Process for manufacturing acrylic acid

B.J.V. Verkuijl (Inventor), Jan van Krieken (Inventor), F.G. Terrade (Inventor), Elisabeth Bouwman (Inventor), Gijsbert Gerritsen (Inventor), Jos Wilting (Inventor)

Research output: PatentPatent publication

10 Downloads (Pure)

Abstract

The invention pertains to a process for preparing acrylic acid and/or the ester of acrylic acid and lactic acid from a lactic acid oligomer or polymer, comprising the steps of - bringing a reaction mixture comprising the lactic acid oligomer or polymer to reaction conditions to form acrylic acid and/or the ester of acrylic acid and lactic acid, the reacting mixture comprising a halide source selected from a bromide source and/or a chloride source and optionally an acid selected from the group of acids with a pKa of at most 2.0 and compounds which under reaction conditions decompose under the formation of an acid with a pKa of at most 2.0, with the reaction mixture comprising less than 1 wt. % of water, and - keeping the reaction mixture under reaction conditions for a time sufficient to produce acrylic acid and/or the ester of acrylic acid and lactic acid. It has been found that the use of a bromide source and/or a chloride source in combination with the specified acid results in a process which can be operated to obtain a high yield, and is relatively easy to perform.

Original languageEnglish
Patent numberWO2017108890
IPCC07C 51/ 09 A I
Priority date21/12/15
Publication statusPublished - 29 Jun 2017

Fingerprint Dive into the research topics of 'Process for manufacturing acrylic acid'. Together they form a unique fingerprint.

Cite this