Curable resins and articles made therefrom
Optical devices of excellent optical and physical properties produced from cured resins are disclosed. The resins and/or the cured hybrid polymer material made with the resins are characterized by a high level of cycloaliphatic-containing groups. Specific additives that can participate in crosslinking the curable polysiloxane provide additional physical property advantages.
1. An optical device comprising a cured solid hybrid polymer comprising the reaction product of
about 70% by weight of a photocurable and/or thermally curable resin comprising (meth)acrylate or siloxane monomers, at least 50% of which includes at least one cycloaliphatic group;
an initiator in an amount of between about 0.1 and 2.5% by weight;
about 15% by weight of a hydroxyoxetane; and
about 15% by weight of a diglycidyl ether based on the final cured solid hybrid polymer, wherein the optical device has a refractive index of 1.48 or more, an Abbe number of 45 or more, a low cure shrinkage of less than about 3%, and a high fracture toughness.