Process for producing three-dimensionally cured polymer materials having broad cholesteric reflection-bands, and so produced filters, reflectors and polarizers

摘要

Cholesteric polymer material with a density gradient in its polymer network and a cholesteric reflection band with a width of NOTLESS 100 nm is claimed. Also claimed are: (a) cholesteric films of this material and (b) a method of producing oriented, 3-dimensional cross-linked polymer materials (I) with extended cholesteric reflection bands.