18 ноября, 2015 
Pokraskin This is mainly used to manufacture wash primers based on poly(vinyl butyral) resin, which is popularly used on aluminum or galvanized iron. Their main purpose is passivating the surface and improving adhesion of subsequent coatings. They are applied at very low solids to give a very thin film. Due to toxicity of hexavalent chromium, these primers are being replaced by new-generation thin films, typically sol-gel-derived organic-inorganic hybrid systems.
This yellow anticorrosive pigment is among the most expensive chromate-based pigments. It is mainly used to protect aluminum from corrosion. Epoxy primers containing strontium chromate are well-accepted in the aircraft industry. They are effective at low pigment levels and are also used in some coil coating applications.
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