Use of optically active 1,3-dioxolane-4-carboxylates as...

Details Use of optically active 1,3-dioxolane-4-carboxylates as... Use of optically active 1,3-dioxolane-4-carboxylates as...

C - Chemistry, Metallurgy

07

D

31/105, 260/251,

C07D 317/32 (2006.01) C07D 405/00 (2006.01) C07D 405/12 (2006.01) C07D 407/12 (2006.01) C07D 409/12 (2006.01) C09K 19/02 (2006.01) C09K 19/58 (2006.01)

Patent

CA 1339994

Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel, optically active 1,3-dioxolane-4-carboxylates. Optically active, mesogenic 1,3-dioxolane-4-carboxylates are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having large electroclinic coefficients. Their particular advantage is that they induce a helix of very large pitch, meaning that helix compensation by further dopes is unnecessary. In addition, 1,3- dioxolane-4-carboxylates exhibit high UV stability. The 1,3- dioxolane-4-carboxylates of the present invention are of the following general Formula (I): Image

564256

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