METHOD OF PREPARING OF PHOTOPOLYMERIZING COMPOSITION Russian patent published in 1995 - IPC

FIELD: photopolymerizing compositions. SUBSTANCE: method involves carrying out of radical polymerization of the following components, mas. p.: styrene 40-55; methacrylic acid 5-10 and acrylonitrile 5-10 in the presence of benzoyl peroxide 0.5-2 and benzophenone 3.0-8.5 in the medium of isopropanol 100-300 and by addition of tertiary amine of the formula where R - R = -CH₃ or C₂H₅ 0.5-1.5 after polymerization at 75-80 C for 1-2 h. EFFECT: increased photosensitivity and stability of composition. 2 tbl