Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-01-18
1976-08-24
Rizzo, Nicholas S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
26032635, 26032636, 26032643, 2603265J, 26032662, 26032682, C07D29514, C07D40508, C07D40908
Patent
active
039766616
ABSTRACT:
Novel trimethine hemioxonol dyes are provided in which the polymethine chain of the dye includes the 1, 2 and 3 carbon atoms of a 1-cyclohexen-3-ylidene nucleus, the 1-carbon atom of said 1-cyclohexen-3-ylidene nucleus having the nitrogen atom of a tertiary amino group attached thereto. Photographic emulsions and elements are also provided featuring the trimethine hemioxonol dyes of the invention as spectral sensitizers or as filter material.
REFERENCES:
patent: 3449368 (1969-06-01), Shen et al.
patent: 3717629 (1973-02-01), Maier et al.
Brooker Leslie G. S.
Fumia, Jr. Arthur
Heseltine Donald W.
Eastman Kodak Company
Levitt J. G.
Rizzo Nicholas S.
Wheeler David E.
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