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US 2003/0144389 A1Published application
Method of content protection with durable UV absorbers
AssigneeCiba Specialty Chemicals Corporation
InventorsStephen Mark Andrews, Joseph Suhadolnik, Mervin Gale Wood
Life of this patent
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Abstract
The contents of clear or lightly colored plastic containers or films are protected from ultraviolet radiation by the incorporation of certain UV absorbers of the class of durable benzotriazoles and tris-aryl-s-triazines in the container or film. Contents to be protected include foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like.
Claims26
A plastic container or film for content storage which protects the contents therein against the deleterious effects of ultraviolet radiation which comprises
- (a) a clear or lightly colored plastic, and
- (b) an effective stabilizing amount of one or more compounds selected from the group consisting of durable hydroxyphenyl benzotriazole and tris-aryl-s-triazine UV absorbers.
Dependencies are inferred from the claim text.