PHOTOPOLYMER COMPOSITION AND USE THEREOF TO PRODUCE HOLOGRAPHIC MEDIA Russian patent published in 2014 - IPC C08G18/67 C08G18/77 C08G18/48 C08L75/04 G03F7/00 G03F7/28 G11B7/245 

FIELD: physics, optics.

SUBSTANCE: present invention relates to a photopolymer composition for producing holographic media, which contains three-dimensionally cross-linked organic polymers (A) or precursors thereof as a matrix, and compounds (B), which contain groups which, when exposed to actinic radiation, react with unsaturated compounds with ethylene fragments to form polymers (radiation-curable groups), and which are dissolved in said matrix or are located therein in a distributed state, as well as a component (C) which is at least one photoinitiator, wherein density of the polymeric cross-linking of the organic polymer, expressed through average molecular weight M_S of two segments connected by polymer bridges, is a value ranging from 2685 g/mol to 55000 g/mol. The invention also describes a medium which is suitable for recording visual holograms, use of said medium and a method for exposure thereof.

EFFECT: producing photopolymer compositions for use as holographic media, which can be produced without subsequent thermal or wet chemical treatment, and use of which enables to obtain holograms which are colourless after exposure, with high diffraction efficiency and high brightness.

13 cl, 3 dwg, 4 tbl