US 2021/0198170 A1 · METHOD FOR PURIFYING PHENOL

Abstract

The present invention relates to a method for purifying phenol, which comprises: contacting a phenol stream comprising hydroxy acetone, 2-methylbenzofuran, 3-methylbenzofuran and phenol with an acyl chloride in the presence of an organic sulfonic acid to convert one or more selected from the group consisting of hydroxyacetone, 2-methylbenzofuran and 3-methylbenzofuran into a high boiling point compound having a boiling point higher than that of the phenol; and recovering the high boiling point compound from the phenol stream.

Claims8

Dependent claims

A method for purifying phenol, comprising:

contacting a phenol stream comprising hydroxyacetone, 2-methylbenzofuran, 3-methylbenzofuran and phenol with an acyl chloride in the presence of an organic sulfonic acid to convert one or more selected from the group consisting of hydroxyacetone, 2-methylbenzofuran and 3-methylbenzofuran into a high boiling point compound having a boiling point higher than that of the phenol;
and
recovering the high boiling point compound from the phenol stream.

Dependencies are inferred from the claim text.

Facts

Application

15/778,584Filed 11 Jan 2018

Priority

KR 10-2017-001126924 Jan 2017

Published

1 Jul 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C07C 37/74
By physical treatment: by distillation
C07C 37/86
Purification; separation; Use of additives, e.g. for stabilisation: by treatment giving rise to a chemical modification
C07C 37/78
By distillation: by azeotropic distillation
C07D 307/79
Benzo [b] furans; Hydrogenated benzo [b] furans: with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to…

Method for purifying phenol

Life of this patent

Method for purifying phenol

Life of this patent

Abstract

Claims8