2-(2'-hydroxyphenyl) benzotriazoles containing a 2,4-imidazolidinedione group and process for their preparation
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United States of America Patent
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Sep 17, 2002
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N/A
app pub date -
Jul 27, 2000
filing date -
Jan 27, 1998
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Expired
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Abstract
2-(2'-hydroxyphenyl)benzotriazoles having general formula (I). The above 2-(2'-hydroyzphenyl)benzotriazoles having general formula (I) are useful as heat, oxygen and light stabilizers for organic polymers. In particular they are useful as UV stabilizers for organic polymers. ##STR1##
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