US4810413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particles containing ammonium salts or other chlorine scavengers for detergent compositions
Assignee: Procter and Gamble Co
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Filing: 1987-05-29
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Granted: 1989-03-07
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Expires: 2007-05-29
Abstract
Abstract Granular detergent compositions contain a low level of ammonium salt or salt of specific anion chlorine scavenger which is preferably protected in a particle. Such salts protect enzymes in the wash process. The preferred particles can also comprise, e.g., a suds-controlling silicone material which is substantially removed from contact with the surfactant component or alkaline component of the composition. The particles preferably use, e.g., a polyethylene glycol carrier, with preferably a small amount of fatty acid, in an irregularly shaped particle having a minimum dimension of at least about 0.05 cm.
Inventors
- 👤 Eugene J. Pancheri
- 👤 Eugene S. Sadlowski
- 👤 Joseph M. Wong
- 👤 Vincent C. Hand
- 👤 Ann M. Sack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:02
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/02; C11D3/04; C11D3/046; C11D3/0005; C11D3/0042; C11D3/38; C11D3/386; C11D3/38609
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A granular detergent composition comprising: a. an enzyme component that is inactivated by free chlorine; b. a chlorine scavenger which is a salt containing ammonium cation; c. from about 5% to about 50% by weight of detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic, and cationic detergents, and mixtures thereof; and d. from about 5% to about 95% by weight of detergent builder; said composition being essentially free of bleaches; and said ammonium cation being incorporated within a substantially water-soluble, or water-dispersible, and non-hygroscopic carrier material which is impermeable to detergents and alkalinity.
Claim 2
Dependent Claim
97 words
A granular detergent composition comprising: a. an enzyme component that is inactivated by free chlorine; b. a chlorine scavenger which is a salt containing ammonium cation; c. from about 5% to about 50% by weight of detergent surfactant selected from the group consisting of anionic, nonionic, zwitterionic, ampholytic, and cationic detergents, and mixtures thereof; and d. from about 5% to about 95% by weight of detergent builder; said composition being essentially free of bleaches; and said ammonium cation being incorporated within a substantially water-soluble, or water-dispersible, and non-hygroscopic carrier material which is impermeable to detergents and alkalinity.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein said chlorine scavenger is an ammonium salt of sulfate, bisulfate, carbonate, bicarbonate, nitrate, chloride, borate, phosphate, condensed phosphate, acetate, benzoate, citrate, formate, lactate, salicylate, and mixtures thereof.
Claim 4
Dependent Claim
41 words
The composition of claim 1 wherein said water-soluble, or water-dispersible, and non-hygroscopic carrier material which is impermeable to detergents and alkalinity is selected from the group consisting of polyethylene glycol, highly ethoxylated fatty alcohols, gelatin, agar, gum arabic, and algae-derived gels.
Claim 5
Dependent Claim
54 words
The composition of claim 3 wherein the enzyme is selected from the group consisting of proteases at an activity unit level of from about 0.0001 to about 0.1 per gram of detergent composition, amylases at an amylase unit level of from about 5 to about 5,000 per gram of detergent composition, and mixtures thereof.
Claim 6
Dependent Claim
11 words
The composition of claim 4 wherein said enzyme is a protease.
Claim 7
Dependent Claim
28 words
The composition of claim 3 wherein said water-soluble, or water-dispersible, and non-hygroscopic carrier material is selected from the group consisting of polyethylene glycol and highly ethoxylated fatty alcohols.
Claim 8
Dependent Claim
46 words
The composition of claim 6 wherein said carrier material and said ammonium salt are added to the granular detergent composition as irregularly shaped particles consisting essentially of from about 1% to about 30% by weight of ammonium salt and the remainder being primarily said carrier material.
Claim 9
Dependent Claim
18 words
The composition of claim 1 wherein a silicone suds controlling agent is also incorporated in said carrier material.
References Cited (Backward Citations)
FR765063A
Cited
US3634266A
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US3741901A
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GB1417840A
Cited
GB2081295A
Cited
EP0206417A2
Cited
US4707287A
Cited
JPS6317996A
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JPS6341596A
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JPH06257492A
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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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |