Amine-functionalized organosilane/fatty acid combination systems as stain/corrosion inhibitors for the application on aluminum and its alloys
AssigneeChemetall U.S., Inc.
InventorsHoon Kim, Ronald Ascenzo
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Abstract
Provided herein is a composition for treating aluminum containing surfaces, wherein the composition includes a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino group/s of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, and wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and/or at least one amide bond.
Claims6
A method for producing a composition for treating aluminum containing surfaces, the composition comprising a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino groups of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and by at least one amide bond, wherein the at least one fatty acid has at least 20 carbon atoms, wherein the at least one fatty acid has a hydrocarbon tail exhibiting at least one C═C double bond, and wherein at least about 5 mol-%, to about 15 mol-% of the linkages (detected by FT-IR spectroscopy) between the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and the at least one fatty acid are amide bonds;
- wherein the method comprises
- i) mixing the at least one amine-functionalized organosilane and at least one fatty acid in a molar ratio of 1.2:1 to 1:2 in an essentially water-free medium;
- ii) subjecting the mixture, under stirring for at least 15 minutes, to a temperature of at least room temperature, so that at least 5 mol-% of the linkages between the at least one amine-functionalized organosilane and the at least one fatty acid are amide bonds;
- and
- iii) combining the reaction product with other components, such that a composition for treating aluminum containing surfaces or a concentrate of such a composition is obtained.
A method for treating aluminum containing surfaces, the method comprising contacting an aluminum containing surface with a composition comprising a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino groups of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and by at least one amide bond, wherein the at least one fatty acid has at least 20 carbon atoms, wherein the at least one fatty acid has a hydrocarbon tail exhibiting at least one C═C double bond, and wherein at least about 5 mol-%, to about 15 mol-% of the linkages (detected by FT-IR spectroscopy) between the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and the at least one fatty acid are amide bonds.
A method for working metal, the method comprising contacting the metal with a composition comprising a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino groups of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and by at least one amide bond, wherein the at least one fatty acid has at least 20 carbon atoms, wherein the at least one fatty acid has a hydrocarbon tail exhibiting at least one C═C double bond, and wherein at least about 5 mol-%, to about 15 mol-% of the linkages (detected by FT-IR spectroscopy) between the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and the at least one fatty acid are amide bonds, as an essentially non-staining metal working fluid on the metal.
A method for inhibiting corrosion, the method comprising contacting an aluminum containing surface with a composition comprising a reaction product of at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and at least one fatty acid, wherein the molar ratio of the amino groups of the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and of the at least one fatty acid is 1.2:1 to 1:2, wherein the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof is linked to the at least one fatty acid by at least one carboxylic acid/amine salt bond and by at least one amide bond, wherein the at least one fatty acid has at least 20 carbon atoms, wherein the at least one fatty acid has a hydrocarbon tail exhibiting at least one C═C double bond, and wherein at least about 5 mol-%, to about 15 mol-% of the linkages (detected by FT-IR spectroscopy) between the at least one amine-functionalized organosilane and/or oligomer and/or polymer thereof and the at least one fatty acid are amide bonds, as a corrosion inhibitor for the aluminum containing surface.
Dependencies are inferred from the claim text.