| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a polarizing film which is obtained from a coating liquid containing a lyotropic liquid crystalline dye and has a lower haze value than that of conventional polarizing films. <P>SOLUTION: The polarizing film having a lower haze value can be formed by allowing not less than a specific amount of cesium ions to act on an acidic group-containing lyotropic liquid crystalline dye. The reason why the haze value is lowered by the cesium ions is believed to reside in that the cesium ions, which have a large radius, are bonded to the acidic group contained in the lyotropic liquid crystalline dye in the coating liquid to increase the intermolecular distance of the lyotropic liquid crystalline dye and, consequently, the crystallization of the lyotropic liquid crystalline dye is suppressed during drying. <P>COPYRIGHT: (C)2010,JPO&INPIT |
