A composition comprising: at least one fluorine-containing polymer having a curable moiety and being at least one of any of the formulae and: Rf-R 1 -R 2 -R 3 -(R 4) n1 -R 5 -R 6 R 6 -R 5 -(R 4) n1 -R 3 -R 2 -R 1 -R 2 -R 3 -(R 4) n1 -R 5 -R 6 wherein: Rf is optionally fluorinated C 1-16 -alkyl R 1 is a group -(OC 4 F 8) w -(OC 3 F 6) a -(OC 2 F 4) b -(OCF 2) c - wherein a, b, c and w each independently are an integer of 0-200, ( a + b + c + w) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 2 is a group - d - e -(CH 2) f - wherein Q is O, phenylene, carbazolylene, -NR a - wherein R a is H or an organic group, or a divalent polar group, Z is H, F or lower fluoroalkyl, and d, e and f are each independently an integer of 0-50 and ( d + e + f) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 3 is a divalent organic group, R 4 each independently is R 4a or R 4b, provided that at least one R 4 is R 4a, R 4a each independently is a divalent organic group having a curable moiety, R 4b each independently is a divalent organic group having no curable moiety, n1 is an integer of 1-50, R 5 is -O-, -S-, -NH- or a bond, and R 6 is Rf-R 1 -R 2 wherein Rf, R 1 and R 2 are as defined above, a monovalent organic group or H; and at least one silicon-containing polymer having a curable moiety and being at least one of any one of the formulae and: wherein R 18 R 11 -R 17 and R 20 -R 25 each independently are alkyl or aryl, is a divalent organic group, X 1 is H, Cl, F, or C 1-10 -alkyl optionally substituted by an F-atom, and n4 and n5 each independently are an integer of 1-500. at least one fluorine-containing polymer having a curable moiety and being at least one of any of the formulae and: Rf-R 1 -R 2 -R 3 -(R 4) n1 -R 5 -R 6 R 6 -R 5 -(R 4) n1 -R 3 -R 2 -R 1 -R 2 -R 3 -(R 4) n1 -R 5 -R 6 wherein: Rf is optionally fluorinated C 1-16 -alkyl R 1 is a group -(OC 4 F 8) w -(OC 3 F 6) a -(OC 2 F 4) b -(OCF 2) c - wherein a, b, c and w each independently are an integer of 0-200, ( a + b + c + w) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 2 is a group - d - e -(CH 2) f - wherein Q is O, phenylene, carbazolylene, -NR a - wherein R a is H or an organic group, or a divalent polar group, Z is H, F or lower fluoroalkyl, and d, e and f are each independently an integer of 0-50 and ( d + e + f) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 3 is a divalent organic group, R 4 each independently is R 4a or R 4b, provided that at least one R 4 is R 4a, R 4a each independently is a divalent organic group having a curable moiety, R 4b each independently is a divalent organic group having no curable moiety, n1 is an integer of 1-50, R 5 is -O-, -S-, -NH- or a bond, and R 6 is Rf-R 1 -R 2 wherein Rf, R 1 and R 2 are as defined above, a monovalent organic group or H; and Rf is optionally fluorinated C 1-16 -alkyl R 1 is a group -(OC 4 F 8) w -(OC 3 F 6) a -(OC 2 F 4) b -(OCF 2) c - wherein a, b, c and w each independently are an integer of 0-200, ( a + b + c + w) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 2 is a group - d - e -(CH 2) f - wherein Q is O, phenylene, carbazolylene, -NR a - wherein R a is H or an organic group, or a divalent polar group, Z is H, F or lower fluoroalkyl, and d, e and f are each independently an integer of 0-50 and ( d + e + f) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, Q is O, phenylene, carbazolylene, -NR a - wherein R a is H or an organic group, or a divalent polar group, Z is H, F or lower fluoroalkyl, and d, e and f are each independently an integer of 0-50 and ( d + e + f) ≥ 1, and the order of occurrence of the respective repeating units in parentheses in the formula is not limited, R 3 is a divalent organic group, R 4 each independently is R 4a or R 4b, provided that at least one R 4 is R 4a, R 4a each independently is a divalent organic group having a curable moiety, R 4b each independently is a divalent organic group having no curable moiety, n1 is an integer of 1-50, R 5 is -O-, -S-, -NH- or a bond, and R 6 is Rf-R 1 -R 2 wherein Rf, R 1 and R 2 are as defined above, a monovalent organic group or H; and at least one silicon-containing polymer having a curable moiety and being at least one of any one of the formulae and: wherein R 18 R 11 -R 17 and R 20 -R 25 each independently are alkyl or aryl, is a divalent organic group, X 1 is H, Cl, F, or C 1-10 -alkyl optionally substituted by an F-atom, and n4 and n5 each independently are an integer of 1-500. R 18 R 11 -R 17 and R 20 -R 25 each independently are alkyl or aryl, is a divalent organic group, X 1 is H, Cl, F, or C 1-10 -alkyl optionally substituted by an F-atom, and n4 and n5 each independently are an integer of 1-500.