HEAVY METAL-FREE COATING COMPOSITION Russian patent published in 2003 - IPC

FIELD: polymer materials. SUBSTANCE: UV-solidificated cation-polymerizing contains: 40-70% of mono-, bis-, or higher aliphatic or aromatic glycidyl ethers; 20-55% of titanium dioxide; as photoinitiator, 0.5-10% of at least one hexafluorophosphate salt of iodonium of formula: , where R₁, R₂, R₃ and R₄, independently, represent hydrogen, C1-C20-alkyl, or unsubstituted or hydroxyl-substituted C1-C20- alcoxy, provided that at least one of R₁, R₂, R₃ or R₄ is not hydrogen atom; and 0.1-3% of sensitizer. Invention also provides coated substrate and photopolymerization method. EFFECT: enabled preparation of heavy metal-free composition with good resistance to yellowing. 10 cl, 1 tbl, 18 ex