Anti-tarnish aqueous treatment

a technology of aqueous treatment and anti-tarnish, which is applied in the direction of detergent compositions, detergent compounding agents, cleaning using liquids, etc., can solve the problems of reducing the appearance, quality or purity of metal surfaces, soiling, dulling or tarnish formation, etc., to achieve rapid tarnish removal, prolong the time, and remove residual tarnish
US20050121052A1Inactive Publication Date: 2005-06-09FOR YOUR EASE ONLY
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
FOR YOUR EASE ONLY
Publication Date
2005-06-09
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

An aqueous solution that has the capacity for removing tarnish and other soil from copper, silver, gold and other noble metals and alloys thereof comprises an acid, thiourea and a transition metal salt. The aqueous material can be used to treat the surfaces of such articles for the purpose of removing tarnish. Such tarnish is removed by the composition and the composition treats the metal surface to retard the re-appearance of tarnish contaminants.
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Description

FIELD OF THE INVENTION

[0001] The invention relates to an aqueous solution comprising a combination of soluble ingredients forming a product having tarnish removing and tarnish preventing properties. The invention also relates to a method of cleaning and preserving metal surfaces subject to tarnish formation and formation of similar soil deposits. BACKGROUND OF THE INVENTION

[0002] Many high value products made from copper, silver, gold, other noble metals and alloys thereof can be subject to soiling, dulling or tarnish formation due to atmospheric contaminants, environmental conditions or by handling and use. These metal objects can often form surface deposits of one or more metal oxides or metal sulfides that can be difficult to remove without reducing the appearance, quality or purity of the metal surface. Many mechanical cleaning methods cause scratching or marring of the surface. Chemical cleaners can visually change surface appearance. Cleaners and polishers are available, but...

Claims

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