US5244593A
Expired / Lapsed
US
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Colorless detergent compositions with enhanced stability
Assignee: Procter and Gamble Co
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Filing: 1992-01-10
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Granted: 1993-09-14
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Expires: 2012-01-10
Abstract
Abstract Stable colorless detergent compositions are provided comprising anionic and/or nonionic surfactant, oxygen bleach and metal sequestering agent. The compositions do not discolor over time or under harsh temperatures.
Inventors
- 👤 Brian J. Roselle
- 👤 Donald T. Speckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:29
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/08; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61K8/39; A61K8/46; A61K8/463; A61Q19/00; A61Q19/10; A61Q5/02; C; C11; C11D; C11D17/00; C11D17/0008; C11D17/003; C11D3/00; C11D3/39; C11D3/3942; C11D3/3947; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
81 words
A stable, colorless detergent composition comprising: (a) from about 5% to about 95% by weight of anionic or nonionic surfactant; (b) from about 0.005% to about 10% by weight of oxygen bleach; (c) from about 0.001% to about 8% by weight of metal sequestering agent; and (d) from about 1% to about 20% by weight of suds booster; wherein the composition has a pH between about 4 and about 11, and a transmittance at 470 nm. of greater than about 85%.
Claim 2
Dependent Claim
81 words
A stable, colorless detergent composition comprising: (a) from about 5% to about 95% by weight of anionic or nonionic surfactant; (b) from about 0.005% to about 10% by weight of oxygen bleach; (c) from about 0.001% to about 8% by weight of metal sequestering agent; and (d) from about 1% to about 20% by weight of suds booster; wherein the composition has a pH between about 4 and about 11, and a transmittance at 470 nm. of greater than about 85%.
Claim 3
Independent Claim
130 words
A method of making a colorless detergent composition comprising the steps of: (a) forming a paste at a temperature of from about 70° F. to about 180° F., the paste comprising from about 30% to about 80%, by weight of the paste, of anionic and nonionic surfactant; from about 0.05% to about 2%, by weight of the paste, of oxygen bleach; from about 0.005% to about 5%, by weight of the paste, of metal sequestering agent; from about 0% to about 20%, by weight of the paste, of alcohol; and from about 1% to about 20% by weight suds booster; the paste having a pH greater than about 7 and being substantially colorless; and (b) adding to the paste of step (a) sufficient ingredients to form a colorless detergent composition.
Claim 4
Independent Claim
130 words
A method of making a colorless detergent composition comprising the steps of: (a) forming a paste at a temperature of from about 70° F. to about 180° F., the paste comprising from about 30% to about 80%, by weight of the paste, of anionic and nonionic surfactant; from about 0.05% to about 2%, by weight of the paste, of oxygen bleach; from about 0.005% to about 5%, by weight of the paste, of metal sequestering agent; from about 0% to about 20%, by weight of the paste, of alcohol; and from about 1% to about 20% by weight suds booster; the paste having a pH greater than about 7 and being substantially colorless; and (b) adding to the paste of step (a) sufficient ingredients to form a colorless detergent composition.
Claim 5
Dependent Claim
120 words
The composition of claim 1 wherein the anionic or nonionic surfactant is selected from the group consisting of linear alkyl benzene sulfonate having about 9 to 15 carbon atoms in the alkyl group, alkyl sulfate having about 8 to 22 carbon atoms, alkyl ether sulfate having about 8 to 22 carbon atoms in the alkyl group and about 1 to 30 ethylene oxide units, olefin sulfonates having 8 to 22 carbon atoms, fatty acid ester sulfonate, condensates of fatty acids with sarcosine, alkyl ethoxy carboxylate, alkyl glyceryl ether sulfonates having 8 to 22 carbon atoms, alkyl polyglucoside, alcohol ethoxylated with from about 1 to 30 moles of ethylene oxide per mole of alcohol, polyhydroxy fatty acid amide, and mixtures thereof.
Claim 6
Dependent Claim
41 words
The composition of claim 3 wherein the metal sequestering agent is selected from the group consisting of citric acid, tartaric acid, sodium tripolyphosphate, sodium carbonate, potassium carbonate, sodium pyrophosphate, potassium pyrophosphate, sodium hexametaphosphate, alkali metal polycarbonates, bicarbonate, silicate, and mixtures thereof.
Claim 7
Dependent Claim
21 words
The composition of claim 4 wherein the ratio of anionic and nonionic surfactant to oxygen bleach is at least about 1,500:1.
Claim 8
Dependent Claim
27 words
The composition of claim 5 wherein the oxygen bleach is selected from the group consisting of hydrogen peroxide, perborates, persulfates, peroxysulphates, perphosphates, periodinates, percarbonates and mixtures thereof.
Claim 9
Dependent Claim
13 words
The composition of claim 6 wherein the metal sequestering agent is citric acid.
