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    33.
    发明专利
    未知

    公开(公告)号：NO881282L

    公开(公告)日：1988-09-26

    申请号：NO881282

    申请日：1988-03-23

    Applicant: HOECHST AG

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

    IPC: C07D239/26 ,  C07D239/34 ,  C07D239/38 ,  G02F1/137 ,  C09K19/34 ,  G02F1/141

    Abstract: 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-.

    34.
    发明专利
    未知

    公开(公告)号：NO881281L

    公开(公告)日：1988-09-26

    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 ,  C09K19/08

    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.

    36.
    发明专利
    未知

    公开(公告)号：NO884137D0

    公开(公告)日：1988-09-16

    申请号：NO884137

    申请日：1988-09-16

    Applicant: HOECHST AG

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

    IPC: C09K19/34 ,  C09K19/46 ,  C09K19/42 ,  C09K19/58 ,  G02F1/137 ,  G02F1/141 ,  C09K19/00 ,  G02F1/13

    Abstract: The novel liquid-crystalline mixtures (in the case of ferroelectric behavior they additionally contain an optically active compound as dope) are constructed from at least 2 mixture components of the general formula (I): (I) wherein n=6 to 14 and x=2 to 14. In addition, the mixtures may also contain cyclohexanecarboxylates of the general formula (II) (II) where R1=(C10-C16) or (C8-C14)alkoxy and R2=(C2-C9)alkyl, alkenyloxyphenylpyrimidine derivatives of the general formula (III) (III) where R3=(C7-C16)alkyl or (C6-C14)alkoxy and y=4-14, and/or alkoxyphenyl derivatives of alkylpyrimidine, of the general formula (IV) (IV) where m and p=6 to 14.

    39.
    发明专利
    未知

    公开(公告)号：AT181967T

    公开(公告)日：1999-07-15

    申请号：AT96908045

    申请日：1996-03-15

    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.

    40.
    发明专利
    未知

    公开(公告)号：DE59307349D1

    公开(公告)日：1997-10-16

    申请号：DE59307349

    申请日：1993-06-21

    Applicant: MATSUSHITA ELECTRIC IND CO LTD ,  HOECHST AG

    Inventor： JUNGBAUER DIETMAR ,  RIEGER HEINZ ,  ESCHER CLAUS ,  ILLIAN GERHARD ,  NAGAO KAZUYA ,  MURAKAMI MIKIO ,  UOMURA TSUYOSHI ,  OHNISHI HIROYUKI ,  FUJIWARA SHOZO

    IPC: G02F1/137 ,  G02F1/133 ,  G02F1/1337 ,  G02F1/141 ,  G09G3/36

    Abstract: PCT No. PCT/EP93/01574 Sec. 371 Date May 1, 1995 Sec. 102(e) Date May 1, 1995 PCT Filed Jun. 21, 1993 PCT Pub. No. WO94/01802 PCT Pub. Date Jan. 20, 1994A process for the stabilization of the spatial alignment of the smectic layers in an FLC switching and/or display element, in which the original position of the smectic layers has been modified by electrical field treatment, which comprises alternately switching the elements during non-operation and/or when a certain temperature is exceeded which is above a predetermined temperature range which includes the operating temperature region and/or when the temperature falls below a certain temperature which is below a predetermined temperature range which includes the operating temperature region. Use of the process according to the invention ensures long-term functioning of the switching and display device, even in the case of repeated regeneration of the quasi-bookshelf geometry, and prevents worsening in the contrast and brightness and the occurrence of ghost images.

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