US4822510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stably suspended 4,4'-sulfonylbisperoxybenzoic acid bleach in an aqueous liquid
Assignee: Lever Brothers Co
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Filing: 1988-03-25
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Granted: 1989-04-18
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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 4,4'-sulfonylbisperoxybenzoic acid stably suspended by a surfactant system.
Inventors
- 👤 Stephen A. Madison
- 👤 Leonora M. Ilardi
- 👤 Patricia Liberati
- 👤 Joshua Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3947; C11D1/00; C11D1/66; C11D1/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
An aqueous liquid bleaching composition having a pH from 4 to 4.5 consisting essentially of: (i) 7% of sodium alkylbenzene sulfonate; (ii) 3% of C 14 -C 15 primary alcohol condensed with 7 moles ethylene oxide; (iii) 7% of sodium sulfate; (iv) 5.8% of 4,4'-sulfonylbisperoxybenzoic acid; (v) 0.04% of hydroxyethylidenediphosphonic acid; (vi) 0.2% of fluorescer; and wherein said 4,4'-sulfonylbisperoxybenzoic acid has a particle size ranging from 30 to 250 microns.
Claim 2
Dependent Claim
70 words
An aqueous liquid bleaching composition having a pH from 4 to 4.5 consisting essentially of: (i) 7% of sodium alkylbenzene sulfonate; (ii) 3% of C 14 -C 15 primary alcohol condensed with 7 moles ethylene oxide; (iii) 7% of sodium sulfate; (iv) 5.8% of 4,4'-sulfonylbisperoxybenzoic acid; (v) 0.04% of hydroxyethylidenediphosphonic acid; (vi) 0.2% of fluorescer; and wherein said 4,4'-sulfonylbisperoxybenzoic acid has a particle size ranging from 30 to 250 microns.
References Cited (Backward Citations)
US3996152A
Cited
US4017412A
Cited
US4642198A
Cited
US4681592A
Cited
US4655781A
Cited
EP0176124A2
Cited
EP0240481A1
Cited
US4758369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |