Complex polymethine dyes and their use
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United States of America Patent
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Oct 5, 1999
Issued Date -
N/A
app pub date -
Jan 26, 1999
filing date -
Dec 20, 1996
priority date (Note) -
Expired
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Abstract
A cyanine dye complex of formula I ##STR1## consisting of a cyanine dye and a chromium or cobalt metal azo ligand complex is particularly useful in a process for optically recording, storing or reproducing information using a recording medium, especially when the process is carried out at the wavelength range from 600 to 800 nm.
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