Liquid crystalline rylene tetracarboxylic acid derivatives and use thereof

摘要

Rylene tetracarbonic acid derivatives (A). Rylene tetracarbonic acid derivatives (A) of formula (I) or (II). Rn1-Rn4 : H, F, Cl, Br or CN (when n is 1 or 2), or H, F, Cl or Br (when n is 3 or 4); Ra, Rb : H or alkyl; X 1>(x+1)-valent residue; X 2>(y+1)-valent residue; x, y : 2-6; Ri, Riii : 4-30C alkyl (which is not interrupted by one or more adjoining oxygen atom); and n : 1-4. Independent claims are included for the preparations of (I). [Image].