公开(公告)号：CA2057640A1

公开(公告)日：1992-06-15

申请号：CA2057640

申请日：1991-12-13

Applicant: HOECHST AG

Inventor： FRUTH ANTON ,  STRAU JULIUS ,  STUEHLER HERBERT

IPC: B01J25/02 ,  C07B61/00 ,  C07C209/70 ,  C07C211/03 ,  C07C209/68

Abstract: HOE 90/F 917 Process for the preparation of saturated primary fatty amines by hydrogenation of the corresponding unsaturated primary fatty mines In the novel process, the hydrogenation of the double bonds in an unsaturated primary fatty amine is achieved by reaction of the unsaturated primary fatty amine with hydrogen at a temperature of 80 to 160.degree.C and a pressure of 1 to 40 bar in the liquid phase and in the presence of 0.1 to 10% by weight of a nickel catalyst or cobalt catalyst. If the fatty amine to be hydrogenated contains ammonia, the latter is substantially removed before the hydrogenation process.

公开(公告)号：CA2057637A1

公开(公告)日：1992-06-15

申请号：CA2057637

申请日：1991-12-13

Applicant: HOECHST AG

Inventor： FRUTH ANTON ,  STRAU JULIUS ,  STUEHLER HERBERT

IPC: B01J25/02 ,  C07B61/00 ,  C07C209/48 ,  C07C209/70 ,  C07C211/03

Abstract: Process for the preparation of saturated primary fatty amines by hydrogenation of unsaturated fatty acid nitriles According to the new process, the hydrogenation of unsaturated fatty acid nitriles or mixtures of unsatu- rated and saturated fatty acid nitriles is carried out in the liquid phase in the presence of nickel catalysts or cobalt catalysts. In a first reaction step the fatty acid nitrile, in the presence of ammonia, is treated with hydrogenation hydrogen until all the nitrile groups are hydrogenated to predominantly primary amino groups. After the ammonia content in the reaction mixture obtained from the first step has been adjusted to a value of at most 0.1 mol of ammonia per mole of fatty acid nitrile used, a second reaction step is used to hydrogenate the double bonds present to saturated bonds. The desired primary and saturated fatty amine is obtained in a very high yield and has an iodine number of at most 5.