Process for making silica-coated lead chromate pigments and product thereof
    1.
    发明授权
    Process for making silica-coated lead chromate pigments and product thereof 失效
    制备二氧化硅涂层的铬酸铅颜料及其制品的方法

    公开(公告)号:US3639133A

    公开(公告)日:1972-02-01

    申请号:US3639133D

    申请日:1970-10-23

    Applicant: DU PONT

    Inventor: LINTON HOWARD R

    Abstract: Silica-coated lead chromate pigments having improved stability in use under abrasive conditions are prepared by processes in which the lead chromate pigment particles, in a liquid slurry, are subjected to intense shear to break up agglomerates, and are thereafter coated with dense silica, optionally in combination with alumina.

    Abstract translation: 在磨料条件下使用时具有改善的稳定性的二氧化硅涂覆的铬酸铅颜料通过以下方法制备,其中在液体浆料中的铬酸铬颜料颗粒经受强烈的剪切以破坏附聚物,然后任选地用致密二氧化硅 与氧化铝组合。

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