wherein the epoxy resin component is a cycloaliphatic epoxy resin selected from 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate and bis-(3,4-epoxycyclohexyl)adipate and wherein the high viscosity resin has a functionality of greater than or equal to 2 and a viscosity greater than twice the viscosity of the low viscosity reactive resin at a temperature within the range of 15° C.-180° C.;
• (c) 2% to 25% by weight of at least one curable toughener comprising a polymer or oligomer having a hydroxy, or acrylic group and a functionality of at least 2;
• (d) 0.5% to 10% by weight of at least one initiator;
• (e) 0.02% to 0.5% by weight of at least one stabilizer;
• (f) 0 to 10% by weight of a vinyl ether curable co-diluent;
• and
• (g) 0 to 25% by weight of one or more additives
• and wherein the low viscosity reactive resin is slower to react than the high viscosity resin.