申请人:Komatsu Yuzo
公开号:US20100292408A1
公开(公告)日:2010-11-18
The present invention provides a preparation process for converting to a vinylidene fluoride elastomer having a group having sulfinic acid, sulfinic acid derivative, sulfonic acid or sulfonic acid derivative at one end or both ends of its trunk chain, and the preparation process provides a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR
1
R
2
—CR
3
R
4
—SO
2
H, wherein R
1
to R
4
may be the same or different and each is hydrogen atom or fluorine atom, by allowing a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR
1
R
2
—CR
3
R
4
—X
1
, wherein R
1
to R
4
are as defined above, X
1
is bromine atom or iodine atom, to react with a sulfur compound represented by the formula: (M
1
)
n
H
2−n
S
2
O
4
, wherein M
1
is a monovalent or divalent metal ion or ammonium ion, n is an integer of 0 to 2.
本发明提供了一种制备过程,用于将乙烯基氟弹性体转化为一种具有末端链上具有磺酸、磺酸衍生物、磺酸或磺酸衍生物基团的乙烯基氟弹性体,该制备过程通过使具有以下末端链的乙烯基氟弹性体在一端或两端具有以下末端基团的乙烯基氟弹性体与以下公式表示的硫化合物反应而提供了一种乙烯基氟弹性体:—CR1R2—CR3R4—SO2H,其中R1到R4可能相同或不同,且每个为氢原子或氟原子,其中X1为溴原子或碘原子,其中M1为一价或二价金属离子或铵离子,n为0至2的整数。