Abstract
Reentrant nematic phases have been found in binary systems consisting of homologous terminal-non-polar compounds (n-alkyloxyphenyl 4-[4-n-alkylcyclohexanoyloxy]-benzoates). X-ray investigations showed that the SA phases of both of the pure components and of binary mixtures are of the monolayer type. In some mixed systems the new phase sequence, N SA Nre SC SB was observed.