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Details for Patent: 5,260,062

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Details for Patent: 5,260,062

Title: Anti-plaque and anti-tartar dentifrices in plastic pump dispensers
Abstract:A dental composition, such as a paste or gel dentifrice containing triclosan, as an antibacterial agent which acts to decrease plaque on the teeth, and polyphosphate for anti-tartar actions, is packaged in a finger actuatable pump-type plastic dispensing container which is made of or includes a solid polymeric material, such as a polyfluoroethylene, which is compatible with triclosan, so that excessive loss of its anti-plaque activity on storage is avoided, which losses have been noted when various other plastics have been employed as dispensing container component materials. Alternatively, others of such plastic may be employed for dispensing container parts when a stabilizer, such as a terpene, e.g., limonene, is present in the dentifrice. The dentifrice preferably also contains a tooth hardening propotion of a source of fluoride ions, a stabilizing proportion (in conjunction with the fluoride source) for the polyphosphate, of a polyvinyl methyl ether-maleic anhydride copolymer, and normal dentifrice adjuvants.
Inventor(s): Gaffar; Abdul (Princeton, NJ)
Assignee: Colgate-Palmolive Company (Piscataway, NJ)
Filing Date:Jul 02, 1990
Application Number:07/547,641
Claims:1. An article comprising a hand holdable, finger actuated, floating piston pump dispensing container having solid polyethylene or polyethylene terephthalate polymeric material in contact with a dentifrice composition in the container, which composition comprises an effective antibacterial antiplaque proportion of a substantially water insoluble non-cationic halogenated diphenylether antibacterial antiplaque agent, at least about 25% of which has been found to be lost after twelve weeks storage at room temperature in said container, and a stabilizing terpene to make said polymeric material compatible with said agent in the presence of the oral composition whereby said loss is prevented and the dispensed composition contains more than about 75% of its initial content of said agent.

2. An article according to claim 1 wherein the dentifrice is in paste or gel form and further contains an effective anti-tartar proportion of linear molecularly dehydrated polyphosphate.

3. An article, according to claim 1 in which the dentifrice comprises 0.1 to 1% of triclosan.

4. An article, according to claim 3 in which the dentifrice comprises 0.1 to 3% of linear molecularly dehydrated polyphosphate.

5. An article, according to claim 1 in which the dentifrice comprises a vehicle, a polishing agent, and the pump dispenser comprises a walled tube, a pumping end on such tube, communicating with a discharge element and movable with respect to the tube, and a floating end on the tube, movable by air pressure toward the pumping end but not movable in the opposite direction.

6. An article according to claim 5 in which the dentifrice comprises 0.2 to 0.8% of triclosan, 0.5 to 3% of polyphosphate, 0.005 to 3% of a source of fluorine ions and 0.2 to 5% of synthetic anionic polymeric polycarboxylate, and the pump dispenser comprises a walled cylindrical tube, a dispensing nozzle communicating with the interior of the tube through a pumping piston in the tube, and a floating piston in the tube, with the pistons and the tube contacting the dentifrice.

7. An article according to claim 5 wherein the pump dispenser parts that contact the dentifrice during storage and dispensing of the dentifrice comprise polyethylene.

8. An article according to claim 2 in which the dentifrice comprises a stabilizing proportion of a terpene which stabilizes the triclosan in the presence of said polymeric material.

9. An article according to claim 8 in which the dentifrice comprises 0.01 to 2% of stabilizing terpene(s) and the contacting dispensing container parts are of polyethylene.

10. An article according to claim 9 in which the dentifrice comprises 0.1 to 1% of triclosan, 0.1 to 3% of polyphosphate, 0.05 to 1% of a source of fluorine ions, 0.2 to 5% of synthetic anionic polymeric polycarboxylate and 0.05 to 1% of stabilizing terpene(s).

11. An article according to claim 10 in which the dentifrice comprises 0.2 to 0.8% of triclosan, 1.5 to 2.5% of tetrasodium pyrophosphate, sodium tripolyphosphate or sodium hexametaphosphate or any mixture thereof, 0.1 to 1% of sodium fluoride or sodium monofluorophosphate or mixture thereof, 0.5 to 4% of polyvinyl methyl ether/maleic anhydride copolymer, and 0.1 to 0.5% of stabilizing terpene(s).

12. An article according to claim 6 in which the dentifrice comprises 0.2 to 0.5% of triclosan, 1.5 to 2.5% of tetrasodium pyrophosphate, sodium tripolyphosphate or sodium hexametaphosphate or any mixture thereof, 0.1 to 1% of sodium fluoride or sodium monofluorophosphate or mixture thereof, 0.5 to 4% of polyvinyl methyl ether/maleic anhydride copolymer and 0.1 to 0.5% of limonene.

13. An article according to claim 12 in which the dentifrice comprises about 0.3% of triclosan, about 2% of tetrasodium pyrophosphate, about 0.3% of sodium fluoride, and about 2% of polyvinyl methyl ether/maleic anhydride copolymer, and in which the parts of the container that contact the dentifrice during storage or during dispensing comprise polyethylene.

14. An article according to claim 1 in which the pump dispenser comprises a cylindrically walled container, an upwardly only movable floating piston compartment bottom and a pressure piston compartment top, which define a compartment of changeable volume for the dentifrice, a conduit and a nozzle which communicate with the compartment and facilitate the discharge of dentifrice from it when that is desired, an actuator for applying finger pressure to the pumping piston to move it downwardly to discharge dentifrice from the compartment through the conduit and nozzle, when desired, and spring means to return the pumping piston to initial position after discharge of dentifrice from the container, without sucking back contents from the conduit into said compartment.

15. An article according to claim 5 wherein the pumping piston is of a laminate of outer layers of polyethylene with polyethylene terephthalate or inner ethylene vinyl alcohol.

16. An article according to claim 4 wherein the pumping piston is of a laminate of outer layers of polyethylene with polyethylene terephthalates or inner ethylene vinyl alcohol layers.

17. An article comprising a hand holdable finger actuated, floating piston pump container dispenser having solid destabilizing polyethylene or polyethylene terephthalate polymeric material in contact with a viscous anti-plaque, anti-tartar dentifrice in the dispenser, which dentifrice comprises an effective anti-plaque proportion of a halogenated diphenyl ether, an effective anti-tartar proportion of polyphosphate antitartar agent, and a stabilizing proportion of a terpene which stabilizes the halogenated diphenyl ether in the presence of said destabilizing material.

18. An article according to claim 17 wherein said destabilizing material comprises polyethylene, said halogenated diphenyl ether comprises triclosan and said terpene comprises limonene and said polyphosphate comprises tetrasodium or tetrapotassium pyrophosphate or a mixture thereof.

19. An article according to claim 1 wherein the stabilizing terpene is not a component of a flavoring agent.

20. An article according to claim 17 wherein the stabilizing terpene is not a component of a flavoring agent.
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