The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2026
Filed:
Dec. 01, 2020
Deasyl SA, Plan-les-Ouates, CH;
Ecole Nationale Superieure DE Chimie DE Paris, Paris, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Christophe Len, Villers sur Coudun, FR;
Mohamad Khodadadi, Paris, FR;
Julien Thiel, Arbusigny, FR;
François Lacoste, Neuilly-sur-Seine, FR;
DEASYL SA, Plan-les-Ouates, CH;
ECOLE NATIONALE SUPERIEURE DE CHIMIE DE PARIS, Paris, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
Abstract
A method for manufacturing solketal ((2,2-Dimethyl-1,3-dioxolan-4-yl)methanol) includes: (1) milling starting reagents, including at least: glycerol, a catalyst selected from a hard Lewis acid including at least one transition metal, and acetone, the molar ratio (glycerol):(acetone) being less than or equal to 0.8; preferably less than or equal to 0.7, at an ambient temperature greater than or equal to 50° C., preferably greater than or equal to 56° C., in a three-dimensional microbead mill in a liquid phase for a residence time less than or equal to 15 minutes, preferably less than or equal to 10 minutes, and in particular less than or equal to 5 minutes; (2) recovering, as output from the mill, a final composition including solketal and, where appropriate, one or more sub-products corresponding to the starting reagents that have not reacted and/or to 1,3-O-isopropylidene-glycerol, and (3) optionally, separating the solketal from the one or more sub-products.