US4481129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleach compositions
Assignee: Lever Brothers Co
•
Filing: 1982-12-02
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Granted: 1984-11-06
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Expires: 2002-12-02
Abstract
Abstract Bleach compositions comprising a peroxide compound contain manganese (II) in an amount of 0.005 to 5% by weight and a carbonate compound which delivers carbonate ions in aqueous solution in an amount of 1 to 50% by weight of carbonate ions. The bleach compositions are suitable for bleaching fabrics at substantially all washing temperatures.
Inventors
- 👤 John Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3932
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
79 words
A bleach composition having an improved bleach performance at substantially all temperatures, comprising a peroxide compound selected from the group of hydrogen peroxide and inorganic persalts which liberate hydrogen peroxide in aqueous solution, a manganese compound which delivers manganese (II) ions in aqueous solution in an amount of 0.005 to 5% by weight of manganese (II), and a carbonate compound which delivers carbonate ions in aqueous solution in an amount of 1 to 50% by weight of carbonate ions.
Claim 2
Dependent Claim
79 words
A bleach composition having an improved bleach performance at substantially all temperatures, comprising a peroxide compound selected from the group of hydrogen peroxide and inorganic persalts which liberate hydrogen peroxide in aqueous solution, a manganese compound which delivers manganese (II) ions in aqueous solution in an amount of 0.005 to 5% by weight of manganese (II), and a carbonate compound which delivers carbonate ions in aqueous solution in an amount of 1 to 50% by weight of carbonate ions.
Claim 3
Dependent Claim
15 words
A bleach composition according to claim 1, which comprises 0.025-2.5% by weight of manganese (II).
Claim 4
Dependent Claim
15 words
A bleach composition according to claim 1, which comprises 5-35% by weight of carbonate ions.
Claim 5
Dependent Claim
22 words
A bleach composition according to claim 1, which comprises a manganese (II) salt selected from manganous sulphate, manganous chloride and mixtures thereof.
Claim 6
Dependent Claim
22 words
A bleach composition according to claim 1, which comprises a carbonate compound selected from alkalimetal carbonates and alkalimetal percarbonates and mixtures thereof.
Claim 7
Dependent Claim
18 words
A bleach composition according to claim 1, which further comprises from 2-50% by weight of a surface-active agent.
Claim 8
Dependent Claim
23 words
A bleach composition according to claim 1, which further comprises an alkaline detergency builder in an amount of up to 80% by weight.
Claim 9
Dependent Claim
15 words
A bleach composition according to claim 7, wherein the alkaline detergency builder is sodium triphosphate.
Claim 10
Dependent Claim
13 words
A bleach composition according to claim 7, which is free from sodium triphosphate.
Claim 11
Dependent Claim
14 words
A bleach composition according to claim 9, comprising 0.005-1% by weight of manganese (II).
References Cited (Backward Citations)
US3034851A
Cited
GB984459A
Cited
US3156654A
Cited
US3280039A
Cited
US3372125A
Cited
US3532634A
Cited
US4016090A
Cited
US4075116A
Cited
US4119557A
Cited
GB1598610A
Cited
US4299717A
Cited
EP0025608A2
Cited
EP0072166A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |