US4530775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable liquid detergent suspensions
Assignee: Lever Brothers Co
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Filing: 1982-11-08
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Granted: 1985-07-23
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Expires: 2002-11-08
Abstract
Abstract Liquid media, capable of stably suspensing undissolved particulate material, comprise, in an aqueous medium, an anionic detergent, a non condensed phosphate electrolyte and a fatty acid monoalkylolamide. Such media, and the suspensions of undissolved particulate material therein, have a significantly improved shear stability. The media are particularly useful to suspend particulate abrasive material to yield liquid abrasive cleaning compositions.
Inventors
- 👤 John M. Brierley
- 👤 Melvin Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/32; C11D1/00; C11D1/38; C11D1/52; C11D1/523; C11D17/00; C11D17/0008; C11D17/0013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
An aqueous liquid abrasive cleaning composition comprising 1-65% of a non-colloidal undissolved particulate abrasive material stably suspended in an aqueous liquid medium, said medium comprising from 0.5 to 15% by weight of an anionic detergent active material, from 1 to 6% by weight of an electrolyte salt mixture of sodium carbonate and sodium tripolyphosphate dissolved in said aqueous liquid medium, and from 0.3 to 5% by weight of C 8 -C 24 fatty acid monoalkylolamide wherein the alkylol group contains from 1 to 4 carbon atoms.
Claim 2
Dependent Claim
86 words
An aqueous liquid abrasive cleaning composition comprising 1-65% of a non-colloidal undissolved particulate abrasive material stably suspended in an aqueous liquid medium, said medium comprising from 0.5 to 15% by weight of an anionic detergent active material, from 1 to 6% by weight of an electrolyte salt mixture of sodium carbonate and sodium tripolyphosphate dissolved in said aqueous liquid medium, and from 0.3 to 5% by weight of C 8 -C 24 fatty acid monoalkylolamide wherein the alkylol group contains from 1 to 4 carbon atoms.
Claim 3
Dependent Claim
29 words
A composition according to claim 1, wherein the dissolved electrolyte salt comprises from 1 to 6% by weight of a 1:1 w/w mixture of sodium carbonate and sodium tripolyphosphate.
Claim 4
Dependent Claim
74 words
A composition according to claim 1, further comprising from 0.3 to 5% by weight of a nonionic detergent selected from the group consisting of alkylene oxide condensation products with linear primary C 8 -C 18 alcohols, with linear secondary C 8 -C 18 alcohols, with C 8 -C 18 fatty acid amides, with C 8 -C 18 fatty acid alkylolamides containing more than one alkylene oxide unit, and with C 9 -C 18 alkylphenols.
References Cited (Backward Citations)
US2992993A
Cited
GB882569A
Cited
GB938783A
Cited
GB955081A
Cited
GB939366A
Cited
US3210286A
Cited
GB1370377A
Cited
US4155882A
Cited
US3935129A
Cited
US3956158A
Cited
US4174304A
Cited
GB1516977A
Cited
GB1534680A
Cited
US4302347A
Cited
US4233172A
Cited
EP0050887A1
Cited
US4397755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |