LIQUID COMPOSITION FOR PHOTOPOLYMERIZABLE FILM FOR OPTICAL RECORDING, COMPOSITION AND PRODUCTION METHOD Russian patent published in 2021 - IPC G03F7/28 

FIELD: photosensitive recording media.

SUBSTANCE: invention relates to the field of organic photosensitive recording media and relates to a liquid composition for a photopolymerizable film for optical recording, which forms an image by modulating the refractive index during exposure to activating radiation with a wavelength in the range of 500-550 nm. The liquid composition includes a mixture of liquid acrylic monomers, diacrylates, sulfide nanoparticles and a photoinitiator of polymerization. Sulfides are nanoparticles of arsenic sulfides in an amount of 1 to 10 wt%, preliminarily obtained by dissolving AS2S3 glass or its non-stoichiometric derivatives. The liquid acrylic monomer is contained in two types, the first of which is in the amount of 10 to 15 wt% and is 2-phenoxyethyl acrylate, the second liquid acrylic monomer is in the amount of 15 to 20 wt% and is 2- (dimethylamino) ethyl acrylate. Diacrylates are present in amounts from 55 to 60% by weight and are diurethane dimethacrylate in the form of a mixture of isomers. The photoinitiator of polymerization Irgacure784 is contained in an amount of from 3 to 6 wt%.

EFFECT: technical result consists in increasing the refractive index and decreasing the thickness of the resulting film.

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