中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

78 records (took 0.017 seconds)

    71.
    发明专利
    未知

    公开(公告)号：DD153805A5

    公开(公告)日：1982-02-03

    申请号：DD22364480

    申请日：1980-09-01

    Applicant: DEGUSSA

    Inventor： BITTNER FRIEDRICH ,  VOIGT CARL ,  KLEINSCHMIT PETER

    IPC: C01C3/02

    Abstract: By introducing the reaction gas mixture of hydrocarbons and ammonia at increased velocity through an inlet tube with one or more openings in a customary reaction tube in the hydrocyanic acid-methane-ammonia (BMA) process the yield of HCN is increased considerably.

    72.
    发明专利
    未知

    公开(公告)号：DD147105A5

    公开(公告)日：1981-03-18

    申请号：DD21646579

    申请日：1979-10-25

    Applicant: DEGUSSA

    Inventor： HENTSCHEL KLAUS ,  BITTNER FRIEDRICH

    IPC: C07D251/34 ,  B01J10/02 ,  C07D251/30 ,  C07D251/38 ,  C07D251/40 ,  C07D251/70 ,  C07D251/28

    Abstract: Three substituents are introduced into cyanuric acid in the presence of an acid binding agent by working in a manner permitting high mixing and therefore high reaction velocities and permitting high throughputs in small tubular containers by introducing liquid cyanuric chloride through a nozzle in the upper portion of the mixing apparatus in countercurrent flow to upwardly flowing reactants (and acid binding agent) introduced from at least one lower nozzle above a breast shaped constriction in the lower, open portion of the apparatus. The process can be carried out at normal, reduced or elevated pressure.

    73.
    发明专利
    未知

    公开(公告)号：RO70804A

    公开(公告)日：1980-08-15

    申请号：RO8398774

    申请日：1974-11-20

    Applicant: DEGUSSA

    Inventor： BITTNER FRIEDRICH ,  HASCHKE HEINZ ,  SUCHSLAND HELMUT ,  SCHREYER GERD ,  SCHWARZE WERNER

    IPC: C07D251/28

    Abstract: There is provided a process for the production of a solution or suspension of cyanuric chloride in a water containing organic solvent wherein the liquid cyanuric chloride and the organic-aqueous solvent are mixed together while being agitated, the liquid cyanuric chloride at a temperature between its melting point and 200 DEG C. is led into the flowing organic-aqueous solvent with a velocity of Vcy (in kg per hour) wherein where P is the desired concentration of cyanuric chloride in the solution or suspension to be produced in weight %, PLM is the concentration of cyanuric chloride in the solvent used which also includes O, VLM is the velocity of the solvent added in kg/h, AND PLM, VLM and TLM, the temperature of the added solvent, are so selected that the expression does not exceed the boiling temperature in DEG C. of the solvent used and wherein Cp(LM) and Cp(Cy) signify the specific heat capacities in cal. x g 1 x ( DEG degree C) 1 of the solvent and cyanuric chloride respectively, whereupon in a given case within at most 3 minutes after bringing the cyanuric chloride and solvent into contact the flowing mixture is cooled to the desired storage temperature.

    A process for the production of ultra-finely divided oxides
    77.
    发明专利
    A process for the production of ultra-finely divided oxides 未知

    公开(公告)号：GB1121279A

    公开(公告)日：1968-07-24

    申请号：GB5616667

    申请日：1965-07-28

    Applicant: DEGUSSA

    Inventor： BITTNER FRIEDRICH ,  BRUNNER HELMUT ,  SCHUTTE DIETER ,  DIETHER JEAN ,  SCHMITZ FRANZ THEO

    IPC: C01B13/22 ,  C01B33/18

    Abstract: Finely divided metal or silicon oxides are prepared by the vapour phase hydrolytic reaction of volatile metal or silicon halides in a flame into which the halide is introduced in admixture with oxygen and a gas whose combustion is accompanied by the formation of water, in such proportions that the mixture contains enough oxygen for the complete combustion of the flammable gas whilst the amount of water formed is at least sufficient to hydrolyse the volatile halide, said flame burning in an enclosed reaction zone and being surrounded by a gas inert to the reactions in the flame. In the diagram, the mixture of gases is fed to a burner 11 and the flame 12 burns in a flame tube 13 in an atmosphere of nitrogen supplied by a feed pipe 16 via a gauze 15. The air may be supplied to the burner in two streams, primary air supplied direct and supporting air bearing the metal halide.

Patent Agency Ranking