公开(公告)号：NO902111D0

公开(公告)日：1990-05-11

申请号：NO902111

申请日：1990-05-11

Applicant: HOECHST AG

Inventor： MEIJERE ARMIN DE ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  HARADA TAKAMASA ,  HEMMERLING WOLFGANG ,  ILLIAN GERHARD ,  MUELLER INGRID ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: G02F1/13 ,  C07C13/04 ,  C07C13/28 ,  C07C22/00 ,  C07C25/00 ,  C07C43/184 ,  C07C43/205 ,  C07C43/21 ,  C07C69/92 ,  C07C255/45 ,  C07D213/30 ,  C07D237/08 ,  C07D237/14 ,  C07D237/16 ,  C07D237/18 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D241/12 ,  C07D241/18 ,  C07D285/12 ,  C07D285/125 ,  C07D285/13 ,  C07D405/12 ,  C09K19/20 ,  C09K19/30 ,  C09K19/34 ,  C07D239/00

Abstract: The novel cyclopropylalkyl or -alkenyl compounds have the general formula In this formula, the symbols A , A , A denote unsubstituted and in particular substituted (by halogen or CN) aromatic or heteroaromatic molecular building blocks, such as 1,4-phenylene or pyrimidine-2,5- diyl, which are linked via a single bond or via functional groups M , M , such as CO-O or CH2-O; H and m are zero or 1; j, l, n are zero, 1 or 2. The radicals are R , R , R are H or alkyl/alkenyl, R is alkyl/alkenyl or a substituent known from LC chemistry, such as an alpha - haloalkanoic acid radical. G denotes alkylene or alkenylene.

公开(公告)号：NO893779A

公开(公告)日：1990-03-26

申请号：NO893779

申请日：1989-09-22

Applicant: HOECHST AG

Inventor： HEMMERLING WOLFGANG ,  MUELLER INGRID ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  ILLIAN GERHARD ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: C07D303/48 ,  C07D317/32 ,  C07D317/72 ,  C07D405/12 ,  C07D405/14 ,  C07D407/12 ,  C07D407/14 ,  C07D409/12 ,  C07D409/14 ,  C07D417/12 ,  C07D417/14 ,  C09K19/34 ,  C09K19/58 ,  C07D405/00

CPC classification number: C07D317/72 ,  C07D303/48 ,  C07D405/12 ,  C09K19/58 ,  C09K19/588

公开(公告)号：NO893778A

公开(公告)日：1990-03-26

申请号：NO893778

申请日：1989-09-22

Applicant: HOECHST AG

Inventor： MUELLER INGRID ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  HEMMERLING WOLFGANG ,  ILLIAN GERHARD ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: G02F1/13 ,  C07D317/24 ,  C07D317/32 ,  C07D405/12 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58

CPC classification number: C07D405/12 ,  C07D317/32 ,  C09K19/3405 ,  C09K19/3441 ,  C09K19/3444 ,  C09K19/3466 ,  C09K19/3491 ,  C09K19/3497

公开(公告)号：DE3827600A1

公开(公告)日：1990-02-15

申请号：DE3827600

申请日：1988-08-13

Applicant: HOECHST AG

Inventor： HEMMERLING WOLFGANG DR ,  DUEBAL HANS-ROLF DR ,  ESCHER CLAUS DR ,  ILLIAN GERHARD DR ,  INOGUCHI YOSHIO DR ,  MUELLER INGRID DR ,  MURAKAMI MIKIO ,  OHLENDORF DIETER DR ,  WINGEN RAINER DR

IPC: G02F1/13 ,  C07F7/08 ,  C07F7/10 ,  C09K19/40 ,  C09K19/42 ,  C09K19/46 ,  G02F1/137 ,  G02F1/141

Abstract: The novel silylalkyl or -alkenyl compounds conform to the general formula (I) in which A , A and A are aromatic or heteroaromatic molecular units such as 1,4-phenylene or pyrimidine-2,5-diyl which are linked via a single bond (where k and m are zero) or via functional groups M and M , such as CO-O or CH2-O; j, k, l, m and n are zero or 1 (j + l + n = 2 or 3), the radicals R , R , R and R are H or alkyl/alkenyl or cycloalkyl, the radicals R , R and R have a comparable meaning (H); R is alkyl/alkenyl or a substituent known from LC chemistry, such as an alpha -haloalkanoic acid radical. The compounds have liquid-crystalline phases, which are in some cases broad and polymorphous.

