LIQUID CRYSTAL COMPOUND AND LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME

• Main Authors: ISOZAKI TADAAKI, MOGAMIYA HIROYUKI, AIHARA YOSHIHIKO, HAGIWARA TAKASHI
• Format: Patent
• Language: English
• Published: 27.07.1993
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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 the subject new liquid crystal compound, useful as a diluent for liquid crystal compounds assuming three stable states and capable of assuming smectic phase itself. CONSTITUTION:The objective compound expressed by the formula (R1 and R2 are 3-20C alkyl; X is (C=O) O, CO, O or single bond), e.g. 4-n- nonyloxycarbonylphenyl 4'-n-decyloxynbiphenyl-4-carboxylate. The compound expressed by the formula in which X is O is obtained by subjecting 4- hydroxybenzoic acid and an alkyl alcohol to esterifying reaction in the presence of sulfuric acid catalyst and reacting the resultant alkyl-4-hydroxybenzoic acid with a 4'-alkyloxybiphenyl-4-carboxylic acid chloride.