Claims
- 1. A denture cleansing composition derived from a mixture comprising:
- (a) a pregranulated compressed mixture of an anhydrous perborate in an amount of from about 5% to about 25% by weight of said composition, a perborate monohydrate, and a lubricant and compression aid, wherein the weight ratio of anhydrous perborate to said perborate monohydrate in said pregranulated mixture is from about 1:3 to about 1:1, the amount of perborate monohydrate in the premixture being reflected by the ratio; and
- (b) a monopersulfate compound in an amount of from about 15% to about 27% by weight of said composition; and
- (c) non-granulated perborate monohydrate wherein the total amount of granulated and non-granulated perborate monohydrate is in an amount of from about 30% to about 60% by weight of said denture cleansing composition; and
- (d) an effective amount of a sequestering agent to remove calcium deposits and calculus deposits.
- 2. The denture cleansing composition of claim 1 wherein;
- (i) said anhydrous perborate is potassium or sodium anhydrous perborate;
- (ii) said lubricant and compression aid is in an amount of from about 0.1% to about 0.8% by weight of said pregranulated compressed mixture, and wherein said lubricant and compression aid is polytetrafluorethylene;
- (iii) said monopersulfate compound is a triple potassium salt with the formula KHSO.sub.5 .multidot.KHSO.sub.4 .multidot.K.sub.2 SO.sub.4 and a mole ratio of 2:1:1; and
- (iv) said sequestering agent is in an amount of from about 1% to about 25% by weight of said composition, and wherein said sequestering agent is Na.sub.4 EDTA.multidot.2H.sub.2 O.
- 3. The composition of claim 1, wherein said anhydrous perborate comprises from about 10% to about 20% by weight of said composition.
- 4. The composition of claim 1, wherein said anhydrous perborate comprises from about 13% to about 14% by weight of said composition.
- 5. The composition of claim 1, wherein said perborate monohydrate comprises from about 30% to about 40% by weight of the total cleansing composition.
- 6. The composition of claim 1, wherein said perborate monohydrate comprises from about 33% to about 35% by weight of the total cleansing composition.
- 7. The composition of claim 1 wherein said lubricant and compression aid is polytetrafluourethylene.
- 8. The composition of claim 1, wherein said lubricant and compression aid comprises from about 0.1% to about 0.8% by weight of the pregranulated compressed mixture.
- 9. The composition of claim 1 wherein said monopersulfate compound is a triple potassium salt with the formula KHSO.sub.5 .multidot.KHSO.sub.4 .multidot.K.sub.2 SO.sub.4 and a mole ratio of 2:1:1.
- 10. The composition of claim 9, wherein said monopersulfate compound comprises from about 15% to about 27% by weight of said composition.
- 11. The composition of claim 1, wherein said sequestering agent is EDTA.
- 12. The composition of claim 11, wherein said EDTA is Na.sub.4 EDTA.multidot.2H.sub.2 O.
- 13. The composition of claim 12, wherein said Na.sub.4 EDTA.multidot.2H.sub.2 O comprises from about 1% to about 25% by weight of said composition.
- 14. The composition of claim 13, wherein the mesh-size profile of said EDTA is a maximum of 40% through U.S.S. 100 mesh sieve, a maximum of 65% on the U.S.S. 40 mesh sieve and a maximum of 0.2% remaining on the U.S.S. 20 mesh sieve.
- 15. The composition of claim 13, wherein the mesh-size profile of the said EDTA is in the range of a maximum of 20% through U.S.S. 100 mesh sieve, a maximum of 25% on the U.S.S. 40 mesh sieve and a maximum of 0.2% remaining on the U.S.S. 20 mesh sieve.
- 16. The composition of claim 12, wherein the chelating value of said Na.sub.4 EDTA.multidot..sub.2 H.sub.2 O is at least about 248.
- 17. The composition of claim 1, wherein said monopersulfate is selected from the group consisting of alkali metal monopersulfates and alkaline earth metal monopersulfates.
- 18. The composition of claim 1, wherein said monopersulfate is sodium or potassium monopersulfate.
- 19. The composition of claim 1, wherein said anhydrous perborate is selected from the group consisting of alkali metal perborates and alkaline earth metal perborates.
- 20. The composition of claim 1, wherein said anhydrous perborate is potassium or sodium anhydrous perborate.
- 21. The composition of claim 1, wherein the weight ratio of perborate monohydrate to anhydrous perborate to polymeric fluorocarbon compound is about 54.2:45.2:0.6.
