Basf Aktiengesellschaft

Rudolf Zentel

Harald Keller

Georg Maxein

Karl Siemensmeyer

Peter Schuhmacher

Bruce M Novak

Stefan Beckmann

Manfred Muller

Manfred Eich

Michael Doerr

Polymerized liquid-crystalline compositions are obtainable by radiation curing of mixtures comprising P0 a) one or more cellulose derivatives in which some or all of the hydroxyl groups of the cellulose are replaced by --OR, 13 O--CO--NH--R, --O--CO--R or --O--CO--OR, where each R can be identical or different and is an aliphatic or aromatic radical of up to 20 carbons,

Polymerized liquid-crystalline compositions

Cholesteric copolyisocyanates with repeating units of the formulae: ##STR1## and, where appropriate, of the formula ##STR2## where R.sup.1 is a chiral aliphatic or aromatic radical,

Cholesteric copolyisocyanates

A copolymer based on monomers selected from the group consisting of dicarboximides, alkenyl isocyanates and alkenylurethanes of formula I: ##STR1## where R.sup.1 to R.sup.5, R.sup.6, X, Y, Z, M, and a-d are as defined in the specification.

Copolymers based on dicarboximides, alkenyl isocyanates and/or

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Nierstein, Germany

Rudolf Zentel