Liquid crystalline compounds and mixtures

Details Liquid crystalline compounds and mixtures Liquid crystalline compounds and mixtures

1988-07-13

1990-04-10

Gron, Teddy S.

Compositions

Radioactive compositions

Nuclear reactor fuel

2522995, 2522996, 25229961, 25229963, 25229966, 350350S, 544335, 544242, 549370, 549373, G02F 113, C07C16104, C07D23926, C07D31906, C09K 1934, C09K 1930

Patent

active

049154800

ABSTRACT:
This invention concerns compounds of the formula: ##STR1## wherein X is a single covalent bond, --CH.sub.2 CH.sub.2 --, 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a group of the formula: ##STR2## ring A is trans-1,4-cyclohexylene or, when X is a single covalent bond, ring A may also be 1,4-phenylene, a 2,5-disubstituted pyrimidine ring or a trans-2,5-disubstituted m-dioxane ring; and

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