Patent JPS61203271A successfully refreshed from Google Patents.
US4680131A
Expired / Lapsed
US
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Detergent compositions
Assignee: Procter and Gamble Co
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Filing: 1986-01-13
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Granted: 1987-07-14
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Expires: 2006-01-13
Abstract
Abstract Laundry detergent compositions comprising from about 2% to about 60% of organic surfactant, from about 1% to about 20% of smectite-type clay selected from saponites, hectorites and sodium and calcium montmorillonites, from about 0.001 to about 0.4 mmoles % of copper precomplexed with an aminopolycarboxylate sequestrant, and from about 0.5% to about 50% of peroxygen bleaching agent and/or peroxygen bleach percursor therefor. The compositions provide improved bleaching activity.
Inventors
- 👤 Alfred Busch
- 👤 James C. T. B. St. Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:14
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3935; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/126; C11D3/16; C11D3/26; C11D3/33; C11D3/3932
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A laundry detergent composition comprising: (a) from about 2% to about 60% of organic surfactant selected from the group consisting of anionic, nonionic, cationic, ampholytic and zwitterionic surfactants of the mixture thereof; (b) from about 1% to about 20% of smectite-type clay selected from the group consisting of saponites, hectorites and sodium and calcium montmorillonites and mixtures thereof, (c) from about 0.005 to about 0.02 mmoles % of copper precomplexed with aminopolycarboxylate sequestrant having a logarithmic copper stability constant of at least about 11, said aminopolycarboxylate sequestrant being selected from the group consisting of ethylenediaminetetraacetric acid, diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminediacetic acid, nitrilotriacetic acid, mixtures thereof and water-soluble salts, thereof, and (d) from about 0.5% to about 50% of perborate bleaching agent.
Claim 2
Dependent Claim
120 words
A laundry detergent composition comprising: (a) from about 2% to about 60% of organic surfactant selected from the group consisting of anionic, nonionic, cationic, ampholytic and zwitterionic surfactants of the mixture thereof; (b) from about 1% to about 20% of smectite-type clay selected from the group consisting of saponites, hectorites and sodium and calcium montmorillonites and mixtures thereof, (c) from about 0.005 to about 0.02 mmoles % of copper precomplexed with aminopolycarboxylate sequestrant having a logarithmic copper stability constant of at least about 11, said aminopolycarboxylate sequestrant being selected from the group consisting of ethylenediaminetetraacetric acid, diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminediacetic acid, nitrilotriacetic acid, mixtures thereof and water-soluble salts, thereof, and (d) from about 0.5% to about 50% of perborate bleaching agent.
Claim 3
Dependent Claim
40 words
A composition according to claim 1 wherein the copper complex is incorporated in a water-soluble or water-dispersible organic carrier having a melting point greater than about 30° C. and/or in a water-soluble or water-dispersible agglomerated matrix of solid inorganic diluent.
Claim 4
Dependent Claim
21 words
A composition according to claim 1 wherein the smectite-type clay has a cation-exchange capacity of at least about 50 meq/100 g.
Claim 5
Dependent Claim
21 words
A composition according to claim 1 wherein the aminopolycarboxylate sequestrant is ethylenediaminetetraacetic acid and the perborate bleaching agent is sodium perborate.
Claim 6
Dependent Claim
8 words
The composition of claim 1 which is granular.
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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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |