Optical recording elements comprising novel metallized azo ether dyes
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United States of America Patent
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Aug 7, 2001
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N/A
app pub date -
Feb 20, 1998
filing date -
Feb 20, 1998
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Expired
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Abstract
Metallized azo ether dyes having an azo group linking a substituted 3-hydroxypyridine nucleus to a phenyl nucleus are disclosed. The phenyl nucleus has an ether substituent ortho to the azo group. The phenyl nucleus is free of strong electron withdrawing substituents. The dyes are useful in optical recording elements.
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