2, 4-Hexadienoic acid, its alkali salts and/or derivatives for preventing oxidative corrosion of metals

Abstract

Compositions and methods are disclosed for preventing the oxidative corrosion of metal surfaces by exposing a metal surface to an anti-corrosion agent characterized as 2,4-trans, trans-hexadienoic acid (2,4-HDA), its alkali salt identified as potassium sorbate (KHDA), or other derivatives that conserve or embody the 2,4-trans, trans-hexadiene-type moiety present in their molecular structures as an active anti-corrosion agent (ACA), in combination with a material capable of forming a moisture retentive barrier over the metal surface. The compositions and methods of the invention provide a practical, non-toxic way of ensuring anti-corrosion protection for metals, or devices containing exposed metals, stored or operated in water or in the presence of water vapor. Exemplary, non-exhaustive uses of the invention include employing the composition as a lubricant for the surface of a metal or as a pump oil or brake fluid; using the composition as an undercoating for painting, electro-plating or electro-polishing procedures; and providing a protective coating for any metal or metal-containing machine or device, from automotive assembly plant metal press machines to electronic circuit boards.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of application Ser. No. 10 / 055,799, filed on Oct. 25, 2001, now U.S. Pat. No. 6,833,087 entitled 2,4-HEXADIENOIC ACID, ITS ALKALI SALTS AND / OR DERIVATIVES FOR PREVENTING OXIDATIVE CORROSION OF METALS, and claims priority of U.S. Provisional Application No. 60 / 243,943 filed Oct. 27, 2000 entitled, 2,4-HEXADIENOIC ACID, ITS ALKALI SALTS AND / OR DERIVATIVES FOR PREVENTING WATER-MEDIATED OXIDATIVE CORROSION OF METALS, the whole of each of which are hereby incorporated by reference herein.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] None BACKGROUND OF THE INVENTION [0003] Corrosion is a serious problem that affects and undermines the quality of everyday social life and the endurance of industrial products. Extensive efforts have been undertaken to design and fabricate products such as steam generators, heat exchangers, bridges, oil drilling platforms and motor vehicles that can resi...

AI Technical Summary

Benefits of technology

[0010] The compositions and methods of the invention provide a practical, non-toxic way of ensuring anti-corrosion protection for metals, or devices containing exposed metals, stored or operated in water or in the presence of water vapor. Exemplary, non-inclusive uses include employing the composition as a lubricant for the surface of a metal or as a pump oil or brake fluid; using the composition as an undercoating for painting, electro-plating or electro-polishing procedures; and providing a protective coating for any metal or metal-containing machine or device, from automotive assembly plant metal press machines to electronic circuit boards.

Problems solved by technology

Corrosion is a serious problem that affects and undermines the quality of everyday social life and the endurance of industrial products.

For many traditional products, however, corrosion continues to be a serious destructive problem.

Implementation of such strategies usually produces an inflexible anti-corrosion barrier on metal surfaces, and once applied, its removal may be difficult or impossible.

For those situations where micro-mechanical or circuit-based devices display corrosion tendencies, aggressive industrial anti-corrosion methods may be totally unsuitable and physically damaging.