Patent ID: 8889332

Claim:
A polymerizable composition comprising: a) an organic modified silicate selected from the group consisting of silsesquioxanes having the composition RSiO 1.5 , partially condensed alkoxysilanes, organically modified silicates having the composition RSiO 3 and R 2 SiO 2 , and partially condensed orthosilicates having the composition SiOR 4 , where each R is an organic substituent independently comprising (meth)acrylate, vinyl, or epoxide, and each partially condensed alkoxysilane comprises one or more pendant functional groups independently comprising (meth)acrylate, vinyl, or epoxide; b) a decomposable organic compound; c) a photoinitiator; and d) a release agent, wherein the composition polymerizes upon exposure to UV radiation to form an inorganic silica network, and the decomposable organic compound decomposes upon exposure to heat to form pores in the inorganic silica network.