Mesityl oxide removal from high-purity phenol
A process for the purification of phenol obtained from the acid cleavage of cumene hydroperoxide and consisting essentially of phenol and less than 1,000 parts per million of water-soluble colour forming impurities boiling from 152 DEG to 182 DEG by subjecting the phenol to a fractional distillation...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for the purification of phenol obtained from the acid cleavage of cumene hydroperoxide and consisting essentially of phenol and less than 1,000 parts per million of water-soluble colour forming impurities boiling from 152 DEG to 182 DEG by subjecting the phenol to a fractional distillation such that the impurities are retained within the column under distillation conditions for a period so as to concentrate them and at least partially to decompose them to mesityl oxide, removing a base product comprising phenol free from the water-soluble colour forming impurities boiling from 152 DEG to 182 DEG and an overhead fraction containing mesityl oxide and thereafter separating the phenol free from the higher boiling decomposition products. |
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