SEPARATION BY RECTIFICATION OF (METH)ACRYLIC ACID FROM A MIXTURE CONTAINING (METH)ACRYLIC ACID AND AN INERT HYDROPHOBIC ORGANIC LIQUID HAVING A BOILING POINT HIGHER THAN THAT OF (METH)ACRYLIC ACID AS MAIN CONSTITUENTS AND ALSO LOWER AL EHYDES AS SECONDARY CONSTITUENTS

摘要

In a process for the separation by rectification of (meth)acrylic acid from a mixture containing (meth)acrylic acid and an inert hydrophobic organic liquid having a boiling point higher than that of (meth)acrylic acid as main constituents and also lower aldehydes as secondary constituents, a primary amine and/or a salt thereof are added.