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    3.
    发明专利
    未知

    公开(公告)号：DE1643693A1

    公开(公告)日：1970-07-09

    申请号：DEB0095375

    申请日：1967-11-11

    Applicant: BASF AG

    Inventor： FRITZ BECK DR ,  ANDREAS BRUNOLD DIPL-ING ,  WALTER HIMMELE DR ,  JUERGEN HAUFE DR

    IPC: C25B3/29

    Abstract: Process for the electrochemical condensation of carboxylic acids by the electrolysis of monocarboxylic acids, half esters of dicarboxylic acids or aminocarboxylic acids in which current densities of more than 10 amp./dm.2 on vibrating electrode pairs are used, and in which the degree of neutralization of the carboxylic acids is kept below 10 percent, said process providing high space-time yields and a reaction product which can be worked up without difficulty.

    4.
    发明专利
    未知

    公开(公告)号：DE1915951A1

    公开(公告)日：1970-10-08

    申请号：DE1915951

    申请日：1969-03-28

    Applicant: BASF AG

    Inventor： FRITZ BECK DR ,  GOTTHARD CSIZI DR

    IPC: C25B11/04 ,  C25B11/08 ,  C25B11/10 ,  B01K3/02

    Abstract: 1303865 Electrodes BADISCHE ANILIN & SODA-FABRIK AG 25 March 1970 [28 March 1969] 14480/70 Heading C7B [Also in Divisions B2 C1] An electrode consists of an anodically stable material coated with an oxide mixture comprising at least one oxide of a platinum group metal and at least one oxide of silicon, germanium and tin. The electrodes are suitable as chloride or oxygen anodes in electrolytic cells. An electrolysis cell comprises an anode of titanium sheeting coated with a mixed oxide layer of ruthenium oxide and silicon dioxide and a cathode of platinum netting. The electrolyte comprises a sodium chloride/ hydrochloric acid solution of pH 3.

    6.
    发明专利
    未知

    公开(公告)号：DE1496737A1

    公开(公告)日：1969-07-03

    申请号：DE1496737

    申请日：1966-08-27

    Applicant: BASF AG

    Inventor： FRITZ BECK DR ,  HANS LEITNER DR

    IPC: C25B11/16

    Abstract: 1,189,183. Anodic deposition of lead dioxide. BADISCHE ANILIN- & SODA-FABRIK A. G. Aug. 25, 1967 [Aug. 27, 1966], No.39237/67. Heading C7B. Coatings of PbO 2 are applied to Ti, e.g. as netting for an anode in the electro-chemical hydrodimerization of acrylonitrile to adipodinitrile, by anodic deposition from aqueous electrolytes containing a Pb(II) salt, e. g. Pb(ClO 3 ) 2 or Pb(NO 3 ) 2 , with the corresponding acid HClO 3 or HNO 3 , in a process wherein (a) the Ti is pretreated with an aqueous acid solution containing F - ions, e.g. 10-100g/l as HF with or without NaF or KF, or NH 4 HF 2 with ammonium acetate, and/or (b) the electrolyte contains F - ions e.g. 0À1-2g/l. Electrolysis is preferably effected at 40-90‹ C. and current densities of 1-10 amps/sq.dm. The cathode may be a brass netting coated with lead. When pretreating with HF solution, the Ti is preferably immersed in a concentrated solution of NaF prior to electrolysis. The Ti may be initially treated with aqueous NaOH solution, then degreased in C 2 H 2 Cl 4 and pickled with concentrated HCl prior to the above treatment. It is stated that it is known to electro-deposit PbO 2 on Ta from an acid Pb(NO 3 ) 2 solution. Alkaline baths are known containing sodium plumbite or lead tartrate. Specification 1,145,539 is referred to.

    7.
    发明专利
    未知

    公开(公告)号：DE1518548A1

    公开(公告)日：1969-05-14

    申请号：DE1518548

    申请日：1965-04-14

    Applicant: BASF AG

    Inventor： HARALD GUTHKE DR ,  KARL WINTERSBERGER DR ,  FRITZ BECK DR ,  JOSEF FLOSS DR ,  HABERMANN WOLFGANG

    IPC: C25B3/29 ,  B01K1/00

    Abstract: 1,137,544. Electrolytic hydrodimerization of acrylonitrile. BADISCHE ANILIN- & SODA FABRIK A.G. 13 April, 1966 [14 April, 1965], No. 16133/66. Heading C2C. [Also in Division C7] Adiponitrile is produced electrolytically by hydrodimerizing acrylonitrile as catholyte in a cell wherein the anolyte and catholyte are separated by a solid polyelectrolyte which directly covers either or both of the opposed faces of the two electrodes, or joins together the anode and cathode, leaving no interspace between the electrode and polyelectrolyte, the or each covered electrode being permeable to the anolyte and/or catholyte. The catholyte or anloyte may contain a conducting salt solution or water; an acid and/or a base may be added to the anolyte. The polyelectrolyte may be a copolymer layer, e.g. of (dimethyl) styrene and divinylbenzene, phenyl-formaldehyde resins or vinyl chloride containing sulphonic or carboxylic or arsenic acid, phosphonium, ammonium, phosphine, hydroxyl or amino groups; or particles of inorganic ion exchanger, e.g. hydrated zirconium oxides, glauconite, zeolite (hydroxy) apatite, distributed in a binder, e.g. polystyrene, polybutadiene, polyisoprene or cement. The anode may be a porous sintered graphite tube surrounded first by the copolymer layer then by the cathode, e.g. of amalgamated silver netting, the catholyte being acrylonitrile and tetraethyl ammonium p-toluene-sulphonate solution, and the anolyte pure water. The anode may also be of a platinum group metal, lead, lead dioxide, sintered nickel, nickel coated with nickel sulphide or arsenide, or magnetite, and may be vibrated; the cathode may also be of lead, lead amalgams or alloys.

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