Issued Patent: 8,802,202
SilverForLife: Anti-Tarnish treatment of Silver Jewelry and articles
Serenity's patented silver anti-tarnish technology SilverForLife (US 8,802,202) renders silver articles and silver jewelry with permanent anti-tarnish properties.
Silver has long been valued as a precious metal, and it is used to make ornaments, jewelry, high-value tableware, utensils and currency coins. One of the drawbacks of silver is its tendency to tarnish naturally in atmosphere due to the formation of silver sulfide. The appearance of the silver rapidly deteriorates based upon the thickness of the silver sulfide coating from initial yellowing of the surface finally resulting in a black film. The most common tarnish causing elements are food (onions, eggs, mayonaisse, salad dressing, salty foods) salt, wool, felt, rubber bands, latex gloves, carpet padding, sulfur in the air, oily residue from our hands and fingers.
Tarnish of silver can be removed by either polishing removal of the tarnish film or by reversing the chemical reaction that caused formation of silver sulfide. Whatever the method employed, tarnish removal is a laborious process that may damage the appearance of the silver article. There are various methods practiced currently that minimize or attempt to prevent the formation of tarnish such as alloying or plating with other elements such as Rhodium. None of the current methods eliminate tarnishing, nor are they cost effective and these techniques change the the appearance of the silver article.
Organic coatings protect silver by forming a physical barrier, and are generally used for storage and display of silver items.The main problem with these layers is that they are nearly always visible and if they are too thin the silver articles are not sufficiently protected.
Other methods include for storing silver in special storage materials such as certain polymers that react with sulfur to prevent its attack on silver. This type of method helps keep the silver in a reasonable condition only so long as it is kept within the storage materials.
Serenity's proprietary anti-tarnish treatment technology SilverForLife provides a very cost effective biocompatible permanent treatment to silver without affecting the appearance of the silver in any way. It provides additional advantages to the treatment of silver jewelry wherein jewelry containing stones or other treatments such as enameling can undergo SilverForLife treatment without affecting the non-silver items. SilverForLife treatment preserves the fine appearance of silver and completely eliminates the need for platings such as Rhodium which are not cost effective and also change the appearance of silver.