Patent US4470919A successfully refreshed from Google Patents.
US4470919A
Expired / Lapsed
US
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Oxygen-bleach-containing liquid detergent compositions
Assignee: Procter and Gamble Co
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Filing: 1983-01-24
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Granted: 1984-09-11
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Expires: 2003-01-24
Abstract
Abstract Oxygen-bleach-containing liquid detergent compositions capable of providing remarkable cleaning and bleaching performance over a prolonged period of time are disclosed. The oxygen-bleach component is usually represented by hydrogen peroxide or equivalent addition products. The oxygen-bleach is stabilized with the aid of a binary system, namely: fatty acids and water soluble calcium salts, with the further understanding that the compositions are substantially free of conventional detergent polyphosphate. These bleach-containing liquid detergents are especially useful in boil-wash laundry treatments.
Inventors
- 👤 Pierre Goffinet
- 👤 Ivan Herbots
- 👤 Santiago Tapia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:35
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/16; C11D3/20; C11D3/2075; C11D3/2079; C11D3/38; C11D3/386; C11D3/38618; C11D3/3947; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
An aqueous liquid detergent containing, (a) from 10% to 60% by weight of an anionic, nonionic, or zwitterionic surface-active agent or mixtures thereof; and (b) from 1% to 20% by weight of hydrogen peroxide; (c) from 5% to 30% by weight of a fatty acid having from 8 to 24 carbon atoms, whereby the weight ratio of (a) to (c) is equal to or greater than 1; and (d) a water-soluble calcium salt to provide at least 5.10 -3 mole calcium per liter of the liquid detergent, said detergent being substantially free of polyphosphates; and having a pH, as is at 20° C., below 9.
Claim 2
Dependent Claim
105 words
An aqueous liquid detergent containing, (a) from 10% to 60% by weight of an anionic, nonionic, or zwitterionic surface-active agent or mixtures thereof; and (b) from 1% to 20% by weight of hydrogen peroxide; (c) from 5% to 30% by weight of a fatty acid having from 8 to 24 carbon atoms, whereby the weight ratio of (a) to (c) is equal to or greater than 1; and (d) a water-soluble calcium salt to provide at least 5.10 -3 mole calcium per liter of the liquid detergent, said detergent being substantially free of polyphosphates; and having a pH, as is at 20° C., below 9.
Claim 3
Dependent Claim
30 words
The liquid composition in accordance with claim 1, wherein at least 50% by weight of the fatty acid is a saturated fatty acid having from 10 to 16 carbon atoms.
Claim 4
Dependent Claim
30 words
The liquid composition in accordance with claim 1, wherein the calcium salt is selected from the group consisting of: calcium chloride; calcium propionate; calcium ascorbate, calcium lactate, and calcium acetate.
Claim 5
Dependent Claim
26 words
The liquid composition in according with claim 2, wherein the saturated fatty acids are lauric and myristic acids in a weight ratio of 5:1 to 1:1.
Claim 6
Dependent Claim
24 words
The liquid composition in accordance with claim 1, which, in addition, contains from 0.5% to 5% by weight of a water-soluble cationic surface-active agent.
Claim 7
Dependent Claim
48 words
The liquid composition in accordance with claim 1, which, in addition, contains from 0.1% to 2% by weight of an alkylene-amino phosphonic acid or its water-soluble alkali or ammonium salts, said phosphonic acid being selected from the group of: ethylenediaminetetramethylenephosphonic acid; hexamethylenediaminetetramethylenephosphonic acid; diethylenetriaminepentamethylenephosphonic acid; and, aminotrimethylenephosphonic acid.
Claim 8
Dependent Claim
40 words
The liquid composition in accordance with claim 1, which, in addition, comprises from 5% to 20% by weight of a phase regulant selected from lower alcohols having from 2 to 6 carbon atoms and from 1 to 3 hydroxyl groups.
Claim 9
Dependent Claim
25 words
The liquid composition in accordance with claim 1, which, in addition, contains from 0.05% to 1% by weight of a mixture of proteases and amylases.
Claim 10
Dependent Claim
22 words
The liquid composition in accordance with claim 5, wherein the cationic surfactant is selected from N-cocoyltrimethylammonium chloride; N-lauryldimethylbenzyl ammonium methosulfate; N-myristyl-di(hydroxyethyl)-methylammonium bromide.
Claim 11
Dependent Claim
32 words
The liquid composition in accordance with claim 1, which, in addition, contains from 0.1% to 1% by weight of ethylenediaminetetraacetic acid or diethylenetriaminepentaacetic acid or the water-soluble alkali or ammonium salts thereof.
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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) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |