Back to results
US 5,527,969 AGranted
Process for preparing acetaldehyde diethyl acetal
AssigneeHuels Aktiengesellschaft
InventorsManfred Kaufhold, Moustafa El-Chahawi
Life of this patent
Estimating the term…
Abstract
A process for preparing acetaldehyde diethyl acetal is provided which involves: reacting acetaldehyde with ethanol in the presence of an acid catalyst and in the presence of an entrainer having a boiling point of from 25.degree. to 75.degree. C.
Claims8
A process for preparing acetaldehyde diethyl acetal, comprising:
- heating an entrainer and a first portion of ethanol to boiling;
- adding acetaldehyde, a second portion of ethanol and a catalyst to form a reaction mixture;
- distilling from said reaction mixture a distillate mixture comprising over 50% of ethanol and water;
- recovering unreacted acetaldehyde from said distillate mixture, and recycling said recovered unreacted acetaldehyde to said reaction mixture;
- and
- recovering acetaldehyde diethyl acetal from said reaction mixture.
3 more elements
Dependencies are inferred from the claim text.