US5405413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching compounds comprising acyl valerolactam bleach activators
Assignee: Procter and Gamble Co
•
Filing: 1993-06-24
•
Granted: 1995-04-11
•
Expires: 2013-06-24
Abstract
Abstract Laundry detergents and bleaching systems comprise acyl valerolactam bleach activators. The bleach activators are effective under mixed soil conditions, especially mixtures of hydrophobic and hydrophilic soils and stains.
Inventors
- 👤 Alan D. Willey
- 👤 Michael E. Burns
- 👤 Shuichi Tsunetsugu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:09
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; C07D211/76; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/392
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
28 words
A laundry bleaching system comprising: i) at least about 0.1% by weight of a peroxygen bleaching compound; and ii) at least about 0.1% by weight of nonanoyl valerolactam.
Claim 2
Dependent Claim
28 words
A laundry bleaching system comprising: i) at least about 0.1% by weight of a peroxygen bleaching compound; and ii) at least about 0.1% by weight of nonanoyl valerolactam.
Claim 3
Dependent Claim
28 words
A laundry detergent composition comprising at least about 0.1% of the bleaching system according to claim 1 and at least about 1% by weight of conventional detergent ingredients.
Claim 4
Dependent Claim
32 words
A laundry detergent composition according to claim 2 wherein said conventional detergent ingredients comprise from about 5% to about 80% of a detersive surfactant; said peroxygen bleaching compound is percarbonate or perborate.
Claim 5
Dependent Claim
18 words
A laundry detergent composition according to claim 3 wherein said conventional detergent ingredients further comprise a protease enzyme.
Claim 6
Dependent Claim
20 words
A laundry detergent composition according to claim 4 further comprising from 0% to about 15% of a second bleach activator.
Claim 7
Dependent Claim
48 words
A liquid bleaching system composition comprising: a) from about 0.1% to about 10% by weight of a peroxygen bleaching compound comprising hydrogen peroxide or which is capable of yielding hydrogen peroxide in an aqueous solution; and b) from about 1% to about 25% by weight of nonanoyl valerolactam.
Claim 8
Dependent Claim
48 words
A liquid bleaching system composition comprising: a) from about 0.1% to about 10% by weight of a peroxygen bleaching compound comprising hydrogen peroxide or which is capable of yielding hydrogen peroxide in an aqueous solution; and b) from about 1% to about 25% by weight of nonanoyl valerolactam.
Claim 9
Dependent Claim
20 words
A liquid bleach composition according to claim 6 further comprising from about 1% to about 20% of a nonionic surfactant.
Claim 10
Dependent Claim
30 words
A method for cleaning fabrics, said method comprising contacting said fabrics in an aqueous liquor comprising a laundry detergent bleaching effective amounts of a bleaching system according to claim 1.
Claim 11
Dependent Claim
65 words
A method for cleaning fabrics in automatic washing machines having parts made of natural rubber which is susceptible to oxidative degradation, said method comprising agitating said fabrics in said machine in an aqueous liquor comprising a laundry detergent bleaching effective amount of a bleaching system according to claim 1 such that said natural rubber parts of said machine are substantially undamaged by the bleaching system.
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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) | 1998-04-10 | 1998-10-10 | 1999-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-10 | 2002-10-10 | 2003-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-10 | 2006-10-10 | 2007-04-11 | $7700.00 | Window Closed / Lapsed |