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公开(公告)号：BR8104561A
公开(公告)日：1982-04-06
申请号：BR8104561
申请日：1981-07-16
Applicant: HOECHST AG
Abstract: In a device for gassing liquids or suspensions, a first guide means is located at a short distance, opposite the orifice of a jet pipe. This guide means is supported via a gas inlet on a second guide means. The first guide means provided can be a cone and the second guide means can be a truncated cone which merges into a disc-shaped annular zone.
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公开(公告)号：DK317981A
公开(公告)日：1982-01-18
申请号：DK317981
申请日：1981-07-16
Applicant: HOECHST AG
Abstract: In a device for gassing liquids or suspensions, a first guide means is located at a short distance, opposite the orifice of a jet pipe. This guide means is supported via a gas inlet on a second guide means. The first guide means provided can be a cone and the second guide means can be a truncated cone which merges into a disc-shaped annular zone.
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公开(公告)号：BR7900799A
公开(公告)日：1979-09-04
申请号：BR7900799
申请日：1979-02-09
Applicant: HOECHST AG
Inventor： BAUER A , LEISTNER G , SELL G , MUELLER G
Abstract: In a process for the biological purification of waste water by mixing a sludge-water mixture and air in an activation chamber charged continuously with waste water, activated sludge and air and from which an equivalent quantity of sludge-water mixture is discharged, the sludge-water mixture is guided along with the air in the activation chamber so as to define at least one loop shape motion. In a further embodiment of the process that part of the sludge-water mixture that does not continue its loop shape course is submitted to a biological after-reaction, preferably occurring in the activation chamber, while avoiding backmixing with the mixture in loop shape motion.
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公开(公告)号：DK153379A
公开(公告)日：1979-10-15
申请号：DK153379
申请日：1979-04-11
Applicant: HOECHST AG
IPC: C07C231/00 , C07B20060101 , C07C20060101 , C07C67/00 , C07C231/08 , C07C233/91 , C07C
Abstract: The invention provides an improved process for the manufacture of N,N,N',N'-tetraacetylethylenediamine by acetylation of N,N'-diacetylethylenediamine with acetic anhydride, by using these two starting components in a weight ratio of from 1:1 to 1:10, stopping the acetylation before attaining the reaction equilibrium between N,N'-diacetylethylenediamine and N,N,N',N'-tetraacetylethylenediamine, preferably after having attained a conversion rate of from 20 to 70 mol % of tetraacetylethylenediamine, relative to diacetylethylenediamine, purifying the reaction mixture in order to remove the dyeing impurities, and recycling to the acetylation the purified, incompletely reacted components. Purification may be carried out by vacuum distillation or by means of an adsorbent, for example bleaching earth or active charcoal. Optionally, from 0.01 to 0.3 part by weight of ketene per part by weight of diacetylethylenediamine are added to the starting components. The process may be carried out batchwise or continuously, and it gives a practically colorless product with high yield (more than 97%).
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公开(公告)号：BR7900798A
公开(公告)日：1979-09-04
申请号：BR7900798
申请日：1979-02-09
Applicant: HOECHST AG
Inventor： BAUER A , MUELLER G , LEISTNER G , SELL G
Abstract: A device for the biological purification of waste water and for the degasification and clarification of a sludge-water mixture resulting from the biological purification includes a reactor container defining a chamber, means for introducing air, waste water and activated sludge into the chamber and means for discharging overflowing sludge-water mixture from the reactor container (activation chamber). A guide element is disposed within the chamber for maintaining a loop-shaped flow therein. A section of the wall of the reactor container is surrounded by a jacket, the lower end of which is joined to the periphery of the wall of the reactor container intermediate its ends and the upper end of which is substantially concentric to and spaced outwardly from the container; the lower portion of the jacket may have an inverted frusto-conical configuration; the jacket defines with the reactor container an annular space around the container, a portion of said space being adapted for settling of sludge out of the sludge-water mixture overflow. An inlet element and a discharge trough are arranged about the reactor container. The overflow from the reactor container discharges into the inlet element and passes via outlet means to the settling portion of said annular space, wherein sludge separates from effluent of the sludge-water mixture. Effluent from the mixture passes into the discharge trough for removal via another outlet means from the apparatus.
