US4477365A
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Caustic based aqueous cleaning composition
Assignee: Bayer Corp
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Filing: 1983-08-29
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Granted: 1984-10-16
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Expires: 2003-08-29
Abstract
Abstract Disclosed is a caustic based aqueous cleaning composition which is particularly suitable for use in cleaning soiled ovens. The composition, which has a viscosity of 200-2,000 centipoise at room temperature, comprises an alkali metal hydroxide, a fatty acid substituted betaine, a long-chain alpha olefin sulfonate and a hydrotropic agent.
Inventors
- 👤 Gilles M. L. Verboom
- 👤 Kenneth E. Bliznik
- 👤 Thomas L. Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/044; C11D1/00; C11D1/88; C11D1/94; C11D3/0005; C11D3/0057; C11D1/02; C11D1/12; C11D1/14; C11D1/143
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
97 words
A caustic based, aqueous cleaning composition which comprises on a weight/weight basis of 100% active material: (a) 7% to 10% of an alkali metal hydroxide; (b) 0.1% to 2.0% of a fatty acid substituted betaine, amido betaine, sulfo betaine, amido sulfo betaine or a mixture thereof; (c) 6% to 11% of one or a mixture of longchain alpha olefin sulfonates; and (d) a hydrotropic agent whose chemical structure and concentration are such as, in combination with ingredients (a), (b), and (c), to provide the cleaning composition with a viscosity of 200 to 2,000 centipoise at room temperature.
Claim 2
Dependent Claim
97 words
A caustic based, aqueous cleaning composition which comprises on a weight/weight basis of 100% active material: (a) 7% to 10% of an alkali metal hydroxide; (b) 0.1% to 2.0% of a fatty acid substituted betaine, amido betaine, sulfo betaine, amido sulfo betaine or a mixture thereof; (c) 6% to 11% of one or a mixture of longchain alpha olefin sulfonates; and (d) a hydrotropic agent whose chemical structure and concentration are such as, in combination with ingredients (a), (b), and (c), to provide the cleaning composition with a viscosity of 200 to 2,000 centipoise at room temperature.
Claim 3
Dependent Claim
93 words
The composition of claim 1 wherein the betaine is characterized by the formula: ##STR2## wherein y is 0 or 1, x is an integer from 2 to 4, R 1 is a chain derived from a fatty acid containing from 8 to 18 carbon atoms, R 2 .sup.⊖ is either CH 2 COO.sup.⊖ or CH 2 -CHOH-CH 2 SO 3 .sup.⊖ and R 3 is independently H or --CH 2 OH provided that R 3 can be --CH 2 OH only when y is 0 and R 2 .sup.⊖ is CH 2 COO.sup.⊖.
Claim 4
Dependent Claim
19 words
The composition of claim 2 wherein the R 1 chain is cocoyl, oleyl or talloyl and y is 0.
Claim 5
Dependent Claim
12 words
The composition of claim 3 wherein R 2 is CH 2 COO.sup.⊖.
Claim 6
Dependent Claim
17 words
The composition of claim 3 wherein R 2 is CH 2 -CHOH-CH 2 SO 3 63 .
Claim 7
Dependent Claim
22 words
The composition of claim 2 wherein the R 1 chain is cocoyl, oleyl or talloyl, y is 1 and x is 3.
Claim 8
Dependent Claim
12 words
The composition of claim 6 wherein R 2 is CH 2 COO.sup.⊖.
Claim 9
Dependent Claim
16 words
The composition of claim 6 wherein R 2 is CH 2 -CHOH-CH 2 SO 3 .sup.⊖.
Claim 10
Dependent Claim
26 words
The composition of claim 2 wherein R 1 is talloyl, y is 0, R 3 is --CH 2 OH and R 2 is CH 2 COO.sup.⊖.
Claim 11
Dependent Claim
15 words
The composition of claim 2 wherein at least one R 3 is --CH 2 OH.
