Patent US4155871A successfully refreshed from Google Patents.
US4155871A
Expired / Lapsed
US
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Detergent compositions
Assignee: Lever Brothers Co
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Filing: 1977-04-22
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Granted: 1979-05-22
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Expires: 1997-04-22
Abstract
Abstract A pourable liquid detergent composition, particularly one containing hypochlorite, comprises an aqueous detergent solution having a yield stress value at 20° C. of from 1 to 21 dynes/cm 2 , and dispersed solid particles of a sparingly water-soluble alkaline buffer, particularly calcium or magnesium hydroxide, providing a pH within the range of from 10 to 13.
Inventors
- 👤 Robert Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0008; C11D17/0013; C11D1/00; C11D1/66; C11D1/83; C11D17/0026; C11D3/00; C11D3/0005; C11D3/0047; C11D3/02; C11D3/12; C11D3/1213; C11D3/395; C11D3/3956; C11D1/02; C11D1/12; C11D1/14; C11D1/146; C11D1/75; C11D1/755; C11D1/79
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A pourable liquid detergent composition comprising an aqueous detergent solution having a yield stress value at 20° C. of from 1 to 21 dynes/cm 2 and a buffering amount of solid particles of an alkaline buffer having a solubility in water at 20° C. of 0.0005 to 0.2 parts by weight in 100 parts by weight of water and providing a pH within the range of from 10 to 13 dispersed in the solution and retained in the dispersed state by the yield value characterisitics of said solution.
Claim 2
Dependent Claim
88 words
A pourable liquid detergent composition comprising an aqueous detergent solution having a yield stress value at 20° C. of from 1 to 21 dynes/cm 2 and a buffering amount of solid particles of an alkaline buffer having a solubility in water at 20° C. of 0.0005 to 0.2 parts by weight in 100 parts by weight of water and providing a pH within the range of from 10 to 13 dispersed in the solution and retained in the dispersed state by the yield value characterisitics of said solution.
Claim 3
Dependent Claim
13 words
A composition according to claim 1, in which the buffer is calcium hydroxide.
Claim 4
Dependent Claim
13 words
A composition according to claim 1, in which the buffer is magnesium hydroxide.
Claim 5
Dependent Claim
31 words
A composition according to claim 1, containing at least two detergent-active compounds that exhibit micellar interaction in the solution and are present in sufficient amount to provide a yield stress value.
Claim 6
Dependent Claim
14 words
A composition according to claim 1, containing dispersed particulate solid other than the buffer.
References Cited (Backward Citations)
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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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |