| abstract |
Dioxanyl-dioxanes (I) contg. a unit of the formula: -Diox-(A)m-Diox- (II) are new; Diox = 1,3-dioxan-2,5-diyl; A = -CH2CH2-, -CH=CH-, -Ctriple boundC- or 1,4-cyclohexylene; m = 0 or 1. Also claimed are: (a) dioxanyl diols contg. a unit of the formula: -Diox-(A)m-C(CH2OH)2 (III); (b) dioxane derivs. contg. a unit of the formula: -Diox-(A)m-CHXY (IV); X, Y = COR or CN; R = alkyl, aryl, alkoxy or aryloxy; and (c) a liq. crystalline (LC) medium contg. at least 2 LC components, including cpd(s). (I). |