CARBOXYLIC ACID ESTER COMPOUND, LIQUID CRYSTAL MATERIAL, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL ELEMENT

The carboxylic acid ester compound of the invention is represented by the following formula ¢I!: (see formula above) wherein R is an alkyl group of 3-20 carbon atoms; n is 0 or 1; at least one of A1, A2 and A3 is a group having tetralin structure, and the residual groups of A1, A2 and A3 axe each in...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAOKA, HIDEO, KAWABATA, JUNICHI, TATSUKI, YUUICHIROU, NISHIYAMA, SHINICHI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES CHEMISTRY DYES HETEROCYCLIC COMPOUNDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC CHEMISTRY PAINTS POLISHES
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Beschreibung
Zusammenfassung:	The carboxylic acid ester compound of the invention is represented by the following formula ¢I!: (see formula above) wherein R is an alkyl group of 3-20 carbon atoms; n is 0 or 1; at least one of A1, A2 and A3 is a group having tetralin structure, and the residual groups of A1, A2 and A3 axe each independently a group having specific aromatic cyclic structure such as a phenylene group and a biphenyl group; Y1 and Y2 are each independently a group selected from the group consisting of -COO-, -CH2CH2- and -CH2O-; Q1 is a group selected from the group consisting of -CH3, -CF3, -C2H5 and -C2F5; and q is an integer of 9 to 12. This carboxylic acid ester compound may be used as an antiferroelectric liquid crystal material, and also be used as a liquid crystal composition by using other liquid crystal material in combination. A liquid crystal element which is formed by filling the carboxylic acid ester compound in a gap between two substrates opposite to each other shows excellent properties required for antiferroelectric liquid crystal elements, for example, high speed switching.