C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 13/10 (2006.01) C09D 5/08 (2006.01) C09D 5/44 (2006.01)
Patent
CA 2081661
The invention relates to aqueous electrocoating paints which contain 2 to 10% by weight of an anti- corrosive 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 amino- silane, the percentages by weight being based on the total solids content of the electrocoating paint and the anti- corrosive 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.
Arlt Klaus
Heilmann Ulrich
Heimann Ulrich
Hoffmann Udo
Ruhl Dieter
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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