| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a fluorescent compound of formulain which Rand Rindependently are hydrogen or C-Calkoxy, Rand Rindependently of one another are hydrogen or C-Calkyl, Rand Rindependently of one another are hydrogen or C-Calkyl, Rand Rindependently are hydrogen or C-Calkoxy, or two Rand R, Rand R, Rand Rand/or Rand Rtogether form a group of. Invention also relates to use of compounds for printing with counterfeit protection, to use in printing ink composition, to a composition of printing ink, to A protected document and a method of producing said compound.EFFECT: technical result is obtaining a novel fluorescent compound possessing high resistance to chemicals and solvents, which can be used as fluorescent pigments in process of printing with counterfeit protection.12 cl, 2 tbl, 4 ex |
