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Corrosion Resistant Primer Coatings for the Protection of Aluminum Alloys

IP Title

CORROSION RESISTANT COATINGS

Detailed Technology Description

None

Supplementary Information

Inventor: Stoffer, James | O'Keefe, Thomas | Morris, Eric | Yu, Pu | Hayes, Scott A.
Priority Number: US7759419B2
IPC Current: C23F001100 | C08K000310 | C09C000156 | C09D000508
US Class: 524403 | 252387 | 524167 | 524238 | 524423 | 524588 | 524612
Assignee Applicant: The Curators of the University of Missourilumbia
Title: Corrosion resistant coatings
Usefulness: Corrosion resistant coatings
Summary: For use in coating substrate e.g. metal substrate, aluminum, or composite. The metal substrate is substrate made of aluminum, aluminum alloys, steel, galvanized steel, zinc, zinc alloys, magnesium, and magnesium alloys. (All claimed). The coating composition is useful for aerospace and aircraft industries.
Novelty: Corrosion inhibiting composition used in coating substrate used for e.g. aerospace comprises a rare earth compound, and a binder

Industry

Chemical/Material

Sub Category

Chemical/Material Application

Application Date

Jan 16, 2004

Application No.

7,759,419

Others

*Abstract

Abstract of Patent Application 20040186201 A1 - Corrosion resistant coatings: A coating composition comprising an effective corrosion-inhibiting amount of a rare earth compound, a neutral to slightly acidic generating extender or an acidic generating extender, or combinations thereof is provided. In one embodiment, the corrosion-inhibiting components are combined with other components such as extenders, amino acids and amino acid derivatives, gelatin and gelatin derivatives, organic-based exchange resins, and combinations thereof, to enhance the corrosion resistance of the resultant coating film. The coating compositions have good adhesion to substrates such as metals, including aluminum and aluminum alloys.Non-confidential Abstract of Invention: Additives for spray applied primer coatings have been developed that allow for improved corrosion resistance to the metal alloy system. Moderate to low concentrations of rare earth compounds and/or organic exchange resins and/or various amino acids have been incorporated into a commercially available primer formulation as corrosion inhibitors. Evaluation of the primer coatings containing rare earth compounds and/or organic exchange resins and/or various amino acids in neutral salt fog environments suggest the presence of these corrosion inhibitors improves the overall corrosion resistance of the metal substrate. Elemental characterization of these systems suggests leaching of the inhibitor to passivate and protect the underlying metal substrate. Also see 03UMR022.

*IP Issue Date

Jul 20, 2010

*IP Publication Date

Dec 9, 2004

*Principal Investigator

Name: James Stoffer, Curators' Professor

Department:

Name: Thomas O'Keefe, Curatorss' Professor Emeritus

Department:

Name: Eric Morris

Department:

Name: Pu Yu

Department:

Name: Scott Hayes

Department:

Country/Region

USA