[EN] NON-TOXIC CORROSION-PROTECTION PIGMENTS BASED ON MANGANESE<br/>[FR] PIGMENTS ANTI-CORROSION NON TOXIQUES A BASE DE MANGANESE
申请人:UNIV DAYTON
公开号:WO2004065305A1
公开(公告)日:2004-08-05
Corrosion-inhibiting pigments based on manganese are described that contain a trivalent or tetravalent manganese/valence stabilizer complex. An inorganic or organic material is used to stabilize the trivalent or tetravalent manganese ion to form a compound that is sparingly soluble, exhibits low solubility, or is insoluble in water, depending upon the intended usage. Specific stabilizers are chosen to control the release rate of trivalent or tetravalent manganese during exposure to water and to tailor the compatibility of the powder when used as a pigment in a chosen binder system. Stabilizers may also modify the processing and handling characteristics of the formed powders. Manganese/valence stabilizer combinations are chosen based on the wellfounded principles of manganese coordination chemistry. Many manganese-valence stabilizer combinations are presented that can equal the performance of conventional hexavalent chromium or tetravalent lead systems.