Photopolymer formulations with low interlacing density

摘要

A photopolymer formulation comprises a three-dimensionally crosslinked organic polymer or its precursors as a matrix; a compound comprising groups that react with ethylenically unsaturated compounds via polymerization under the action of actinic radiation and is present in solution or dispersion in the matrix; and photoinitiator(s). The network density of the three-dimensionally crosslinked organic polymer which is expressed as average molecular weight of the segments bridging two polymer strands is >= 2685 g/mol. An independent claim is included for exposing a medium comprising selectively polymerizing writing monomers with actinic radiation.