LIQUID-CRYSTAL 5-PHENYLPYRIMIDINE DERIVATIVES HAVING SC OR SC PHASES AND A PROCESS FOR PREPARING THEM

• Main Authors: MULLER, INGRID, ESCHER, CLAUS, HEMMERLING, WOLFGANG, OHLENDORF, DIETER, DUBAL, HANS - ROLF, WINGEN, RAINER
• Format: Patent
• Language: English; Korean
• Published: 16.09.1996
• Edition: 6
• Subjects: ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; HETEROCYCLIC COMPOUNDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC CHEMISTRY; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

내용없음 The liquid-crystalline 5-phenylpyrimidine derivatives have an Sc or Sc<*> phase and are described by the formula (I) in which the symbols have the following meaning: R and R denote identical or different, straight-chain or branched alkyl or alkenyl groups having k to 16 carbon atoms, with or without an asymmetric carbon atom, it also being possible for one or more non-adjacent CH2 groups to be replaced by -O- and/or -S- -A and -B in each case denote or in which the radicals R , R are in each case on the phenylene portion of -A, -B and m and n denote 0 or 1, but m and n do not denote simultaneously 1, with the following provisos: a) for m = n = 0 k is 8 and in R the CH2 group next to the phenyl ring is replaced by -O-; b) for m = 1 and n = 0 k is 2, and c) for m = 0 and n = 1 k is 2 and in R the CH2 group next to the phenyl ring is replaced by -O-.