PROCESS FOR COATING ELECTRICALLY CONDUCTIVE SUBSTRATES AND AQUEOUS CATHODICALLY PRECIPITABLE ELECTRO DIPCOAT ENAMEL

摘要

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 SiO2 and 0 to 20% by weight of B2O3 and/or 0 to 20% by weight of WO3 and/or 0 to 20% by weight of MoO3 and/or 0 to 20% by weight of SnO2, the components being fused together using at least one of the cited oxides besides ZnO and SiO2 in such a manner that the percentages by weight always total 100.