Tethered sulfonium salt photoinitiators for free radical polymerization
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United States of America Patent
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Sep 4, 1990
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N/A
app pub date -
Dec 21, 1988
filing date -
Dec 21, 1988
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Expired
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Abstract
Free radical polymerizable compositions contain a sulfonium salt which is tethered to at least one of an electron donor and a sensitizer, and a polymerizable monomer, demonstrate substantially enhanced photosensitivity. This invention also provides layered structures comprising a substrate coated with a free radical polymerizable composition containing a sulfonium salt which is tethered to at least one of an electron donor and a sensitizer, and the polymerized layered structures. A method for the preparation of certain tethered sulfonium salts is described.
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