JP2899064B

A mesomorphic compound represented by the following formula (I): wherein R1 denotes a linear or branched alkyl group having 2 - 16 carbon atoms capable of including one or two non-neighboring methylene groups which can be replaced with -O-, -S-, and capable of including fluorine substituted for hydr...

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Bibliographische Detailangaben
Hauptverfasser:	YAMADA YOKO, TOKANO GOJI, NAKAMURA SHINICHI, TAKIGUCHI TAKAO, IWAKI TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A mesomorphic compound represented by the following formula (I): wherein R1 denotes a linear or branched alkyl group having 2 - 16 carbon atoms capable of including one or two non-neighboring methylene groups which can be replaced with -O-, -S-, and capable of including fluorine substituted for hydrogen; A denotes -A1- or -A1-A2- and B denotes -B1- or -B1-B2-wherein A1, A2, B1 and B2 respectively denote wherein Y1 and Y2 respectively denote H, F, Cl, Br, -CH3, -CN or -CF3; Z1 and Z2 respectively denote Z3 denotes -O-, R2, R3 and R4 respectively denote a linear or branched alkyl group having 1 - 16 carbon atoms including a methylene group which can be replaced with -O-, with proviso that it is not adjacent to the silicon atom; p and q are respectively 0 or 1 with proviso that p+q is 0 or 1; and n is an integer of 1 - 12. The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing an improved low-temperature operation characteristic and a decreased temperature-dependence of response speed.