FERROELEKTRISCHE FLUESSIGKRISTALLINE SI-ENTHALTENDE POLYMERE, EIN VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG IN ELEKTROOPTISCHEN BAUTEILEN

摘要

Ferroelectric liquid-crystal polymers containing Si and corresponding to formula (I), where z = CH3? or a group according to formula (II): (CH2?)a?(-B)b?-M?1(-A?1)c?(-M?2)d?(-A?2)e?(-M?3)f?(-A?3)g?-R?1, provided that at least two z substitutes in the polymer are a group according to formula (II); n = 5 to 500; B = for example a group of formula (III); A?1, A?2, A?3 = for example pyrimidin-2,5-diyl; M?2, M?3 = for example CO-O or O-CO; M?1 = O, CH2?-CH2?, O-CO or COO; R?1 = for example alkyl with 1 to 16 atoms of C; a = 2 to 20; b, c, d, e, f, g = 0 or 1, and G = for example alkylene with 1 to 16 atoms of C. Said polymers are suitable for use in electro-optical elements because of their short switching times.