公开(公告)号：MX3601E

公开(公告)日：1981-03-30

申请号：MX17076

申请日：1976-04-13

Applicant: DEGUSSA

Inventor： FRIEDRICH HEINZ ,  BESCHKE HELMUT ,  MULLER KLAUS-PETER ,  SCHREYER GERD

IPC: C07D213/81 ,  C07D213/82

Abstract: Nicotinamide is recovered from the reaction mixture resulting from the hydrolysis of nicotinonitrile at elevated temperature by converting the nicotinamide into a melt while removing the solvent.

公开(公告)号：CA1097367A

公开(公告)日：1981-03-10

申请号：CA264296

申请日：1976-10-27

Applicant: BAYER AG ,  DEGUSSA

Inventor： PRESCHER GUENTER ,  SCHREYER GERD ,  WEIBERG OTTO ,  WIRTHWEIN ROLF ,  WALDMANN HELMUT ,  SEIFERT HERMANN ,  SCHWERDTEL WULF ,  SWODENK WOLFGANG

IPC: C07C409/24 ,  C07D301/14 ,  C07D303/04

Abstract: PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE Process for continuous production of propylene oxide (Fig. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5); the perpropionic acid in the benzene solution is reacted with propylene (21) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (27, 29, 34, 37), and the latter two are recyled. In the benzene extraction (5), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. The aqueous raffinate can be divided into a stream which is recycled to the propionic acid reactor (1), and a second stream which can be distilled to remove water with the concentrate being recycled to the propionic acid reactor. (1) Le A 17,343/6142 PV -1-

公开(公告)号：DD146047A5

公开(公告)日：1981-01-21

申请号：DD21572079

申请日：1979-09-21

Applicant: DEGUSSA

Inventor： BACH GERHARD ,  GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD ,  HILLENBRAND HORST

IPC: B01D53/68 ,  C01C3/00 ,  C07D251/28

Abstract: The residual gases obtained in the production of cyanuric chloride having a pressure of 1-5 bar (absolute) preferably 1-4 bar, are worked up by leading them into the lower portion of a column, reacted in the column with at least the equivalent amount of hydrogen cyanide to form cyanogen chloride and led in countercurrent flow to the water charged to the upper portion of the column whereupon the aqueous solution of cyanogen chloride formed is withdrawn from the lower portion of the column and preferably is returned into the production portion of the plant for recovery of the cyanogen chloride while the purified waste gas of the column leaves in the upper portion of the column.

公开(公告)号：RO67635A

公开(公告)日：1980-04-15

申请号：RO7210572

申请日：1972-09-01

Applicant: DEGUSSA

Inventor： HENSEL JORG ,  SCHAEFER HANS ,  SCHREYER GERD

IPC: C07C20060101 ,  C07C231/06 ,  C07C67/00 ,  C07C231/00 ,  C07C231/10 ,  C07C233/03 ,  C07C103/127

Abstract: N-alkyl formamides or the corresponding N-cycloalkyl or N-aralkyl formamaides are prepared by reacting olefins, cycloolefins or aralkenes with hydrogen cyanide in the Ritter reaction using about 2.5 moles of acid per mole of olefin at a temperature of 30 DEG to 70 DEG C. and the unneutralized acid reaction mixture is extracted with acid stable polar solvents and the extract is worked up in conventional manner.

公开(公告)号：CA1074529A

公开(公告)日：1980-04-01

申请号：CA252040

申请日：1976-05-07

Applicant: DEGUSSA

Inventor： HEIMBERGER WERNER ,  SCHREYER GERD

IPC: C01C3/00

Abstract: The present invention provides in a process for producing cyanogen chloride by reacting hydrogen cyanide with hydrogen chloride or hydrochloric acid and hydrogen peroxide in an aqueous medium in the presence of cupric and ferric ions, the improvement in which the reaction is carried out under superatmospheric pressure and that cyanogen chloride is recovered separately from oxygen and nitrogen.

