Anthraquinone dyestuffs for liquid crystal dielectrics
申请人:Merck Patent Gesellschaft mit beschrankter Haftung
公开号:US04532069A1
公开(公告)日:1985-07-30
New anthraquinone dyestuffs of the general formula I ##STR1## wherein Hal is a halogen atom and the two radicals R are each H or NH.sub.2 and the alkyl group has 1-8 C atoms, exhibit a high order parameter and are suitable for use as components of liquid-crystal dielectrics.