Method to prepare nonylated diphenylamine using recycle and...

Details Method to prepare nonylated diphenylamine using recycle and... Method to prepare nonylated diphenylamine using recycle and...

C - Chemistry, Metallurgy

07

C

C07C 211/55 (2006.01) C07C 209/72 (2006.01) C10M 133/12 (2006.01)

Patent

CA 2616569

The present invention relates to a process for preparing nonylated diphenylamines which improves nonene usage by recycling and reusing stripped nonene from an earlier process. The process comprising consecutive recycle of recovered nonene is conducted at a sequential two step temperature reaction, namely a more severe temperature followed by a lower temperature. The product prepared by this process is a useful antioxidant for lubricating oil compositions.

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