NEW LIQUID-CRYSTAL POLYMER WITH A 1,3-DITHIANE RING

New polymerizable liquid crystal materials, 10-{4-[5-(4'-ethoxyphenyl) -1, 3-dithian-2-yl] phenoxy} decyl methacrylate (5) End 10-{4-[5-octyl -1, 3-dithian-2-yl] phenoxy} decyl methacrylate (7) have been synthesi zed and converted into polymers. Since these polymers (5', 7') show th e schlieren texture of a nematic phase (e.g. 5': G 5 N 63 I), they are a new type of liquid crystal polymer having a 1,3-dithiane ring In th eir mesogen units.