Abstract: There is provided a method for producing an aqueous dispersion of fluorine-containing seed polymer (B) particles, comprising a step for preparing an aqueous dispersion of fluorine-containing polymer (A) particles by polymerizing monomer comprising at least one fluoroolefin in an aqueous dispersion in the presence of a compound (1) represented by the formula: CH2?CHCH2—O—R, wherein R is a hydrocarbon group which may have an oxygen atom, a nitrogen atom and/or a polar group, and (II) a step for seed-polymerizing ethylenically unsaturated monomer with the fluorine-containing polymer (A) particles in the aqueous dispersion of the fluorine-containing polymer (A) particles.

Abstract: An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound represented by the formula: CH2?CHCH2—O—(C?O)CHXCH2COO(CH2)nCH3 (in the formula, X is H or SO3Y wherein Y is NH4 or an alkaline metal; and n is an integer of 0 to 19.

Abstract: An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound (1) represented by the formula: CH2?CR1—R2—O-(AO)p—X (in the formula, R1 is hydrogen or an alkyl group; R2 is an alkylene group having two or more carbon atoms; AO is a linear or branched oxyalkylene group having 2 to 4 carbon atoms; p is a positive integer; X is H or SO3Y wherein Y is NH4 or an alkaline metal; and AO may be the same or different and may form two or more blocks if there is more than one AO.

Abstract: An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound (1) represented by the formula: CH2?CR1—R2—O-(AO)p—X (in the formula, R1 is hydrogen or an alkyl group; R2 is an alkylene group having two or more carbon atoms; AO is a linear or branched oxyalkylene group having 2 to 4 carbon atoms; p is a positive integer; X is H or SO3Y wherein Y is NH4 or an alkaline metal; and AO may be the same or different and may form two or more blocks if there is more than one AO.

Abstract: An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound represented by the formula: CH2?CHCH2—O—(C?O)CHXCH2COO(CH2)nCH3 (in the formula, X is H or SO3Y wherein Y is NH4 or an alkaline metal; and n is an integer of 0 to 19.

Abstract: There is provided a method for producing an aqueous dispersion of fluorine-containing seed polymer (B) particles, comprising a step for preparing an aqueous dispersion of fluorine-containing polymer (A) particles by polymerizing monomer comprising at least one fluoroolefin in an aqueous dispersion in the presence of a compound (1) represented by the formula: CH2?CHCH2—O—R, wherein R is a hydrocarbon group which may have an oxygen atom, a nitrogen atom and/or a polar group, and (II) a step for seed-polymerizing ethylenically unsaturated monomer with the fluorine-containing polymer (A) particles in the aqueous dispersion of the fluorine-containing polymer (A) particles.