Nitrone compounds as photopolymer polymerization inhibitors and contrast enhancing additives
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United States of America Patent
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Dec 19, 2000
Grant Date -
N/A
app pub date -
Apr 19, 1996
filing date -
Apr 19, 1996
priority date (Note) -
Expired
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Abstract
The invention provides improved high contrast, photopolymerizable compositions suitable for producing high contrast waveguides. The high contrast, photopolymerizable compositions of this invention include a nitrone compound component. The photosensitive composition is an admixture of a free radical polymerizable acrylate or methacrylate component having at least two ethylenically unsaturated groups, a photoinitiator, and a nitrone compound.
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