Method of purification of .beta.-phenylethyl alcohol
AssigneeSumitomo Chemical Company, Limited
InventorsTakashi Deguchi, Masahiro Usui, Yasuhiko Higashio
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Abstract
A method of purification of crude .beta.-phenylethyl alcohol to give a highly pure .beta.-phenylethyl alcohol suitable as a perfume, which comprises subjecting the crude .beta.-phenylethyl alcohol to azeotropic distillation in the presence of an azeotropic solvent selected from water, an alkylene glycol, an alkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents, or extractive distillation in the presence of an extractive solvent selected from glycerine, an alkylene glycol, a polyalkylene glycol, an alkylene glycol monoalkyl ether, a polyalkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents.
Claims11
A method of purification of crude .beta.-phenylethyl alcohol, which comprises:
- introducing a mixture of crude .beta.-phenylethyl alcohol and a solvent selected from the group consisting of water, glycerine, an alkylene glycol, a polyalkylene glycol, an alkylene glycol monoalkyl ether, a polyalkylene glycol monoalkyl ether and mixtures thereof into a distillation column;
- and
- distilling off impurities from the top of said column and removing .beta.-phenylethyl alcohol from the bottom of said column.
A method of purification of crude .beta.-phenylethyl alcohol, which comprises:
- introducing a mixture of crude .beta.-phenylethyl alcohol and a solvent selected from the group consisting of water, glycerine, an alkylene glycol monoalkyl ether, a polyalkylene glycol monoalkyl ether and mixtures thereof into an azeotropic distillation column;
- and
- subjecting said mixture to azeotropic distillation in said azeotropic distillation column and removing impurities and said solvent from the top of said azeotropic distillation column and removing the .beta.-phenylethyl alcohol from the bottom of said azeotropic distillation column.
Dependencies are inferred from the claim text.