POLYURETHANE COMPOSITION FOR MANUFACTURE OF HOLOGRAPHIC MEDIA, ITS APPLICATION, METHOD FOR HOLOGRAM RECORDING AND UNSATURATED URETANES

摘要

1. A polyurethane composition for the manufacture of holographic media, comprising a component of the recording monomer a) containing as recording monomers, in terms of the entire composition, at least 10 wt.% Of one or more unsaturated urethanes a) of the formula (I) to (III) ), as well as polymer compounds or the corresponding matrix precursors as a matrix for recording monomers! ! ! ! where R independently in each case is a radiation-curable group, and also! X independently from each other in each case represents a single bond between the groups R and C = O or a linear, branched or cyclic, optionally containing a heteroatom, and / or optionally functionally substituted hydrocarbon residue. ! 2. The polyurethane composition according to claim 1, characterized in that R in the formulas (I) to (III) represents a vinyloxy, acrylate or methacrylate group. ! 3. The polyurethane composition according to claim 1, characterized in that in the formulas (I) to (III), group X in each case is a linear or branched hydroxyalkylene or polyoxyalkylene group. ! 4. The polyurethane composition according to claim 1, characterized in that it contains a recording monomer a) in terms of the total composition in an amount of from 20 to 50 wt.%. ! 5. The polyurethane composition according to claims 1 to 4, characterized in that as forming components for the matrix includes:! isocyanate component b),! isocyanate-reactive component c),! as well as one or more photoinitiators d). ! 6. A method of manufacturing media suitable for recording visual holograms, in which