UV-absorbing coatings and methods of making the same
    5.
    发明申请
    UV-absorbing coatings and methods of making the same 失效
    紫外线吸收涂料及其制造方法

    公开(公告)号:US20060040108A1

    公开(公告)日:2006-02-23

    申请号:US10922235

    申请日:2004-08-20

    摘要: Methods of forming UV-absorbent transparent coatings and transparent substrates coated with the same allow for a relatively lower temperature cross-linkage reaction between a UV-absorbent compound and an epoxy-alkoxysilane. More specifically, UV-absorbent coatings on transparent substrates are formed by prepolymerizing a mixture consisting essentially of a benzophenone, an epoxy alkoxysilane and an organic catalyst at a temperature of between about 40° C. to about 130° C. and for a time sufficient such that between about 30% to about 70% of the epoxy alkoxysilane has been converted to a ring-opened oligomer or polymer. Such prepolymerized mixture may then be hydrolyzed and coated onto the surface of a transparent substrate, and thereafter cured at a temperature of less than about 200° C. for a time sufficient to cross-link the hydrolyzed alkoxysilane with itself and the glass surface. Most preferably, the prepolymerized mixture is hydrolyzed prior to being coated onto the substrate in an acidic alcoholic solution. Preferred for use in the present invention as a UV-absorbent compound is tetrahydroxybenzophenone. The preferred epoxy alkoxysilane is 3-glycidoxypropyl trimethoxysilane. It is especially preferred that prepolymerization be effected in the presence of an organic catalyst, such as triethylamine (TEA).

    摘要翻译: 形成紫外线吸收透明涂层的方法和用其涂布的透明基材允许UV吸收化合物和环氧烷氧基硅烷之间的相对较低温度的交联反应。 更具体地,在透明基材上的UV吸收涂层通过在约40℃至约130℃的温度下预聚合基本上由二苯甲酮,环氧烷氧基硅烷和有机催化剂组成的混合物而形成,并持续足够的时间 使得约30%至约70%的环氧烷氧基硅烷已经转化为开环的低聚物或聚合物。 然后将这样的预聚合的混合物水解并涂覆在透明基材的表面上,然后在小于约200℃的温度下固化足够的时间,使其水解的烷氧基硅烷与其自身和玻璃表面交联。 最优选地,将预聚合的混合物在用酸性醇溶液涂覆在基材上之前水解。 作为UV吸收剂化合物优选用于本发明的是四羟基二苯甲酮。 优选的环氧烷氧基硅烷是3-缩水甘油氧基丙基三甲氧基硅烷。 特别优选的是,在有机催化剂如三乙胺(TEA)的存在下进行预聚合。

    Ultraviolet transmissive polyhedral silsesquioxane polymers
    7.
    发明申请
    Ultraviolet transmissive polyhedral silsesquioxane polymers 有权
    紫外线透射多面体倍半硅氧烷聚合物

    公开(公告)号:US20060122351A1

    公开(公告)日:2006-06-08

    申请号:US11075042

    申请日:2005-03-08

    IPC分类号: C08G77/12 C08G77/04

    摘要: Inorganic/organic hybrid polymers containing silsesquioxane cages are robust and exhibit desirable physical properties such as strength, hardness, and optical transparency at infrared and ultraviolet wavelengths. The polymers are prepared by polymerizing functionalized polyhedral silsesquioxane monomers such as polyhedral silsesquioxanes bearing two complementarily reactive functional groups bonded to cage silicon atoms by means of spacer moieties. The spacer moieties allow for steric mobility and more complete cure than polyhedral silsesquioxanes bearing reactive functional groups bound directly to cage silicon atoms.

    摘要翻译: 含有倍半硅氧烷笼的无机/有机杂化聚合物是牢固的并且表现出期望的物理性质,例如红外和紫外线波长下的强度,硬度和光学透明度。 聚合物是通过聚合功能化的多面体倍半硅氧烷单体制备的,例如通过间隔基部分带有两个与笼状硅原子键合的互补反应性官能团的多面体倍半硅氧烷。 间隔基部分允许空间移动和更完全的固化比承载反应性官能团直接结合到笼状硅原子的多面体倍半硅氧烷。