Claim 10
Dependent Claim
27 words
The composition of claim 7 wherein the suds booster is selected from the group consisting of betaine, amine oxide semi-polar nonionic, fatty acid amide, and mixtures thereof.
Claim 11
Dependent Claim
12 words
The composition of claim 8 wherein the oxygen bleach is hydrogen peroxide.
Claim 12
Dependent Claim
40 words
The composition of claim 9 wherein the stable colorless detergent composition is selected from the group consisting of liquid and granular dishwashing detergents, liquid and granular automatic dishwashing detergents, shampoos, liquid soaps, bar soaps, and liquid and granular laundry detergents.
Claim 13
Dependent Claim
80 words
The composition of claim 10 wherein an anionic surfactant is selected from the group consisting of linear alkyl benzene sulfonate having about 9 to 15 carbon atoms in the alkyl group, alkyl sulfate having about 8 to 22 carbon atoms, alkyl ether sulfate having about 8 to 22 carbon atoms in the alkyl group and about 1 to 30 ethylene oxide units, olefin sulfonates having 8 to 22 carbon atoms, fatty acid ester sulfonate, alkyl ethoxy carboxylate, and mixtures thereof.
Claim 14
Dependent Claim
16 words
The composition of claim 11 comprising from about 0.005% to about 5% of metal sequestering agent.
Claim 15
Dependent Claim
15 words
The composition of claim 12 comprising from about 0.01% to about 3% of oxygen bleach.
Claim 16
Dependent Claim
16 words
The composition of claim 13 comprising from about 10% to about 65% of the anionic surfactant.
Claim 17
Dependent Claim
29 words
A colorless shampoo composition according to claim 14 comprising from about 1% to about 25% of ammonium lauryl sulfate and from about 0.1% to about 1% of citric acid.
Claim 18
Dependent Claim
17 words
The composition of claim 14 comprising from about 0.01% to about 2% of the metal sequestering agent.
Claim 19
Dependent Claim
34 words
The composition of claim 16 comprising from about 0.05% to about 0.5% of hydrogen peroxide and wherein the ratio of anionic and nonionic surfactant to oxygen bleach is from about 50:1 to about 500:1.
Claim 20
Dependent Claim
16 words
The composition of claim 17 wherein the transmittance at 470 nm is greater than about 90%.
Claim 21
Dependent Claim
20 words
The composition of claim 18 wherein the composition has an available oxygen level of from about 0.005% to about 2.5%.
Claim 22
Dependent Claim
48 words
A colorless detergent paste according to claim 17 comprising from about 30% to about 80% of alkyl sulfate and alkyl ether sulfate, from about 0.1% to about 1.0% of hydrogen peroxide, and from about 0.005% to about 5% of citric acid; the paste being substantially clear and colorless.
Claim 23
Dependent Claim
65 words
A light duty liquid dishwashing detergent according to claim 18 comprising from about 10% to about 35% of alkyl ether sulfate, from about 0.05% to about 5% of hydrogen peroxide, from about 0.01% to about 2% of citric acid, and from about 1% to about 7% of amine oxide; the composition being substantially clear and colorless and having a pH between about 5 and 9.
Claim 24
Dependent Claim
17 words
The method of claim 2 wherein the colorless detergent composition is a light duty liquid dishwashing composition.
Claim 25
Dependent Claim
69 words
The method of claim 22 wherein the paste of step (a) comprises from about 40% to about 70%, by weight of the paste, of anionic surfactant; from about 0.1% to about 1%, by weight of the paste, of oxygen bleach; from about 0.01% to about 2%, by weight of the paste, of metal sequestering agent; and from about 1% to about 10%, by weight of the paste, of alcohol.
Claim 26
Dependent Claim
12 words
The method of claim 23 wherein the oxygen bleach is hydrogen peroxide.
Claim 27
Dependent Claim
55 words
The method of claim 24 wherein the anionic surfactant is alkyl sulfate having about 8 to 22 carbon atoms and alkyl ether sulfate having 8 to 22 carbon atoms in the alkyl group and about 1 to 30 ethylene oxide units, the metal sequestering agent is citric acid, and the alcohol is ethanol or methanol.
Claim 28
Dependent Claim
63 words
The composition of claim 17 wherein the metal sequestering agent is selected from the group consisting of sodium and potassium citrates, sodium and potassium tartrate, sodium and potassium ethylenediaminetetraacetate, sodium and potassium ethylenepentaacetate, sodium and potassium N-(2-hydroxyethyl)-ethylene diamine triacetates, sodium, and potassium nitriol triacetates, sodium and potassium N-(2-hydroxyethyl)-nitrilo diacetates, sodium and potassium oxydisuccinates, sodium and potassium tartrate mono- and disuccinates and mixtures thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |