Method for producing high-purity 1,3-butylene glycol
This method for producing a high-purity 1,3-butylene glycol includes: a step for heat-treating a preparation fluid containing 1,3-butylene glycol; a step for removing, by distillation, a low-boiling-point substance included in at least the treated fluid or the treated vapor which has been subjected...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | This method for producing a high-purity 1,3-butylene glycol includes: a step for heat-treating a preparation fluid containing 1,3-butylene glycol; a step for removing, by distillation, a low-boiling-point substance included in at least the treated fluid or the treated vapor which has been subjected to the heat-treatment. The content of the base in the preparation fluid in the heat treatment step is less than 0.2 mass%. |
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