PHOTOSENSITIVE COMPOSITIONS COMPRISING TRIBLOCK POLYMER HAVING OUTER BLOCKS OF VINYL PYRIDINE MONOMER AND A CENTRAL BLOCK OF DIENE MONOMER; PRINTING PLATES

摘要

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. When made with quaternized polymers, the plates after imaging with UV may be developed in aqueous solutions.