Fluorine-containing organopolysiloxane, a surface treatment composition comprising the same and an article treated with the composition

摘要

A fluorine-containing organopolysiloxane represented by the following average compositional formula (1)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(Z 2 Q) ² Rf(QZ 1 A ± ) 2-² €ƒ€ƒ€ƒ€ƒ€ƒ(1)
wherein Rf is a divalent group containing a perfluoroether residue,
Q
is a divalent organic group,
Z 1
is a di- to nona-valent organopolysiloxane residue and may contain a silalkylene bond,
±
is an integer of from 1 to 8,
²
is a number larger than 0 and smaller than 2,
Z 2
is a monovalent group represented by the following formula (2)
wherein b is an integer of from 1 to 10, R 1 may be the same with and different from each other and is an alkyl group having 1 to 4 carbon atoms or a phenyl group, and
A
is a monovalent group represented by the following formula (3)
wherein R 2 is an alkyl group having 1 to 4 carbon atoms or a phenyl group, X is a hydrolyzable group, a is 2 or 3, and c is an integer of from 1 to 6.