In Japanese Patent Application Kokai Koho (Laid-open) No. 68-254529 are disclosed polyether-type ferroelectric polymeric liquid crystals obtainable by polymerizing epoxy monomers, for example polymeric liquid crystals which are represented by the following formula ##STR4## wherein s is an integer of 1 to 30, and are obtained by polymerizing epoxy compounds represented by the following formula ##ST