FORFARANDE FOR FRAMSTELLNING AV METANOLFATTIGA VATTENLOSNINGAR AV FORMALDEHYD

摘要

The production of a formaldehyde solution having a low content of methanol by distilling aqueous formaldehyde solution containing methanol in the presence of a mixture of at least one alkanol of more than seven carbon atoms and at least one dialkyl ether of more than seven carbon atoms per alkyl group.