Liquid crystal compound having lactone ring, liquid crystal...

Details Liquid crystal compound having lactone ring, liquid crystal... Liquid crystal compound having lactone ring, liquid crystal...

2011-01-25

2011-01-25

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299610, C252S299630, C549S273000, C549S291000, C549S293000

Reexamination Certificate

active

07875327

ABSTRACT:
A nematic liquid crystal compound represented by any one of formulas (a-1) to (a-6):in formulas (a-1) to (a-6), Ra and Rb are each independently hydrogen or alkyl having 1 to 10 carbons, provided that in the alkyl, —CH2- may be replaced by —O—, —(CH2)2- may be replaced by —CH═CH—, and hydrogen may be replaced by a halogen; ring A1 and ring A2 are each independently trans-1,4-cyclohexylene or 1,4-phenylene, provided that in these rings hydrogen may be replaced by a halogen, and in the case where the ring is trans-1,4-cyclohexylene, —CH2- may be replaced by —O—, and —CH2CH— may be replaced by —CH═C—; and Z1 and Z2 are each independently a single bond, —COO—, —OCO—, —OCH2-, —CH2O— or —CH2CH2-, provided that in formula (a-3), in the case where ring A2 is trans-1,4-cyclohexylene, Z2 is a single bond, —COO—, —OCO—, —OCH2- or —CH2O—, in the case where Ra is —C3H7, Rb is —OC2H5, and Z2 is a single bond, ring A2 is trans-1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 2-fluoro- 1,4-phenylene, 3-fluoro-1,4-phenylene, 2-fluoro-3-chloro-1,4-phenylene, 2-chloro- 3-fluoro-3,4-phenylene or 2,3-dichloro-1,4-phenylene, and in formula (a-4), in the case where ring A1 is trans-1,4-cyclohexylene, Z1 is a single bond, —COO—, —OCO—, —OCH2- or —CH2O—.

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English translation by computer for JP 2006-8632, http://www4.ipdl.inpit.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2006-008632.
CAPLUS 1967: 472634.

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