Consortium Fur Elektrochemische Industrie Gmbh

Ingo P Zahn

Franz-Heinrich Kreuzer

Hans-Peter Weitzel

Norman Haberle

Norman Haeberle

Peter Weitzel

Benno Krueger

4-Hydroxyphenyl benzoate derivatives of the general formula 1: ##STR1## are prepared by cleaving 1,4-bis(benzoyl)hydroquinone derivatives of the general formula 2: ##STR2## with alkali metal alkanolates, in which in the general formulae 1 and 2 R.sup.1 to R.sup.14 are as defined in claim 1.

Process for the preparation of 4-hydroxyphenyl benzoate derivatives

The liquid-crystalline organosiloxanes containing, per molecule, at least one Si--C-bonded chiral tartarimide radical of the formula ##STR1## in which M, A.sup.5 and k are as defined in claim 1, can be employed as chiral filter materials, for decorative purposes and in optical elements.

Liquid-crystalline organosiloxanes containing chiral tartarimides

Liquid crystals with (polysila) alkyl wing groups

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Mu/ nchen, Germany

Ingo P Zahn