| http://www.w3.org/ns/prov#value | - Preferred are those having thermotropic properties with the objective of workability and processability.For the purpose of enhancing the heat-resistance of the resulting film of the present invention, cross-linkers such as bisazide compounds and glycidyl methacrylate may be added to the liquid crystal film material, in such a range as not to bother the development of the cholesteric phase.
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