| 摘要 |
<p>PROBLEM TO BE SOLVED: To significantly decrease the irradiation amount of active rays, to decrease the treating time or the number of processes and to decrease the cost by incorporating a specified compound into a liquid crystal polymer composition layer containing a cholesteric liquid crystal polymer having optically active groups. SOLUTION: The liquid crystal polymer composition layer containing a cholesteric liquid crystal polymer having optically active groups contains a compound expressed by the formula. In the formula, each of A and D is independently a 1,4-phenylene group or 1,4-cyclohexylene group, B is a 1,4-phenylene group, 1,4-cyclohexylene group, 4,4'-biphenylene group or 4,4'-bicyclohexylene group, each of X1, X2 is independently a -COO-, -OCO or -O- group, and each of (g) and (h) is independently an integer 2 to 6.</p> |
