Fluoroacrylic compound, fluorine-containing actinic-ray-curable composition, and article

A fluorine-containing acrylic compound having the following general formula (1):

• Y—Rf1—Z1-Q1-[Z2—X]a (1)
• wherein Rf1 is a divalent perfluoropolyether group with a molecular weight of 400 to 20,000 composed of a perfluoroalkylene group having 1 to 6 carbon atoms and an oxygen atom, Z1 is independently a divalent hydrocarbon group having 1 to 20 carbon atoms which may contain one or more selected from an oxygen atom, a nitrogen atom and a silicon atom, and which may contain a cyclic structure therein, with the proviso that Z1 is free of a urethane bond in its structure,
• Q1 is independently an (a+1)-valent linking group containing at least (a+1) number of silicon atoms, which may take a cyclic structure, and which may contain at least one selected from an oxygen atom, a nitrogen atom and a fluorine atom, with the proviso that Q1 is free of a urethane bond in its structure,
• Z2 is independently a divalent alkylene ether group having the following formula:
• —COH2O—(OC4H8)i(OC3H6)j(OC2H4)k(OCH2)l—
• wherein each repeating unit may be linear or branched, the repeating units may be randomly arranged, i, j, k, and l are each independently an integer of 0 to 10, wherein the sum of i, j, k, and l is 1 or more, in a range where a molecular weight of Z2 is 58 to 330, and o is an integer of 2 to 10,
• X is independently a hydrogen atom or a monovalent organic group containing an acrylic group or an α-substituted acrylic group which may contain at least one selected from an oxygen atom and a nitrogen atom, containing on the average at least one of the monovalent organic group containing an acrylic group or an α-substituted acrylic group per molecule, with the proviso that each X is free of a urethane bond in its structure, a is independently an integer of 1 to 10, and Y is a fluorine atom or a monovalent group of —Z1-Q1-[Z2—X]a, wherein Z1 and “a” number of Z2s enclosed in brackets [ ] in the formula (1) are all bonded to silicon atoms in the Q1 structure, respectively.