EP0376705A1
Expired / Lapsed
EP
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Enzymatic liquid detergent compositions
Assignee: Unilever PLC
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Filing: 1989-12-27
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Granted: —
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Expires: 2009-12-27
Abstract
Abstract The invention pertains to enzymatic liquid detergent compositions in which the enzymes comprise a mixture of lipolytic enzymes and proteolytic enzymes. The storage stability of lipolytic enzymes in these proteolytic enzymes containing liquid detergent compositions is enhanced therein by the inclusion of a lower aliphatic alcohol such as ethanol and a salt of a lower carboxylic acid such as sodium formate and by providing for a detergent-surfactant system therein which predominantly consists of a nonionic detergent. The lipases are fungal lipases ex Humicola lanuginosa or Thermomyces lanuginosus. The proteolytic enzymes are preferably of the subtilisin type.
Inventors
- 👤 Martin Scott Cardinali
- 👤 Jack Thomas Mccown
- 👤 Thomas Weber
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38663
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
An enzymatic liquid detergent composition comprising a) from 10-90% of a detergent-active system which consists for at least 50% of one or more nonionic detergent-active compounds. b) one or more lipases selected from the group consisting of fungal lipases obtainable from Humicola lanuginosa or Thermomyces lanuginosus , in an amount, such that the final composition has a lipolytic activity of 0.005-100 LU/mg, c) from 1-10% by weight of a lower aliphatic alcohol having 1-4 carbon atoms, d) from 0.1-5% by weight of a water-soluble salt of a lower aliphatic carboxylic acid having 1-3 carbon atoms. and e) proteolytic enzymes in an amount such that the final composition has a proteolytic activity of 0.1-50 GU/mg.
Claim 2
Dependent Claim
114 words
An enzymatic liquid detergent composition comprising a) from 10-90% of a detergent-active system which consists for at least 50% of one or more nonionic detergent-active compounds. b) one or more lipases selected from the group consisting of fungal lipases obtainable from Humicola lanuginosa or Thermomyces lanuginosus , in an amount, such that the final composition has a lipolytic activity of 0.005-100 LU/mg, c) from 1-10% by weight of a lower aliphatic alcohol having 1-4 carbon atoms, d) from 0.1-5% by weight of a water-soluble salt of a lower aliphatic carboxylic acid having 1-3 carbon atoms. and e) proteolytic enzymes in an amount such that the final composition has a proteolytic activity of 0.1-50 GU/mg.
Claim 3
Dependent Claim
26 words
The composition of claim 1, comprising 15-70% by weight of a), 0.05-25 LU/mg of b), 2-8% by weight of c) and 0.5-3.5% by weight of d).
Claim 4
Dependent Claim
36 words
The composition of claim 1, wherein the lower aliphatic alcohol is ethanol, the water-soluble salt of the lower aliphatic carboxylic acid is sodium formate, and the nonionic detergent-active compound is an ethoxylated C8-C18 primary, linear alcohol.
Claim 5
Dependent Claim
27 words
The composition of claim 1, wherein the lipase is a lipase, obtained by cloning the gene from Humicola lanuginosa and expressing this gene in Aspergillus oryzae .
Claim 6
Dependent Claim
13 words
The composition of claim 1, wherein the proteolytic enzyme is a bacterial subtilisin.
Claim 7
Dependent Claim
31 words
The composition of claim 1, further comprising a calcium salt in such an amount that the composition contains from 0.1-2 millimoles of enzyme-accessible free calcium per kilogramme of the final product.
References Cited (Backward Citations)
EP0028866A1
Cited
EP0258068A2
Cited
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