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Patent Agency Ranking
公开(公告)号：DK54079A
公开(公告)日：1979-08-12
申请号：DK54079
申请日：1979-02-09
Applicant: HOECHST AG
Inventor： LEISTNER G , MUELLER G , SELL G , BAUER A
Abstract: In a process for the biological purification of waste water by mixing a sludge-water mixture and air in an activation chamber charged continuously with waste water, activated sludge and air and from which an equivalent quantity of sludge-water mixture is discharged, the sludge-water mixture is guided along with the air in the activation chamber so as to define at least one loop shape motion. In a further embodiment of the process that part of the sludge-water mixture that does not continue its loop shape course is submitted to a biological after-reaction, preferably occurring in the activation chamber, while avoiding backmixing with the mixture in loop shape motion.
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公开(公告)号：DK53979A
公开(公告)日：1979-08-12
申请号：DK53979
申请日：1979-02-09
Applicant: HOECHST AG
Inventor： BAUER A , LEISTNER G , MUELLER G , SELL G
Abstract: A device for the biological purification of waste water and for the degasification and clarification of a sludge-water mixture resulting from the biological purification includes a reactor container defining a chamber, means for introducing air, waste water and activated sludge into the chamber and means for discharging overflowing sludge-water mixture from the reactor container (activation chamber). A guide element is disposed within the chamber for maintaining a loop-shaped flow therein. A section of the wall of the reactor container is surrounded by a jacket, the lower end of which is joined to the periphery of the wall of the reactor container intermediate its ends and the upper end of which is substantially concentric to and spaced outwardly from the container; the lower portion of the jacket may have an inverted frusto-conical configuration; the jacket defines with the reactor container an annular space around the container, a portion of said space being adapted for settling of sludge out of the sludge-water mixture overflow. An inlet element and a discharge trough are arranged about the reactor container. The overflow from the reactor container discharges into the inlet element and passes via outlet means to the settling portion of said annular space, wherein sludge separates from effluent of the sludge-water mixture. Effluent from the mixture passes into the discharge trough for removal via another outlet means from the apparatus.
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公开(公告)号：SE305211B
公开(公告)日：1968-10-21
申请号：SE869065
申请日：1965-06-30
Applicant: HOECHST AG
IPC: C07C311/54 , C07C143/833
Abstract: Novel benzenesulphonyl ureas of the formula and physiologically acceptable salts thereof, wherein R and R1 are each a hydrogen or halogen atom or an alkoxy, acyl, alkyl, haloalkyl, aminoalkyl, hydroxyalkyl, alkenyl, haloalkenyl, aminoalkenyl or hydroxyalkenyl group and R1 may also be an amino or acylamino group are made by (a) reacting an R,R1-substituted benzenesulphonyl isocyanate, or a corresponding carbamic acid ester or halide thiocarbamic ester or urea with aminonortricyclene or its salts; (b) reacting a benzenesulphonamide or its salt with nortricyclyl-isocyanate, a nortricyclyl-carbamic ester or halide, a nortricyclyl thiocarbamic ester or nortricyclyl-urea; (c) reacting a benzenesulphonic acid N-halo-amide with nortricyclyl formamide; (d) reacting a benzenesulphonyl halide with nortricyclyl urea isourea ether, isothiourea ether, guanidine or parabanic acid and hydrolysing the resulting isourea, isothiourea, guanidine or parabanic acid derivatives; (e) treating a corresponding benzenesulphonyl thiourea to replace the sulphur atom by an oxygen atom or (f) oxidizing corresponding benzenesulphinyl or benzenesulpheny ureas. Pharmaceutical preparations having hypoglycaemic properties comprise the above compounds in admixture or conjunction with a carrier, preferably in unit dosage form adapted to oral administration e.g. tablets.
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公开(公告)号：SE303859B
公开(公告)日：1968-09-09
申请号：SE368461
申请日：1961-04-07
Applicant: BEBO PLASTIK GMBH , HOECHST AG
Inventor： BORGARDT D , MUELLER G
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公开(公告)号：DK275080A
公开(公告)日：1980-12-28
申请号：DK275080
申请日：1980-06-26
Applicant: HOECHST AG
Inventor： BAUER A , LEISTNER G , MUELLER G , SELL G
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