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    • 1. 发明授权
    • Silica-magnesium fluoride hydrate composite sols and process for their preparation
    • 二氧化硅 - 氟化镁水合物复合溶胶及其制备方法
    • US06291535B1
    • 2001-09-18
    • US09455928
    • 1999-12-07
    • Yoshitane WatanabeKeitaro SuzukiOsamu TanegashimaYoshinari Koyama
    • Yoshitane WatanabeKeitaro SuzukiOsamu TanegashimaYoshinari Koyama
    • B01F312
    • B82Y30/00C01B33/14C01F5/28C01P2004/50C01P2004/64
    • A sol comprising silica-magnesium fluoride hydrate composite colloidal particles used in an anti-reflection coating material for forming an anti-reflection coating and a process for its preparation are provided. A sol comprising silica-magnesium fluoride hydrate composite colloidal particles having a ratio of silica to magnesium fluoride hydrate MgF2.nH2O, n being in the range between 0.25 and 0.5, in terms of a SiO2/MgF2 weight ratio of from 0.01 to 5 and a primary particle size of 5 to 50 nm. A process for the preparation of an aqueous sol comprising silica-magnesium fluoride hydrate composite colloidal particles which comprises the steps of adding an aqueous fluoride solution to a mixture liquid of a silica sol and an aqueous magnesium salt solution to produce a slurry of an agglomerate comprising silica-magnesium fluoride hydrate composite colloidal particles and removing the salts formed as by-products. A process for the preparation of an organosol further comprising the step of replacing water in the aqueous sol with an organic solvent.
    • 提供一种包含用于形成抗反射涂层的防反射涂层材料中的二氧化硅 - 氟化镁水合物复合胶体颗粒及其制备方法。 包含二氧化硅 - 氟化镁水合物复合胶体粒子的溶胶,SiO 2 / MgF 2重量比为0.01〜5,二氧化硅与氟化镁水合物的比例为MgF 2·nH 2 O,n为0.25〜0.5的范围, 一次粒径为5〜50nm。 一种制备包含二氧化硅 - 氟化镁水合物复合胶体颗粒的水性溶胶的方法,包括以下步骤:向二氧化硅溶胶和镁盐水溶液的混合液中加入氟化钠水溶液,以产生附聚物的浆料,其包含 二氧化硅 - 氟化镁水合物复合胶体颗粒并除去作为副产物形成的盐。 一种制备有机溶胶的方法,还包括用有机溶剂代替水溶胶中的水的步骤。