公开(公告)号：CA1067061A

公开(公告)日：1979-11-27

申请号：CA239905

申请日：1975-11-18

Applicant: DEGUSSA

Inventor： FRIEDRICH HEINZ ,  HEIM WOLFGANG ,  KLEEMANN AXEL ,  KOLB HEINZ ,  SCHREYER GERD

IPC: C07D301/02 ,  B01J8/18 ,  B01J38/00 ,  C01G31/00 ,  C01G33/00 ,  C01G41/00 ,  C07B61/00 ,  C07C27/00 ,  C07C29/03 ,  C07C31/18 ,  C07C67/00 ,  C07D301/12 ,  C07D301/32 ,  C07D303/04 ,  B01J23/16 ,  B01J37/00

Abstract: The present invention provides a process for the separation of a catalyst employed in the epoxidation or hydroxylation of an olefinic compound with a peroxy compound in a reactor, distilling off the epoxidized or hydroxylated product and separation of the catalyst from the distillation residue containing said catalyst and said high boiling organic compounds, said catalyst being a compound of a transition metal, the improvement comprising introducing the distillation residue into a bed of fluidized inert solid particles, burning the organic compounds of said distillation residue with an oxygen containing gas while in contact with said fluidized particles and separating fluidized particles containing a compound of the metal employed in the catalyst from the waste gas of said burning.

公开(公告)号：CA1056383A

公开(公告)日：1979-06-12

申请号：CA250346

申请日：1976-04-15

Applicant: DEGUSSA

Inventor： BESCHKE HELMUT ,  FRIEDRICH HEINZ ,  MULLER KLAUS-PETER ,  SCHREYER GERD

IPC: C07D213/82 ,  C07D213/81

Abstract: A process for producing nicotinic amide from nicotinic nitrile, comprises hydrolyzing the nicotinic nitrile with an alkali hydroxide at a temperature within the range of from 110 to 250.degree.C.

公开(公告)号：CH611277A5

公开(公告)日：1979-05-31

申请号：CH554275

申请日：1975-04-30

Applicant: DEGUSSA

Inventor： LUESSLING THEODOR ,  MUELLER KLAUS-PETER ,  SCHREYER GERD ,  THEISSEN FERDINAND

IPC: C07C319/28 ,  B01D9/02 ,  C01D7/00 ,  C01D7/10 ,  C07C20060101 ,  C07C67/00 ,  C07C227/04 ,  C07C255/04 ,  C07C313/00 ,  C07C319/20 ,  C07C323/58 ,  C07C149/247

Abstract: Methionine and potassium are recovered from the recycling solution of the potassium carbonate-methionine process by concentrating the mother liquor after the methionine precipitation and with cooling carbonating the mother liquor.

公开(公告)号：RO66454A

公开(公告)日：1979-01-15

申请号：RO8085074

申请日：1974-12-18

Applicant: DEGUSSA

Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHMITT HERMANN ,  SCHREYER GERD

IPC: C07D251/28 ,  B01D15/00 ,  B01D53/02 ,  B01D53/28 ,  B01J19/00 ,  B01J20/08 ,  C01C3/00 ,  C01C3/02

Abstract: Cyanogen chloride is purified and the service life of activated carbon is increased in the subsequent trimerization of the cyanogen chloride to cyanuric chloride by process comprising reacting hydrogen cyanide with chlorine, in a given case in the presence of cyanogen chloride produced in the presence of water, which in a given case contains chlorine. The improvement comprises passing the cyanogen chloride over granular gamma aluminum oxide with an alkali metal or in a given case an alkaline earth metal content of 0 to 3 weight % at 20 DEG -100 DEG C., preferably 30 DEG -60 DEG C.

公开(公告)号：CH607985A5

公开(公告)日：1978-12-15

申请号：CH1711174

申请日：1974-12-20

Applicant: DEGUSSA

Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD

IPC: C07D251/28 ,  B01D15/00 ,  B01D53/02 ,  B01D53/26 ,  B01J19/00 ,  B01J20/18 ,  C01C3/00

Abstract: Cyanogen chloride is purified and the service life of activated carbon is increased in the subsequent trimerization of the cyanogen chloride to cyanuric chloride by process comprising reacting hydrogen cyanide with chlorine, in a given case in the presence of cyanogen chloride produced in the presence of water, which in a given case contains chlorine. The improvement comprises passing the cyanogen chloride over granular commercial sodium aluminum silicate or a molecular sieve of the mordenite type, at 20 DEG -100 DEG C., preferably 30 DEG -60 DEG C.