US5080822A
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US
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Aqueous degreaser compositions containing an organic solvent and a solubilizing coupler
Assignee: Buckeye International Inc
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Filing: 1990-04-10
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Granted: 1992-01-14
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Expires: 2010-04-10
Abstract
Abstract Stable, aqueous degreaser compositions are formulated in the form of totally water soluble solutions containing at least one sparingly soluble organic solvent having specified compositional characteristics, a solubilizing coupler and water. The solubilizing coupler has a surface tension in excess of approximately 45 dynes/cm (at concentrations of approximately 0.01-1.0%) and is present in an amount not substantially exceeding twenty-five percent more than the minmum amount required to completely solubilize the organic solvent. The compositions so formulated exhibit markedly improved degreasing efficacy.
Inventors
- 👤 Donald N. VanEenam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:03
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/22; C11D7/26; C11D7/261; C11D3/00; C11D3/16; C11D3/34; C11D3/3472; C11D7/50; C11D7/5004; C11D7/5022; C23; C23G; C23G1/00; C23G1/24; C11D3/3409; C11D3/3418; C11D7/263; C11D7/264; C11D7/266; C11D7/32; C11D7/3218; C11D7/3281; C11D7/34; C11D7/36
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
172 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution comprising at least one sparingly water soluble organic solvent, an organic solubilizing coupler and water and being free from foaming surfactants; (a) said sparingly water soluble organic solvent being characterized by: (i) having a water solubility in the range of approximately 0.2 to approximately 6 weight percent; (ii) not being a hydrocarbon or halocarbon; (iii) having one or more similar or dissimilar oxygen, nitrogen, sulfur, or phosphorous containing functional groups; (iv) being a solvent for hydrophobic soilants; and (v) being present in an amount exceeding its aqueous solubility in the absence of a solubilizing coupler; and; (b) said solubilizing coupler being an organic solubilizing coupler having a hydroprobe chain length in the range of C 4 to C 10 and an aqueous surface tension in excess of approximately 45 dynes/cm (at concentrations of approximately 0.01-1.0%) and being present in an amount not substantially exceeding twenty-five percent more than the minimum amount required to completely solubilize said organic solvent.
Claim 2
Dependent Claim
172 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution comprising at least one sparingly water soluble organic solvent, an organic solubilizing coupler and water and being free from foaming surfactants; (a) said sparingly water soluble organic solvent being characterized by: (i) having a water solubility in the range of approximately 0.2 to approximately 6 weight percent; (ii) not being a hydrocarbon or halocarbon; (iii) having one or more similar or dissimilar oxygen, nitrogen, sulfur, or phosphorous containing functional groups; (iv) being a solvent for hydrophobic soilants; and (v) being present in an amount exceeding its aqueous solubility in the absence of a solubilizing coupler; and; (b) said solubilizing coupler being an organic solubilizing coupler having a hydroprobe chain length in the range of C 4 to C 10 and an aqueous surface tension in excess of approximately 45 dynes/cm (at concentrations of approximately 0.01-1.0%) and being present in an amount not substantially exceeding twenty-five percent more than the minimum amount required to completely solubilize said organic solvent.
Claim 3
Dependent Claim
32 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein water solubilizing coupler is present in an amount not substantially exceeding that minimally required to completely solubilize said organic solvent.
Claim 4
Dependent Claim
30 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent has a water solubility in the range of approximately 1 to approximately 2.5 weight percent.
Claim 5
Dependent Claim
29 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is selected from the group consisting of esters, alcohols, ketones, aldehydes, ethers, and nitriles.
Claim 6
Dependent Claim
29 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is further characterized by having a high flash point in excess of 60° C.
Claim 7
Dependent Claim
45 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solvent is selected from the group consisting of 2-phenoxyethanol, 1-phenoxy-2-propanol, dipropylene glycol mono-n-butyl ether, β-phenylethanol, acetophenone, benzyl alcohol, butoxyethyl acetate, isophorone, and the dimethyl esters of mixed succinic, glutaric, and adipic acids.
