Novel 2-(2-hydroxyphenyl)-benzotriazole derivatives, substituted by branched long chain alkyl groups containing ester moieties
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United States of America Patent
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Feb 26, 1991
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app pub date -
Jan 12, 1990
filing date -
Dec 28, 1987
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Abstract
Benzotriazoles of the formula I ##STR1## in which R.sup.1 and R.sup.2 are located in the ortho-position or para-position relative to the OH group and at least one of these substituents in an .alpha.-branched alkyl group containing a polar group M in the .omega.-position are liquid or low-melting compounds which absorb UV light and can be used as stabilizers for organic materials. M can be, for example, an ester or amide group. R.sup.3 can be H, Cl, alkyl, alkoxy or a carboxyl group.
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