Round-polarization novel printing ink and method of producing the same

• Main Authors: JIAO YANG, YIN ZHAONAN, WANG XIAOFEI, DONG XIAOMING, JI XIAOMEI, WANG YONGMIN, YANG FEI, WEI JIE, QIAN YUANCHUN
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2011
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses a circular-polarization changing color anti-fake ink not containing interference pigment and having light-variation effect and a preparation method thereof. The ink comprises compositions such as a liquid crystal material, a resin, a filler and a solvent and so on, wherein the liquid crystal material is made from a cholesteric liquid crystal material which comprises a laevorotary and/or dextrorotatory cholesteric liquid crystal material or a mixture or a polymer of the cholesteric liquid crystal material. A pattern printed by the ink shows a color under circularly polarized light completely different from a color under natural light or lamplight, and has the light effects of laevorotary polarizing light, dextrorotatory polarizing light or laevorotary-dextrorotatorypolarizing light and can also generate the effect of color variation along with the change of eye visual angle; therefore, the circular-polarization changing color anti-fake ink has the uniqueness ofanti-fake characteristic,