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US 9,994,544 B2Granted
Method for preparing trioxane
AssigneeArkema France
InventorsBernard Monguillon, Jean-Alex Laffitte
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Abstract
The present invention concerns a method for preparing 1,3,5-trioxane by trimerization of formaldehyde in the presence of methanesulfonic acid. The invention also concerns the use of at least one catalyst comprising methanesulfonic acid for the trimerization of formaldehyde into 1,3,5-trioxane.
Claims22
A process for the trimerization of formaldehyde to produce trioxane, comprising:
- (a) reacting formaldehyde in a reaction mixture comprising water, at least one protic organic solvent, or both, and no aprotic solvent, in the presence of a catalyst comprising at least methanesulfonic acid, to produce trioxane;
- and
- (b) separating the trioxane from the reaction mixture.
Dependencies are inferred from the claim text.