- A high-purity (butoxy ethyl) phosphate ester industrial preparation method (by machine translation)
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The invention relates to a high-purity (butoxy ethyl) phosphate ester of preparation method, the method comprises the following steps: 1) the vacuum condition through the phosphorus oxychloride and ethylene glycol monobutyl ether in the Lewis catalyst under the action of reaction; 2) after the reaction, vacuum-recycle a large amount of glycol flatting, reactant in ethylene glycol monobutyl ether content in the range of 5 - 10%, stop distilling; 3) alkali to neutralize, in and to PH=5 - 8, then distilled under reduced pressure, until the ethylene glycol monobutyl ether content is less than 0.1% stop distilling, to obtain crude; 4) washing the crude product is separated, washed in addition to the water of the product is distilled under reduced pressure to obtain high-purity (butoxy ethyl) phosphate ester. The method of the invention is simple, the purity of the product, in color, to improve the yield is very large. (by machine translation)
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Paragraph 0047-0087
(2019/11/04)
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