公开(公告)号：DE3827599A1

公开(公告)日：1990-02-15

申请号：DE3827599

申请日：1988-08-13

Applicant: HOECHST AG

Inventor： HEMMERLING WOLFGANG DR ,  DUEBAL HANS-ROLF DR ,  ESCHER CLAUS DR ,  ILLIAN GERHARD DR ,  INOGUCHI YOSHIO DR ,  MUELLER INGRID DR ,  MURAKAMI MIKIO ,  OHLENDORF DIETER DR ,  WINGEN RAINER DR

IPC: G02F1/13 ,  C07D307/24 ,  C07D307/56 ,  C07D405/12 ,  C07D405/14 ,  C07D407/12 ,  C07D407/14 ,  C07D409/12 ,  C07D409/14 ,  C07D417/12 ,  C07D417/14 ,  C09K19/54 ,  C09K19/58 ,  G02F1/137 ,  G02F1/141

Abstract: Optically active tetrahydrofuran-2-carboxylic acid esters containing a mesogenic molecular building block are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having high electroclinic coefficients. A further advantage is that they induce a helix of very low pitch, so they are also suitable for helix compensation in LC mixtures. The compounds are symbolised by the general formula in which the symbols and indices essentially have the following meanings: R = alkyl/alkenyl or tetrahydrofurancarbonyloxy or -thio; j, l and n = zero, 1 or 2; k and m = zero or 1; -A , -A and -A = phenylene, cycloalkylene or corresponding N-, O- or S-containing heterocycles; -M and -M = bridges, such as -CO-O-, -OCH2- or -CH=CH-; and X = O or S.

公开(公告)号：NO893779D0

公开(公告)日：1989-09-22

申请号：NO893779

申请日：1989-09-22

Applicant: HOECHST AG

Inventor： HEMMERLING WOLFGANG ,  MUELLER INGRID ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  ILLIAN GERHARD ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: C07D303/48 ,  C07D317/32 ,  C07D317/34 ,  C07D317/72 ,  C07D405/12 ,  C07D405/14 ,  C07D407/12 ,  C07D407/14 ,  C07D409/12 ,  C07D409/14 ,  C07D417/12 ,  C07D417/14 ,  C09K19/34 ,  C09K19/58 ,  C07D405/00

Abstract: Optically active 1,3-dioxolane-4-carboxylic acid esters and oxirane-2-carboxylic acid esters of the general formula (I) where R is, for example, C1-C16-alkyl or C1-C16-alkoxy, A , A and A are, for example, phenyl or pyrimidine-2,5-diyl, M and M are, for example, CO-O or CH2-CH2, j and l are 0, 1 or 2, k and m are 0 or 1, n is 0, 1 or 2, X is O or S and Ac is or where R , R , R , R and R are, for example, H or methyl, are particularly suitable doping agents for liquid-crystalline mixtures since they induce a high spontaneous polarisation and considerably reduce the melting point.

公开(公告)号：NO893241D0

公开(公告)日：1989-08-11

申请号：NO893241

申请日：1989-08-11

Applicant: HOECHST AG

Inventor： HEMMERLING WOLFGANG ,  DUEBAL HANS-ROLF ,  ESCHER CLAUS ,  ILLIAN GERHARD ,  INOGUCHI YOSHIO ,  MUELLER INGRID ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: G02F1/13 ,  C07D307/24 ,  C07D307/56 ,  C07D405/12 ,  C07D405/14 ,  C07D407/12 ,  C07D407/14 ,  C07D409/12 ,  C07D409/14 ,  C07D417/12 ,  C07D417/14 ,  C09K19/54 ,  C09K19/58 ,  G02F1/137 ,  G02F1/141 ,  C09K19/00

Abstract: Optically active tetrahydrofuran-2-carboxylic acid esters containing a mesogenic molecular building block are suitable as dopes in liquid-crystal mixtures. They result in liquid-crystalline ferroelectric phases having short switching times and in electroclinic phases having high electroclinic coefficients. A further advantage is that they induce a helix of very low pitch, so they are also suitable for helix compensation in LC mixtures. The compounds are symbolised by the general formula in which the symbols and indices essentially have the following meanings: R = alkyl/alkenyl or tetrahydrofurancarbonyloxy or -thio; j, l and n = zero, 1 or 2; k and m = zero or 1; -A , -A and -A = phenylene, cycloalkylene or corresponding N-, O- or S-containing heterocycles; -M and -M = bridges, such as -CO-O-, -OCH2- or -CH=CH-; and X = O or S.

