Coating compositions exhibiting corrosion resistance properties, related coated substrates, and methods
First Claim
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1. A method for enhancing the corrosion resistance of a substrate comprising an aluminum alloy, the method comprising coating at least a portion of the substrate with a composition comprising:
- (a) a film-forming resin;
(b) particles comprising magnesium oxide, wherein said particles have an average primary particle size of no more than 100 nanometers; and
(c) an alkoxy-monosilane compound.
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Abstract
Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.
67 Citations
29 Claims
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1. A method for enhancing the corrosion resistance of a substrate comprising an aluminum alloy, the method comprising coating at least a portion of the substrate with a composition comprising:
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(a) a film-forming resin; (b) particles comprising magnesium oxide, wherein said particles have an average primary particle size of no more than 100 nanometers; and (c) an alkoxy-monosilane compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A substrate comprising an aluminum alloy, wherein the substrate is at least partially coated with a primer coating comprising:
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(a) a film-forming resin; (b) particles comprising magnesium oxide, wherein said particles have an average primary particle size of no more than 100 nanometers; (c) an alkoxy-monosilane compound. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for coating a metal substrate comprising an aluminum alloy, the method comprising depositing a coating directly to at least a portion of the metal substrate, the coating being deposited from a composition comprising:
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(a) a film-forming resin; (b) particles comprising magnesium oxide, wherein said particles have an average primary particle size of no more than 100 nanometers; and (c) an alkoxy-monosilane compound wherein the aluminum alloy comprises (i) 90.7 to 94.7 weight percent aluminum; (ii) 3.8 to 4.9 weight percent copper; (iii) 1.2 to 1.8 weight percent magnesium; and (iv) 0.3 to 0.9 weight percent manganese. - View Dependent Claims (25, 26, 27, 28)
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29. A method for coating an aluminum alloy substrate, the method comprising depositing a coating directly to at least a portion of the aluminum alloy substrate, the coating being deposited from a composition comprising:
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(a) a film-forming resin; (b) particles comprising magnesium oxide, wherein said particles have an average primary particle size of no more than 100 nanometers; and (c) an alkoxy-monosilane compound; wherein the composition is free of phosphoric acid.
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Specification