申请人:Metrangolo Pierangelo
公开号:US20100197967A1
公开(公告)日:2010-08-05
The invention concerns a process for purifying α,ω-diiodoperfluorinated compounds of formula 1-(CF
2
CF
2
Y)
m
—I comprising contacting an impure α,ω-diiodoperfluorinated compound with a suitable sequestering agent, with formation of a reversible adduct and separating the α,ω-diiodoperfluorinated compound from the adduct itself. Diammonium dihalogenids of the general formula [R
1,2,3
N—(CH
2
)
n
—NR
4,5,6
]
2
*2X (R
1-6
=alkyl C
1
-C
6
n=8-26, X═I, Br, Cl) also called ‘methonium compounds’ are the preferred sequestering agents.
该发明涉及一种用于纯化α,ω-二碘全氟化合物的方法,其化学式为1-(CF2CF2Y)m—I,包括将不纯的α,ω-二碘全氟化合物与适当的螯合剂接触,形成可逆加合物,并将α,ω-二碘全氟化合物与加合物本身分离。一种常用的螯合剂是一种称为“甲铵化合物”的通式[R1,2,3N—(CH2)n—NR4,5,6]2*2X(R1-6=烷基C1-C6,n=8-26,X=I,Br,Cl)的二卤化二铵。