PURPOSE: To obtain a new di-(α-fluoroacrylic acid)fluoroalkyl ester useful as a raw material for forming a fluorine-containing cured film having a high surface hardness, a low refractive index, etc., and useful as a surface material for various kinds of base materials through a crosslinking polymerization. ;CONSTITUTION: A di-(α-fluoroacrylic acid)fluoroalkyl ester represented by formula I (X is a 2 to 14C fluoroalkyl having three or more fluorine atoms or a 4 to 14C fluorocycloalkyl having four or more fluorine atoms), e.g. di-(a- fluoroacrylic acid)-2-2,3,3,4,4,5,5,6,6,7,7,8,8,9,9-heptadecafluorononylethylene glycol of formula II. The compound of formula I can be synthesized, e.g. by conducting a ring-opening reaction between a fluorine-containing epoxy of formula III and an α-fluoroacrylic acid in the presence of a catalyst to obtain an α- fluoroacrylic acid hydroxyfluoroalkyl ester of formula IV and an α-fluoroacrylic acid hydroxyfluoroalkyl ester of formula V and then conducting an esterification reaction.;COPYRIGHT: (C)1995,JPO
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