US4655953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent bleach compositions
Assignee: Lever Brothers Co
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Filing: 1984-12-05
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Granted: 1987-04-07
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Expires: 2004-12-05
Abstract
Abstract Detergent bleach compositions comprising a peroxide compound bleach, a manganese bleach catalyst and sodium sesquisilicate and/or sodium metasilicate, having a solution pH of from 9.5 to 13. The compositions show enhanced bleaching effect and are suitable for the laundering of fabrics at lower temperatures of between 20 DEG and 60 DEG C.
Inventors
- 👤 John Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3932; C11D3/02; C11D3/04; C11D3/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
Alkaline built laundry detergent bleach composition comprising: (a) from 1 to 50% by weight of an anionic surface active agent; (b) from 5 to 50% by weight of a peroxide compound bleach, which liberates hydrogen peroxide in aqueous solution; (c) a manganese compound which delivers manganese (II) ions in aqueous solution in an amount from 0.002 to 1.5% by weight of manganese (II); and (d) from 2 to 60% by weight of sodium sesquisilicate and/or sodium metasilicate, said composition having a solution pH of from 9.5 to 13.
Claim 2
Dependent Claim
88 words
Alkaline built laundry detergent bleach composition comprising: (a) from 1 to 50% by weight of an anionic surface active agent; (b) from 5 to 50% by weight of a peroxide compound bleach, which liberates hydrogen peroxide in aqueous solution; (c) a manganese compound which delivers manganese (II) ions in aqueous solution in an amount from 0.002 to 1.5% by weight of manganese (II); and (d) from 2 to 60% by weight of sodium sesquisilicate and/or sodium metasilicate, said composition having a solution pH of from 9.5 to 13.
Claim 3
Dependent Claim
17 words
Detergent bleach composition according to claim 1, comprising from 0.01 to 0.5% by weight of manganese (II).
Claim 4
Dependent Claim
21 words
Detergent bleach composition according to claim 1, comprising from 4 to 12% by weight of said sodium sesquisilicate and/or sodium metasilicate.
Claim 5
Dependent Claim
16 words
Detergent bleach composition according to claim 1, having a solution pH of from 10.5 to 13.
Claim 6
Dependent Claim
34 words
Detergent bleach composition according to claim 1 further comprising from 1 to 50% by weight of a surface active agent selected from the group consisting of nonionic, zwitterionic and cationic detergents and mixtures 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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |