Liquid-crystal mixtures, process for their preparation and their

Details Liquid-crystal mixtures, process for their preparation and their Liquid-crystal mixtures, process for their preparation and their

1997-04-15

1998-10-27

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522997, 428 1, C09K 1932, C09K 1936

Patent

active

058274499

ABSTRACT:
Liquid-crystalline materials having a cholesteric phase with a pitch of less than 400 nm, comprising a) liquid-crystalline organosiloxanes containing dianhydrohexitol derivatives as chiral groups, and b) chiral monomeric additives which induce the same helicality as the respective liquid-crystalline organo-siloxanes.

REFERENCES:
patent: 4996330 (1991-02-01), Scherowsky et al.
patent: 5211877 (1993-05-01), Andrejewski et al.
patent: 5362315 (1994-11-01), Muller-Rees et al.
patent: 5502206 (1996-03-01), Zahn et al.
H. Finkelmann et al., Macromol. Chem. 179, 829-832 (1978) "Synthesis of Cholesteric Liquid Crystalline Polymers".
W. Noll Chemistry and Technology of Silicones, Academic Press, Orlando Fla., 1968, pp. 191-239.

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