Liquid crystalline halogen compounds, process for their...

C - Chemistry – Metallurgy – 07 – C

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31/105, 260/653.

C07C 25/18 (2006.01) C07C 17/093 (2006.01) C07C 43/225 (2006.01) C07C 43/29 (2006.01) C07C 205/06 (2006.01) C09K 19/12 (2006.01) C09K 19/30 (2006.01)

Patent

CA 1179689

Abstract of the Disclosure Liquid-crystalline halogen compounds of the formula Image wherein the ring A is 1,4-phenylene or trans-1,4-cyclo- hexylene; R1 is alkyl or alkoxy each of 1 to 12 carbon atoms or, when A is 1,4-phenylene, is also cyano; R2 is alkyl or alkoxy each of 1 to 12 carbon atoms or, when A is 1,4-cyclohexylene, is also chlorine or bromine; and X is fluorine, chlorine or hydrogen; with the proviso that at least one of the substituents R2 and X is a halogen atom are valuable components in liquid-crystalline dielectrics.

411267

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