| 摘要 |
The invention relates to a light-curable (photo-curable), negative-working mixture and to a recording material obtained therefrom which is suitable for the production of elastic relief printing plates. The mixture contains, as essential constituents, a) an elastomeric binder, b) a free-radical-polymerisable compound which is compatible with the binder and contains at least one terminal ethylenically unsaturated group and has a boiling point of above 100 DEG C at atmospheric pressure, and c) a compound or compound combination which is capable of initiating the polymerisation of compound (b) on exposure to actinic light. The binder is built up from segments A, B and C, where A is a hydrophobic soft block having a glass transition temperature Tg of below -30 DEG C, B is a hydrophobic, hard block having a glass transition temperature Tg of above + 30 DEG C, and C is a polar block built up from vinyl monomers and/or by anionic ring opening of polymerisable heterocyclic compounds.
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