Claim 12
Dependent Claim
19 words
The composition of claim 9 wherein R 1 is derived from soybean oil, coconut oil, tallow or hydrogenated tallow.
Claim 13
Dependent Claim
19 words
The composition of claim 9 wherein both R 3 moieties are --CH 2 OH and R 1 is talloyl.
Claim 14
Dependent Claim
45 words
The composition of claim 1 wherein the long-chain alpha olefin sulfonate is characterized in that it is obtained from the sulfonation of an n-alpha olefin of the structure: R--CH═CH.sub.2 wherein R is an alkyl chain of 8 to 18 carbon atoms or a mixture thereof.
Claim 15
Dependent Claim
60 words
The composition of claim 1 wherein the hydrotropic agent is a phosphate ester; a tridecyl oxypoly(ethylenoxy) ethanol with an ethylene oxide content of 9 to 15 moles per mole of tridecyl epoxy ethanol or an aromatic or polyaromatic sulfonate optionally substituted with 1 or more alkyl groups containing 1 to 4 carbon atoms or a sodium or potassium salt thereof.
Claim 16
Dependent Claim
24 words
The composition of claim 14 wherein the hydrotropic agent is sodium xylene sulfonate, sodium methyl naphthalene sulfonate, sodium cumene sulfonate or a mixture thereof.
Claim 17
Dependent Claim
12 words
The composition of claim 1 to which is added an opacifying pigment.
Claim 18
Dependent Claim
13 words
The composition of claim 16 wherein the opacifying pigment is rutile titanium dioxide.
Claim 19
Dependent Claim
17 words
The composition of claim 1 to which is added up to 1% by weight of chelating agent.
Claim 20
Dependent Claim
96 words
A caustic based, aqueous cleaning composition which comprises on a weight/weight basis of 100% active material: (a) from 8.9% to 9.5% sodium hydroxide; (b) from 7.2% to 8.8% of an alpha olefin sulfonate or a mixture of alpha olefin sulfonates obtained from the sulfonation of an n-alpha olefin of the formula: R--CH═CH.sub.2 wherein R is an alkyl chain of 8 to 18 carbon atoms; (c) from 0.3% to 0.8% of a dimethyl betaine or from 1.2% to 1.8% of a mono- or dihydroxyethyl substituted betaine; and (d) from 1.0% to 3.0% of methyl naphthalene sodium sulfonate.
Claim 21
Dependent Claim
96 words
A caustic based, aqueous cleaning composition which comprises on a weight/weight basis of 100% active material: (a) from 8.9% to 9.5% sodium hydroxide; (b) from 7.2% to 8.8% of an alpha olefin sulfonate or a mixture of alpha olefin sulfonates obtained from the sulfonation of an n-alpha olefin of the formula: R--CH═CH.sub.2 wherein R is an alkyl chain of 8 to 18 carbon atoms; (c) from 0.3% to 0.8% of a dimethyl betaine or from 1.2% to 1.8% of a mono- or dihydroxyethyl substituted betaine; and (d) from 1.0% to 3.0% of methyl naphthalene sodium sulfonate.
Claim 22
Dependent Claim
42 words
The composition of claim 19 wherein the amount of methyl naphthalene sodium sulfonate is that amount which, in combination with the sodium hydroxide, alpha olefin sulfonate and betaine, is sufficient to provide a composition having a viscosity of 500 to 800 centipoise.
Claim 23
Dependent Claim
19 words
The composition of claim 19 to which is added up to 3.0% of rutile titanium dioxide as opacifying agent.
Claim 24
Dependent Claim
22 words
The composition of claim 19 to which is added up to 1.0% of sodium ethylene diamine tetra acetate as a chelating agent.
Claim 25
Dependent Claim
12 words
The composition of claim 20 wherein the betaine is dimethyl oleyl betaine.
Claim 26
Dependent Claim
12 words
The composition of claim 20 wherein the betaine is dihydroxyethyl tallow betaine.
References Cited (Backward Citations)
US4421680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |