Patent ID: 9605204
Date: 2017-03-28
CPC Classifications: C09K

Claim:
1. A liquid crystal medium, comprising 10% to 85% by weight, based on the medium, of a first component, component A, consisting of one, two, three or more compounds of formula I wherein L 1 is R 12 or X 1 , R 11 is C n H 2n+1 , O—C n H 2n+1 or CH 2 ═CH—(CH 2 ) Z , R 12 is C m H 2m+1 or O—C m H 2m+1 or (CH 2 ) Z —CH═CH 2 , X 1 is F or Cl, Y 11 and Y 12 are independently of one another H or F, n and m independently of one another, denote an integer in the range from 1 to 9 and z denotes 0, 1, 2, 3 or 4, and a second component, component B, consisting of one, two, three or more compounds of formulae III, IV, V or VI wherein L 31 denotes R 31 , L 32 denotes R 32 , R 31 and R 32 , independently of one another, denote H, non-fluorinated alkyl or alkoxy having 1 to 15 or non-fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms, Z 31 to Z 33 , independently of one another, denote trans-CH═CH—, trans-CH═CF—, trans-CF═CH—, trans-CF═CF— or a single bond, denotes denote independently of one another with one of being alternatively may denote and R 33 to R 35 , independently of one another, denote non-fluorinated alkyl or alkoxy having 1 to 15 or non-fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms, wherein R 41 to R 43 , independently of one another, denote non-fluorinated alkyl or non-fluorinated alkoxy, each having 1 to 15 C atoms, non-fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl, each having 2 to 15 C atoms, or cycloalkyl, alkylcycloalkyl, cycloalkenyl, alkylcycloalkenyl, alkylcycloalkylalkyl or alkylcycloalkenylalkyl, each having up to 15 C atoms and L 4 denotes F, or non-fluorinated alkyl or non-fluorinated alkoxy, each having 1 to 15 C atoms, non-fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl, each having 2 to 15 C atoms, wherein R 51 and R 52 , independently of one another, denote halogen, non-fluorinated alkyl or fluorinated alkyl or non-fluorinated alkoxy or fluorinated alkoxy, each having 1 to 15 C atoms, or non-fluorinated alkenyl or fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl or fluorinated alkoxyalkyl, each having 2 to 15 C atoms, in which, in addition, one or more “—CH 2 —” groups may be replaced, independently of one another, by cycloalkyl having 3 to 6 C atoms, and alternatively, in addition, one of R 51 and R 52 or both R 51 and R 52 denote H, L 51 to L 54 on each appearance, in each case independently of one another, denote H, alkyl having 1 to 15 C atoms, F or Cl, and i denotes an integer in the range from 5 to 15, and wherein R 61 and R 62 , independently of one another, denote halogen, non-fluorinated alkyl or fluorinated alkyl or non-fluorinated alkoxy or fluorinated alkoxy, each having 1 to 15 C atoms, or non-fluorinated alkenyl or fluorinated alkenyl, non-fluorinated alkenyloxy or non-fluorinated alkoxyalkyl or fluorinated alkoxyalkyl, each having 2 to 15 C atoms, in which, in addition, one or more “—CH 2 —” groups may be replaced, independently of one another, by cycloalkyl having 3 to 6 C atoms, R 63 and R 64 , independently of one another, denote alkyl having 1 to 15 C atoms, and, alternatively, one of them also denotes H, Z 6 denotes —C≡C— or a single bond.