Trisubstituted pyridine dyes

Details Trisubstituted pyridine dyes Trisubstituted pyridine dyes

1997-11-26

2000-01-18

Davis, Zinna Northington

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21302

Patent

active

060159073

ABSTRACT:
2,4,6-Trisubstituted pyridines wherein at least one of the substituents is a para-(N,N-diarylamino)phenyl group, and the other two substituents are alkyl, cycloalkyl or aryl groups are useful as image dyes in acid-mediated imaging media, since the colored forms of these dyes display improved photostability as compared with similar trisubstituted pyridines which lack the para-(N,N-diarylamino)phenyl group. Salts of these trisubstituted pyridines are also useful in sensitizing 'onium salts to blue visible or similar radiation.

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