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US4501681A
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Detergent dish-washing composition
Assignee: Colgate Palmolive Co
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Filing: 1982-12-20
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Granted: 1985-02-26
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Expires: 2002-12-20
Abstract
Abstract Dish-washing composition containing alkali polyphosphates and silicates, surfactants, peroxized oxygerating agents, enzymes and sufficient alkali for providing a washing bath of pH 11.5.
Inventors
- 👤 Alain Groult
- 👤 Jean Samec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:09
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38609
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
Detergent dish-washing composition containing alkali metals polyphosphates and silicates, at least one non-ionic surfactant, at least one oxidizing agent, enzymes and optionally other conventional additives suitable for detergents, characterized in that said enzymes comprise at least one amylolytic enzyme whose activity is considered to be negligible at pH above 11.5, in that the oxidant is at least one mineral or organic peroxide and in that the alkali content is sufficient to provide a washing bath in a dish-washing machine with a pH above 12.2.
Claim 2
Dependent Claim
84 words
Detergent dish-washing composition containing alkali metals polyphosphates and silicates, at least one non-ionic surfactant, at least one oxidizing agent, enzymes and optionally other conventional additives suitable for detergents, characterized in that said enzymes comprise at least one amylolytic enzyme whose activity is considered to be negligible at pH above 11.5, in that the oxidant is at least one mineral or organic peroxide and in that the alkali content is sufficient to provide a washing bath in a dish-washing machine with a pH above 12.2.
Claim 3
Dependent Claim
43 words
The composition of claim 1 wherein the peroxide is sodium perborate and further comprising the following ingredients by weight: ______________________________________
alkali metals polyphosphates
10-70%
alkali metals silicates
25-70%
non-ionic surfactants
0.2-5%
amylolytic enzymes 0.1-5%
sodium perborate 0.1-20%
further additives balance to 100%
______________________________________
Claim 4
Dependent Claim
24 words
The composition of claim 1 wherein said alkali content is sufficient to provide said washing bath with a pH of about 12.2 to 12.4.
Claim 5
Dependent Claim
24 words
The composition of claim 2 wherein said alkali content is sufficient to provide said washing bath with a pH of about 12.2 to 12.4.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |