Process and manufacturing equipment for preparing acetals and ketals
AssigneeRoche Vitamins Inc.
InventorsVolkmar Boesch, Juan Ramon Herguijuela
Life of this patent
Estimating the term…
Abstract
A process for the preparation of acetals and ketals by reacting an aldehyde or ketone with an alcohol in the presence of an acidic catalyst and removing water by pervaporation. Manufacturing equipment for the preparation of acetals and ketones is also provided.
Claims15
Process for the preparation of acetals or ketals which comprises reacting an aldehyde or ketone with an alcohol in the presence of a solid acid, and removing water from the reaction product by pervaporation.
Process for recovering acetals or ketals from reaction mixtures obtained by reacting aldehydes or ketones with alcohols in the presence of a solid acid which process comprises subjecting the reaction mixture containing an acetal or ketal together with water and unreacted aldehyde or ketone and alcohol to treatment with a solid base followed by pervaporation to remove water from the reaction product.
A process as in claim 12 wherein heat produced in cooling the reaction mixture for the acetalisation or ketalisation reaction is used to heat the reaction product in the pervaporation unit.
The novel process and manufacturing equipment substantially as described hereinbefore, especially with reference to the Example and the Drawing.
Dependencies are inferred from the claim text.