Coating compositions exhibiting corrosion resistance properties and related coated substrates
First Claim
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1. A method for enhancing the corrosion resistance of a substrate comprising aluminum, the method comprising coating at least a portion of the substrate with a composition comprising:
- (a) a thermosetting film-forming resin comprising a polyamine and an epoxy functional polymer; and
(b) corrosion resisting particles comprising magnesium oxide articles having a surface area of at least 10 square meters per gram, wherein the magnesium oxide particles have an average particle size of no more than 50 nanometers.
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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.
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Citations
29 Claims
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1. A method for enhancing the corrosion resistance of a substrate comprising aluminum, the method comprising coating at least a portion of the substrate with a composition comprising:
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(a) a thermosetting film-forming resin comprising a polyamine and an epoxy functional polymer; and (b) corrosion resisting particles comprising magnesium oxide articles having a surface area of at least 10 square meters per gram, wherein the magnesium oxide particles have an average particle size of no more than 50 nanometers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for enhancing the corrosion resistance of a substrate comprising aluminum, the method comprising coating at least a portion of the substrate with a composition comprising:
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(a) a thermosetting film-forming resin comprising a polyamine and an epoxy functional polymer; and (b) corrosion resisting particles comprising magnesium oxide particles having a surface area of at least 10 square meters per gram and an average primary particle size of no more than 200 nanometers.
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11. A method for enhancing the corrosion resistance of a substrate comprising aluminum, the method comprising coating at least a portion of the substrate with a composition comprising:
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(a) a thermosetting film-forming resin comprising a polyamine and an epoxy functional polymer; and (b) corrosion resisting particles comprising magnesium oxide particles having a surface area of at least 10 square meters per gram; wherein the substrate further comprises a chromate conversion coating.
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12. A substrate comprising aluminum at least partially coated with a primer coating comprising:
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(a) a thermoset film-forming resin comprising a polyamine and an epoxy functional polymer; and (b) magnesium oxide particles having a surface area of at least 10 square meters per gram and an average particle size of no more than 50 nanometers; wherein the magnesium oxide particles are dispersed in the thermoset film-forming resin. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A substrate comprising aluminum at least partially coated with a primer coating comprising:
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(a) a thermoset film-forming resin comprising a polyamine and an epoxy functional polymer; (b) magnesium oxide particles having a surface area of at least 10 square meters per gram and an average primary particle size of no more than 200 nanometers wherein the magnesium oxide particles are dispersed in the thermosetting film-forming resin.
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22. A substrate comprising aluminum at least partially coated with a primer coating comprising:
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(a) a thermoset film-forming resin comprising a polyamine and an epoxy functional polymer; and (b) magnesium oxide particles having a surface area of at least 10 square meters per gram; wherein the magnesium oxide particles are dispersed in the thermoset film-forming resin; and wherein the substrate further comprises a chromate conversion coating.
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23. A primer and/or pretreatment coating composition, comprising;
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(a) a polyacrylate, wherein the polyacrylate comprises a urethane acrylate; (b) a polythiol; and (c) corrosion resisting particles comprising magnesium oxide particles having a surface area of at least 10 square meters per gram, and an average particle size of no more than 50 nanometers. - View Dependent Claims (24, 25, 26, 27)
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28. A primer and/or pretreatment coating composition comprising:
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(a) a polyacrylate, wherein the polyacrylate comprises a urethane acrylate; (b) a polythiol; and (c) corrosion resisting particles comprising magnesium oxide particles having a surface area of at least 10 square meters per gram and an average particle size of no more than 200 nanometers.
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29. A primer and/or pretreatment coating composition comprising:
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(a) a polyacrylate, wherein the polyacrylate comprises a urethane acrylate; (b) a polythiol; and (c) corrosion resisting particles consisting of magnesium oxide particles having a surface area of at least 10 square meters per gram.
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Specification