公开(公告)号：NO881281D0

公开(公告)日：1988-03-23

申请号：NO881281

申请日：1988-03-23

Applicant: HOECHST AG

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

IPC: G02F1/137 ,  C09K19/34 ,  C09K19/42 ,  G02F1/13 ,  G02F1/141 ,  C09K19/00

Abstract: The compounds of the general formula (I) (I) are particularly highly suitable as components of smectic, liquid-crystal mixtures, the symbols having the following meaning: R1 and R2 denote identical or different, straight-chain or branched alkyl or alkenyl groups which can contain asymmetric carbon atoms, containing 2 to 16 carbon atoms, in which one or more non-adjacent -CH2- groups can be replaced by -O- and/or -S-, -A and -B each denote group in which the radicals R1, R2, in each case, are situated at the phenylene part of -A, -B and m and n denote 0 or 1, but m+n is always zero or 1.

公开(公告)号：GR3031268T3

公开(公告)日：1999-12-31

申请号：GR990402366

申请日：1999-09-22

Applicant: HOECHST AG

Inventor： KUEHN HEINRICH ,  ESCHER CLAUS ,  LANDES KLAUS ,  HASLBECK PETER ,  GASCHLER OTFRIED ,  MUELLER MARKUS ,  MUNTWYLER PETER

IPC: B05B7/22 ,  B22D23/00 ,  B41N1/00 ,  B41N3/03 ,  B41N7/04 ,  C23C4/00 ,  C23C4/02 ,  C23C4/10 ,  C23C4/12 ,  F24J2/48 ,  H05H1/42

Abstract: The invention concerns a method of coating a base with a plasma-sprayed layer with a spray powder contained in the molten state in the plasma. In the proposed process, the powder is introduced via powder feed ducts in the vicinity of the neutrode(s) or anode(s) or between the two into a channel of a plasma spray device, at least one arc being at least 20 mm in length at least some of the time and the base to be coated being a so-called continuous strip or large-surface unit of at least 0.005 m . The invention also concerns a device for coating a base, comprising a number of plasma spray devices and at least one noise-protection cabinet; the plasma spray devices each comprise at least one neutrode and at least one anode for producing an arc of at least 20 mm in length and for heating a spray powder. The spray powder is introduced in the vicinity of the anode(s) or neutrode(s) and/or between the two, and the device is provided with a device for micro-roughing the article in the form of a mechanical, physical or radiation micro-roughing unit.

公开(公告)号：DE59108410D1

公开(公告)日：1997-01-23

申请号：DE59108410

申请日：1991-07-19

Applicant: HOECHST AG

Inventor： BLATTER KARSTEN ,  ESCHER CLAUS ,  HARADA TAKAMASA - - ,  HARNISCHFEGER PETER ,  HEMMERLING WOLFGANG

IPC: C07D405/12 ,  C09K19/34 ,  C09K19/58 ,  G02F1/13

Abstract: PCT No. PCT/EP91/01365 Sec. 371 Date Jan. 21, 1993 Sec. 102(e) Date Jan. 21, 1993 PCT Filed Jul. 19, 1991 PCT Pub. No. WO92/01685 PCT Pub. Date Jun. 2, 1992.Compounds of the formula (I) in which the symbols have the following meanings: R1 is straight-chain or branched (C3-C2)alkenyl containing a terminal double bond, it being possible for one or two non-adjacent CH2 groups to be replaced by O and/or S atoms, A and B, independently of one another, are phenyl, diazine-2,5-diyl or diazine-3,6-diyl, with the proviso that one of the groups A or B is phenyl and the other is diazine, X is O or S, R2, R3 and R4, independently of one another, are H, straight-chain (C1-C10)alkyl or branched (C3 -C10 )alkyl, R2, R3 and R4 not simultaneously being H, have the property of increasing the phase width in CC mixtures or depressing the melting point.

