Siegle have introduced three anti‐corrosion pigments onto the market — Silcor O and Silcor EC, Silcorphos 20, 02 and 00 and Leadcoat D4. In the development of Silcor O and Silcor EC, Siegle has combined the resistance of plumbiferous rust‐protection pigments against corrosive influence, with the protective characteristics of active chromate pigments. As their names indicate, the chemical and electro‐chemical active components of the pigments have been united with a light inert nucleus. Economical advantages result from the low specific gravity (D= 4·2). Both types are distinguished by their small particle size (80% <3µm). Silcor O is suitable for most binding agents containing solvents, while Silcor EC has been developed for use in aqueous binders, with good performance in electro‐coating varnishes.
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