Methine dyes

Details Methine dyes Methine dyes

1989-08-07

1991-03-26

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548159, 548181, 548217, 548227, 546172, 546174, 546176, 546177, 546199, 546271, 544300, C07D23530, C07D47330, C07D21536, C07D40100

Patent

active

050030779

ABSTRACT:
Methine dye which contains a cycloheptimidazole nucleus having a substituent at its 1-position thereof and in which the 7-membered ring moiety is substituted by a methine bond having an auxochrome, at the terminal thereof, for forming a conjugated resonance chromophoric group with the 10 .pi. electron series of the nucleus, showing a long absorption with one or a few methine bonds and have high light-stability and solution-stability.

REFERENCES:
patent: 4565761 (1986-01-01), Katagiri et al.

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