EP0118933A1
Expired / Lapsed
EP
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Stabilized aqueous enzyme composition
Assignee: Procter and Gamble Co
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Filing: 1984-02-06
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Granted: —
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Expires: 2004-02-06
Abstract
Abstract a-Amylase derived from B. licheniformis is stabilized in aqueous liquid detergent compositions containing surfactants and sequestering agents by the inclusion of a calcium-containing component that provides at least about 1x10 -4.5 millimole of enzyme-accessible calcium per liter of composition.
Inventors
- 👤 Roland George Severson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 18:05
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38663
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
94 words
A stabilized aqueous enzyme composition comprising: (a) from about 1% to about 75% by weight of a non-soap detergent surfactant or mixtures - thereof; (b) from about 0.01% to about 5% by weight on a standard enzyme basis of an a-amylolytic enzyme derived from B.licheniformis; (c) from about 0.25% to about 40% by weight of a sequestering agent or mixtures thereof; (d) a calcium-containing component to provide at least about 1x10 -4.5 millimoles of enzyme available calcium ion per liter of said composition; and (e) from about 10% to about 80% water by weight.
Claim 2
Dependent Claim
94 words
A stabilized aqueous enzyme composition comprising: (a) from about 1% to about 75% by weight of a non-soap detergent surfactant or mixtures - thereof; (b) from about 0.01% to about 5% by weight on a standard enzyme basis of an a-amylolytic enzyme derived from B.licheniformis; (c) from about 0.25% to about 40% by weight of a sequestering agent or mixtures thereof; (d) a calcium-containing component to provide at least about 1x10 -4.5 millimoles of enzyme available calcium ion per liter of said composition; and (e) from about 10% to about 80% water by weight.
Claim 3
Dependent Claim
14 words
The composition of Claim 1 wherein said composition is an aqueous liquid detergent composition.
Claim 4
Dependent Claim
24 words
The composition of Claim 2 wherein said calcium-containing component provides at least about 1x10 millimoles of enzyme-available calcium ion per liter of said composition.
Claim 5
Dependent Claim
25 words
The composition of Claim 2 wherein said calcium-containing component provides at least about 1x10 -2 millimoles of enzyme-available calcium ion per liter of said composition.
Claim 6
Dependent Claim
20 words
The composition of Claim 2 wherein said non-soap detergent surfactant comprises from about 10% to about 65% of said composition.
Claim 7
Dependent Claim
21 words
The composition of Claim 5 wherein said sequestering agent comprises from about 3% to about 30% of said composition by weight.
Claim 8
Dependent Claim
22 words
The composition of Claim 6 wherein said sequestering agent comprises citric acid or water soluble salts of citric acid or mixtures thereof.
Claim 9
Dependent Claim
14 words
The composition of Claim 7 wherein said sequestering agent comprises a nitrogen-containing sequestering agent.
Claim 10
Dependent Claim
12 words
The composition of Claim 2 wherein said composition comprises a proteolytic enzyme.
Claim 11
Dependent Claim
21 words
The composition of Claim 9 wherein said composition comprises formic acid or water soluble salts of formic acid or mixtures thereof.
Claim 12
Dependent Claim
18 words
The composition of Claim 6 wherein said composition has a pH of from about 6.5 to about 9.0.
Claim 13
Dependent Claim
30 words
The composition of Claim 11 wherein said composition comprises from about 3% to about 25% by weight of a fatty acid having from about 10 to about 22 carbon atoms.
Claim 14
Dependent Claim
19 words
The composition of Claim 12 wherein water comprises from about 15% to about 60% of said composition by weight.
Claim 15
Dependent Claim
17 words
The composition of Claim 2 wherein said calcium-containing component comprises a salt of calcium or mixtures thereof.
Claim 16
Dependent Claim
17 words
The composition of Claim 2 wherein said calcium-containing component comprises a calcium-sequestering agent complex or mixtures thereof.
Claim 17
Dependent Claim
15 words
The composition of Claim 15 wherein said calcium-sequestering agent complex comprises a nitrogen-containing sequestering agent.
References Cited (Backward Citations)
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