EP0220016A2
Expired / Lapsed
EP
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Clarification agent for coloured fabrics and method for treatment of fabrics
Assignee: Novo Nordisk AS
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Filing: 1986-10-07
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Granted: —
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Expires: 2006-10-07
Abstract
Abstract The clarification agent contains as the active component a cellulase. Fabrics which due to use for extended periods of time and repeated washings have acquired a dull, greyish appearance can regain their original clean colours by treatment with the clarification agent in aqueous medium. The clarification agent is considered as being the first and only agent of this kind. During the method for treatment of textiles a pH-value not too far from the pH optimum of the cellulose in question is usually used.
Inventors
- 👤 Kirsten Boegh
- 👤 Soren Jubie Jepsen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 05:43
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/38; C11D3/386; C11D3/38645; D; D06; D06M; D06M16/00; D06M16/003
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
27 words
Clarification agent for coloured fabrics, containing or consisting of cellulose based fibres, characterized by the fact that the clarification agent as an active constituent contains a cellulase.
Claim 2
Dependent Claim
27 words
Clarification agent for coloured fabrics, containing or consisting of cellulose based fibres, characterized by the fact that the clarification agent as an active constituent contains a cellulase.
Claim 3
Dependent Claim
13 words
Clarification agent according to claim 1, wherein the cellulase is Humicola insolens cellulase.
Claim 4
Dependent Claim
13 words
Clarification agent according to claim 1, wherein the cellulase is Sporotrichum pulverulentum cellulase.
Claim 5
Dependent Claim
13 words
Clarification agent according to claim 1, wherein the cellulase is Fusarium oxysporum cellulase.
Claim 6
Dependent Claim
13 words
Clarification agent according to claim 1, wherein the cellulase is Trichoderma reesei cellulase.
Claim 7
Dependent Claim
26 words
Clarification agent according to claims 1-5, wherein the agent contains a cellulase activity corresponding to at least 5 CMC cellulase activity units per gram of agent.
Claim 8
Dependent Claim
14 words
Clarification agent according to claims 1-6, wherein the agent is a non dusting granulate.
Claim 9
Dependent Claim
14 words
Clarification agent according to claim 1-6, wherein the agent is contained in a tablet.
Claim 10
Dependent Claim
19 words
Clarification agent according to claims 1-6, wherein the agent is an aqueous liquid, preferably with a cellulase stabilizing agent.
Claim 11
Dependent Claim
14 words
Clarification agent according to claims 1-9, wherein the agent is part of a detergent.
Claim 12
Dependent Claim
33 words
Clarification agent according to claims 1-9, wherein the agent is contained in a bag of a material which disintegrates at a temperature of at least 40°C or is soluble in the treating liquid.
Claim 13
Dependent Claim
35 words
Method for treatment of a fabric in order to provide colour clarification or to inhibit colour deterioration, wherein the fabric is treated in an aqueous liquid together with the clarification agent according to claims 1-11.
Claim 14
Dependent Claim
42 words
Method according to claim 12, wherein the pH value and the temperature of the aqueous medium is favourable for the activity and stability of the cellulase, and wherein the treatment time is sufficient for at least a reasonable degree of cellulolytic action.
Claim 15
Dependent Claim
33 words
Method according to claim 12-13, wherein the pH value and temperature of the aqueous medium and the treatment time are selected with a view of obtaining a maximum or substantially maximum cellulolytic action.
Claim 16
Dependent Claim
23 words
Method according to claims 12-14, wherein the cellulolytic activity of the aqueous medium is above 250 CMC cellulase activity units/1 of aqueous medium.
Claim 17
Dependent Claim
28 words
The use of a clarification agent in accordance with any one of claims 1 to 11 to provide colour clarification or to inhibit colour deterioration of a fabric.
References Cited (Backward Citations)
No citation records indexed.
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