Claim 8
Dependent Claim
95 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is selected from the group consisting of sodium cumene sulfonate, sodium xylene sulfonate, sodium 2-ethylhexyl sulfate, sodium octane-1-sulfonate, sodium butoxyethoxy acetate, sodium pelargonate, sodium condensed naphthalenesulfonic acid, sodium (lower) alkylnaphthalene sulfonate, sodium toluene sulfonate, sodium diisobutyl sulfosuccinate, sodium benzene sulfonate, potassium ethylbenzene sulfonate, potassium dimethylnaphthalene sulfonate, ammonium xylene sulfonate, sodium diphenyoxide disulfonate, ammonium n-butoxyethyl sulfate, sodium 2-ethylhexanoate, sodium n-butoxymethyl carboxylate, potassium mono/di phenoxyethyl phosphate, sodium mono/di n-butoxyethyl phosphate, triethanolamine trimethylolpropane phosphate, sodium amyloamphoproprionate, disodium capryloiminodipropionate, and sodium butryo imidazoline amphoglycinate.
Claim 9
Dependent Claim
41 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said water soluble solution additionally comprises one or more optional adjuvants selected from the group consisting of chelants, thickeners, builders, fragrances, dyes, pH adjustants, anti-corrosion additives, and anti-rust additives.
Claim 10
Dependent Claim
17 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is 2-phenoxyethanol.
Claim 11
Dependent Claim
17 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is 1-phenoxy-2-propanol.
Claim 12
Dependent Claim
20 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is dipropylene glycol mono-n-butyl ether.
Claim 13
Dependent Claim
18 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is benzyl alcohol.
Claim 14
Dependent Claim
17 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said organic solvent is acetophenone.
Claim 15
Dependent Claim
19 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is sodium cumene sulfonate.
Claim 16
Dependent Claim
19 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is sodium xylene sulfonate.
Claim 17
Dependent Claim
18 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is sodium octane-1-sulfonate.
Claim 18
Dependent Claim
19 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is sodium 2-ethylhexyl sulfate.
Claim 19
Dependent Claim
18 words
A stable, aqueous degreaser composition as set forth in claim 1 wherein said solubilizing coupler is sodium pelargonate.
Claim 20
Dependent Claim
56 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) 2-phenoxyethanol is an amount exceeding its aqueous solubility; (b) sodium cumene sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 2-phenoxyethanol; and (c) water.
Claim 21
Dependent Claim
56 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) 2-phenoxyethanol is an amount exceeding its aqueous solubility; (b) sodium cumene sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 2-phenoxyethanol; and (c) water.
Claim 22
Dependent Claim
56 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) 1-phenoxy-2-propanol in an amount exceeding its aqueous solubility; (b) sodium 2-ethylhexyl sulfate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 1-phenoxy-2-propanol; and (c) water.
Claim 23
Dependent Claim
56 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) 1-phenoxy-2-propanol in an amount exceeding its aqueous solubility; (b) sodium 2-ethylhexyl sulfate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said 1-phenoxy-2-propanol; and (c) water.
Claim 24
Dependent Claim
57 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) benzyl alcohol in an amount exceeding its aqueous solubility; (b) sodium octane-1-sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said benzyl alcohol; and (c) water.
Claim 25
Dependent Claim
57 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) benzyl alcohol in an amount exceeding its aqueous solubility; (b) sodium octane-1-sulfonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said benzyl alcohol; and (c) water.
Claim 26
Dependent Claim
61 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) dipropylene glycol mono-n-butyl ether in an amount exceeding its aqueous solubility; (b) sodium pelargonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said dipropylene glycol mono-n-butyl ether; and (c) water.
Claim 27
Dependent Claim
61 words
A stable, aqueous degreaser composition in the form of a totally water soluble solution and being free from foaming surfactants comprising: (a) dipropylene glycol mono-n-butyl ether in an amount exceeding its aqueous solubility; (b) sodium pelargonate in an amount not substantially exceeding twenty-five percent more than the amount minimally required to completely solubilize said dipropylene glycol mono-n-butyl ether; and (c) water.
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |