Patent ID: 9296679
Filing Date: 2016-03-29
CPC Classification: B01J,C07C,Y02P

Claim Text:
1. A process for the continuous production of 2-octyl acrylate by a transesterification reaction between a light alcohol acrylate and 2-octanol using an alkyl titanate as transesterification catalyst and at least one polymerization inhibitor, an azeotropic mixture comprising light alcohol acrylate and light alcohol generated by the transesterification reaction being withdrawn continuously during the reaction, a crude reaction mixture being subjected to a purification treatment comprising two distillation columns, in order to obtain, on the one hand, substantially pure 2-octyl acrylate and, on the other hand, unreacted 2-octanol and light alcohol acrylate compounds and also the catalyst all for recycle, wherein the process further comprises the steps of: choosing the catalyst from the group consisting of ethyl titanate in solution in 2-octanol and 2-octyl titanate; sending the crude reaction mixture comprising 2-octyl acrylate with, as light products, unreacted 2-octanol and light alcohol acrylate and, as heavy products, catalyst, polymerization inhibitor and also heavy reaction products to a first distillation column (B) having a top and a bottom and under reduced pressure for distillation in said first column (B), to obtain: sending the bottom stream from the first distillation column (B) to a second distillation column (C) having a top and bottom and under reduced pressure, for distillation to obtain: recycling the bottom stream from the second distillation column (C) to the reaction, at least in part.