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11.发明授权Component for liquid crystal composition and liquid crystal composition containing the same 失效用于液晶组合物的组分和含有它的液晶组合物
公开(公告)号：US5110497A
公开(公告)日：1992-05-05
申请号：US646115
申请日：1991-01-28
IPC分类号： C07C69/773 , C09K19/20 , C09K19/30 , C09K19/32 , C09K19/34 , C09K19/46 , C09K19/54 , C09K19/58
CPC分类号： C09K19/3441 , C09K19/2021 , C09K19/3001 , C09K19/586
摘要： An optically active compound represent by formula (I): ##STR1## wherein R.sub.1 represents a fluoroalkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 1 to 16 carbon atoms and an aralkyl group having from 6 to 16 carbon atoms; R.sub.3 represents C.sub.2 F.sub.5, CF.sub.3, CHF.sub.2, or CH.sub.2 F; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; Z represents --COO-- or --O--; (A) and (B) each represent a cyclic group; and * indicates an optically active center, and a liquid crystal composition containing at least one of said optically active compounds are disclosed. The compound is useful not only as a liquid crystal compound but as a chiral dopant to provide a liquid crystal composition exhibiting a chiral smectic phase.
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公开(公告)号：US5202054A
公开(公告)日：1993-04-13
申请号：US646898
申请日：1991-01-28
IPC分类号： G02F1/13 , C07D239/26 , C09K19/34
CPC分类号： C07D239/26 , C09K19/3463
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an optically active group represented by formula (II), (III) or (IV): ##STR2## wherein R.sub.3 represents a lower halo-alkyl group having from 1 to 2 carbon atoms; X represents --O--, --COO--, --OCO-- or a single bond; Y represents --CH.sub.2 O-- or --COO--; and Z represents --COO-- or --O--, l represents 0 or 1, provided that when l is 0, Y is a single bond; n represents an integer of from 1 to 18; and * indicates an optically active center. The compound exhibits three stable states of molecular orientation.
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公开(公告)号：US5110498A
公开(公告)日：1992-05-05
申请号：US634631
申请日：1990-12-27
CPC分类号： C09K19/0266 , C07C69/90 , C07C69/92 , C09K19/2021
摘要： A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 3 to 18 carbon atoms or an aralkyl group having from 7 to 18 carbon atoms; R.sub.2 represents an alkenyl group having from 1 to 18 (preferably from 3 to 14) carbon atoms; R.sub.3 represents CF.sub.3 or C.sub.2 F.sub.5 ; X represents a single bond, --O--, --COO--, or --OCO--; Y represents --COO--, --OCO--, --CH.sub.2 O--, or --OCH.sub.2 --; A and B each represents a cyclic group; and * indicates an optically active center.The compound of formula (I) exhibits three stable states of molecular orientation.
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公开(公告)号：US5110496A
公开(公告)日：1992-05-05
申请号：US663313
申请日：1991-03-01
IPC分类号： C09K19/34
CPC分类号： C09K19/3463
摘要： An optically active liquid crystal compound which is represented by the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl or aralkyl group of 4-18 carbon atoms, R.sub.3 represents a haloalkyl group, X represents O, COO, OCO, CO or a single bond, Y represents COO, OCO, CH.sub.2 O or OCH.sub.2, Z represents COO or O, (A) represents a cyclic group shown by ##STR2## (B) represents a cyclic group shown by ##STR3## and l shows that the cyclic groups are substituted by at least one halogen atom.
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15.发明授权
公开(公告)号：US5096613A
公开(公告)日：1992-03-17
申请号：US572215
申请日：1990-08-24
IPC分类号： C07C43/13 , C07C43/225 , C07C69/773 , C09K19/20 , C09K19/30 , C09K19/32 , C09K19/34
CPC分类号： C09K19/2021 , C07C43/137 , C09K19/3001 , C09K19/322 , C09K19/3441
摘要： An optically active fluorine-containing alcohol of ##STR1## where R.sub.2 is a C.sub.1-18 alkyl and n is 2-10, and liquid crystal compound of ##STR2## wherein R.sub.1 and R.sub.2 each is a C.sub.1-18 alkyl, X is O, COO or OCO, Y is COO, OCO, CH.sub.2 O or OCH.sub.2, Z is COO or O, (A) and (B) each is for example ##STR3## and p is zero or one, which is prepared from (I) above.
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