公开(公告)号：US20160122276A1

公开(公告)日：2016-05-05

申请号：US14883803

申请日：2015-10-15

Applicant: BASF SE

Inventor： Andrea MISSKE ,  Hannelore Schirra ,  Christoph Fleckenstein ,  Martin Kaller ,  Ulrik Stengel ,  Mathieu Blanchot ,  Friederike Fleischhaker ,  Ritesh Nair

IPC: C07C67/02

CPC classification number: C07C67/58 ,  C07C67/03 ,  C07C69/54

Abstract: The invention relates to a method of preparing a C8-C22 alkyl (meth)acrylate by transesterification of C1-C2 alkyl (meth)acrylate with a C8-C22 alkanol, said method comprising the steps of(i) reacting C1-C2 alkyl (meth)acrylate with the C8-C22 alkanol in the presence of a particulate potassium phosphate heterogeneous catalyst and a stabilizer thus releasing C1-C2 alkanol,(ii) continuously distilling off the azeotrope of C1-C2 alkyl (meth)acrylate and the C1-C2 alkanol,wherein steps (i) and (ii) are carried out simultaneously until substantially all of the C8-C22 alkanol has reacted,(iii) distilling off unconverted C1-C2 alkyl (meth)acrylate,(iv) washing the C8-C22 alkyl (meth)acrylate-comprising product mixture obtained in steps (i) through (iii) with an aqueous phase to separate off the catalyst and the stabilizer from the product mixture with the aqueous phase and optionally adding a stabilizer,(v) distilling off water from the product mixture,wherein step (iii) may also be effected after step (iv) and together with step (v) and step (v) affords a product having a purity of >98 wt %.

Abstract translation: 本发明涉及通过C 1 -C 2烷基（甲基）丙烯酸酯与C 8 -C 22烷醇的酯交换反应制备C 8 -C 22烷基（甲基）丙烯酸酯的方法，所述方法包括以下步骤：（ⅰ）使C 1 -C 2烷基（ 甲基）丙烯酸酯与C8-C22烷醇在颗粒状磷酸钾多相催化剂和稳定剂存在下反应，从而释放C1-C2链烷醇，（ii）连续蒸馏出（甲基）丙烯酸C1-C2烷基酯和C1- C 2链烷醇，其中步骤（i）和（ii）同时进行，直到基本上所有的C 8 -C 22烷醇已反应，（iii）蒸馏未转化的（甲基）丙烯酸C 1 -C 2烷基酯，（iv）洗涤C8- 在步骤（i）至（iii）中获得的（甲基）丙烯酸C 22烷基酯产物混合物与水相分离催化剂和稳定剂与产物混合物与水相并任选地加入稳定剂，（v）蒸馏 来自产物混合物的脱水，其中步骤（iii）也可以是ef 在步骤（iv）之后并与步骤（v）和步骤（v）一起得到纯度> 98wt％的产物。