The present invention relates to a photopolymerizable composition, which comprises:

    • (a) a block copolymer component comprising an unhydrogenated styrene diene block copolymer and a hydrogenated controlled distribution styrene diene block copolymer
    • (b) one or more photopolymerizable ethylenically unsaturated low molecular weight compounds,
    • (c) one or more polymerization initiators, and optionally
    • (d) from 0 to 40% by weight, based on the total photopolymerizable compositions, of one or more auxiliaries.
    • The invention also includes flexographic printing plates derived from said photopolymerizable compositions, and flexographic printing relief forms prepared from said plates.

     
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