Process for the coating of electrically conductive substrates and a
cathodically depositable aqueous electrocoating paint
    1.
    发明授权
    Process for the coating of electrically conductive substrates and a cathodically depositable aqueous electrocoating paint 失效
    用于涂覆导电基材和阴极可沉积的水性电涂料的方法

    公开(公告)号:US5338434A

    公开(公告)日:1994-08-16

    申请号:US946374

    申请日:1993-01-11

    CPC classification number: C09D5/084 C09D5/4492

    Abstract: The invention relates to aqueous electrocoating paints which contain 2 to 10% by weight of an anticorrosive pigment based on zinc silicate in combination with 1 to 15% by weight of a very fine quartz powder or cristobalite powder coated with epoxysilane or aminosilane, the percentages by weight being based on the total solids content of the electrocoating paint and the anticorrosive pigment being preparable by fusing together 35 to 65% by weight of ZnO, 15 to 35% by weight of SiO.sub.2 and 0 to 20% by weight of B.sub.2 O.sub.3 and/or 0 to 20% by weight of WO.sub.3 and/or 0 to 20% by weight of MoO.sub.3 and/or 0 to 20% by weight of SnO.sub.2, the components being fused together using at least one of the cited oxides besides ZnO and SiO.sub.2 in such a manner that the percentages by weight always total 100.

    Abstract translation: PCT No.PCT / EP91 / 00803 Sec。 371日期:1993年1月11日 102(e)日期1993年1月11日PCT 1991年4月25日PCT PCT。 出版物WO91 / 18063 日本1991年11月28日。本发明涉及水性电涂漆,其含有2至10重量%的基于硅酸锌的防腐颜料与1至15重量%的非常细的石英粉末或方英石粉末涂覆 环氧硅烷或氨基硅烷,其重量百分比基于电涂料的总固体含量和抗腐蚀颜料,其可通过将35至65重量%的ZnO,15至35重量%的SiO 2和0至20重量% 的B 2 O 3和/或0至20重量%的WO 3和/或0至20重量%的MoO 3和/或0至20重量%的SnO 2,所述组分使用所引用的至少一种 除了ZnO和SiO 2之外的氧化物,其重量百分比总是总共为100。

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