Treatment of metal parts to provide rust-inhibiting coatings
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United States of America Patent
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Feb 18, 1997
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N/A
app pub date -
Dec 8, 1995
filing date -
Oct 30, 1992
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Abstract
The invention describes a method of producing an adherent and corrosion-inhibiting multi-layer coating on metal parts comprising the steps of (A) phosphating the metal parts with an aqueous metal phosphating solution; (B) electrophoretically depositing a film of a siccative organic coating composition on the phosphated metal parts; (C) applying a second film of a composition comprising at least one film-forming organic resin component as a seal coat; (D) curing the coating on the metal parts; and optionally (E) applying a corrosion-inhibiting film as a top seal coat.
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