US4623357A
Expired / Lapsed
US
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Bleach compositions
Assignee: Lever Brothers Co
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Filing: 1985-04-02
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Granted: 1986-11-18
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Expires: 2005-04-02
Abstract
Abstract A bleaching composition is provided which comprises a catalyst having a water-soluble manganese (II) salt adsorbed onto a solid inorganic silicon support material, a peroxide compound, an alkali metal carbonate, and optionally a basic inorganic alkaline earth metal salt, wherein the pH of an aqueous solution containing said composition is 11.0 or higher.
Inventors
- 👤 Warren J. Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:59
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3935; C11D17/00; C11D17/0034; C11D3/3932
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
86 words
A bleaching composition comprising: (i) from about 1 to 40% of a catalyst comprising a water-soluble manganese (II) salt adsorbed onto a water-insoluble solid inorganic silicon support material, the ratio of manganese (II) salt to support material ranging from 1:1000 to 1:10; (ii) from about 0.1 to 40% of a peroxide compound; (iii) from about 0.1 to 50% of an alkali metal carbonate; and (iv) from about 0.1 to 40% of calcium hydroxide; the pH of an aqueous solution containing said composition being 11.0 or higher.
Claim 2
Dependent Claim
86 words
A bleaching composition comprising: (i) from about 1 to 40% of a catalyst comprising a water-soluble manganese (II) salt adsorbed onto a water-insoluble solid inorganic silicon support material, the ratio of manganese (II) salt to support material ranging from 1:1000 to 1:10; (ii) from about 0.1 to 40% of a peroxide compound; (iii) from about 0.1 to 50% of an alkali metal carbonate; and (iv) from about 0.1 to 40% of calcium hydroxide; the pH of an aqueous solution containing said composition being 11.0 or higher.
Claim 3
Dependent Claim
18 words
A bleaching composition according to claim 1 wherein calcium hydroxide is present from 2 to 25% by weight.
Claim 4
Dependent Claim
21 words
A bleaching composition according to claim 1 wherein is formed in situ from an alkaline metal hydroxide and a calcium salt.
Claim 5
Dependent Claim
26 words
A bleaching composition according to claim 3 wherein the alkaline metal hydroxide is sodium hydroxide and the calcium salt is a calcium halide, sulphate or nitrate.
Claim 6
Dependent Claim
15 words
A bleaching composition according to claim 1 wherein the alkali metal carbonate is sodium carbonate.
Claim 7
Dependent Claim
14 words
A bleaching composition according to claim 1 wherein the peroxide compound is sodium perborate.
Claim 8
Dependent Claim
32 words
A bleaching composition according to claim 1 wherein the peroxide compound is selected from the group consisting of hydrogen peroxide, organic peroxides and the inorganic salts of percarbonates, perphosphates, persilicates and persulphates.
Claim 9
Dependent Claim
19 words
A bleaching composition according to claim 1 further comprising from about 5% to about 35% of an inorganic phosphate.
Claim 10
Dependent Claim
26 words
A bleaching composition according to claim 8 wherein the inorganic phosphate is selected from the group consisting of salts of polyphosphate, pyrophosphate, orthophosphate and mixtures thereof.
Claim 11
Dependent Claim
19 words
A bleaching composition according to claim 1 further comprising from about 2% to 50% of a surface active compound.
Claim 12
Dependent Claim
28 words
A bleaching composition according to claim 10 wherein the surface active comound is selected from the group consisting of anionic, nonionic, zwitterionic, amphoteric, cationic compounds or mixtures thereof.
Claim 13
Dependent Claim
17 words
A bleaching composition according to claim 1 wherein the solid inorganic silicon support material is a zeolite.
Claim 14
Dependent Claim
32 words
A bleaching composition according to claim 1 wherein the solid inorganic silicon support material is selected from the group consisting of magnesium silicate, aluminated silicates, silica gels, aluminas, clays and mixtures thereof.
Claim 15
Dependent Claim
17 words
A bleaching composition according to claim 1 further comprising from 0 to 80% of a builder salt.
Claim 16
Dependent Claim
33 words
A bleaching composition according to claim 14 wherein the builder is a sodium or potassium salt selected from the group consisting of carbonate, bicarbonate, silicate, sesquicarbonate, borate, aluminosilicate, citrate, nitrilotriacetate and mixtures thereof.
Claim 17
Dependent Claim
120 words
An aqueous bleaching composition comprising: (i) a catalyst comprising a water-soluble manganese (II) salt absorbed onto a water-insoluble solid inorganic silicon support material in a ratio ranging from about 1000:1 to 1:1000, the concentration of manganese (II) ions ranging from about 0.5 to 5 ppm per liter of wash water; (ii) a peroxide compound in an amount to deliver at least 30 ppm active oxygen per liter of wash water; (iii) an alkali metal carbonate in an amount from about 10 to about 1000 ppm per liter of wash water; (iv) calcium ions derived from calcium hydroxide from about 100 to about 1000 ppm per liter of wash water; and the pH of the aqueous solution being 11.0 or higher.
Claim 18
Dependent Claim
120 words
An aqueous bleaching composition comprising: (i) a catalyst comprising a water-soluble manganese (II) salt absorbed onto a water-insoluble solid inorganic silicon support material in a ratio ranging from about 1000:1 to 1:1000, the concentration of manganese (II) ions ranging from about 0.5 to 5 ppm per liter of wash water; (ii) a peroxide compound in an amount to deliver at least 30 ppm active oxygen per liter of wash water; (iii) an alkali metal carbonate in an amount from about 10 to about 1000 ppm per liter of wash water; (iv) calcium ions derived from calcium hydroxide from about 100 to about 1000 ppm per liter of wash water; and the pH of the aqueous solution being 11.0 or higher.
Claim 19
Independent Claim
106 words
A method for bleaching fabric substrates comprising placing the substrate into water and treating with a composition to be added to said water comprising: (i) from about 1 to 40% of a catalyst comprising a water-soluble manganese (II) salt adsorbed onto a water-insoluble solid inorganic silicon support material, the ratio of manganese (II) salt to support material ranging from 1:1000 to 1:10; (ii) from about 0.1 to 40% of a peroxide compound; (iii) from about 0.1 to 50% of an alkali metal carbonate; and (iv) from about 0.1 to 40% of calcium hydroxide; the pH of an aqueous solution containing said composition being 11.0 or higher.
Claim 20
Independent Claim
106 words
A method for bleaching fabric substrates comprising placing the substrate into water and treating with a composition to be added to said water comprising: (i) from about 1 to 40% of a catalyst comprising a water-soluble manganese (II) salt adsorbed onto a water-insoluble solid inorganic silicon support material, the ratio of manganese (II) salt to support material ranging from 1:1000 to 1:10; (ii) from about 0.1 to 40% of a peroxide compound; (iii) from about 0.1 to 50% of an alkali metal carbonate; and (iv) from about 0.1 to 40% of calcium hydroxide; the pH of an aqueous solution containing said composition being 11.0 or higher.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |