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US 2004/0000473 A1Published application
Process of separating 1-methoxy-2-propanol and 2-methoxy-1-propanol from aqueous compositions
OwnerWilli Hofen, Helmut Gehrke +4inventors
InventorsWilli Hofen, Helmut Gehrke, Barbel Kolbe, Dieter Wilken, Carsten Gehlen, Percy Kampeis
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Abstract
A process is disclosed of separating 1-methoxy-2-propanol and 2-methoxy-1-propanol from aqueous compositions, by dewatering of the aqueous composition containing 1-methoxy-2-propanol and 2-methoxy-1-propanol to a concentration of 1-methoxy-2-propanol and 2-methoxy-1-propanol of at least 90 percent by weight in total and isolation of 1-methoxy-2-propanol, 2-methoxy-1-propanol or mixtures thereof by distillation.
Claims16
A process for separating 1-methoxy-2-propanol and 2-methoxy-1-propanol from an aqueous composition containing same, comprising:
- a) dewatering of the aqueous composition comprising 1-methoxy-2-propanol and 2-methoxy-1-propanol to a concentration of 1-methoxy-2-propanol and 2-methoxy-1-propanol of at least 90 percent by weight in total to obtain a product, and
- b) isolating 1-methoxy-2-propanol and/or 2-methoxy-1-propanol or mixtures thereof from the product of step a) by distillation.
Dependencies are inferred from the claim text.