SOFT CONTACT LENS MATERIAL WITH LOW VOLUMETRIC EXPANSION UPON HYDRATION
    2.
    发明申请
    SOFT CONTACT LENS MATERIAL WITH LOW VOLUMETRIC EXPANSION UPON HYDRATION 审中-公开
    在水合作用下具有低体积膨胀的软接触透镜材料

    公开(公告)号:WO2017083770A1

    公开(公告)日:2017-05-18

    申请号:PCT/US2016/061696

    申请日:2016-11-11

    Abstract: A hydrogel formulation has been developed that can be cast to form a hydrophilic cross-linked network with water content of 30-60% by weight that undergoes a volume expansion less than 5% when equilibrated in water or an aqueous solution of ionic species. This hydrogel formulation was used to cast a soft contact lens incorporating an insert that may be a sealed module filled with a fluid. Diameter of lenses cast without an insert measured within 0.5-5.0%) of the target diameter after hydration. The interface between the hydrogel and the insert in lenses cast with an insert remaining stress free after hydration, when the lens was inspected under a microscope. The formulation comprises and may consist of a mixture of hydrophilic mono-functional monomers, cross-linking agents, a photo-curing catalyst and a diluent.

    Abstract translation: 已经开发了一种水凝胶制剂,其可以浇注以形成水含量为30-60重量%的亲水性交联网络,其在水中平衡时经历小于5%的体积膨胀或 离子物质的水溶液。 使用该水凝胶制剂来铸造包含插入物的软性隐形眼镜,该插入物可以是填充有流体的密封模块。 在没有插入物的情况下铸造的透镜的直径在水合后在0.5-5.0%的目标直径内测量。 当透镜在显微镜下检查时,水凝胶和插入物之间的界面与水合后保持无应力的插入物一起铸造。 该制剂包含亲水性单官能单体,交联剂,光固化催化剂和稀释剂的混合物并可由其组成。

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