| abstract |
In separating the method containing Ketohexamethylene and the mixture of phenol, at the solvent containing at least two alcoholic extract hydroxyl group being connected with non-conterminous saturated carbon atom and at least one hemiketal defined by formula (I) or formula (II), and/or the enol ether that the hemiketal defined by formula (I) or formula (II) is derivative: Wherein R 1 The most identical or different, independently be the alkylidene with 2 10 carbon atoms, R 2 It is the alkylidene with 4 10 carbon atoms, and R 3 It is hydrogen or following radicals: And/or in the presence of the derivative enol ether of the hemiketal that defined by formula (I) or formula (II), distillation this mixture at least some of, wherein gross weight based on the raw material being fed to distilation steps (a), the hemiketal expressed with percentage by weight and the total concentration of enol ether are at least 0.01%. |