Flexographic printing forms having resistance to UV-hardenable printing inks

摘要

A photopolymerizable mixture for photopolymerizable printing plates with an improved resistance to UV-hardenable printing inks, contains 10-45% by weight of at least one thermoplastic, elastomeric, block copolymer comprising of two or more polymer blocks comprising aromatic vinyl units and one or more polymer blocks comprising isoprene and/or isoprene/butadiene units. The block copolymer has a vinyl bond content not above 70%, a glass transition temperature not above 20 DEG C., and a peak temperature of a primary dispersion of tan delta not above 30 DEG C.