POLYMER MATERIAL FOR OPTICAL RECORDING OF INFORMATION BASED ON PRECURSORS OF FLUORESCENT COMPOUNDS AND A METHOD OF OBTAINING THESE COMPOUNDS Russian patent published in 2018 - IPC C09K11/06 C07D311/22 C08K5/1545 G03F7/04 

FIELD: chemistry.

SUBSTANCE: invention relates to photosensitive materials used to record information on multilayered optical discs with fluorescent reading. Polymer material for optical recording of information based on the new precursors of the fluorescent compounds of the series 7-diethylamino-3-(2,3-dihydro-1,3-benzthiazol-2-yl)coumarin of the formula (I) in an optically transparent polymer is described. Precursors (I) containing the radical R in nitrogen in benzothiazole, where R= -C(O)H or -C(O)CH₃, are obtained by acylation of 7-diethylamino-3-(2,3-dihydro-1,3-benzthiazol-2-yl)coumarin with acetic anhydride or mixed anhydride of acetic and formic acids. 7-diethylamino-3-(2,3-dihydro-1,3-benzthiazol-2-yl)coumarin was prepared by condensation of 3-formyl-7-diethylaminocoumarin with excess 2-aminothiophenol in absolute ethanol under argon at 15–35 °C.

EFFECT: invention provides new irreversible photosensitive materials that do not require the use of acidity photogenerators, with high fluorescence intensity upon irradiation.

5 cl, 4 dwg, 2 tbl, 9 ex