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    Production of Maleic Anhydride and Maleic Acid.
    21.
    发明专利
    Production of Maleic Anhydride and Maleic Acid. 未知

    公开(公告)号：GB1154148A

    公开(公告)日：1969-06-04

    申请号：GB4487466

    申请日：1966-10-07

    Applicant: BASF AG

    Inventor： FRIEDRICHSEN WILHELM ,  POEHLER GUENTER ,  GOEHRE OTTO

    IPC: B01J27/198 ,  C07C51/215 ,  C07C51/25

    Abstract: 1,154,148. Oxidation catalysts. BADISCHE ANILIN-& SODA-FABRIK A.G. 7 Oct., 1966 [9 Oct., 1965], No. 44874/66. Heading B1E. [Also in Division C2] A catalyst composition comprises 1-30% V 2 O 5 , 0-25% WO 3 , 5-70% P 2 O 5 , 4-90%. of a Cu, Ag, Cr, Mn, Fe, Co or Ni oxide and 0-90% of an inert carrier material, by weight. Preferably the ratio of P 2 O 5 to V 2 O 5 in the catalyst is more than 2:1 and the catalyst has an internal surface area of 1-100 sq. m/g. The catalysts may be prepared by conventional methods and may be used in the oxidation of olefinically unsaturated aliphatic hydrocarbons to anhydrides and acids.

    Production of polyimides
    22.
    发明专利
    Production of polyimides 未知

    公开(公告)号：GB1069760A

    公开(公告)日：1967-05-24

    申请号：GB3587964

    申请日：1964-09-02

    Applicant: BASF AG

    Inventor： SUTER HUBERT ,  POEHLER GUENTER ,  BRUNNMUELLER FRIEDRICH

    IPC: C08G73/10 ,  C09D5/25

    Abstract: Polyimides are prepared by reacting 1 mole of 3,6-endoethyleno - 1,2,4,5 - cyclohexane tetracarboxylic dianhydride with 1.5 to 2.5 moles of aliphatic and/or aromatic diamines, e.g. propylene, hexato nona-methylene, on m- or pphenylene diamine, toluidine or anisidine. Reaction may be effected in the presence of an inert gas, e.g. nitrogen or carbon dioxide, or solvent, e.g. xylenol or alpha-chloronaphthalene. The products may be used for the production of fibres, coatings or building materials, e.g. bricks or tiles.

    Improvements in the separation of liquid mixtures into their components
    24.
    发明专利
    Improvements in the separation of liquid mixtures into their components 未知

    公开(公告)号：GB900457A

    公开(公告)日：1962-07-04

    申请号：GB4199358

    申请日：1958-12-30

    Applicant: BASF AG

    Inventor： POEHLER GUENTER ,  GIEHNE HELLMUT ,  WEGERICH ANTON ,  GOEHRE OTTO

    IPC: B01D1/06 ,  B01D3/14 ,  B01D3/32

    Abstract: A liquid mixture, which contains material of low volatility, is separated into fractions by introducing it through pipe 1 into distillation column 3 the base of which is connected, by pipes 7 and 9, to a tubular evaporator 8; the base of the column and/or the tubular evaporator being also connected to a film-evaporator 12. Non-volatile material is withdrawn from the film-evaporator via pipe 13; and the volatile fraction is removed from the head of the column via dephlegmator 6 and pipe 10. In the embodiment shown, the vapour withdrawn from the film-evaporator via pipe 14 is condensed; and the condensate is introduced via pipe 22 into the column with fresh feed. The film-evaporator may be maintained at low pressure by a vacuum pump connected to pipe 19. The level of the liquid in the base of the column is maintained constant by valve 15. The operation is preferably conducted so that the bottoms product contains 40 to 60% of the low-volatile material. The process is suitable for fractionating the crude products of organic syntheses; and the heat of reaction may be used to preheat in heat-exchanger 2 the feed to the column. There are five examples, which relate to the production of cyclohexanol, dicyclohexylamine, dichlorbutane, adiponitrile, and beta-naphthol.

