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AssigneeCovestro Deutschland AG
InventorsMarc-Stephan Weiser, Horst Berneth, Friedrich-Karl Bruder, Thomas Rölle, Dennis Hönel, Thomas Fäcke
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The invention relates to an assembly comprising a substrate and a photopolymer film, which are joined to one another partably at least in sections, the substrate comprising polyethylene terephthalate, and the photopolymer film comprising three-dimensionally crosslinked polyurethane matrix polymers, a writing monomer and a photoinitiator, characterized in that the substrate, after seven-day incubation at 23° C. in a 0.5 volume percent butyl acetate solution of the dye of formula (I) has an L value L1 and before the incubation an L value of L0, the L values being determined by CieLAB measurements, and the difference between the L values L1 and L0 satisfying the formula (II) L1−L0>−0.25 (formula II).
An assembly comprising a substrate and a photopolymer film, which are joined to one another partably at least in sections, the substrate comprising polyethylene terephthalate, and the photopolymer film comprising three-dimensionally crosslinked polyurethane matrix polymers, a writing monomer and a photoinitiator, wherein the substrate, after seven-day incubation at 23° C. in a 0.5 volume percent butyl acetate solution of the dye of formula (I)
Dependencies are inferred from the claim text.