US4259200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bleaching and cleaning compositions
Assignee: Lever Brothers Co
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Filing: 1980-03-31
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Granted: 1981-03-31
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Expires: 2000-03-31
Abstract
Abstract The stability of ethylene diamine tetra-(methylene phosphate)-EDTMA-and diethylene triamine penta-(methylene phosphonate)-DTPMP-incorporated as peracid stabilizer in bleaching and cleaning compositions comprising a percompound and an organic activator for said percompound is improved if said phosphonate compound is present as a complex of a metal ion selected from the group consisting of calcium, magnesium, zinc and aluminium ions, the molar ratio of said metal ion to said phosphonate compound in the complex being at least 1:1. Compositions comprising a percompound bleach, an organic activator and said metal complex of EDTMP or of DTPMP are provided.
Inventors
- 👤 Peter S. Sims
- 👤 Robin S. Heslam
- 👤 Richard L. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/16; C11D3/36; C11D3/364; C11D3/3937
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
A bleaching and cleaning composition comprising a percompound bleach, an activator for said percompound bleach and an organic phosphonate compound, selected from the group consisting of ethylene diamine tetra-methylene phosphonate -"EDTMP", and diethylene triamine penta-(methylene phosphonate) - "DTPMP", and mixtures thereof, wherein said organic phosphonate compound is present as a complex of a metal ion selected from the group consisting of calcium, magnesium, zinc and aluminium ions, the molar ratio of said metal ion to said phosphonate compound being at least 1:1.
Claim 2
Dependent Claim
82 words
A bleaching and cleaning composition comprising a percompound bleach, an activator for said percompound bleach and an organic phosphonate compound, selected from the group consisting of ethylene diamine tetra-methylene phosphonate -"EDTMP", and diethylene triamine penta-(methylene phosphonate) - "DTPMP", and mixtures thereof, wherein said organic phosphonate compound is present as a complex of a metal ion selected from the group consisting of calcium, magnesium, zinc and aluminium ions, the molar ratio of said metal ion to said phosphonate compound being at least 1:1.
Claim 3
Dependent Claim
25 words
A bleaching and cleaning composition according to claim 1, wherein said molar ratio of said metal ion to said phosphonate compound is at least 2:1.
Claim 4
Dependent Claim
29 words
A bleaching and cleaning composition according to claim 1, wherein said metal complex is present in an amount of from 0.01 to 5.0% by weight, calculated as phosphonic acid.
Claim 5
Dependent Claim
22 words
A bleaching and cleaning composition according to claim 3, wherein said amount of metal complex is from 0.05 to 2.0% by weight.
Claim 6
Dependent Claim
19 words
A bleaching and cleaning composition according to claim 1, which comprises 5 to 35% by weight of percompound bleach.
Claim 7
Dependent Claim
26 words
A bleaching and cleaning composition according to claim 1, wherein said activator is present in a ratio by weight to the percompound of 1:1 to 1:35.
Claim 8
Dependent Claim
17 words
A bleaching and cleaning composition according to claim 6, wherein said ratio is from 1:2 to 1:20.
Claim 9
Dependent Claim
19 words
A bleaching and cleaning composition according to claim 6, which comprises 0.15 to 30% by weight of said activator.
Claim 10
Dependent Claim
19 words
A bleaching and cleaning composition according to claim 8, which comprises 0.25 to 15% by weight of said activator.
Claim 11
Dependent Claim
32 words
A bleaching and cleaning composition according to claim 1, which further comprises 5 to 40% by weight of a detergent active material and 10 to 60% by weight of a detergency builder.
Claim 12
Dependent Claim
21 words
A bleaching and cleaning composition according to claim 1, wherein said complex is a calcium, zinc or aluminium complex of EDTMP.
Claim 13
Dependent Claim
16 words
A bleaching and cleaning composition according to claim 1, wherein said percompound bleach is sodium perborate.
Claim 14
Dependent Claim
15 words
A bleaching and cleaning composition according to claim 1, wherein said activator is N,N,N'N'-tetraacetylethylene diamine.
References Cited (Backward Citations)
US4110242A
Cited
US4129517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |