PROCESS FOR THE PRODUCTION OF THREE-DIMENSIONALLY CROSSLINKED POLYMERIC MATERIALS HAVING BROAD CHOLESTERIC REFLECTION BAND, AND FILTERS, REFLECTORS AND POLARIZERS PRODUCED BY THISPROCESS

摘要

The invention relates to a process for the preparation of three-dimensionally crosslinked polymeric materials having a broad cholesteric reflection band, which comprises bringing polymeric materials having cholesteric properties and an extractable material content into contact with a solvent or solvent mixture.