Patent ID: 8124669
Filing Date: 2012-02-28
Classification: A61K,Y10S

Abstract:
1. A composition, comprising: a polymerizable monomer (a) comprising an aromatic ring and a hydroxyl group; a polymerizable monomer (b) comprising an aromatic ring and no hydroxyl groups; a polymerizable monomer (c) other than the polymerizable monomers (a) and (b); and alumina particles (d), wherein the composition comprises the polymerizable monomers (a), (b), and (c) in an amount of from 10 to 30% by weight, from 50 to 70% by weight, and from 10 to 30% by weight, respectively, of all the polymerizable monomers, wherein the alumina particles (d) satisfy requirements (i) and (ii): (i) a refractive index (n (ii) a proportion of particles having particle sizes of from 0.005 to 0.1 μm is 95% by number or more, and wherein a ratio of WA, a weight of the alumina particles (d), and WM, a total weight of the polymerizable monomers (a), (b), and (c), WA/WM, is from 1.5 to 2.5.