Liquid-crystalline organopolysiloxanes and methods for their pre

Details Liquid-crystalline organopolysiloxanes and methods for their pre Liquid-crystalline organopolysiloxanes and methods for their pre

1989-04-13

1991-01-01

Maples, John S.

Compositions

Liquid crystal compositions

25229964, 25229965, 25229966, 25229967, 552505, 350350S, 350330, 427 541, 427 58, 4273741, 430 20, 524861, 524862, 524864, 528 15, 528 18, 528 26, C09K 1952

Patent

active

049816071

ABSTRACT:
What is disclosed and claimed are organopolysiloxanes having liquid crystalline properties at relatively low temperatures as compared to prior art materials. The organopolysiloxanes have this property by virtue of a unique chemical spacer between the siloxane and the mesogenic groups, which spacers are oxyalkylene groups.

REFERENCES:
patent: 4358391 (1982-11-01), Finkelmann et al.
patent: 4388453 (1983-06-01), Finkelmann et al.
patent: 4410570 (1983-10-01), Kreuzer et al.
patent: 4702558 (1987-10-01), Coles et al.
patent: 4774028 (1988-08-01), Imai et al.
F. A. Gemmell et al., "Effects of Mol. Structure on the Properties of Terminally Cyano-Substituted Side Chain Liquid Crystalline Polysiloxanes", Mol. Cryst. Liq. Cryst., 1985, vol. 122, pp. 205-218.

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