FLUOROETHERCARBOXYLIC ACID AND PRODUCTION METHOD THEREOF, SURFACTANT, METHOD OF PRODUCING FLUOROPOLYMER AND AQUEOUS DISPERSION USED THEREOF
申请人:ISHIKAWA Takuji
公开号:US20090176942A1
公开(公告)日:2009-07-09
The invention provides a fluoroethercarboxylic acid which is represented by the general formula (I):
Rf
1
OCHFCF
2
ORf
2
COOM (I)
wherein Rf
1
represents a partially or fully fluorinated alkyl group, which may optionally be interrupted with one or more oxygen atoms, Rf
2
represents a partially or fully fluorinated alkylene group, which may optionally be interrupted with one or more oxygen atoms, and M represents a monovalent alkali metal, NH
4
or H. The fluoroethercarboxylic acid can be suitably used as a surfactant and is low in bioaccumulation. The invention is also a method of fluoropolymer production and an aqueous fluoropolymer dispersion, using the fluoroethercarboxylic acid as a surfactant.