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    1.
    发明专利
    未知

    公开(公告)号：DE1443535A1

    公开(公告)日：1968-10-24

    申请号：DE1443535

    申请日：1964-08-12

    Applicant: BASF AG

    Inventor： HUGO KROEPER DR ,  HANS-MARTIN WEITZ DR ,  ROLF PLATZ DR ,  KARL SCHLOEMER DR

    IPC: C07C67/04 ,  C07C69/54

    Abstract: Tertiary alkyl acrylates or methacrylates of the formula wherein R1 denotes an H atom or the -CH3 group and the R2 radicals which may be the same or different denote an alkyl group having from 1 to 4 C atoms, are prepared by reacting acrylic or methacrylic acid with a tertiary olefin of formula where R2 has the above meaning and R3 denotes an alkylidene group with 1 to 4 C atoms, in the presence of an active bleaching earth containing from 0.005 to 0.1 milliequivalents per gram of free titratable acid at atmospheric or superatmospheric pressure and at a temperature of from 0 DEG C. to 40 DEG C. A suitable bleaching earth comprises 50 to 70% of SiO2, 10 to 30% of Al2O3, 2 to 8% of Fe2O3, 1 to 9% of MgO and small amounts of the oxides of the other alkaline earth metals (all percentages are by weight). Examples describe the production of tertiary-butyl acrylate.

    2.
    发明专利
    未知

    公开(公告)号：DE1418047A1

    公开(公告)日：1968-10-10

    申请号：DE1418047

    申请日：1958-02-15

    Applicant: BASF AG

    Inventor： HUGO KROEPER DR ,  ROLF PLATZ DR

    IPC: B01J8/26 ,  B01J8/28 ,  C07C4/06 ,  C07C5/32 ,  C07C5/333 ,  C07C5/367 ,  C10G11/18

    Abstract: In the catalytic dehydrogenation of hydrocarbons such as butanes, butenes, pentanes, pentenes, cyclohexane or petroleum naptha, using a fluidised bed of catalyst with simultaneous regeneration with an oxygen-containing gas, the regeneration bed is in communication only at its upper end with the cracking bed and, when the beds are side by side, ends a sufficient distance below the level of the cracking bed that sufficient exchange of catalyst occurs between the beds and the constitution and speed of the regenerating gas are regulated so that the oxygen is practically used up in the regeneration bed. The regeneration bed may be one or more tubes inside the cracking bed as shown in Fig. 1, or one or more coaxial annular spaces within the cracking bed. Alternatively an arrangement as shown in Fig. 3 may be used wherein the regeneration bed is wholly below the cracking bed, oxygen being introduced by pipe 14 and hydrocarbons by pipe 15 to distribution grid 16. Examples refer to the dehydrogenation of butylene or butane-butylene mixtures to butadiene of cyclohexane to benzene, of ethane to ethylene, of propane to propylene, of methyl butenes or methyl butene-isopentane mixtures to isoprene, of isobutane to isobutylene, and the cracking of a 40-80 DEG C. boiling range naphtha to ethylene, propylene, butylenes, pentylenes and light saturated hydrocarbons. A diluent gas or vapour may be added to the cracking or dehydrogenation reaction.

    4.
    发明专利
    未知

    公开(公告)号：DE1910473A1

    公开(公告)日：1970-09-17

    申请号：DE1910473

    申请日：1969-03-01

    Applicant: BASF AG

    Inventor： KARL SCHLOEMER DR ,  OTTO NAGEL DR-ING ,  ROLF PLATZ DR ,  HANS-MARTIN WEITZ DR

    IPC: C07C7/148 ,  C07C7/171 ,  C07C7/02

    Abstract: 1290072 Recovering isobutylene and butadiene BADISCHE ANILIN- & SODA-FABRIK AG 27 Feb 1970 [1 March 1969] 9508/70 Heading C5E Isobutylene and butadiene are recovered from C 4 -hydrocarbon mixture containing inter alia isobutylene and 0À01-60 wt. per cent butadiene by the following steps:- (a) contact at 25-35‹ C. with an absorption mixture containing 2-25 wt. per cent tert.- butanol, 30-45 wt. per cent sulphuric acid and 30-55 wt. per cent water, whereby isobutylene is hydrated to form more tert.-butanol, most of the butadiene being recovered as raffinate gas; (b) distilling the resulting mixture to obtain an azeotrope of tert.-butanol with about 12% of water; (c) fractionating the azeotrope to obtain a pure fraction comprising not more than 0À03 wt. per cent of impurities; and (d) dehydrating tert.-butanol contained in said pure fraction by contact with active alumina.

    6.
    发明专利
    未知

    公开(公告)号：DE1923446A1

    公开(公告)日：1970-11-12

    申请号：DE1923446

    申请日：1969-05-08

    Applicant: BASF AG

    Inventor： ROLF PLATZ DR ,  WERNER FUCHS DR ,  OTTO NAGEL DR-ING

    IPC: B01F3/04 ,  B01F3/08 ,  B01F5/02 ,  C02F3/12 ,  C02F3/22 ,  C12M1/08 ,  C12B1/14

    Abstract: 1303163 Aerating liquids BADISCHE ANILIN- & SODA-FABRIK AG 7 May 1970 [8 May 1969] 22051/70 Heading B1C Liquid is aerated by means of an ejector which dips into the liquid. The ejector has a central tube 3 through which liquid flows, e.g. from a pump, and induces a flow of air through a surrounding tube 4. The air and liquid pass through a mixing tube 5 completely immersed in the liquid, inducing through the tube 5 the circulation of the liquid in the container. The liquid may be a lake or river, or be in a container 1 as shown. The process may be used to speed up fermentations, or to aerate sewage. The liquid flows through the tube 3 at between 5 and 100 m/sec., the diameter of the mixing tube 5 is 2-20 times the diameter of the tube 3, and the length of the mixing tube 5 is 2-30 times the diameter of the mixing tube.

    9.
    发明专利
    未知

    公开(公告)号：DE1443508A1

    公开(公告)日：1968-12-05

    申请号：DEB0075330

    申请日：1964-02-07

    Applicant: BASF AG

    Inventor： HANS-MARTIN WEITZ DR ,  HANS FRIZ DR ,  ROLF PLATZ DR

    IPC: C07C20060101

    Abstract: Acrylonitrile and methacrylonitrile are separated from mixtures, obtained by the ammonia oxidation of propylene or isobutylene, by extractive countercurrent methods wherein the extractive solvent is a 5- or 6-ring membered lactam, N-substituted lactam or lactone, an acyclic or cyclic sulphone or sulphoxide, an N-alkylcarboxylic amide, an N,N-dialkylcarboxylic acmide or propylene carbonate. The two phase flowing in counter current comprise the reaction mixture and the solvent and may be liquid/liquid phases or gas/liquid phases respectively. The process is illustrated by reference to flow drawings (not shown) representing a gas/liquid extraction and extractive distillation. A liquid/liquid extraction using an auxiliary solvent is also described. Examples relate to the use of N-methylpyrrolidone, propylene carbonate, 3 - methyltetramethylene sulphone, butyrolactone, dimethyl sulphoxide, N - q -hydroxyethyl pyrrolidone, and dimethyl-formamide as extractive solvents.

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