公开(公告)号：US3829490A

公开(公告)日：1974-08-13

申请号：US17224671

申请日：1971-08-16

申请人： MONSANTO CO

发明人： MUELLER W ,  CAMPBELL C

IPC分类号： C07C211/18 ,  C07C67/00 ,  C07C209/00 ,  C07C87/38

CPC分类号： C07C211/18

摘要： THE ISOMER RATIO IN A NON-EQUILIBRATED MIXTURE OF THE CIS AND TRANS ISOMERS OF A C6-C14 CYCLOALKYLANEBIS(METHYLAMINE9 SUCH AS 1,4-CYCLOHEXNEBIS(METHYLAMINE) CAN BE CONVENIENTLY ALTERED BY CONTACTING THE MIXTURE AT 175*290*C. WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST AND AMMONIA. A HIGH YEILD OF ONE OF SUCH ISOMERS CAN BE OBTAINED BY SIMILARLY CONTACTING A MIXTURE OF SUCH ISOMERS WHEREIN THE RATIO OF SAID ONE ISOMER TO THE OTHER OF SAID ISOMERS IS LOWER THAN THE CORRESPONDING EQUILBRIUM RATIO OF SUCH ISOMERS, SELECTIVELY SEPARATING SAID ONE ISOMER FROM THE CONTACTED MIXTURE AND RECYCLING THE RESIDUAL MIXTURE FOR MORE OF SUCH CONTACTING.

公开(公告)号：US3830712A

公开(公告)日：1974-08-20

申请号：US28437372

申请日：1972-08-28

申请人： MONSANTO CO

发明人： CAMPBELL C ,  DANLY D ,  MUELLER W

IPC分类号： C07C67/00 ,  C07C253/00 ,  C07C255/04 ,  C25B3/10 ,  B01K3/06 ,  C07B29/06 ,  C07C121/26

CPC分类号： C25B3/105

摘要： IN A PROCESS FOR HYDRODIMERIZING AN OLEFINIC NITRILE, AMIDE OR ESTER BY ELECTROLYZING AN AQUEOUS SOLUTION OF THE OLEFINIC COMPOUND, AN ALKALI METAL SALT AND QUATERNARY AMMONIUM CATIONS, THE SELECTIVELY WITH WHICH THE HYDRODIMER IS PRODUCED IS SURPRISINGLY HIGH WHEN THE SOLUTION CONTAINS LESS THAN ABOUT 5% BY WEIGHT OF THE OLEFINIC COMPOUND, MORE THAN 5% BY WEIGHT OF THE ALKALI METAL SALT AND/OR ALKALI METAL CATIONS CONSTITUTING MORE THAN HALF OF THE TOTAL WEIGHT OF ALL CATIONS IN THE SOLUTION AND THE SOLUTION IS ELECTROLYZED IN CONTACT WITH A CATHODE CONSISTING ESSENTIALLY OF CADMIUM. EVEN IN A CELL IN WHICH THE ANODE IS IN CONTACT WITH THE SLUTION, FOULING OF SUCH A CATHODE PROCEEDS VERY SLOWLY AND THE HYDRODIMER SELECTIVITY REMAINS HIGH FOR AN EXCEPTIONALLY LONG TIME WHEN THE CATHODIC SURFACE HAS A CENTERLINE AVERAGE NOT GREATER THAN ABOUT 90 MICROINCHES.