Five membered-ring compounds and utilization thereof in...

Details Five membered-ring compounds and utilization thereof in... Five membered-ring compounds and utilization thereof in...

2006-05-30

2006-05-30

Wu, Shean C. (Department: 1756)

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Liquid crystal optical display having layer of specified...

C252S299610, C252S299630, C252S299660, C252S299670, C548S146000, C548S182000, C548S240000, C548S243000, C548S247000, C549S029000, C549S475000

Reexamination Certificate

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07052742

ABSTRACT:
Fluorinated five-membered ring compounds of the formula (I)in-line-formulae description="In-line Formulae" end="lead"?R1—X—(A1—M1)a—(A2—M2)b—A3—Y—E   (I)in-line-formulae description="In-line Formulae" end="tail"?where E is a radical T—Z—R2containing a five-membered ring and, for example,T is undirected and is 4-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,4-diyl, 5-fluorothiophene-2,4-diyl, furan-2,5-diyl, furan-2,4-diyl, isoxazole-3,5-diyl, thiazole-2,5-diyl, thiazole-2,4-diyl, cyclopentane-1,3-diyl or cyclopentene-1,3-diyl,R1and R2are hydrogen,X is a single bond, —O—, OC(═O)—, —C(═O)O— or —OC(═O)O—,Y is —OC(═O)—, —OCH2—, —CH2CH2—,Z is a single bond or —O—,A1, A2, A3are each, independently of one another, phenylene-1,4-diyl,M1, M2are undirected and are each, independently of one another, —OC(═O)—, —OCH2—, —CH2CH2—, —OC(═O)CH2CH2—, —OCH2CH2CH2—, —C≡C—, —CH2CH2CH2CH2— or a single bond,a, b are each, independently of one another, 0 or 1,are used in FLC mixtures.

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English translation by computer for JP 2000-17264, http://www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2000-017264.
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