US5156761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing an enzymatic liquid detergent composition
Assignee: Novozymes AS
•
Filing: 1991-03-07
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Granted: 1992-10-20
•
Expires: 2011-03-07
Abstract
Abstract This invention relates to stabilized enzymatic liquid detergent compositions useful in cleaning a wide range of items including hard surfaces and soft goods such as textiles both for commercial and home use. The stabilization of the enzyme is obtained via the addition of a surfactant composition.
Inventors
- 👤 Dorrit Aaslyng
- 👤 Jadwiga Palicka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:16
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C11D1/94; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38663
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
135 words
A method of stabilizing an enzymatic liquid detergent composition comprising: providing an amphoteric surfactant of formula (I) ##STR4## wherein R is C 7 -C 22 alkyl group, optionally substituted by hydroxyl or carboxyl; R 1 is H or C 1 -C 6 alkyl; x is 2 or 3; y is 2 or 3; Q is (R 2 COOM); B is H or (R 2 COOM) where R 2 is C 1 -C 6 alkylene; and M is selected from the group consisting of H, an alkali metal metal, alkaline earth metal, ammonium or substituted ammonium; to a liquid detergent composition comprising a cleaning effective amount of an enzyme and a liquid carrier, wherein said amphoteric surfactant is present in an amount of from about 1 to about 50% by weight of said liquid determined composition.
Claim 2
Independent Claim
135 words
A method of stabilizing an enzymatic liquid detergent composition comprising: providing an amphoteric surfactant of formula (I) ##STR4## wherein R is C 7 -C 22 alkyl group, optionally substituted by hydroxyl or carboxyl; R 1 is H or C 1 -C 6 alkyl; x is 2 or 3; y is 2 or 3; Q is (R 2 COOM); B is H or (R 2 COOM) where R 2 is C 1 -C 6 alkylene; and M is selected from the group consisting of H, an alkali metal metal, alkaline earth metal, ammonium or substituted ammonium; to a liquid detergent composition comprising a cleaning effective amount of an enzyme and a liquid carrier, wherein said amphoteric surfactant is present in an amount of from about 1 to about 50% by weight of said liquid determined composition.
Claim 3
Dependent Claim
37 words
The method according to claim 1, wherein said amphoteric surfactant has the formula (II): ##STR5## wherein R is a C 7 -C 22 alkyl group, optionally substituted by hydroxyl or carboxyl and y is 2 or 3.
Claim 4
Dependent Claim
13 words
The method according to claim 1, wherein said enzyme is a microbial enzyme.
Claim 5
Dependent Claim
14 words
The method according to claim 3, wherein said microbial enzyme is a Bacillus enzyme.
Claim 6
Dependent Claim
16 words
The method according to claim 4, wherein said Bacillus enzyme is a protease or an amylase.
Claim 7
Dependent Claim
14 words
The method according to claim 1, wherein said enzyme is a fungal detergent enzyme.
Claim 8
Dependent Claim
17 words
The method according to claim 6, wherein said fungal detergent enzyme is a protease, lipase or cellulase.
Claim 9
Dependent Claim
26 words
The method according to claim 6, wherein said enzyme is selected from the group consisting of a Fusarium protease, a Humicola lipase and a Humicola cellulase.
Claim 10
Dependent Claim
23 words
The method according to claim 1, wherein said liquid detergent composition further comprises an cleaning cleaning effective amount of a second microbial enzyme.
Claim 11
Dependent Claim
28 words
The method according to claim 1, wherein said amphoteric surfactant is present in an amount of from about 3 to 40% by weight of said liquid detergent composition.
Claim 12
Dependent Claim
23 words
The method according to claim 1, wherein said liquid detergent composition further contains about 1 to 20% by weight of a nonionic surfactant.
Claim 13
Dependent Claim
23 words
The method according to claim 1, wherein said liquid detergent composition further contains about 1 to 20% by weight of an anionic surfactant.
Claim 14
Dependent Claim
24 words
The method according to claim 1, wherein said liquid detergent composition further contains about 1 to 20% by weight of a second amphoteric surfactant.
Claim 15
Dependent Claim
16 words
The method according to claim 1, wherein said liquid carrier is water and an organic solvent.
Claim 16
Dependent Claim
30 words
The method according to claim 1, wherein said liquid detergent composition is about 20 to 70% by weight of water and 0 to about 20% by weight of a solvent.
Claim 17
Dependent Claim
14 words
The method according to claim 1, wherein said liquid carrier is an organic solvent.
Claim 18
Dependent Claim
22 words
The method according to claim 16, wherein said liquid detergent composition is about 10 to 30% by weight of said organic solvent.
Claim 19
Dependent Claim
23 words
The method according to claim 1, wherein said liquid detergent composition further comprises about 1 to 40% by weight of a detergent builder.
Claim 20
Dependent Claim
25 words
The method according to claim 1, wherein said liquid detergent composition further comprises about 1 to 20 millimoles per liter of a soluble calcium salt.
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