Title:
LIQUID CRYSTAL PHASE
Document Type and Number:
Japanese Patent JPS6099191
Kind Code:
A
Abstract:
Liquid crystal phases containing at least one chiral, compound with at least two chiral centers in the molecule which are adjacent or separated from one another by an acyclic chain, preferably at least one optically active compound of the formula I R1-CHCH3-CHCH3-R2 I wherein R1 and R2 independently of one another are each a group -Z1-(A1)m-Z2-(A2)n-Y, wherein A1 and A2 in each case independently of one another are a 1,4-phenylene, pyrimidine-2,5-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl or 1,4-bicyclo(2,2,2)-octylene group, it also being possible for these to be mono-substituted or poly-substituted by F, Cl, Br, CN and/or alkyl groups with up to 12 C atoms, it being possible for 1 or 2 CH2 groups in the alkyl groups to be replaced by O atoms, Z1 is -O-CO-, -CO-O-, -O- or a single bond, Z2 is -CO-O-, -O-CO-, -CH2CH2-, -OCH2-, -CH2O-, -CH=N-, -N=CH-, -N=N-, -N(O)=N- or a single bond, m and n in each case independently of one another are 0, 1 or 2 and Y is a straight-chain or branched alkyl group with up to 12 C atoms, it being possible for 1 or 2 CH2 groups to be replaced by O atoms, or, if n is 1 or 2, Y is also F, Cl, Br or CN, exhibit electro-optical properties, which are independent of temperature over a wide range.
Inventors:
GERUTO HEPUKE
FUEODOORU ESUTORAIHERU
FUEODOORU ESUTORAIHERU
Application Number:
JP19274384A
Publication Date:
June 03, 1985
Filing Date:
September 17, 1984
Export Citation:
Assignee:
MERCK PATENT GMBH
International Classes:
C09K19/06; C09K19/14; C09K19/20; C09K19/22; C09K19/24; C09K19/26; C09K19/30; C09K19/32; C09K19/34; C09K19/58; G02F1/13; (IPC1-7): C09K19/06; G02F1/13
Attorney, Agent or Firm:
Takao Minami