Liquid crystal compounds having ether tail moiety

Details Liquid crystal compounds having ether tail moiety Liquid crystal compounds having ether tail moiety

C - Chemistry, Metallurgy

07

C

260/154, 260/474

C07C 69/618 (2006.01) C07C 69/76 (2006.01) C09K 19/20 (2006.01) C09K 19/22 (2006.01) C09K 19/24 (2006.01) C09K 19/26 (2006.01)

Patent

CA 1325640

LIQUID CRYSTAL COMPOUNDS HAVING ETHER TAIL MOIETY ABSTRACT OF THE DISCLOSURE Disclosed are smectic liquid crystal compounds exhibiting ferroelectric behavior and having the formula Image wherein R1 is alkyl or alkoxyalkyl, R2 and R3 are each alkylene, a is an integer of at least one, b is zero or one, R* is an optically active group containing an asymmetric center and -Z- is an organic divalent core radical having parallel or coaxially extending bonds at the terminal ends thereof, the core radical having an axial ratio of at least two and being characterized by an essentially rigid and flat molecular structure. Presence of the ether-interrupted hydrocarbon tail moiety at the terminal end of the compounds provides a lowering in observed temperatures of phase transition.

541794

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