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US5312935A Purification of fluorinated carboxylic acids 失效
氟化羧酸的纯化

Purification of fluorinated carboxylic acids
摘要:
Fluorinated carboxylic acids which do not have the required purity for use as emulsifier in the polymerization of fluorinated monomers can, if necessary after prior de-watering, be treated with oxidants, whereupon the isolation of the pure product is carried out by crystallisation or, preferably, by distillation.
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