Process for manufacturing acrylic acid

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

Onderzoeksoutput: OctrooiOctrooi-publicatie

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Samenvatting

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.

Originele taal-2Engels
OctrooinummerWO2017108890
IPCC07C 51/ 09 A I
Prioriteitsdatum21/12/15
StatusGepubliceerd - 29 jun 2017

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Citeer dit

Verkuijl, B. J. V., van Krieken, J., Terrade, F. G., Bouwman, E., Gerritsen, G., & Wilting, J. (2017). IPC-nummer C07C 51/ 09 A I. Process for manufacturing acrylic acid. (Octrooi Nr. WO2017108890).