| abstract |
[Problem] To provide a new light diffusing material that exhibits superior light transmittance, light diffusion, and mechanical properties. [Solution] A material according to the present invention is formed from a curable organopolysiloxane composition and a cured product obtained therefrom, the composition containing the following components A-C: A) an organopolysiloxane that has, in a molecule thereof, at least two radical reactive groups and/or reactive groups that can be cross-linked by means of a hydrosilylation reaction, and in which aryl groups account for less than 0-10 mol% of all the organic groups bonded to silicon atoms in the molecule; B) one or more types of inorganic fillers; and C) one or more types of organic silicon compounds that are different from the component A and that are selected from the group consisting of C1 and C2, wherein C1 is an organic silicon compound that is different from the component A and that has, in a molecule thereof, a reactive functional group that can bond with the reactive groups in the component A, a hydrolyzable silyl group and/or a silicon-atom-bonding hydroxyl group, and two or more silicon atoms, and C2 is an organic silicon compound that is different from the component A and that has, in a molecule thereof, a reactive functional group that can bond with the reactive groups in the component A and that has three or more carbon atoms, a hydrolyzable silyl group and/or a silicon-atom-bonding hydroxyl group, and one or more silicon atoms. In the composition, the mass of the component B is 30-95% with respect to the total mass of the composition. The material exhibits superior properties in terms of light transmittance, light diffusion, and so forth. |