Patent ID: 7026416
Filing Date: 2006-04-11
Classification: C08F

Abstract:
1. A fluoropolymer comprising a monomer unit formed cyclopolymerization of a fluorinated diene represented by the formula (1): wherein each of R 1 and R 2 which are independent from each other, is a hydrogen atom, a fluorine atom, an alkyl group having a carbon number of at most 3, or a fluoroalkyl group having a carbon number of at most 3; each of R 3 and R 6 which are independent from each other, is a single bond, an oxygen atom, an alkylene group having a carbon number of at most 3, which may have an etheric oxygen atom, or a fluoroalkylene group having a carbon number of at most 3, which may have an etheric oxygen atom; R 4 is a hydrogen atom, a fluorine atom, an alkyl group having a carbon number of at most 3, or a fluoroalkyl group having a carbon number of at most 3, which may have an etheric oxygen atom; and R 5 is a hydroxyl group blocked by a blocking group represented by the formula (2) or an organic group having a hydroxyl group blocked by the blocking group represented by the formula (2): R 7 is a hydrogen atom or an alkyl group having a carbon number of at most 3, and R 8 is a cycloalkyl group which may have a substituent, an organic group having at least one of said cycloalkyl group, a bicycloalkyl group which may have a substituent, or an organic group having at least one of said bicycloalkyl group).