Process for the preparation of propylene glycol monomethyl ether acetate capable of preparing propylene glycol monomethyl ether acetate with high conversion rate and high purity
The present invention provides a process for the preparation of propylene glycol monomethyl ether acetate, and the process for the preparation of propylene glycol monomethyl ether acetate of the present invention can prepare propylene glycol monomethyl ether acetate with high conversion rate and hig...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The present invention provides a process for the preparation of propylene glycol monomethyl ether acetate, and the process for the preparation of propylene glycol monomethyl ether acetate of the present invention can prepare propylene glycol monomethyl ether acetate with high conversion rate and high purity by controlling the content of 2-methoxy-1-propanol exists in the raw material that contains propylene glycol monomethyl ether, wherein, relative to the total weight of the raw material, the content of propylene glycol monomethyl ether is 99.99 wt% or more and the content of 2-methoxy-1-propanol is 0.005 wt% or less. |
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