Abstract: Disclosed is a method of using a high molecular mass, saturated hydrocarbon acid to generate a chemical conversion coating on light metal surfaces such as aluminum, magnesium, and titanium and their alloys.

Abstract: An electroless plating bath composition of matter and corresponding method are described. The plating bath is an aqueous solution including an amino acid having at least one amino moiety and at least one carboxylic acid moiety or a polypeptide thereof, and having a molar ratio of amino moieties to carboxylic acid moieties of 1 or greater, a nickel-containing or a cobalt-containing salt, and a boron-containing reducing agent. The composition of matter is used in a method of electroless nickle-boron and cobalt-boron coating of substrates.

Abstract: A method to inhibit corrosion of a substrate. The method includes the steps of contacting a metallic substrate with an aqueous solution comprising permanganate ions and silicate ions, for a time and a temperature sufficient to deposit a corrosion-inhibiting coating on the metallic substrate.

Abstract: An electroless plating bath composition of matter and corresponding method are described. The plating bath is an aqueous solution including an amino acid having at least one amino moiety and at least one carboxylic acid moiety or a polypeptide thereof, and having a molar ratio of amino moieties to carboxylic acid moieties of 1 or greater, a nickel-containing or a cobalt-containing salt, and a boron-containing reducing agent. The composition of matter is used in a method of electroless nickle-boron and cobalt-boron coating of substrates.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of magnesium, magnesium alloy, beryllium and beryllium alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of aluminum and aluminum alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of aluminum and aluminum alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of magnesium, magnesium alloy, beryllium and beryllium alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

Abstract: An electrolyte composition for passifying tin plated steel wherein the essential ingredient consists of a mixture of organic hydroxyl acids and phenol organic acids; a method of passifying tin plate steel articles with the composition by electrolysis with a pH of about 7.0-10.0 and preferably a pH of 8.0-9.5; and providing the passified tin plated steel article produces by the method along with the passified articles having an appropriate paint thereon.

Abstract: An electrolyte composition for passifying tin plated steel wherein the essential ingredient consists of a mixture of organic hydroxyl acids and phenol organic acids; a method of passifying tin plate steel articles with the composition by electrolysis with a pH of about 7.0-10.0 and preferably a pH of 8.0-9.5; and providing the passified tin plated steel article produces by the method along with the passified articles having an appropriate paint thereon.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of magnesium, magnesium alloy, beryllium and beryllium alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

Abstract: I provide a non-toxic protein and protein compound conversion coated metal article, a painted or plated non-toxic protein and protein compound conversion coated metal article, the aqueous coating solution to provide the in-situ conversion protective coating, and a process of preparing the article. The article is a metal selected from the group consisting of aluminum and aluminum alloy. The solution has a pH of 3.0 to 12.0 and preferably 4.0 to 10.0 and a protein and protein compound concentration of 0.1 to 10% by weight and the protein and protein compound have a molecular mass of 16,700 to 1,000,000.

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.

Abstract: I provide an aqueous coating composition to provide an outer protective coating for a metal selected from the group consisting of an aluminum, aluminum alloy, iron, iron alloy, zinc, zinc alloy, zinc coated iron, zinc coated iron alloy, and these metals and magnesium and magnesium alloys having a conversion coating thereon. The aqueous coating composition consists essentially of 60 to 90 parts by weight water, 0.5 to 10 parts by weight of a polyvinyl alcohol having a weight average molecular weight of at least 100,000 and being at least 95% hydrolyzed, 0.5 to 20 parts by weight of a polybasic acid or anhydride, and 0.0 to 3 parts by weight of a cross-linking agent or plasticizer to form a in-situ polyester conversion coating on the metal. The composition is applied directly to the metal or to the metal article which has a non-chromium conversion coating thereon and forms a thin film thereon. Then the metal with the film thereon is heated to between 300° to 550° F.

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.

Abstract: A non-chromium based magnesium conversion coating composition for coating magnesium or a magnesium alloy articles, which has as the essential ingredients, an alkali metal permanganate and a PH of 2.5 to 4.0. The composition is effective in protecting magnesium and magnesium alloys articles for more than 200 hours of a neutral salt-fog at 95° F. according to ASTM standard method B-117. When the coated magnesium or a magnesium alloy articles are primed with a paint and the painted articles are exposed to the salt-fog there are show no signs of blistering visible to the naked eye. The process of coating the magnesium or magnesium alloy articles is generally carried out by cleaning the magnesium or magnesium alloy articles with a mild alkaline cleaner followed by treatment in a mild acid solution to remove unwanted metal oxides or hydroxides and then conversion coating with the permanganate salt composition at PH of from 2.5 to 4.0.

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.

Abstract: A method for coating zinc or zinc plated article with a polymerized molybdate protective coating by coating a cleaned zinc or zinc plated article with a chromium-free polymerized molybdate composition having a pH of about 1.0 to 5.0. A passified zinc or zinc plated article having coated thereon a polymerized molybdate composition that will allow the article to be painted with an appropriate paint.

Abstract: The present invention provides a method of coating a tin article with a non-hexavelant trivcalent chromium oxide and/or hydoxide in which the tin article is contacted with a trivalent chromium protective coating composition having an acid pH of about 2.0 to 3.0 which is free of chromium complexing agents.

Abstract: I provide an outer anti-corrosion aluminum or aluminum alloy protective coating composition. The composition may be applied directly to the aluminum or aluminum alloy or to an anodized form thereof or to an anodized or non-anodized aluminum or aluminum article which has a non-chromium conversion coating therein. The outer protective coating composition contains as essential ingredients an aqueous emulsion of a polybasic acid, a polyol and a lanolin wax acid which react in-situ on the article. Also, I provide the aluminum or aluminum alloy article having thereon an outer layer of an anti-corrosive lanolin wax polyester coating and a method of forming an anti-corrosion layer on the outer surface of the article.