abstract |
a compound represented by the formula (I),n□ wherein R1 represents a hydrogen atom, a halogen atom or a C1-C6 alkyl group, wherein the hydrogen atom may be replaced by a halogen atom, L1 represents a C1-C8 fluorinated alkanediyl group, and X1 represents *-CO-O-, *-O-CO- , *-O-CO-O- or *-O-, wherein * represents a binding site to L1, and R2 represents a C1-C18 hydrocarbon group, wherein the methylene group may be replaced by an oxygen atom, a carbonyl group or a sulfonyl group and wherein The hydrogen atom may be replaced by a hydroxyl group, or two of the hydrogen atoms may each be replaced by an oxygen atom to form a ketal structure together with a C1-C8 alkanediyl group bonded to the oxygen atom, and the hydrogen atom in the ketal structure It can be replaced by a fluorine atom. |