US4950416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dishwasher detergent composition
Assignee: Vista Chemical Co
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Filing: 1988-10-19
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Granted: 1990-08-21
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Expires: 2008-10-19
Abstract
Abstract The present invention is directed to an improved automatic dishwashing detergent composition. More particularly, the present invention comprises an aqueous, thixotropic automatic dishwasher composition containing a thickener comprised of an aqueous alumina dispersion and a stabilizer selected from the group consisting of a long chain fatty acid, the metal salt of a long chain fatty acid and mixtures thereof.
Inventors
- 👤 Steven L. Baxter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/1213; C11D3/395; C11D3/3956
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
130 words
In an aqueous, thioxtropic automatic dishwasher composition containing from about 20% to about 70% by weight water, from about 2.5% to about 20% by weight sodium silicate, from about 8% to about 33% by weight of an alkali metal polyphosphate, an amount of a chlorine bleach compound sufficient to provide about 0.2% to about 4% by weight of available chlorine and from about 0.1% to about 5% by weight of a bleach stable, water-dispersible organic detergent active material, the improvement comprising a thickener comprised of from about 15% to about 35% by weight of an aqueous alumina dispersion and from about 0.2% to about 2% by weight of a stabilizer comprising a mixture of a long chain fatty acid and the polyvalent metal salt of a long chain fatty acid.
Claim 2
Dependent Claim
130 words
In an aqueous, thioxtropic automatic dishwasher composition containing from about 20% to about 70% by weight water, from about 2.5% to about 20% by weight sodium silicate, from about 8% to about 33% by weight of an alkali metal polyphosphate, an amount of a chlorine bleach compound sufficient to provide about 0.2% to about 4% by weight of available chlorine and from about 0.1% to about 5% by weight of a bleach stable, water-dispersible organic detergent active material, the improvement comprising a thickener comprised of from about 15% to about 35% by weight of an aqueous alumina dispersion and from about 0.2% to about 2% by weight of a stabilizer comprising a mixture of a long chain fatty acid and the polyvalent metal salt of a long chain fatty acid.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein said thickener is present in an amount of from about 15% to about 35% by weight.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said polyvalent metal salt comprises aluminum stearate.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein the stabilizing agent comprises a polyvalent metal salt of stearic acid and stearic acid.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein said polyvalent metal comprises aluminum.
Claim 7
Dependent Claim
11 words
The composition of claim 1 further including an alkali metal carbonate.
Claim 8
Dependent Claim
24 words
The composition of claim 6 wherein said alkali metal carbonate is present in an amount of from about 2% to about 9% by weight.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein said alkali metal carbonate comprises sodium carbonate.
Claim 10
Dependent Claim
11 words
The composition of claim 1 further including an alkali metal hydroxide.
Claim 11
Dependent Claim
24 words
The composition of claim 9 wherein said alkali metal hydroxide is present in an amount of from about 0.5% to about 3% by weight.
Claim 12
Dependent Claim
13 words
The composition of claim 10 wherein said alkali metal hydroxide comprises sodium hydroxide.
Claim 13
Dependent Claim
13 words
The composition of claim 1 further including a chlorine bleach stable foam depressant.
Claim 14
Dependent Claim
21 words
The composition of claim 1 wherein said chlorine bleach compound provides about 0.8% to about 1.6% by weight of available chlorine.
Claim 15
Dependent Claim
15 words
The composition of claim 13 wherein said chlorine bleach compound comprises an alkali metal hypochlorite.
Claim 16
Dependent Claim
13 words
The composition of claim 14 wherein said alkali metal hypochlorite comprises sodium hypochlorite.
Claim 17
Dependent Claim
53 words
A composition for thickening automatic dishwasher liquids comprising from about 15% to about 35% by weight of an aqueous alumina dispersion and from about 0.2% to about 2% by weight of a stabilizer comprising a mixture of a long chain fatty acid and the polyvalent metal salt of a long chain fatty acid.
Claim 18
Dependent Claim
53 words
A composition for thickening automatic dishwasher liquids comprising from about 15% to about 35% by weight of an aqueous alumina dispersion and from about 0.2% to about 2% by weight of a stabilizer comprising a mixture of a long chain fatty acid and the polyvalent metal salt of a long chain fatty acid.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |