C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 253/10 (2006.01) B01J 31/18 (2006.01) C07F 9/145 (2006.01) C07F 9/6574 (2006.01) C07C 255/07 (2006.01)
Patent
CA 2291443
Improved liquid phase process useful in the hydrocyanation of diolefinic compounds to produce nonconjugated acyclic nitriles and to the liquid phase process of isomerization of the nitriles to, among other things, 3- and/or 4- monoalkene linear nitriles. The improvement involves conducting the process in the presence of zero-valent nickel and a multidentate phosphite ligand. Novel multidentate phosphite ligands and catalyst precursor compositions made therefrom are also disclosed.
L'invention concerne un procédé perfectionné en phase liquide, utile dans la cyanhydratation de composés dioléfiniques et permettant de produire des nitriles acycliques non conjuguées. Elle concerne également un procédé en phase liquide d'isomérisation des nitriles pour obtenir, entre autres choses, des nitriles linéaires 3- et/ou 4 monoalcéniques. L'amélioration consiste à conduire le procédé en présence d'un nickel de valence zéro et d'un ligand phosphite polydenté. L'invention concerne encore des nouveaux ligands phosphite polydentés ainsi que des compositions de précurseurs de catalyseurs contenant ces ligands.
Foo Thomas
Garner James Michael
Tam Wilson
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
Invista Technologies S.a.r.l.
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