公开(公告)号：DE69128625T2

公开(公告)日：1998-07-16

申请号：DE69128625

申请日：1991-07-17

Applicant: HOECHST AG

Inventor： MURAKAMI MIKIO ,  HARADA TAKAMASA

IPC: C08G63/60 ,  C09K19/02 ,  C09K19/56 ,  G02F1/1337

Abstract: PCT No. PCT/EP91/01339 Sec. 371 Date Jan. 12, 1993 Sec. 102(e) Date Jan. 12, 1993 PCT Filed Jul. 17, 1991 PCT Pub. No. WO92/01728 PCT Pub. Date Feb. 6, 1992.A liquid-crystal display device having a liquid-crystal layer held between a pair of substrates each having a transparent electrode and an alignment film formed successively on the inner surface, characterized in that the material of the alignment film on at least one of the opposing faces between the substrates is a polymer having recurring units (I, II and III), the recurring unit (I) being represented by formula (A), (A) recurring unit II being a dioxyaryl portion represented by the formula -O-Ar-O- (where Ar is a divalent group having at least one aromatic ring which may contain at least one substituent selected from a C1-4 alkyl group, a C1-4 alkoxy group, a halogen, a phenyl and a substituted phenyl), and recurring unit (III) being a dicarboxyaryl portion represented by formula (B) (B) (where Ar' may be the same as or different from Ar and has the same meaning as Ar).

公开(公告)号：DE59010096D1

公开(公告)日：1996-03-14

申请号：DE59010096

申请日：1990-06-20

Applicant: HOECHST AG

Inventor： ESCHER CLAUS DR ,  HEMMERLING WOLFGANG DR ,  ILLIAN GERHARD DR ,  HARADA TAKAMASA ,  MURAKAMI MIKIO

IPC: G02F1/1337 ,  C09K19/02 ,  C09K19/34 ,  C09K19/58 ,  G02F1/137 ,  G02F1/141

Abstract: Liquid-crystalline materials are becoming increasingly important in electrooptical switching and display devices. Recently, ferroelectric liquid-crystalline mixtures have also been investigated widely and employed in displays. A particularly important physical parameter for describing FLC mixtures is the spontaneous polarisation (Ps). On the one hand, a high spontaneous polarisation results in short response times, but on the other hand, high Ps values result in optical hysteresis, which causes, inter alia, so-called "ghost images". The use of FLC mixtures of high spontaneous polarisation (Ps 20 nC/cm ) and a natural helical pitch of less than half the layer thickness in an SSFLC display having a layer thickness of from 1 to 10 mu m allows the problem of optical hysteresis to be circumvented, in spite of the high spontaneous polarisation. FLC mixtures in which Ps is > 40 nC/cm can also be switched under these conditions.

公开(公告)号：DE59006783D1

公开(公告)日：1994-09-15

申请号：DE59006783

申请日：1990-03-07

Applicant: HOECHST AG

Inventor： MUELLER INGRID ,  DUEBAL HANS-ROLF ,  ESCHER KLAUS ,  HEMMERLING WOLFGANG ,  ILLIAN GERHARD ,  MURAKAMI MIKIO ,  OHLENDORF DIETER ,  WINGEN RAINER

IPC: G02F1/13 ,  C07D317/30 ,  C07D317/72 ,  C07D405/12 ,  C07D409/12 ,  C09K19/06 ,  C09K19/34 ,  C09K19/58

Abstract: Optically active 1,3 dioxolane derivatives containing a mesogenic residue, of the general formula (I), are suitable as doping agents especially in ferro-electrical liquid crystal mixtures. The meanings of the symbols in the general formula are: R?1 is constructed similarly to the part of the general formula to the right of X or an alkyl or alkylene residue which may be substituted; R?2, R?3, R?4 = H or alkyl (R?4 may also be alkenyl) which may also be substituted [R?2, R?3 together with the C(2) of the dioxolane ring may be a cycloaliphate or a keto group]; j, l, n = zero, 1 or 2 and k, m = zero or 1 provided that if k = zero, n = zero also, if n = zero, m = zero also and l j + l + n 3; -A?1, -A?2, -A?3 = aromatic, heterocyclic or aliphatic ring system; -M?1,- M?2 = -CO-O, -O-CO, -CH2?CH2?, -CH=CH, -CH2?O, -OCH2?, -C=C and X = CH=CH, CH2?-CH2?. The special advantage of the compounds with the general formula (I) is that they can induce a high twisting capacity in a cholesteric phase without substantially affecting in the smectic C* phase the value of the spontaneous polarisation already in the mixture. They are therefore suitable for pitch compensation, especially for ferro-electrical liquid crystal mixtures.