公开(公告)号：DE1910795A1

公开(公告)日：1970-09-17

申请号：DE1910795

申请日：1969-03-04

Applicant: DEGUSSA

Inventor： HORST HILLENBRAND DR ,  ERICH LIEBETANZ DR ,  THEODOR LUESSLING DR ,  NOLL EWALD ,  SIMON KLAUS

IPC: C07C45/35 ,  C07C51/25 ,  C07C45/04

公开(公告)号：DE1927846A1

公开(公告)日：1970-12-03

申请号：DE1927846

申请日：1969-05-31

Applicant: DEGUSSA

Inventor： HEILOS JOHANNES ,  THEODOR LUESSLING DR ,  FERDINAND THEISSEN DR ,  WOLFGANG WEIGERT DR

IPC: C05C9/00 ,  C05C13/00 ,  C05C9/02

公开(公告)号：DE1911174A1

公开(公告)日：1970-09-24

申请号：DE1911174

申请日：1969-03-05

Applicant: DEGUSSA

Inventor： WOLFGANG WIEGERT DR ,  THEODOR LUESSLING DR ,  FERDINAND THEISSEN DR

IPC: C07C255/04 ,  C07C67/00 ,  C07C253/00 ,  C07C253/04 ,  C07C253/06 ,  C07C121/22

Abstract: 1,268,266. Malononitrile. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. 3 April, 1969 [5 April, 1968; 5 March, 1969], No. 17456/69. Heading C2C. Malononitrile is prepared in the absence of a catalyst by reacting a thorough mixture of gaseous acetonitrile and a gaseous cyanogen halide in a molar ratio greater than 1, and subsequently condensing the reaction mixture by chilling it with a coolant. The acetonitrile may contain up to 50% by weight of water, and when water is present, the reaction mixture is neutralized during condensation by the addition of an acid-binding agent. The coolant is preferably condensed malononitrile, water or anhydrous or aqueous acetonitrile. The reaction may be carried out in the presence of a gas inert to the reactants, e.g. nitrogen, carbon dioxide or, preferably, steam. In a preferred embodiment, the reaction mixture is condensed directly inside the reactor outlet.

公开(公告)号：DE1927847A1

公开(公告)日：1970-12-03

申请号：DE1927847

申请日：1969-05-31

Applicant: DEGUSSA

Inventor： FRIEDHELM GEIGER DR ,  THEODOR LUESSLING DR ,  FERDINAND THEISSEN DR ,  WOLFGANG WEIGERT DR

IPC: B01J21/00 ,  C01C3/00

Abstract: 1306528 Preparation of cyanogen DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 7 May 1970 [31 May 1969] 22032/70 Heading C1A Cyanogen is obtained by initially reacting HCN and C1 2 on a surface active catalyst (i.e. carbon) and then treating the gas mixture still containing HCN with 1À0 to 1À1 mols of Cl 2 per mol of HCN on a surface active catalyst at 195-800‹ C. for 10 seconds to 0À01 second. In a preferred embodiment the initial stage is carried out in two steps. In the first step the HCN and Cl 2 are reacted in a mole ratio of 1 : 1 or less and a residence time of greater than 10 -3 second and the residual amount of HCN required to use up the excess Cl 2 is directly introduced to the second reactor together with the gas mixture from the first reactor.

公开(公告)号：DE1919287A1

公开(公告)日：1970-10-29

申请号：DE1919287

申请日：1969-04-16

Applicant: DEGUSSA

Inventor： THEODOR LUESSLING DR ,  FERDINAND THEISSEN DR ,  WOLFGANG WEIGERT DR

IPC: C07B61/00 ,  B01J21/00 ,  C07C67/00 ,  C07C231/00 ,  C07C231/06 ,  C07C233/04 ,  C07C233/56 ,  C07C235/00 ,  E06B1/18 ,  C07C103/14

Abstract: 1303324 Oxamide DEUTSCHE GOLDUND SILBER - SCHEIDEANSTALT 16 April 1970 [16 April 1969] 18184/70 Heading C2C Oxalic acid diamide (i.e. oxamide) is prepared by hydrolysing cyanogen with, water in the presence of a hydrogen halide in an organic solvent which is not an alcohol or a carboxylic acid or anhydride. The hydrolysis is preferably carried out at a temperature of from 0‹ to 120‹ C. and at a pressure of from 1 to 50 atms. The solvent is preferably one in which water is highly soluble such as a sulphone, ketone or ether or a mixture thereof.