Use of sulfonated 2-(2'-hydroxyaryl)-s-triazines as photostabilizing agents for wool and other protein fibres
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United States of America Patent
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Oct 6, 1987
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N/A
app pub date -
Aug 7, 1986
filing date -
Dec 7, 1984
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Expired
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Abstract
A method for protecting proteinaceous fibres, either dyed or in their natural form, against photodegradation and thermal degradation. The method comprises treating the fibres with a sulfonated s-triazine derivative of formula (I), wherein R.sup.1 is hydrogen, alkyl, hydroxyl, O-alky, OOC-alkyl or OOCNH-alkyl; R.sup.2 is hydrogen, alkyl or SO.sub.3 X; R.sup.3 is aryl, substituted aryl or O-alkyl; and X is hydrogen, NH.sub.4 or alkali metal, or formula (II), wherein R.sup.1 and R.sub.4 are hydrogen, alkyl, hydroxyl, O-alkyl, OCC-alkyl or OOCNH-alkyl; R.sup.2 and R.sup.5 are hydrogen, alkyl or --SO.sub.3 X; R.sup.3 is hydrogen or --SO.sub.3 X; R.sup.6 is aryl, substituted aryl, O-alkyl or O-aryl; and X is hydrogen, NH.sub.4 or alkali metal; under acidic conditions. The method is particularly suitable for treating dyed and undyed wool, silk, mohair and cashmere fibers, including blends thereof.
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