Photopolymer formulation for producing holographic media having highly crosslinked matrix polymers

摘要

The invention relates to a photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer, and a photoinitiator, containing a coinitiator and a dye having the formula F An, where F stands for a cationic dye and An″ stands for an anion, wherein the dye having the formula F An comprises a water absorption of =5%. The invention further relates to a holographic medium, in particular in the form of a film, containing a photopolymer formulation according to the invention, to the use of such a medium for recording holograms, and to a special dye that can be used in the photopolymer formulation according to the invention.

主权项

1. A photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer and a photoinitiator containing a coinitiator and a dye of formula
F+An−, where F+ represents a cationic phenothiazine dye, and An− represents an anion, wherein the dye of formula F+An− has a water imbibition of ≦5%, and wherein the anion An− has an AClogP in the range of 1-6.5.