SENSITIZER DYES FOR PHOTOACID GENERATING SYSTEMS USING SHORT VISIBLE WAVELENGTHS
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United States of America Patent
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Issued Date -
Feb 18, 2010
app pub date -
Aug 10, 2007
filing date -
Aug 12, 2006
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Abstract
Photosensitizing dyes are often used in conjunction with a photoacid generator in photopolymerizable materials and in holographic recording media. Typical dyes for these materials are used in the region of the visible spectrum for wavelengths greater than about 450 run. The present invention discloses a number of new 1,4-alkynyl substituted napthalene photosensitizing dyes that have suitably low extinction coefficients coupled with good sensitizing properties for use in such materials at wavelengths in the visible spectrum region of about 400 nm.
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