Liquid crystalline naphthalenes - 佰腾网专利查询 - 全球专利搜索领导品牌

Naphthalene derivatives of the formula I <IMAGE> in which R<1> is an alkyl or alkenyl radical which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen and has 1 to 15 carbon atoms, it also being possible for one or more CH groups in these radicals to be replaced by <IMAGE> in such a manner that oxygen atoms are not linked directly to one another, <IMAGE> m is 0, 1 or 2, n is 0 or 1, where m + n is 1 or 2, Z<1> and Z<2> are each -CH2CH2-, -CC- or a single bond, L<1> and L<2> are H or F, X is an alkyl or alkoxy radical which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen and has 1 to 15 carbon atoms, or is OH, CN, NCS or Q-Y, where Q is a single bond, (CF2)r or @@@@ O(CF2)r r is 1 or 2, and @@@@ Y is H, F, Cl or Br, with the provisos that a) in the case where m = 0, Z<2> = a single bond, n = 1 and X = CN or @@ CF3, L<1> is F, b) in the case where m = 0,Z<2> = a single bond, n = 1 and X = alkyl, @@ alkoxy or F, L<1> and L<2> are identical @@ and are F, can be used as components of liquid-crystalline media. <IMAGE> - 佰腾网专利查询 - 全球专利搜索领导品牌