中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

83 records (took 0.02 seconds)

    13.
    发明专利
    未知

    公开(公告)号：DE3638119A1

    公开(公告)日：1988-05-11

    申请号：DE3638119

    申请日：1986-11-08

    Applicant: HOECHST AG

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

    IPC: C04B35/64 ,  B22F3/14 ,  B22F3/15 ,  B23B27/14 ,  C04B35/10 ,  C04B35/56 ,  C04B35/58 ,  C04B35/645 ,  C04B35/80 ,  C04B35/81 ,  C04B41/50 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  C07C20060101 ,  C07C69/712 ,  C07C69/773 ,  C07C69/92 ,  C07D239/26 ,  C07D239/34 ,  C07D405/12 ,  C09K19/20 ,  C09K19/54 ,  C09K19/58 ,  G02F1/13 ,  C07C69/90 ,  C09K19/04 ,  G02F1/137 ,  G09F9/35

    Abstract: PCT No. PCT/EP87/00653 Sec. 371 Date May 5, 1989 Sec. 102(e) Date May 5, 1989 PCT Filed Nov. 2, 1987 PCT Pub. No. WO88/03525 PCT Pub. Date May 19, 1988.Arylcarboxylates of 2-hydroxypropionates are known, amongst other compounds, as dopes for converting tilted smectic liquid-crystal phases into ferroelectric liquid-crystal phases. The novel chiral aryloxypropionates of the general formula are two-fold chiral and in which the symbols have the following meaning: R1 denotes a straight-chain alkyl or alkoxy radical having 1 to 16 carbon atoms or a branched alkyl or alkoxy radical having 4 to 16 carbon atoms, it being possible for one or two non-adjacent CH2 groups to be replaced by a sulfur and/or oxygen atom; A denotes one, two or three aromatic or heteroaromatic rings which are linked to one another directly or via one or two COO groups; B denotes a chemical bond or one or two aromatic or heteroaromatic rings which are linked directly to one another; R2 (a) if B is a chemical bond, denotes an alkyl radical having 2 to 10 carbon atoms which contains an asymmetrical carbon atom which is substituted by CH3, halogen or a COOC2H5 group, or an alkyl radical having 3 to 10 carbon atoms which contains two adjacent, asymmetrical carbon atoms of which one is substituted by halogen and the other by a CH3 group, or which, together with an O, form an oxirane ring, or (b) if B denotes one or two aromatic or heteroaromatic rings which are bonded directly to one another, denotes alkoxy radicals having the same number of carbon atoms and the same structure of the alkyl group as under (a).

    15.
    发明专利
    未知

    公开(公告)号：DE3212969A1

    公开(公告)日：1983-10-13

    申请号：DE3212969

    申请日：1982-04-07

    Applicant: HOECHST AG

    Inventor： OHLENDORF DIETER DR ,  INTERTHAL WERNER DR

    IPC: C10M173/02 ,  C09K3/00 ,  C09K23/18 ,  C10N30/00 ,  C10N40/08 ,  F15D1/00 ,  F17D1/16 ,  C10M7/30 ,  B01F17/18

    Abstract: 1. A process for reducing the drag of aqueous media in turbulent or pulsating flow, which comprises adding to the aqueous medium from 0.01 to 2% by weight of a compound of the formula R1 -K**+ A**- in which K denotes a group of the formula see diagramm : EP0091086,P7,F3 R2 denotes C1 -C3 -alkyl, preferably methyl, A denotes an anion of the following formulae see diagramm : EP0091086,P7,F4 R3 denotes C7 -C10 -alkyl or C7 -C10 -Alkenyl and R1 , if A = R3 COO**- , denotes C16 -alkyl or C16 -alkenyl, if A = thiocyanate, denotes C16 -C26 -alkyl or C16 -C26 -alkenyl and, if A = p-toluenesulfonate, denotes C12 -C26 -alkyl or C12 -C26 -alkenyl, except cetyltrimethylammonium-p-toluenesulfonate.

    17.
    发明专利
    未知

    公开(公告)号：DE3885128D1

    公开(公告)日：1993-12-02

    申请号：DE3885128

    申请日：1988-03-22

    Applicant: HOECHST AG

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

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

    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.

Patent Agency Ranking