US4540504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture cleaner having improved dissolution time and clarity and method of preparation
Assignee: Warner Lambert Co LLC
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Filing: 1984-04-13
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Granted: 1985-09-10
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Expires: 2004-04-13
Abstract
Abstract A cleansing composition is disclosed that is particularly suited for compaction into tablet form, and comprises a phosphate salt, an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, said combination having a portion present in a compacted granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluocarbon, and a chelating or sequestering agent present in amounts greater than about 10% by weight up to about 50% by weight of the total composition, said cleansing composition being capable of cleansing stained surfaces and the like with a soaking time of five minutes or less when dissolved in aqueous solution and producing a marked improvement in clarity of solution upon disintegration and cleaning efficacy over the prior art.
Inventors
- 👤 Anthony B. J. Eoga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
A; A61; A61Q; A61Q11/00; A61Q11/02; A61K; A61K8/00; A61K8/02; A61K8/0216; A61K8/022; A61K8/0225; A61K8/18; A61K8/19; A61K8/22; A61K8/24; A61K8/72; A61K8/81; A61K8/8123; C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0052; C11D3/39; C11D3/3942; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/16; A61K2800/00; A61K2800/20; A61K2800/22; A61K2800/222; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
193 words
An improved effervescent cleansing composition in tablet form comprising: (a) about 20% to about 45% by weight of the final composition of an alkali metal or alkaline earth metal phosphate salt; (b) an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, wherein the proportion of anhydrous to monohydrate perborate is from about 1 to 3 to about 3 to 1, said combination having a portion present in a compacted, granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluorocarbon, said cleansing composition being capable of thoroughly cleansing stained surfaces within a soaking time of five minutes or less when dissolved in aqueous solution; (c) a sequestering agent in amounts of greater than about 10% by weight up to about 50% by weight of the composition, said sequestering agent being selected from the group consisting of phosphonic acid derivatives, carboxylic acid derivatives and mixtures thereof.
Claim 2
Dependent Claim
193 words
An improved effervescent cleansing composition in tablet form comprising: (a) about 20% to about 45% by weight of the final composition of an alkali metal or alkaline earth metal phosphate salt; (b) an improved perborate salt mixture wherein the improvement comprises a combination of anhydrous perborate and monohydrate perborate in the amount of about 50% to about 70% by weight of the total cleansing composition, wherein the combination includes at least 20% by weight of the total cleansing composition of anhydrous perborate, wherein the proportion of anhydrous to monohydrate perborate is from about 1 to 3 to about 3 to 1, said combination having a portion present in a compacted, granulated mixture with from about 0.01% to about 0.70% by weight of said combination of a polymeric fluorocarbon, said cleansing composition being capable of thoroughly cleansing stained surfaces within a soaking time of five minutes or less when dissolved in aqueous solution; (c) a sequestering agent in amounts of greater than about 10% by weight up to about 50% by weight of the composition, said sequestering agent being selected from the group consisting of phosphonic acid derivatives, carboxylic acid derivatives and mixtures thereof.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein said phosphate salt comprises trisodium phosphate.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein said perborate salt mixture comprises alkali metal and alkaline earth metal perborates.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein said alkali metal perborate salt mixture comprises sodium perborate monohydrate and anhydrous sodium perborate.
Claim 6
Dependent Claim
23 words
The composition of claim 1 wherein said anhydrous perborate is present in an amount of from about 20% to about 25% by weight.
Claim 7
Dependent Claim
13 words
The composition of claim 5 wherein said anhydrous perborate comprises anhydrous sodium perborate.
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein said polymeric fluorocarbon includes at least one fluroolefin.
Claim 9
Dependent Claim
11 words
The composition of claim 7 wherein said polymeric fluorocarbon comprises polytetrafluoroethylene.
Claim 10
Dependent Claim
22 words
The composition of claim 8 wherein said polymeric fluorocarbon is present in an amount from about 0.33% to about 0.66% by weight.
Claim 11
Dependent Claim
25 words
The composition of claim 1 further including at least one material selected from the following: builders, detergents, lubricants, perfumes, flavorings, excipients, disintegrants, and mixtures thereof.
Claim 12
Dependent Claim
38 words
The composition of claim 1 wherein the sequestrant is selected from the group consisting of amino carboxylate, hydroxycarboxylate and mixtures thereof, present in amounts of greater than about 10% up to about 50% by weight of the composition.
Claim 13
Dependent Claim
18 words
The composition of claim 11 wherein the sequestrant comprises ethylenediamine tetraacetric acid or nitrilotriacetic acid and salts thereof.
Claim 14
Dependent Claim
22 words
The composition of claim 11 wherein the sequestrant is selected from the group consisting of gluconic acid, citric acid and salts thereof.
Claim 15
Dependent Claim
36 words
The composition of claim 13 wherein the sequestrant comprises a phosphonate salt, its alkali metal salts and mixtures thereof present in amounts of greater than about 10% up to about 50% by weight of the composition.
Claim 16
Dependent Claim
33 words
The composition of claim 14 wherein the sequestrant is selected from the group consisting of amino tri(methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediamine tetra(methylene phosphonic acid), hexamethylenediaminetetra(methylenephosphonic acid), diethylene triamine penta(methylenephosphonic acid) and mixtures thereof.
Claim 17
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 1.
Claim 18
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 6.
Claim 19
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 9.
Claim 20
Dependent Claim
16 words
The tablet of claim 1 useful as a denture cleanser comprising the composition of claim 15.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |