	US 12,227,473 B2
	Production of glycolaldehyde by thermolytic fragmentation
Christian Mårup Osmundsen, Gentofte (DK); and Morten Boberg Larsen, Smørum (DK)
Assigned to HALDOR TOPSØE A/S, KGS. Lyngby (DK)
Filed by HALDOR TOPSØE A/S, Kgs. Lyngby (DK)
Filed on Aug. 24, 2022, as Appl. No. 17/821,967.
Application 17/821,967 is a continuation of application No. 16/332,600, granted, now 11,472,761, previously published as PCT/EP2017/081987, filed on Dec. 8, 2017.
Claims priority of application No. 2016 00750 (DK), filed on Dec. 8, 2016.
Prior Publication US 2022/0402848 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C07C 45/60 (2006.01); B01J 47/04 (2006.01); C07C 45/81 (2006.01)

CPC C07C 45/60 (2013.01) [C07C 45/81 (2013.01); B01J 47/04 (2013.01)]

19 Claims

1. A process for the production of glycolaldehyde comprising the step of thermolytic fragmentation of a salt-depleted carbohydrate feedstock comprising at least 20 wt/wt % mono- and/or di-saccharide(s) and less than 200 ppm salts to obtain the glycolaldehyde, wherein the salt-depleted carbohydrate feedstock comprises one or more impurities selected from the group consisting of arsenic, lead, sulfate, sulfur dioxide, and 5-(hydroxymethyl)furfural.