Fluorinated compound, fluoropolymer and process for its production

摘要

The present invention provides a fluorinated compound having functional groups in a high concentration so that adequate characteristics of the functional groups can be obtained and having high transparency in a wide wavelength region, a fluoropolymer, and a process for its production. The present invention provides a fluorinated diene represented by the following formula (1): CF₂-CFCH₂CH(C(R¹)(R²)(OH))CH₂CH-CH₂ (1) wherein each of R¹ and R² which are independent of each other, is a fluorine atom or a fluoroalkyl group having at most 5 carbon atoms.