Fluorine-containing compound

A compound represented by a general formula (1):

• L-(R1—X—Rf—Y—R2)n (1)
• wherein L is represented by a general formula (L-1):
• CH2═CA-Z—* (L-1)
• wherein A represents a hydrogen atom, a hydrocarbon group having 1 to 4 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom,
• Z represents a divalent linking group, and
• symbol * represents a bonding hand of L;
• or
• L is a carbon-containing linker moiety prepared by a process including reacting
• (a) at least one isocyanate group-containing compound selected from the group consisting of isocyanate, diisocyanate and polyisocyanate, and
• (b) at least one isocyanate reactive compound selected from the group consisting of compounds represented by general formulae (2a), (2b) and (2c):
• wherein, in the general formulae (2a) and (2c),
• each R independently represents —H, -*, —C(O)—*, —(CH2CH2O)p(CH(CH3)CH2O)qH, —(CH2CH2O)p(CH(CH3)CH2O)q—*, or —(CH2CH2O)p(CH(CH3)CH2O)qC(O)—*,
• each p independently represents 0 to 20,
• each q independently represents 0 to 20,
• p+q is larger than 0,
• symbol * represents a bonding hand of L, and
• at least one R represents —H or —(CH2CH2O)p(CH(CH3)CH2O)qH, and at least another one R represents -*, —C(O)—*, —(CH2CH2O)p(CH(CH3)CH2O)q—*, or —(CH2CH2O)p (CH(CH3)CH2O)qC(O)—*, with the proviso that the isocyanate reactive compound is represented by the general formula (2a) or (2c);
• and
• wherein, in the general formula (2b),
• each R′ independently represents —H, -*, —C(O)—*, —(CH2CH2O)p′(CH(CH3)CH2O)q′H, —(CH2CH2O)p′(CH(CH3)CH2O)q—*, or —(CH2CH2O)p′(CH(CH3)CH2O)q′C(O)—*,
• each R″ independently represents —H, -*, —(CH2CH2O)p′(CH(CH3)CH2O)q′H, —(CH2CH2O)p′(CH(CH3)CH2O)q—*, or —(CH2CH2O)p′(CH(CH3)CH2O)q′C(O)—*,
• each p′ independently represents 0 to 20,
• each q′ independently represents 0 to 20,
• p′+q′ is larger than 0,
• symbol * is a bonding hand of L, and
• at least one selected from R′ and R″ represents —H or —(CH2CH2O)p′(CH(CH3)CH2O)q′H, and at least another one selected from R′ and R″ represents -*, —C(O)—*, —(CH2CH2O)p′(CH(CH3)CH2O)q′—*, or —(CH2CH2O)p′(CH(CH3)CH2O)q′C(O)—*, with the proviso that the isocyanate reactive compound is represented by the general formula (2b);
• and
• n represents an integer of 1 or more,
• Rf represents a linear or branched fluoroalkylene group containing 1 to 4 of at least any of a CF2 unit, a CFH unit and a CFRf′ unit, and optionally having an ether bond, wherein Rf′ represents a fluoroalkyl group having 1 carbon atom,
• R1 represents a linear or branched hydrocarbon group having 1 to 4 carbon atoms,
• R2 represents a linear or branched hydrocarbon group having 7 to 29 carbon atoms, containing no fluorine atoms, and optionally having an ether bond, and
• X and Y each independently represent a direct bond or a divalent linking group.