Process for preparing water resistant luminous pigments
    3.
    发明授权
    Process for preparing water resistant luminous pigments 有权
    防水发光颜料的制备工艺

    公开(公告)号:US06264855B1

    公开(公告)日:2001-07-24

    申请号:US09445797

    申请日:1999-12-10

    IPC分类号: C09K1108

    摘要: A process for preparing a water resistant luminous pigment with durability, characterized in that a luminous pigment, in which an oxide matrix comprising at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn and at least one element selected from the group consisting of B, Al, P and Ga is doped with at least one rare-earth metal element, is allowed to an acid treatment under the condition of pH of not more than 3 using at least one acidic compound selected from the group consisting of acids and acid generating compounds, and is subsequently allowed to an alkaline treatment under the condition of pH 4-9 using at least one alkaline compound selected from the group consisting of alkalis and alkali generating compounds.

    摘要翻译: 一种具有耐久性的防水发光颜料的制备方法,其特征在于,其中含有选自Mg,Ca,Sr,Ba和Zn中的至少一种元素的氧化物基质和选自至少一种元素的发光颜料 从由B,Al,P和Ga组成的组中掺杂有至少一种稀土金属元素,在pH不大于3的条件下使用至少一种选自以下的酸性化合物进行酸处理 由酸和酸产生化合物组成,随后在pH 4-9的条件下使用至少一种选自碱和碱产生化合物的碱性化合物进行碱处理。