Benzotriazole UV absorbers having enhanced durability

Details Benzotriazole UV absorbers having enhanced durability Benzotriazole UV absorbers having enhanced durability

1999-01-21

2000-12-26

McKane, Joseph K.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548260, 548261, 548517, 548518, 548523, 548524, 546184, 546195, 546199, 544106, 544111, 544132, 544358, 544359, 544366, 524 91, 430931, C07D24920, C07D40310

Patent

active

061662186

ABSTRACT:
Benzotriazole UV absorbers which are substituted at the 5-position of the benzo ring by an electron withdrawing group exhibit enhanced durability and very low loss rates when incorporated into automotive coatings. This is particularly the case when the 3-position of the phenyl ring is also substituted by phenyl or phenylalkyl such as .alpha.-cumyl. Compounds where the 5-position of the benzo ring are substituted by perfluoroalkyl such as trifluoromethyl are particularly of interest for both their enhanced durability and for their excellent solubility and excellent color properties in some thermoplastic compositions when the phenyl ring is substituted at the 3-position by hydrogen or tert-alkyl.

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