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Mutual separated method null of non functionality, single functionality and two functionality kinds which are included in Pell fluoro
Mutual separated method null of non functionality, single functionality and two functionality kinds which are included in Pell fluoro
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机译:Pell fluor包含的非功能,单一功能和两种功能的相互分离方法无效
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摘要
A process for separating, or enriching, in non-functional, monofunctional and bifunctional species the perfluoropolyoxyalkylenes of formula (I): Z-O-Rf-Y where Rf = a perfluoropolyoxyalkylene chain comprising one or more monomeric units of formula CHEM CHEM CFXO (X = F, CF7), and optionally also units (-CF6CF6O-); Z, Y, like or different from each other, are non-functional groups or functional groups -OH, with at least Z or Y in part of such perfluoropolyoxyalkylenes being or containing an -OH group, which consists in subjecting said perfluoropolyoxyalkylenes to column chromatography using, as eluents, non-polar fluorinated solvents, either alone or in admixture with polar solvents.
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