Invention Grant
- Patent Title: Process for preparing esters of lactic acid, and 2-hydroxy-3-butenoic acid from sugars
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Application No.: US16133146Application Date: 2018-09-17
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Publication No.: US10343986B2Publication Date: 2019-07-09
- Inventor: Irantzu Sadaba Zubiri , Esben Taarning
- Applicant: Haldor Topsoe A/S
- Applicant Address: DK Lyngby
- Assignee: Haldor Topsoe A/S
- Current Assignee: Haldor Topsoe A/S
- Current Assignee Address: DK Lyngby
- Agency: Blank Rome LLP
- Priority: EP14195485 20141128; DK201500288 20150513
- Main IPC: C07C319/18
- IPC: C07C319/18 ; C07C67/44 ; C07C67/475 ; C07C67/00 ; C07C69/68 ; C07C69/732
Abstract:
A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogs from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention facilitates Lewis acid catalyst stability in a continuous reaction process where the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.
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