Liquid crystal materials
AssigneeThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britian and Northern Ireland
InventorsNeil Carr, Jennifer Constant, George W. Gray, Damien G. McDonnell, Edward P. Raynes
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Abstract
A liquid crystal material which comprises a mixture of compounds includes at least one low viscosity additive compound of Formula (I) as follows: A--CH.sub.2.CH.sub.2 --B Formula (I) wherein A is selected from: ##STR1## and B is selected from: ##STR2## where R.sub.1 is selected from alkyl, alkoxy, alkylcarbonyloxy and alkoxycarbonyloxy; and R.sub.2 is alkyl; and where ##STR3## is a benzene ring; ##STR4## is a cyclohexane ring, which is in the trans-configuration if di-substituted; and ##STR5## is a bicyclo(2,2,2)octane ring.
Claims23
A liquid crystal material which comprises a mixture of compounds at least one of which is a low viscosity additive compound wherein the improvement comprises in said low viscosity additive compound being a compound of Formula (I) as follows:
- A--CH.sub.2.CH.sub.2 --B Formula (I)
- wherein A is selected from:
- ##STR76## and B is selected from:
- ##STR77## where R.sub.1 is selected from alkyl, alkoxy, alkylcarbonyloxy, and alkoxycarbonyloxy;
- and
- R.sub.2 is alkyl;
- and where ##STR78## is a benzene ring;
- ##STR79## is a cyclohexane ring, which is in the trans-configuration if di-substituted;
- and ##STR80## is a bicyclo(2,2,2)octane ring.
Dependencies are inferred from the claim text.