Autophoretic primers

Autophoretic primers are novel, water-borne primers and are based on aqueous dispersions (3-5% volume solids) of either acrylic or polyvinylidene chloride (PVDC) polymers. They are used to coat ferrous metal components, such as automotive brake parts, in a dip coating process. The coating is acidic (pH 2.5-3.S) and contains an oxidizing agent, usually hydrogen peroxide. Firmly adherent films (7-25 xm in thickness), with good corrosion resistance, can be achieved. 

Other related articles discuss Pre-treatment of metals prior to painting, Paint primers in general and Autophoretic primers. 

Specialist primers are Autophoretic primers aud Etch primers, both of which react chemically with the metal surface to achieve a good bond. 

Autophoretic primers N WHITEHOUSE Aqueous dispersions containing acids that deposit corrosion-resistant films... 

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