Passivating of tin, zinc and steel surfaces
AssigneeSanchem, Inc.
InventorJohn W. Bibber
Life of this patent
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Abstract
A method for coating zinc, zinc plated, or steel articles with a hydroxy benzoic acid protective coating by coating a cleaned zinc, zinc plated, or steel with a hydoxy benzoic acid composition having a pH of about 2.0 to 5.0; and coating cleaned tin surfaced articles with a composition having a PH of 2.0 to 12.0, and the composition having as its essential ingredients proteins, amino acids, amino acid—protein compounds and amine alcohols; and the articles produced thereby along with the coated articles having an appropriate paint thereon.
Claims20
A method for coating a zinc, zinc plated, or steel article with a protective coating comprising coating a cleaned zinc, zinc plated, or steel article with a composition having a PH of 2.0 to about 5.0, and said composition having as its essential compound a hydroxy benzoic acid.
A passified zinc, zinc plated, or steel article having coated thereon a hydroxy benzoic acid composition wherein the hydroxy benzoic acid composition will allow the article to be painted with an appropriate paint.
A method of coating an article having a tin surface with a protective coating comprising coating a cleaned tin surface article with a composition having a PH of 2.0 to 12.0, and said composition having as its essential ingredients proteins, amino acids, amino acid—protein compounds and amine alcohols.
A passified tin surfaced article having coated thereon a composition having as its essential ingredients proteins, amino acids, amino acid—protein compounds and amine alcohols wherein composition will allow the article to be painted with an appropriate paint.
Dependencies are inferred from the claim text.