    Improvements in the production of cyclohexanone
    27.
    发明专利
    Improvements in the production of cyclohexanone 未知

    公开(公告)号：GB848615A

    公开(公告)日：1960-09-21

    申请号：GB3665458

    申请日：1958-11-14

    Applicant: BASF AG

    Inventor： POEHLER GUENTER

    IPC: C07C45/00

    Abstract: In a process for the production of cyclohexanone by dehydrogenation of cyclohexanol which has been obtained by reacting aniline or nitrobenzene with steam and hydrogen in the presence of a hydrogenation-catalyst, the liquidproduct, containing cyclohexanol and cyclohexylamine, from the aniline (or nitrobenzene) converter is separated from ammoniacal water and is then submitted to catalytic dehydrogenation in the presence of steam, this reaction being effected in two or more stages of increasing temperature up to at least 240 DEG C. and with separation of gaseous constituents and ammon iacal water between each stage, whereby cyclohexylamine is hydrolysed to cyclohexanone. In a example aniline vapour with the same weight of steam is passed with hydrogen at 200 DEG C. over a nickel-on-pumice catalyst. The effluent from the reactor is passed through a condenser into a separator, maintained at 70 DEG C., in which the gaseous constituents are separated. The ammoniacal layer is separated from the oily layer of the liquid product. This oily layer, which comprises cyclohexanol, cyclohexylamine and dicyclohexylamine, is passed with an equal weight of steam over a copper-on-silica catalyst maintained at 240 DEG C. The effluent from the second reactor is passed through a condenser to a gas-separator. The oily layer from the separator is then passed with steam over a copper-on-silica catalyst maintained at 270 DEG C. The effluent from this last reactor is passed through a condenser to a gas-separator; and the oily layer from the latter is distilled to separate cyclohexanone. The chief by-product is cyclohexanol.

    Dehydrogenation of cycloalkanols
    30.
    发明专利
    Dehydrogenation of cycloalkanols 未知

    公开(公告)号：GB1061447A

    公开(公告)日：1967-03-15

    申请号：GB4969663

    申请日：1963-12-17

    Applicant: BASF AG

    Inventor： SPERBER HEINRICH ,  POEHLER GUENTER ,  GOEHRE OTTO

    IPC: B01J21/00 ,  B01J23/06 ,  C07C45/00

    Abstract: The gas phase dehydrogenation of cycloalkanols to cycloalkanones is conducted at elevated temperature in presence of a catalyst consisting of at least 80% of ZnO which has been obtained by precipitation from a Zn salt with a basic precipitant, and drying and annealing the ZnO, which has a surface of 5-20 m.2/g. The production of cyclohexanone from cyclohexanol is exemplified; other specified starting materials are 4-methylcyclohexanol, cyclooctanol and cyclododecanol.ALSO:ZnO, intended for use as a dehydrogenation catalyst, is prepared by precipitation from a Zn salt with a basic precipitant, dried and annealed to obtain a surface of 5-20 m2/g. The precipitate may be slowly heated to 400 DEG C. and annealed at between 400 DEG and 600 DEG C. until the desired surface is obtained. An after-treatment with H2 at 300-500 DEG is optional.ALSO:A dehydrogenation catalyst comprises ZnO which has been prepared by precipitation from a Zn salt with a basic precipitant, dried and annealed to obtain a surface of 5-20 m2/g. Ingredients which may be present in an amount of up to 20% are: pumice or other silicates, Cu compounds, alkali or alkaline earth metal salts of mineral acids and rare earth compounds; the Cu compounds may be e.g. oxide, hydroxide, carbonate or nitrate. The ZnO is preferably annealed at 400-600 DEG C. and may be treated with H2 at 300-500 DEG before use. A binding agent such as starch, graphite or stearic acid may be used in making the catalyst.

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