中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

175 records (took 0.024 seconds)

    3.
    发明专利
    未知

    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.

    5.
    发明专利
    未知

    公开(公告)号：NO170498B

    公开(公告)日：1992-07-13

    申请号：NO862608

    申请日：1986-06-27

    Applicant: HOECHST AG

    Inventor： OHLENDORF DIETER ,  INTERTHAL WERNER ,  STOLL FRIEDRICH

    IPC: C23F11/14 ,  C23F11/16

    Abstract: Use of the compounds of the formula in which R1 denotes C12-C26-alkyl or C12-C26alkenyl, n denotes a number from 0 to 5, K(+) denotes a group of the formulae or a group of the formula -(C2H4O)xH, x denotes a number from 1 to 3, A(-denotes an anion, R9 denotes a group of the formula R1'-(OCH2CH2)n-, C8-C18-alkylaryl or aryl-C8-C18-alkyl, R1' denotes C14-C22-alkyl or C14-C22-alkenyl, n denotes a number from 0 to 5 and the radicals R10 are identical and denote C1-C4-alkyl or C1-C4-hydroxyalkyl, as corrosion protection agents for metallic materials in aqueous media.

    6.
    发明专利
    未知

    公开(公告)号：NO169226B

    公开(公告)日：1992-02-17

    申请号：NO883048

    申请日：1988-07-07

    Applicant: HOECHST AG

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

    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

    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).

    PROCESS FOR THE AVOIDANCE OF CORROSION OF METALLIC MATERIALS
    7.
    发明专利
    PROCESS FOR THE AVOIDANCE OF CORROSION OF METALLIC MATERIALS 未知

    公开(公告)号：CA1292864C

    公开(公告)日：1991-12-10

    申请号：CA512608

    申请日：1986-06-27

    Applicant: HOECHST AG

    Inventor： OHLENDORF DIETER ,  INTERTHAL WERNER ,  STOLL FRIEDRICH

    IPC: C23F11/12 ,  C23F11/14 ,  C23F11/16

    Abstract: of the disclosure: Use of the compounds of the formula R1-(C2H4O)n-K(+) A(-) (I) or (II) in which R1 denotes C12-C26-alkyl or C12-C26-alkenyl, n denotes a number from 0 to 5, K(+) denotes a group of the formulae or , R2 C1-C3-Alkyl, R3 C1-C3-Alkyl or a group of the formula -(C2H4O)xH, x denotes a number from 1 to 3, A(-) denotes an anion, R9 denotes a group of the formula R?-(OCH2CH2)n-, C8-C18-alkylaryl or aryl-C8-C18-alkyl, R? denotes C14-C22-alkyl or C14-C22-alkenyl, n denotes a number from 0 to 5 and the radicals R10 are identical and denote C1-C4-alkyl or C1-C4-hydroxyalkyl, as corrosion protection agents for metallic materials in aqueous media.

Patent Agency Ranking