MULTILAYERED CHOLESTERIC LIQUID CRYSTAL, PROCESS FOR PRODUCING SAME, AND LAMINATE OF MULTILAYERED CHOLESTERIC LIQUID CRYSTAL

摘要

A multilayered cholesteric liquid crystal which comprises at least one light reflection layer (Xa) that is a light reflection layer obtained by fixing a cholesteric liquid-crystal phase and that contains a dextrorotatory chiral agent having an HTP of 30 μm^-1 or more and at least one light reflection layer (Xb) that is a light reflection layer obtained by fixing a cholesteric liquid-crystal phase and that contains a levorotatory chiral agent having an HTP of 30 μm^-1 or more, all of the light reflection layers (Xa) and all of the light reflection layers (Xb) having a selective-reflection wavelength in the range of 400-750 nm and the selective-reflection wavelength of at least one of the light reflection layers (Xa) being equal to the selective-reflection wavelength of at least one of the light reflection layers (Xb), and in which all the adjoining light reflection layers obtained by fixing a cholesteric liquid-crystal phase have been superposed so as to be in contact with each other. In the multilayered cholesteric liquid crystal, dextrorotatory and levorotatory, inversely twisted, cholesteric liquid-crystal layers have been superposed so as to be in contact with each other without using a pressure-sensitive adhesive therebetween. This multilayered cholesteric liquid crystal has good surface properties and high transparency, selectively reflects light in the visible-light region, and has high reflection performance.