Verfahren zur Vermeidung der Korrosion metallischer Werkstoffe.
    1.
    发明公开
    Verfahren zur Vermeidung der Korrosion metallischer Werkstoffe. 失效
    用于防止金属材料的腐蚀的方法。

    公开(公告)号:EP0206311A2

    公开(公告)日:1986-12-30

    申请号:EP86108576

    申请日:1986-06-24

    Applicant: HOECHST AG

    CPC classification number: C23F11/149 C23F11/141 C23F11/147

    Abstract: Verwendung der Verbindungen der Formel R1 C12-C26-Alkyl oder C12-C26-Alkenyl, n eine Zahl von 0 bis 5, C1-C3-Alkyl, R3 C1-C3-Alkyl oder eine Gruppe der Formel -(C2H4O)xH, x eine Zahl von 1 bis 3, A ein Anion, R9 eine Gruppe der Formel R1'-(OCH2CH2)n-, C8-C18-Alkylaryl oder Aryl-C8-C18-alkyl, R1' C14-C22-Alkyl oder C14-C22-Alkenyl, n eine Zahl von 0 bis 5 und die Reste R10 gleich sind und C1-C4-Alkyl oder C1-C4-Hydroxialkyl bedeuten, als Korrosionsschutzmittel für metallische Werkstoffe in wässrigen Medien.

    Abstract translation: R1 C12-C26烷基或C12-C26链烯基,n的化合物的用途是一个从0到5, C1-C3烷基,R3 C1-C3烷基或下式基团的 - (C2H4O)XH,x是一个从1到3,<( - )>是阴离子,R 9为下式基团R1“的 - (OCH 2 CH 2)N - ,C8-C18烷基芳基,或芳基 - 的C8-C18烷基, R1“C14-C22烷基或C14-C22链烯基,n是从0到5的数和基团R 10是相同的并且是C1-C4烷基或C1-C4羟烷基的意思是,作为腐蚀抑制剂金属材料在含水介质中。

    2.
    发明专利
    未知

    公开(公告)号:DE59009764D1

    公开(公告)日:1995-11-16

    申请号:DE59009764

    申请日:1990-07-31

    Applicant: HOECHST AG

    Abstract: Switching and display elements based on ferroelectric liquid-crystals often exhibit a pronounced optical hysteresis which results in the appearance of so-called ghost images. This phenomenon can be markedly reduced or even suppressed if at least one of the two orienting layers are in direct contact with the electrodes and is composed of an electrically conductive polymer of the formula (I): (I) in which R1, R2=independently of each other, H, or straight-chain or branched alkyl or alkoxy containing 1-16 carbon atoms, or halogen, X=S, NH, Y-=BF4-, PF6-, PO43-, AsF6-, SbCl6-, SO42-, HSO4-, alkyl-SO3-, perfluoroalkyl-SO3-, aryl-SO3, F- or Cl-, and n is an integer from 4 to 100 and m is an integer from 1 to 30.

    6.
    发明专利
    未知

    公开(公告)号:DE3679597D1

    公开(公告)日:1991-07-11

    申请号:DE3679597

    申请日:1986-06-24

    Applicant: HOECHST AG

    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.

    7.
    发明专利
    未知

    公开(公告)号:DE3925971A1

    公开(公告)日:1991-02-07

    申请号:DE3925971

    申请日:1989-08-05

    Applicant: HOECHST AG

    Abstract: The novel liquid crystalline mixtures, which additionally contain an optically active compound as a dopant in the case of ferroelectric behaviour are based on at least 2 components of the general formula (I) and at least one carboxylic ester of the general formula (XI) or (XII) in which x is an integer of from 2 to 14 and n is an integer of from 6 to 14 in which a and b independently of one another may denote an integer of from 2 to 14 and -X- may denote an or an -O- group; in which A denotes, for example, pyrimidine-2,5-diyl, -Y- denotes, for example, -O- or -S-, -M- denotes, for example, -O- or -CH2-, -R denotes, for example, CH3 and c, d and e denote, for example, integers such as 2, 3 or 4. The mixtures, which may also contain further components, have advantageous properties for use in electrooptical display elements, such as low melting points and low crystallisation temperatures.

    8.
    发明专利
    未知

    公开(公告)号:DE3907601A1

    公开(公告)日:1990-09-13

    申请号:DE3907601

    申请日:1989-03-09

    Applicant: HOECHST AG

    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 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 , R , R = H or alkyl (R may also be alkenyl) which may also be substituted [R , R 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 , -A , -A = aromatic, heterocyclic or aliphatic ring system; -M ,- M = -CO-O, -O-CO, -CH2CH2, -CH=CH, -CH2O, -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.

Patent Agency Ranking