| 摘要 |
The present invention relates to a liquid-crystalline composition which comprises, as components A) a liquid-crystalline mixture comprising as least one compound selected from the group consisting of the compounds of the formula Ia Z<1>-Y<1>-A<1>-Y<3>-M<1>-Y<4>-A<2>-Y<2>-Z<2> Ia and of the formula Ib Z<3>-Y<5>-A<3>-Y<7>-M<2>-P Ib, where the variables, independently of one another, have the following meanings: P is hydrogen, C1-C15-alkyl or a -Y<8>-A<4>-Y<6>-Z<4 >group, Z<1 >to Z<4 >are polymerizable groups, Y<1 >to Y<8 >are linking groups, A<1 >to A<4 >are spacers and M<1 >and M<2 >are mesogenic groups, B) if desired, further additives selected from the group consisting of photoinitiators, reactive thinners and diluents, C) if desired, further additives taken from the group consisting of antifoams and deaerators, lubricants and flow auxiliaries, thermally curing or radiation-curing auxiliaries, substrate wetting auxiliaries, wetting and dispersion auxiliaries, hydrophobicizing agents, adhesion promoters and auxiliaries for improving the scratch resistance, D) if desired, further additives selected from the group consisting of dyes and pigments, and E) if desired, further additives selected from the group consisting of light, heat and/or oxidation stabilizers. A detailed definition of the variables Z<1 >to Z<4>, Y<1 >to Y<8>, A<1 >to A<4>, P, M<1 >and M<2 >is given in the description. The present invention furthermore relates to the use of a liquid-crystalline composition of this type as a printing ink, for printing or coating substrates, in electro-optical components, for counterfeiting-proof marking of articles and for the production of films or coatings which selectively reflect ligh
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