| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of producing a fluorine-containing polymer using an emulsifier low in bioaccumulation potential, and a fluorine-containing polymer aqueous dispersion excellent in mechanical stability. <P>SOLUTION: A fluorine-containing monomer is polymerized by emulsion polymerization in the presence of an polyfluoroalkyl phosphonate emulsifier represented by the general formula: C<SB POS="POST">n</SB>F<SB POS="POST">2n+1</SB>(CH<SB POS="POST">2</SB>CF<SB POS="POST">2</SB>)<SB POS="POST">a</SB>(CF<SB POS="POST">2</SB>CF<SB POS="POST">2</SB>)<SB POS="POST">b</SB>(CH<SB POS="POST">2</SB>CH<SB POS="POST">2</SB>)<SB POS="POST">c</SB>P(O)(OM<SP POS="POST">1</SP>)(OM<SP POS="POST">2</SP>) [I] where M<SP POS="POST">1</SP>is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base; M<SP POS="POST">2</SP>is an alkali metal, an ammonium base, or an organic amine base; n is an integer of 1-6; a is an integer of 1-4; b is an integer of 1-3; and c is an integer of 1-3. A product obtained by coagulating a thus obtained fluorine-containing polymer aqueous dispersion is filtrated, washed with water, and dried. <P>COPYRIGHT: (C)2012,JPO&INPIT |
