abstract |
The present invention relates to a photopolymer formulation comprising at least a polyol component, a polyisocyanate component, a writing monomer, a photoinitiator and a catalyst and having an activation temperature> 8300K. Furthermore, the invention relates to a method for producing a holographic medium, a holographic medium obtained by the method of the invention and the use of the holographic medium of the invention for producing a hologram. |