Patent US4512908A successfully refreshed from Google Patents.
US4512908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly alkaline liquid warewashing emulsion stabilized by clay thickener
Assignee: Ecolab Inc
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Filing: 1983-07-05
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Granted: 1985-04-23
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Expires: 2003-07-05
Abstract
Abstract A stable, highly alkaline liquid warewashing emulsion composition can comprise an effective hardness sequestering amount of a sodium condensed phosphate, a detergent building amount of sodium hydroxide, an effective stain-removing amount of an inorganic source of chlorine, and an emulsion stabilizing amount of a hectorite clay thickener, which can be used in wash water at concentrations of less than about 2% to clean and destain tableware.
Inventors
- 👤 Bernard J. Heile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:09
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3956; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/1266
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A highly alkaline composition having cleaning and stain removing properties which consists essentially of: (a) water; (b) 15-45% of a sodium condensed phosphate hardness sequestering agent; (c) about 5 to 25% of sodium hydroxide or potassium hydroxide; (d) about 2 to 35% of an inorganic source of chlorine; and, (e) about 0.2 to 5% of a hectorite clay dispersant-thickening agent incorporating silicon dioxide, magnesium oxide, sodium oxide, lithium oxide and structural water of hydration in a ratio of about 25-75:20-40:1-10:0.1-1:1-10 wherein said agent is present in an amount effective to maintain the composition as a stable liquid emulsion or dispersion which is substantially resistant to deterioration under alkaline conditions.
Claim 2
Dependent Claim
109 words
A highly alkaline composition having cleaning and stain removing properties which consists essentially of: (a) water; (b) 15-45% of a sodium condensed phosphate hardness sequestering agent; (c) about 5 to 25% of sodium hydroxide or potassium hydroxide; (d) about 2 to 35% of an inorganic source of chlorine; and, (e) about 0.2 to 5% of a hectorite clay dispersant-thickening agent incorporating silicon dioxide, magnesium oxide, sodium oxide, lithium oxide and structural water of hydration in a ratio of about 25-75:20-40:1-10:0.1-1:1-10 wherein said agent is present in an amount effective to maintain the composition as a stable liquid emulsion or dispersion which is substantially resistant to deterioration under alkaline conditions.
Claim 3
Dependent Claim
24 words
The composition of claim 1 wherein the inorganic source of chlorine comprises a hypochlorite compound, chlorinated sodium tripolyphosphate, a chlorate compound or mixtures thereof.
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein the inorganic source of chlorine comprises an alkali metal hypochlorite, an alkaline earth metal hypochlorite, or mixtures thereof.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the sodium condensed phosphate composition comprises sodium tripolyphosphate, tetrasodium pyrophosphate or mixtures thereof.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein the dispersant-thickening agent is a synthetic hectorite.
Claim 7
Dependent Claim
14 words
The composition of claim 3 wherein the inorganic source of chlorine is sodium hypochlorite.
Claim 8
Dependent Claim
27 words
The composition of claim 5 wherein the synthetic hectorite is of the formula: Na 0 .22 Li 0 .5 Mg 5 .64 Si 8 O 20 (OH).
Claim 9
Dependent Claim
112 words
A process for cleaning table ware comprising glass ware, flat ware and hollow ware, which are fouled or stained with food, which consists essentially of: (a) adding to wash water having a hardness of from about 1 to about 20 grains of hardness per gallon, a sufficient amount of the composition of claim 15 to form a solution having 0.01 to about 0.5 wt-% of the highly alkaline composition to form an aqueous cleaning solution; (b) applying the aqueous cleaning solution to table ware fouled with food or stains for a period sufficient to clean and destain the table ware; and, (c) rinsing the table ware free of the aqueous cleaning solution.
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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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |