PRINTING INK FOR PROTECTION OF PRODUCTS AGAINST FALSIFICATION

文件类型：PDF文档
文件大小：619K
FIELD : printing arts; printing inks for securities; protection against falsification. SUBSTANCE : proposed printing ink contains pigment possessing protective properties, binder and thinner; pigment contains ultra-dispersed powder of rare-earth ferrite-garnet selected from group including Y3Fe5O12, Ln3Fe5O12, YxLn3-xFe5O12, where Ln is rare-earth element, 0≤x≤3, Y3-xBixFe5O12, where 0≤x≤2 with sizes of crystallites not exceeding 100 nm in the amount not exceeding 85% of weight of ink. Optical characteristics are extended within 380-750 nm and infrared transparence is increased within 0.74-3.0 mcm. EFFECT : enhanced identification due to magnetic properties. 8 dwg, 1 tbl, 3 ex