US4824592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspending system for insoluble peroxy acid bleach
Assignee: Lever Brothers Co
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Filing: 1988-03-25
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Granted: 1989-04-25
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Expires: 2008-03-25
Abstract
Abstract An aqueous liquid bleaching composition is described having a pH from 1 to 6.5 and comprising a solid, particulate, substantially water-insoluble organic peroxy acid such as diperoxydodecanedioic acid. This peroxy acid is stably suspended in the aqueous liquid by a structurant combination of secondary alkane sulfonate and fatty acid.
Inventors
- 👤 Mark E. Rerek
- 👤 Michael P. Aronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:58
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3947
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
68 words
An aqueous liquid bleaching composition having a pH of from 1 to 6.5 comprising: (i) from 1 to 40% by weight of a solid, particulate, substantially water-insoluble organic peroxy acid; (ii) from 1 to 30% by weight of a C 8 -C 22 secondary alkane sulfonate; and (iii) a fatty acid present in an amount sufficient to stabilize said peroxy acid against phase separation from the aqueous liquid.
Claim 2
Dependent Claim
68 words
An aqueous liquid bleaching composition having a pH of from 1 to 6.5 comprising: (i) from 1 to 40% by weight of a solid, particulate, substantially water-insoluble organic peroxy acid; (ii) from 1 to 30% by weight of a C 8 -C 22 secondary alkane sulfonate; and (iii) a fatty acid present in an amount sufficient to stabilize said peroxy acid against phase separation from the aqueous liquid.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein said peroxy acid is 1,12-diperoxydodecanedioic acid.
Claim 4
Dependent Claim
13 words
A composition according to claim 1 wherein said peroxy acid is 4,4'-sulfonylbisperoxybenzoic acid.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 wherein said fatty acid is a C 12 -C 18 fatty alkyl monocarboxylic acid.
Claim 6
Dependent Claim
30 words
A composition according to claim 4 wherein said C 12 -C 18 fatty acid is selected from the group consisting of lauric, myristic, palmitic, margaric, stearic and acid mixtures thereof.
Claim 7
Dependent Claim
22 words
A composition according to claim 1 wherein said peroxy acid is present in an amount between about 2 and 10% by weight.
Claim 8
Dependent Claim
23 words
A composition according to claim 1 wherein said secondary alkane sulfonate is present in an amount between about 5 and 20% by weight.
Claim 9
Dependent Claim
23 words
A composition according to claim 1 wherein said secondary alkane sulfonate is present in an amount between about 8 and 10% by weight.
Claim 10
Dependent Claim
23 words
A composition according to claim 1 wherein the fatty acid is present in an amount from about 0.5 to about 10% by weight.
Claim 11
Dependent Claim
22 words
A composition according to claim 1 wherein the fatty acid is present in an amount from about 2 to 3% by weight.
Claim 12
Dependent Claim
26 words
A composition according to claim 1 having a viscosity from 0.05 to 20 PaS measured at a shear rate of 21 sec -1 at 25° C.
Claim 13
Dependent Claim
17 words
A composition according to claim 1 further comprising from about 1 to about 10% additional hydrogen peroxide.
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |