PHOTOPOLYMERIZABLE COMPOSITION SENSITIVE TO LIGHT IN A GREEN TO INFRARED REGION OF THE OPTICAL SPECTRUM

摘要

The invention is concerned with a photopolymerizable composition sensitive to light in a green to infrared region of the optical spectrum, comprising (a) a photopolymerizable monomer or oligomer, or a mixture thereof, capable of forming a polymer having predetermined optical properties; (b) a photoinitiator sensitive to light in the aforesaid region; (c) an additive for increasing the refractive index and decreasing the viscosity of the composition; and (d) a filler having optical properties selected to contrast with the optical properties of the polymer. The composition of the invention is particularly useful for producing holographic polymer dispersed liquid crystal materials and reversible dye doped polymer materials having improved electrical and optical switching characteristics.