SILACYCLOHEXANE COMPOUND AND LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME

• Main Authors: NAKAJIMA MUTSUO, ASAKURA KAZUYUKI, OGIWARA TSUTOMU, SHIMIZU TAKAAKI, KANEKO TATSUSHI, KANO TAKESHI
• Format: Patent
• Language: English
• Published: 26.11.1996
• Edition: 6
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC CHEMISTRY; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PURPOSE: To obtain a new silacyclohexane compound as a specific liquid crystal compound containing silicon in the molecule, useful as a component for a liquid crystal composition having a nematic liquid crystal phase in a wide temperature range, a low viscosity, a high speed of responsiveness, a low threshold voltage and a high contrast, useful as a liquid crystal indication element, etc. CONSTITUTION: This new silacyclohexane compound is shown by formula I [R is a 1-10C alkyl, a 2-7C alkoxyalkyl, a 2-8C alkenyl or a 1-10C mono- or difluoroalkyl; a group of formula II is a trans-1-sila-1,4-cyclohexylene, a trans-4- sila-1,4-cyclohexylene or a 1,4-cyclohexylene in which silicon at the 1- or 4-position contains H or a substituent group of F, Cl or CH3 ; (j), (k) and (l) are each 0 or 1; a group of formula III is a (F-substituted) 1,4-phenylene or the group of the formula II; L1 and L2 are each H or F; (m) and (n) are each 0, 1 or 2; m+n is 2, 3 or 4; X is H, F or Cl] and is useful as a liquid crystal composition having a nematic liquid crystal phase in a wide temperature range, a low viscosity, a low threshold voltage and a high contrast, useful as a liquid crystal indication element, etc.