The invention relates to a photopolymer formulation comprising a component reactive toward isocyanates, a polyisocyanate component, a writing monomer and a photoinitiator containing at least one dye and a coinitiator, characterized in that the coinitiator contains at least one substance of the formula (Ia)
The invention further provides a process for preparing the specific coinitiators and the coinitiators obtainable by this process, and additionally a process for producing a holographic medium using the specific coinitiators, and a holographic medium obtainable using the inventive photopolymer formulation. The invention further relates to a laminate structure comprising an inventive holographic medium and likewise specific borates suitable as coinitiators.
本发明涉及一种光聚合物配方,包括一种对异
氰酸反应的组分、一种聚
异氰酸酯组分、一种写入单体和一种光
引发剂,其中光
引发剂含有至少一种
染料和一个共
引发剂,其特征在于该共
引发剂含有至少一种式(Ia)的物质。本发明还提供了制备特定共
引发剂和可获得此过程的共
引发剂的方法,以及使用特定共
引发剂制备全息介质的方法,以及使用本发明的光聚合物配方获得的全息介质。本发明还涉及一种层压结构,包括一种创新的全息介质,以及同样适用作共
引发剂的特定
硼酸。