Heterocyclic formamidines useful as ultraviolet light absorbers
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United States of America Patent
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Sep 7, 1993
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N/A
app pub date -
Dec 19, 1990
filing date -
Dec 19, 1990
priority date (Note) -
Expired
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Abstract
Novel substituted heterocyclic formamidines are useful as ultraviolet light absorbers, the formamidines having the formula ##STR1## wherein: Ar represents a 2-thiazolyl, 2-pyridyl, 2-(4,6-dimethyl) pyrimidyl or a 4-(2-methyl)quinolyl group, and, R represents a phenyl group or an alkyl group of from one to eight carbon atoms.
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