申请人:Menicon Co., Ltd.
公开号:EP2174966A1
公开(公告)日:2010-04-14
An optical material obtained by using metal oxide nanoparticles is provided which has a high refractive index while securing excellent transparency and oxygen permeability. Further, an ophthalmic lens such as a contact lens or an intraocular lens is provided by using the same. The optical material is obtained by polymerizing a monomer composition comprising at least one polymerizable unsaturated bond-containing monomer in which metal oxide nanoparticles, which have previously been modified by silane coupling agents, are uniformly dispersed, while maintaining a stable dispersion of the metal oxide nanoparticles.
本发明提供了一种通过使用金属氧化物纳米颗粒获得的光学材料,该材料具有高折射率,同时还具有出色的透明度和透氧性。此外,还提供了一种眼科透镜,如隐形眼镜或眼内透镜。该光学材料是通过聚合一种单体组合物获得的,该单体组合物包含至少一种可聚合的含不饱和键单体,在该单体组合物中均匀地分散着之前用硅烷偶联剂修饰过的金属氧化物纳米颗粒,同时保持金属氧化物纳米颗粒的稳定分散。