Pavement markings containing transparent non-vitreous ceramic
microspheres
    3.
    发明授权
    Pavement markings containing transparent non-vitreous ceramic microspheres 失效
    路面标记包含透明非玻璃陶瓷微球

    公开(公告)号:US4758469A

    公开(公告)日:1988-07-19

    申请号:US35989

    申请日:1987-04-08

    申请人: Roger W. Lange

    发明人: Roger W. Lange

    摘要: Pavement marking comprising ceramic microspheres held by a binder, said microspheres being solid, transparent, non-vitreous, ceramic particles which serve as lens elements in the retroreflective pavement markings. The ceramic microspheres formed by various sol gel techniques are characterized by having:A. at least one metal oxide phase; andB. an average minimum dimension of up to 125 micrometers.The inventive pavement markings retain reflectivity for a surprisingly long time.

    摘要翻译: 路面标记包括由粘合剂保持的陶瓷微球体,所述微球体是固体,透明,非玻璃质陶瓷颗粒,其用作回射路面标记中的透镜元件。 通过各种溶胶凝胶技术形成的陶瓷微球的特征在于具有:A.至少一种金属氧化物相; 和B.平均最小尺寸高达125微米。 本发明的路面标记保持了令人惊讶的长时间的反射率。

    Transparent non-vitreous zirconia microspheres
    6.
    发明授权
    Transparent non-vitreous zirconia microspheres 失效
    透明非玻璃状氧化锆微球

    公开(公告)号:US4772511A

    公开(公告)日:1988-09-20

    申请号:US800688

    申请日:1985-11-22

    摘要: Solid, transparent, non-vitreous, zirconia and zirconia-silica ceramic microspheres, useful as lens elements in retroreflective pavement markings. The microspheres are characterized by:(a) containing at least one additive metal oxide selected from alumina, magnesia, yttria and mixtures thereof;(b) an index of refraction greater than 1.6; and(c) being virtually free of cracks.These microspheres are formed by a sol-gel technique of extractive gelation (extracting carboxylic acid away from zirconyl carboxylate) of a sol in liquid medium such as hot peanut oil. The microspheres of this ceramic composition have been made with relatively large diameters, (e.g. 200-1000 micrometers) making them quite useful as lens elements in pavement marking sheet materials.

    摘要翻译: 固体,透明,非玻璃状,氧化锆和氧化锆 - 二氧化硅陶瓷微球,可用作回射路面标记中的透镜元件。 微球的特征在于:(a)含有至少一种选自氧化铝,氧化镁,氧化钇及其混合物的添加剂金属氧化物; (b)折射率大于1.6; 和(c)几乎没有裂缝。 这些微球体是通过在液体介质如热花生油中的溶胶的萃取凝胶化(从羧酸氧锆中提取羧酸)的溶胶 - 凝胶技术形成的。 这种陶瓷组合物的微球已经制造成具有相对大的直径(例如200-1000微米),使得它们在路面标记片材料中作为透镜元件非常有用。