	US 11,952,336 B2
	Process for separation of methanol and methyl (meth)acrylate
Marcel Treskow, Darmstadt (DE); Jerald Andrew Jones, Mobile, AL (US); Marc Becker, Dortmund (DE); Zoe Zegers, Mobile, AL (US); Kevin Lackey, Daphne, AL (US); Ghanem Sabeeh, Richmond, TX (US); and Alexander May, Seeheim-Jugenheim (DE)
Assigned to Evonik Operations GmbH, Essen (DE)
Appl. No. 18/546,583
Filed by Evonik Operations GmbH, Essen (DE)
PCT Filed Feb. 7, 2022, PCT No. PCT/EP2022/052808 § 371(c)(1), (2) Date Aug. 15, 2023, PCT Pub. No. WO2022/175122, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 21157515 (EP), filed on Feb. 17, 2021.
Prior Publication US 2024/0034711 A1, Feb. 1, 2024
Int. Cl. C07C 67/02 (2006.01); B01D 3/00 (2006.01); B01D 3/40 (2006.01); B01J 31/16 (2006.01); C07C 29/84 (2006.01); C07C 67/54 (2006.01)

CPC C07C 67/02 (2013.01) [B01D 3/009 (2013.01); B01D 3/40 (2013.01); B01J 31/1616 (2013.01); C07C 29/84 (2013.01); C07C 67/54 (2013.01); B01J 2231/49 (2013.01); B01J 2531/46 (2013.01)]

20 Claims

1. A process for producing a distillate product with a methanol concentration greater than the concentration of methanol in a minimum boiling azeotrope of methanol and methyl (meth)acrylate, from a mixture of methanol and methyl (meth)acrylate with a methanol concentration less than or equal to the concentration of methanol in the minimum boiling azeotrope of methanol and methyl (meth)acrylate in a distillation column, the process comprising:

contacting a mixture of methanol and methyl (meth)acrylate, with a methanol concentration less than or equal to the concentration of methanol in the minimum boiling azeotrope of methanol and methyl (meth)acrylate,

with an alcohol of formula (I)

HO—R¹ (I),

in which R¹is a linear or branched, acyclic or cyclic alkyl, aryl or alkenyl radical having 6 to 22 carbon atoms,

wherein the alcohol of formula (I) is added via an alcohol feed located at the distillation column.