CORROSION-RESISTANT PIGMENT

摘要

PURPOSE:To obtain a corrosion-resistant pigment of phosphoric acid type to be added to coating compounds or lining materials, having an action to effectively prevent release of film liable to occur in an alkali range in corrosion, consisting of pigment of phosphoric acid treated with an aqueous solution containing iron ion. CONSTITUTION:The aimed corrosion-resistant pigment consisting of pigment of phosphoric acid type treated with an iron ion-containing aqueous solution (preferably aqueous solution of soluble iron pyrophosphate).