Multiblock copolymers for flexographic printing plates
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United States of America Patent
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Apr 19, 1994
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N/A
app pub date -
Sep 8, 1992
filing date -
Sep 8, 1992
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Expired
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Abstract
Flexographic photosensitive printing plates are made with formulations comprising block polymers having an architecture of BA, CBA or CBCA, where A is poly(vinylpyridine), B is poly(butadiene) or poly(isoprene) and C is styrene. The polymers may be quaternized or neutralized with an organic acid. When made with quaternized polymers, the plates after imaging with UV may be developed in aqueous solutions. The block polymers offer further advantages as to ease of synthesis, safety and improved resolution.
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