Dissolvable tooth whitening strip
OwnerRobert Buch, Robert Gambogi +1inventors
InventorsRobert Buch, Robert Gambogi, Jose Velada
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Abstract
The present invention provides a dissolvable strip for whitening teeth. The strip, which is preferably a single layer, has a whitening agent and a water-soluble or water dispersible polymer system. The dissolution of the whitening composition is controlled by interaction of the whitening composition with an oral environment containing saliva. The present invention further provides a process for preparing the whitening strip in the form of a dry film and a method of whitening teeth.
Claims58
A dissolvable, strip for whitening teeth in an oral cavity, comprising:
- a whitening agent;
- and
- a water-soluble or water dispersible polymer system having a poly(vinylpyrrolidone) or any derivative thereof or any of its copolymers, and at least one other polymer, wherein said strip will dissolve by saliva in an oral environment.
A dissolvable, whitening strip for whitening teeth in an oral cavity, comprising:
- a controlled-dissolution, water-soluble or water dispersible whitening film having a whitening agent and a water-soluble or water dispersible polymer system, said polymer system has a poly(vinylpyrrolidone) or any of its copolymers or its derivatives and at least one other polymer,
- wherein the dissolution of the whitening strip is controlled by interaction of the whitening strip with saliva in the oral cavity.
A dissolvable, multi-layer strip for whitening teeth in an oral environment, comprising:
- a first controlled-dissolution film having a first whitening agent and a first water-soluble or water dispersible polymer system;
- and
- a second controlled-dissolution film disposed on said first film and having a second whitening agent and a second water-soluble or water dispersible polymer system,
- wherein said first and said second films are joined to form a stack, and
- wherein the dissolution of each of said first and said second films is controlled by interaction of said first and second films with saliva in the oral environment.
A process for preparing a whitening strip in the form of a dry film, comprising:
- combining a whitening agent, a water-soluble or water dispersible polymer system for said whitening agent and a volatile solvent, to form a mixture;
- applying said mixture onto a surface to form a film of said mixture on said surface;
- and
- removing said volatile solvent to produce a whitening strip in the form of the dry film.
Dependencies are inferred from the claim text.