| abstract |
The present invention relates to a sclerosing fluorenone composition comprising: (A) an organopolyoxane represented by an average unit formula; (B) an organopolyoxane having 10 or less cesium atoms, wherein all combinations 30 mol% to 60 mol% of the organic group of the halogen atom is an alkenyl group having 2 to 6 carbons; (C) an organopolyoxane represented by the formula; (D) having one molecule At least two organic polyoxoxanes bonded to a hydrogen atom of a halogen atom, wherein the phenyl content of all organic groups bonded to the ruthenium atom in the composition is from 20 mol% to 70 mol%; (E) by averaging a unit represented by an organopolyoxane; (F) a hydrogenation reaction catalyst; (G) a white pigment; and (H) an inorganic filler other than a white pigment, the hardenable anthrone composition having a hardened product Excellent formability, the hardened product hardly causes discoloration due to heat and light, and has reduced mechanical strength, has a high light reflectance, has excellent dimensional stability, and can be well adhered by a sealant for an optical semiconductor device. |