| abstract |
PROBLEM TO BE SOLVED: To provide an optical material that has a low viscosity even when a large amount of zirconium oxide particles and an organosilicon compound are blended, can suppress yellowing, and forms a high refractive index resin excellent in transparency and heat resistance. A resin composition is provided. [Solution] It contains zirconium oxide particles having an average particle diameter of 1 to 30 nm, a dispersant composed of a compound represented by the following formula (1), an organosilicon compound, and a compound having a polymerizable unsaturated group. It is a resin composition for optical materials. In the formula (1), R is a branched chain alkyl group and / or alkenyl group having 3 to 24 carbon atoms, AO is an oxyalkylene group having 1 to 4 carbon atoms, and n is an alkylene group It is a numerical value in the range of 3-30 which shows the average addition mole number of an oxide, and X is a coupling group which consists of a carbon atom, a hydrogen atom, and / or an oxygen atom. [Chemical 1] [Selection figure] None |