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US 9,518,328 B1Granted
Corrosion inhibiting gel
AssigneeCortec Corporation
InventorsTim Whited, Margarita Kharshan, Kristy Gillette, Boris Miksic
Life of this patent
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Abstract
A gel-forming corrosion inhibiting composition may be employed to protect a metal article from corrosion. The gel-forming corrosion inhibitor composition is combined with water and delivered to an enclosed space at least partially defined by the metal article. Subsequent to delivery, the combination forms a gel to sustainably fill the enclosed space, thereby protecting the metal article from corrosion.
Claims15
A method for inhibiting corrosion of a metal article defining an enclosure, said method comprising:
- (a) providing a first mixture having:
- (i) 0.1-20% by weight of a corrosion inhibitor selected from the group consisting of amine and ammonium salts of organic acids, ammonium salts of tribasic acids, amine salts of inorganic acids, alkali and amine dibasic acid salts, tall oil imidazolines, and combinations thereof;
- (ii) 1-50% by weight of a water-soluble gel-forming agent including a super-absorbent polymer;
- (iii) a cross-linking agent reactable with hydrophilic groups of said gel-forming agent, wherein said cross-linking agent includes at least one of a zirconium ion donor and a titanium ion donor;
- and
- (iv) water;
- (b) providing a second mixture having a hydrophilic polymer viscosity modifier that is different from said water-soluble gel-forming agent;
- (c) combining said first and second mixtures into a combination having a gelation time that initiates upon combining said first and second mixtures into said combination;
- and
- (d) delivering said combination to the enclosure within a delivery time that is less than said gelation time.
7 more elements
Dependencies are inferred from the claim text.