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US 4,414,127 AGranted
Contact lens cleaning solutions
AssigneeSyntex (U.S.A.) Inc.
InventorCherng-Chyi Fu
Life of this patent
Estimating the term…
Abstract
Disclosed herein are aqueous solutions for cleaning contact lenses comprising a water-soluble peroxide, transition metal salts, an amphoteric or anionic surfactant, and, optionally, tonicity salts.
Claims29
An aqueous contact lens cleaning composition which comprises
- a water-soluble peroxide;
- a catalytic amount of a water soluble transition metal catalyst in the form of an inorganic or organic salt;
- a surfactant which is (a) a monocarboxylated, dicarboxylated or sulfonated, fatty acid substituted imidazoline amphoteric surfactant, (b) a sulfonated amido-amine amphoteric surfactant or, (c) a coco-hydrolyzed animal protein anionic surfactant.
An article of manufacture comprising two packages from which aliquots are combined to make a contact lens cleaning composition wherein
- one package contains a granular or aqueous peroxide and the other contains an aqueous solution comprising
- a catalytic amount of water soluble transition metal catalyst in the form of an inorganic or organic salt;
- a surfactant which is (a) a monocarboxylated, dicarboxylated or sulfonated, fatty acid substituted imidazoline amphoteric surfactant, (b) a sulfonated amido-amine amphoteric surfactants or (c) a coco-hydrolyzed animal protein anionic surfactant.
A process for cleaning contact lenses which process comprises contacting a contact lens with a solution comprising a peroxide;
- a catalytic amount of a water soluble transition metal catalyst in the form of an inorganic or organic salt;
- and a surfactant which is (a) a monocarboxylated, dicarboxylated or sulfonated, fatty acid substituted imidazoline amphoteric surfactant, (b) a sulfonated amido-amine amphoteric surfactants (c) or a coco-hydrolyzed animal protein anionic surfactant.
Dependencies are inferred from the claim text.