Patent ID: 7294240
Filing Date: 2007-11-13
Classification: C07C,Y02P,Y10S

Abstract:
1. A process for preparing basic (meth)acrylates, comprising: transesterifying a lower alkyl (meth)acrylate with a basic alcohol in the presence of a catalyst in a reactor of a reactor system comprising at least one distillation column, wherein the reactor is continuously flushed with a purge gas of a gas or gas mixture that is inert to the reactants in the reactor; and distilling the (meth)acrylate transesterification product obtained to prepare a purified basic (meth)acrylate; where, upon distillation, a nonazeotropic mixture is formed and removed from the top of the at least one distillation column, in which mixture the content of lower alkyl (meth)acrylate is greater compared to an azeotropic mixture that is formed and is comprised of a lower alkanol R