- 22. The composition of claim 1, wherein said perborate monohydrate is potassium or sodium perborate monohydrate.
- 23. The composition of claim 1, wherein the weight ratio of perborate monohydrate/monopersulfate compound is from about 3:1 to about 1:1.
- 24. The composition of claim 23, wherein the weight ratio of perborate monohydrate/monopersulfate compound is about 1.7:1.
- 25. The composition of claim 1, wherein the free surface water moisture content of a tablet made from said composition comprises preferably less than about 0.3% by weight of the composition.
- 26. The composition of claim 1, wherein a detergent is a component of said composition.
- 27. The composition of claim 26, wherein said detergent is an anionic detergent.
- 28. The composition of claim 27, wherein said anionic detergent is present in the amount of up to about 5% by weight of the composition.
- 29. The composition of claim 1, wherein the tablet composition is characterized by active oxygen levels in the range from about 100 to about 200 mg/tablet.
- 30. The composition of claim 1, wherein the composition is characterized by fragrance retention levels greater than about 50% throughout a period of six hours or greater.
- 31. The composition of claim 1, wherein the composition is characterized by fragrance retention levels greater than about 50% throughout a period of 16 hours.
- 32. A process for preparing a denture cleansing composition according to claim 1 comprising the steps of:
- (a) preparing a compacted compressed mixture comprising anhydrous perborate salts and perborate monohydrate salts in combination with a lubricant and compression aid; and
- (b) grinding said compacted mixture into a pregranulation mixture, or premix; and
- (c) adding the pregranulation mixture, or premix, to the other materials in the denture cleansing composition and mixing; and
- (d) adding detergent to the mixture and mixing for up to 3 minutes; and
- (e) forming the resultant blended mixture into a cohesive tablet.
- 33. The process of claim 32 wherein said compacted mixture is pre-dried to a free moisture level of about 0.3% to about 1.5% by weight of the compacted mixture.
- 34. The process of claim 33 wherein said compacted mixture is pre-dried to a free moisture level of less than about 0.3% by weight of the compacted mixture.
- 35. A denture cleansing composition derived from a mixture comprising:
- (a) a pregranulated compressed mixture of an anhydrous perborate in an amount of from about 5% to about 25% by weight of said composition, a perborate monohydrate, and a lubricant and compression aid, wherein the weight ratio of anhydrous perborate to said perborate monohydrate in said pregranulated mixture is from about 1:3 to about 1:1, the amount of perborate monohydrate in the premixture being reflected by the ratio;
- (b) a monopersulfate compound in an amount of from about 15% to about 27% by weight of said composition;
- (c) non-granulated perborate monohydrate wherein the total amount of granulated and non-granulated perborate monohydrate is in an amount of from about 30% to about 60% by weight of said denture cleansing composition;
- (d) an effective amount of a sequestering agent to remove calcium deposits and calculus deposits; and
- (e) an effective amount of at least one fragrance.
- 36. The composition of claim 35 wherein the fragrance is thymol.
- 37. The composition of claim 35 wherein the fragrance is eucalyptol.
- 38. The composition of claim 35 wherein the fragrance is methyl salicylate.
- 39. The composition of claim 35 wherein the fragrance is menthol.
- 40. A process for preparing a denture cleansing composition according to claim 35 comprising the steps of:
- (a) preparing a compacted compressed mixture comprising anhydrous perborate salts and perborate monohydrate salts in combination with a lubricant and compression aid;
- (b) grinding said compacted mixture into a pregranulation mixture, or premix;
- (c) adding the pregranulation mixture, or premix, to the other materials in the denture cleaning composition and mixing;
- (d) adding detergent to the mixture and mixing;
- (e) adding at least one fragrance to the mixture; and
- (f) forming the resultant blended mixture into a cohesive tablet.
- 41. The process for claim 41 wherein the fragrance is selected from the group consisting of thymol, eucalyoptol, methyl salicylate and menthol.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation of application Ser. No. 08/160,378 filed on Dec. 1, 1993, now U.S. Pat. No. 5,348,062.
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Date |
Kind |
4155868 |
Kaplan et al. |
May 1979 |
|
5384062 |
Eoga et al. |
Jan 1995 |
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Foreign Referenced Citations (2)
Number |
Date |
Country |
253772 |
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EPX |
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Continuations (1)
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Number |
Date |
Country |
Parent |
160378 |
Dec 1993 |
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