HIGH OXYGEN-DIFFUSION TRANSPARENT POSS MATERIALS COMPRISING A BIFUNCTIONAL POSS

A new class of silicone monomers has been developed that provide a transparent material and impart hydrophilic properties. These materials are introduced into ophthalmic devices, such as flexible gas permeable and rigid gas permeable (RGP) contact lenses. These new silicone monomers include a polyhedral oligomeric silsesquioxane (POSS) having two polymerizable groups and six organic functional groups. These types of structures incorporate at least two available polymerization sites, allowing the introduction of a silsesquioxane cage into the backbone of the macromolecule. Other functional group sites allow for the design of specific chemical properties to meet the desired material performance. 已开发了一类新的有机硅单体，所述有机硅单体提供透明材料并赋予亲水性能。这些材料被引入眼科装置中，例如柔性透气性和硬性透气性(RGP)隐形眼镜。这些新的有机硅单体包括具有两个可聚合基团和六个有机官能团的多面体低聚倍半硅氧烷(POSS)。这些类型的结构引入了至少两个可利用的聚合位点，允许将倍半硅氧烷笼引入大分子的主链中。其他的官能团位点允许设计特定的化学特性，以满足所需的材料性能。