Fluorine-containing organopolysiloxane, a surface treatment composition comprising the same and an article treated with the composition
申请人:Yamane Yuji
公开号:US20070149746A1
公开(公告)日:2007-06-28
An organopolysiloxane represented by the following general formula (A), (B) or (C)
Si
n
R
1
2n+2
O
n−1
(A)
Si
n
R
1
2n
O
n
(B)
Si
n
R
1
2n+2
R
2
k
O
n−k
(C)
wherein R
1
may be the same with or different from each other and is a hydrogen atom or a monovalent organic group, R
2
is an alkylene group having 2 to 6 carbon atoms, n is an integer of from 2 to 40 and k is an integer of 1 to 3,
characterized in that at least two R
1
's are represented by the following formula (i):
wherein X is a hydrolyzable group, R
3
is an alkyl group having 1 to 4 carbon atoms or a phenyl group, y is an integer of from 1 to 5 and a is 2 or 3; and
one SiR
1
bond is represented by the following formula (ii) or one SiOSi bond is replaced with a bond represented by the following formula (iii):
SiQR
f
1
(ii)
SiQR
f
2
QSi (iii)
wherein R
f
1
is a monovalent group containing a perfluoroether residue, R
f
is a divalent group containing a perfluoroether residue, and Q is a divalent organic group.