Photosensitive elastomer polymer compositions for flexographic printing plates
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United States of America Patent
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Mar 1, 1994
Issued Date -
N/A
app pub date -
Apr 13, 1992
filing date -
Jul 15, 1991
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Abstract
Flexographic photosensitive printing plates are made with formulations comprising triblock polymers of poly(vinylpyridine)-poly(butadiene) or poly(isoprene)-poly(vinylpyridine). 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 acid neutralized polymers offer further advantages as to ease of synthesis, safety and improved resolution.
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