US4000082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defoaming compositions based on lithium salts
Assignee: Diversey Wyandotte Corp
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Filing: 1975-10-02
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Granted: 1976-12-28
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Expires: 1995-10-02
Abstract
Abstract Aqueous cleaning compositions incorporating lithium salts to inhibit foaming.
Inventors
- 👤 Joseph V. Otrhalek
- 👤 Robert E. Gansser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0026; C11D3/02; C11D3/04; C11D3/044; C11D3/046; C11D3/10; C11D3/16; C11D3/26; C11D3/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
In an aqueous cleaning composition concentrate consisting essentially of by weight about 0 to about 20 percent sequestering agent, about 1.5 to about 5 percent anionic surface active agent, about 0.1 to about 1.0 percent nonionic surface active agent, about 5 to about 50 percent of a compound selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium metaborate, sodium tetraborate, potassium metaborate, potassium tetraborate, monoethanolamine, diethanolamine, and triethanolamine, balance, water, the improvement wherein said concentrate includes a lithium salt selected from the group consisting of lithium hydroxide, lithium carbonate, lithium bicarbonate, lithium chloride, lithium bromide, lithium nitrate, lithium sulfate and lithium hypochlorite, in an amount from about 1.0 to about 5 weight percent of said concentrate whereby improved defoaming properties are obtained.
Claim 2
Dependent Claim
134 words
In an aqueous cleaning composition concentrate consisting essentially of by weight about 0 to about 20 percent sequestering agent, about 1.5 to about 5 percent anionic surface active agent, about 0.1 to about 1.0 percent nonionic surface active agent, about 5 to about 50 percent of a compound selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium metaborate, sodium tetraborate, potassium metaborate, potassium tetraborate, monoethanolamine, diethanolamine, and triethanolamine, balance, water, the improvement wherein said concentrate includes a lithium salt selected from the group consisting of lithium hydroxide, lithium carbonate, lithium bicarbonate, lithium chloride, lithium bromide, lithium nitrate, lithium sulfate and lithium hypochlorite, in an amount from about 1.0 to about 5 weight percent of said concentrate whereby improved defoaming properties are obtained.
Claim 3
Dependent Claim
23 words
The concentrate of claim 1 wherein the amount of lithium salt is from about 2 to about 4 weight percent of said concentrate.
Claim 4
Dependent Claim
12 words
The concentrate of claim 1 wherein the lithium salt is lithium hydroxide.
Claim 5
Dependent Claim
27 words
The degreasing composition consisting essentially of the concentrate of claim 1 and water in a volumetric proportion of concentrate to water of about 1:9 to about 1:1.
Claim 6
Dependent Claim
128 words
A process for controlling the formation of foam during the spray cleaning of greasy surfaces employing an aqueous cleaning solution consisting essentially of by weight about 0 to about 20 percent sequestering agent, about 1.5 to about 5 percent anionic surface active agent, about 0.1 to about 1.0 percent nonionic surface active agent, about 5 to about 50 percent of a compound selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium metaborate, sodium tetraborate, potassium metaborate, potassium tetraborate, monoethanolamine, diethanolamine, and triethanolamine, balance water, comprising adding a lithium salt, selected from the group consisting of lithium hydroxide, lithium carbonate, lithium bicarbonate, lithium chloride, lithium bromide, lithium nitrate, lithium sulfate and lithium hypochlorite, to said cleaning solution.
Claim 7
Dependent Claim
128 words
A process for controlling the formation of foam during the spray cleaning of greasy surfaces employing an aqueous cleaning solution consisting essentially of by weight about 0 to about 20 percent sequestering agent, about 1.5 to about 5 percent anionic surface active agent, about 0.1 to about 1.0 percent nonionic surface active agent, about 5 to about 50 percent of a compound selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium metaborate, sodium tetraborate, potassium metaborate, potassium tetraborate, monoethanolamine, diethanolamine, and triethanolamine, balance water, comprising adding a lithium salt, selected from the group consisting of lithium hydroxide, lithium carbonate, lithium bicarbonate, lithium chloride, lithium bromide, lithium nitrate, lithium sulfate and lithium hypochlorite, to said cleaning solution.
Claim 8
Dependent Claim
37 words
The process of claim 5 wherein said cleaning solution is an aqueous solution of the concentrate of claim 1 and the amount of lithium salt is from about 1.0 to about 5 weight percent of said concentrate.
Claim 9
Dependent Claim
23 words
The process of claim 6 wherein the amount of lithium salt is from about 2 to about 4 weight percent of said concentrate.
Claim 10
Dependent Claim
12 words
The process of claim 6 wherein the lithium salt is lithium hydroxide.
Claim 11
Dependent Claim
20 words
The process of claim 6 wherein the volume ratio of concentrate to water is from about 1:9 to about 1:1.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |