| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily removing a one-terminal-vinylated polymer of formula (2): R2-Rf-(Z)a-CH=CH2 [Z is -CH2-, -CH2O-, -CH2OCH2-, or -Y-NR1-CO- (Y is -CH2- or a group of the formula; and R1 is H or an optionally substituted monovalent hydrocarbon group); Rf is a divalent perfluoroalkylene or a divalent perfluorooxyalkylene; each a is independently 0 or 1; and R2 is H, F, or a monovalent alkyl optionally containing an ether oxygen atom in the molecular chain] from a polymer mixture which mainly comprises a both-terminals-vinylated polymer of formula (1) [Z, Rf, and a are each the same as those in formula (2)] and contains a one-terminal-vinylated polymer as an impurity to thereby purify the both-terminals-vinylated polymer. SOLUTION: The method comprises bringing the polymer mixture into contact with an adsorbent to selectively cause the one-terminal-vinylated polymer to be adsorbed and removed.
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