| abstract |
An organopolysiloxane represented by the following general formula (A), (B) or(C)n nSi n R 1 2n+2 O n−1 (A)n nSi n R 1 2n O n (B)n nSi n R 1 2n+2 R 2 k O n−k (C)n 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): nn n n n n n n n n n n n 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 n one SiOSi bond is replaced with a bond represented by the following formula (iii):n nSiQR f 2 QSi (iii)n n wherein R f 1 is a monovalent group containing a perfluoroether residue, R f 2 is a divalent group containing a perfluoroether residue, and Q is a divalent organic group. |