公开(公告)号：DE59008550D1

公开(公告)日：1995-03-30

申请号：DE59008550

申请日：1990-11-26

Applicant: HOECHST AG

Inventor： ESCHER CLAUS ,  HARADA TAKAMASA ,  ILLIAN GERHARD ,  ROESCH NORBERT ,  WINGEN RAINER

IPC: C09K20060101 ,  C09K19/02 ,  C09K19/34 ,  C09K19/52 ,  C09K19/58

公开(公告)号：NO176276C

公开(公告)日：1995-03-08

申请号：NO884136

申请日：1988-09-16

Applicant: HOECHST AG

Inventor： WINGEN RAINER ,  DUBAL HANS-ROLF ,  ESCHER CLAUS ,  HEMMERLING WOLFGANG ,  MULLER INGRID ,  OHLENDOF DIETER

IPC: C07D239/26 ,  C07D239/34 ,  C09K19/34 ,  C09K19/46 ,  G02F1/137 ,  G02F1/141 ,  G02F1/13 ,  G09F9/35

Abstract: Phenylpyrimidinyl trans-cyclohexanecarboxylates of the formula … … form, in addition to a relatively broad nematic phase, a smectic C phase if R denotes an alkyl radical having 10 to 16 carbon atoms, in particular 11 to 16 carbon atoms, or an alkyloxy radical having 8 to 14 carbon atoms and R denotes an alkyl radical having 2 to 9 carbon atoms. Accordingly, they are suitable in particular as components of liquid-crystalline mixtures having a smectic C phase, since they induce a relatively broad nematic phase or widen a narrow nematic phase present and enlarge the temperature range of the smectic C phase towards low, but in particular towards high temperatures.

公开(公告)号：PL165258B1

公开(公告)日：1994-12-30

申请号：PL28803890

申请日：1990-11-30

Applicant: HOECHST AG

Inventor： ESCHER CLAUS ,  HARADA TAKAMASA ,  ILLIAN GERHARD ,  ROESCH NORBERT ,  WINGEN RAINER

IPC: C09K20060101 ,  C09K19/02 ,  C09K19/34 ,  C09K19/52 ,  C09K19/58

公开(公告)号：DE59006153D1

公开(公告)日：1994-07-21

申请号：DE59006153

申请日：1990-03-21

Applicant: HOECHST AG

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

IPC: G02F1/13 ,  C09K19/34 ,  C09K19/42 ,  C09K19/46 ,  C09K19/58

Abstract: PCT No. PCT/EP90/00458 Sec. 371 Date Nov. 6, 1991 Sec. 102(e) Date Nov. 6, 1991 PCT Filed Mar. 21, 1990 PCT Pub. No. WO90/11336 PCT Pub. Date Oct. 4, 1990.The novel liquid-crystalline mixtures (in the case of ferroelectric behavior they additionally contain an optically active compound as dope) are based on at least two mixture components of the general formula (I) and at least one carboxylate of the general formula (II), (III) or (IV). (* CHEMICAL STRUCTURE *) (I) (* CHEMICAL STRUCTURE *) (II) X = O or a single bond (* CHEMICAL STRUCTURE *) (III) (* CHEMICAL STRUCTURE *) (IV) The mixtures have favorable properties for use in electrooptical display elements, such as high contrast, low melting point and short switching times.

公开(公告)号：PT100780A

公开(公告)日：1994-05-31

申请号：PT10078092

申请日：1992-08-14

Applicant: HOECHST AG

Inventor： ESCHER CLAUS ,  ROSCH NORBERT

IPC: C08G69/26 ,  C08G73/06 ,  C08G73/14 ,  C08G73/16 ,  C08G85/00 ,  C09K19/58 ,  G02F1/1337 ,  G02F1/141 ,  C09K19/00 ,  G09F9/35

公开(公告)号：GB2263982A

公开(公告)日：1993-08-11

申请号：GB9301786

申请日：1993-01-29

Applicant: DISPLAYTECH INC ,  HOECHST AG

Inventor： WAND MICHAEL D ,  HANDSCHY MARK ,  ESCHER CLAUS ,  VOHRA ROHINI

IPC: C07C69/92 ,  C07D213/30 ,  C07D213/64 ,  C07D213/65 ,  C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  C07D303/24 ,  C07D405/12 ,  C09K19/02 ,  C09K19/04 ,  C09K19/12 ,  C09K19/20 ,  C09K19/34 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  G02F1/1337 ,  G02F1/141 ,  G02F1/137

Abstract: Ferroelectric Liquid Crystals (FLCs) which exhibit a ferroelectric phase and a chiral nematic phase at temperatures above the ferroelectric phase are provided. The natural helix pitch of the FLC in the ferroelectric phase of these materials is sufficiently tighter than the thickness of the FLC layer such that it is not surface-stabilized. The chiral nematic phase has a natural helix pitch sufficiently greater than the cell thickness to facilitate alignment of the FLC in an FLC device to achieve high contrast. The FLCs of this invention are useful in making fast response, high contrast FLC electro-optic devices in which the FLC retains a helical director structure stable to unwinding.

公开(公告)号：NO924808D0

公开(公告)日：1992-12-11

申请号：NO924808

申请日：1992-12-11

Applicant: HOECHST AG

Inventor： HARADA TAKAMASA ,  ESCHER CLAUS ,  ILLIAN GERHARD ,  OHLENDORF DIETER ,  RIEGER HEINZ ,  ROESCH NORBERT

IPC: C09K19/52 ,  G02F20060101 ,  G02F1/1341 ,  G02F