Patent EP0112120A2 successfully refreshed from Google Patents.
EP0112120A2
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EP
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Use of substituted 2-(2'-Hydroxyaryl)-2H-benzotriazolesulfonates as photostabilising agents for natural and synthetic fibres
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1983-12-07
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Granted: —
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Expires: 2003-12-07
Abstract
Abstract A method for protecting synthetic and natural fibres against phototendering. The method comprises treating the fibres with a substituted benzotriazolesulfonate of the follow formula: <CHEM> wherein (I) R1 is hydrogen or halogen, R2 is hydrogen or alkyl, R3 is hydrogen or hydroxy, R4 is -SO3X where X is hydrogen or an alkali metal, and R5 is hydrogen, with the proviso that R2 is not methyl when R1 and R3 are hydrogen: or (II) R1, R3 and R4 are hydrogen, R2 is -SO3X where X is hydrogen or an alkali metal, and R5 is -OR6 where R6 is hydrogen or alkyl; or (III) R1 is hydrogen or halogen, R2 is -SO3X where X is hydrogen or an alkali metal, R3 and R5 are hydrogen, and R4 is hydrogen, alkyl or benzyl; or (IV) R1 is -SO3X where X is hydrogen or an alkali metal, R2 is alkyl, R3 and R5 are hydrogen, and R4 is hydrogen or alkyl; under acidic conditions. The method is particularly suitable for treating wool, silk and nylon fibres, including blends thereof.
Inventors
- 👤 Neil Albert Evans
- 👤 Ian Hamilton Leaver
- 👤 Judi Rosevear
- 👤 Peter John Waters
- 👤 John Francis Kelly Wilshire
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:57
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20; D06M; D06M13/00; D06M13/322; D06M13/35; D06M13/352; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
194 words
A method for protecting synthetic and natural fibres against photodegradation which comprises treating the fibres with a substituted benzotriazolesulfonate of the following formula: wherein ( I ) R 1 is hydrogen or halogen, R 2 is hydrogen or alkyl, R 3 is hydrogen or hydroxy, R 4 is -SO 3 X where X is hydrogen or an alkali metal, and R 5 is hydrogen, with the proviso that R 2 is not methyl when R 1 and R 3 are hydrogen; or (II) R 1 , R 3 and R 4 are hydrogen, R 2 is -8O 3 X where X is hydrogen or an alkali metal, and R 5 is -OR 6 where R 6 is hydrogen or alkyl; or ( II I) R1 is hydrogen or halogen, R 2 is -SO 3 X where X is hydrogen or.an alkali metal, R 3 and R 5 are hydrogen, and R 4 is hydrogen, alkyl or benzyl; or (IV) R 1 is -SO 3 X where X is hydrogen or an alkali metal, R 2 is alkyl, R 3 and R 5 are hydrogen, and R 4 is hydrogen or alkyl; under acidic conditions.
Claim 2
Independent Claim
194 words
A method for protecting synthetic and natural fibres against photodegradation which comprises treating the fibres with a substituted benzotriazolesulfonate of the following formula: wherein ( I ) R 1 is hydrogen or halogen, R 2 is hydrogen or alkyl, R 3 is hydrogen or hydroxy, R 4 is -SO 3 X where X is hydrogen or an alkali metal, and R 5 is hydrogen, with the proviso that R 2 is not methyl when R 1 and R 3 are hydrogen; or (II) R 1 , R 3 and R 4 are hydrogen, R 2 is -8O 3 X where X is hydrogen or an alkali metal, and R 5 is -OR 6 where R 6 is hydrogen or alkyl; or ( II I) R1 is hydrogen or halogen, R 2 is -SO 3 X where X is hydrogen or.an alkali metal, R 3 and R 5 are hydrogen, and R 4 is hydrogen, alkyl or benzyl; or (IV) R 1 is -SO 3 X where X is hydrogen or an alkali metal, R 2 is alkyl, R 3 and R 5 are hydrogen, and R 4 is hydrogen or alkyl; under acidic conditions.
Claim 3
Dependent Claim
22 words
A method as defined in claim 1, which is carried out at a pH within the range of 2-5.5 with sulphuric acid.
Claim 4
Dependent Claim
27 words
A method as defined in claim 1 or claim 2, in which the fibres are treated with the substituted benzotriazolesulfonate for about 90 minutes at about 80°C.
Claim 5
Independent Claim
18 words
A method as defined in any one of claims 1-3, in which the liquor:fibre ratio is about 60:1.
Claim 6
Independent Claim
23 words
A method as defined in any one of claims 1-3, in which the fibre is wool, dyed wool, silk, nylon or blends thereof.
Claim 7
Independent Claim
45 words
A method as defined in any one of claims 1-3, in which, in the formula of the substituted benzotriazolesulfonate, the halogen is chlorine, the alkali metal is sodium, and the alkyl is methyl, ethyl, propyl (n and i), butyl (s and t), t-amyl or t-octyl.
Claim 8
Independent Claim
29 words
A method as defined in any one of claims 1-3, in which the substituted benzotriazolesulfonate is selected from the group consisting of: sodium 2-(3'-t-amyl-2'-hydroxy-5'-methyl)phenyl-5-(2H)-benzotriazolesulfonate; sodium 2-(3'-t-butyl-2'-hydroxy-5'-methyl)phenyl-5-(2H)-benzotriazolesulfonate; and sodium 2-(3'-i-propyl-2'-hydroxy-5'-methyl)phenyl-5-(2H)-benzotriazolesulfonate.
Claim 9
Dependent Claim
20 words
A method for protecting synthetic and natural fibres against photodegradation as defined in claim 1 and substantially as herein described.
Claim 10
Dependent Claim
12 words
Fibres whenever treated with a photostabilising agent as defined in claim 1.
Claim 11
Dependent Claim
7 words
Each and every novel feature herein disclosed.
Claim 12
Dependent Claim
7 words
Each and every novel feature herein disclosed.
References Cited (Backward Citations)
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