| abstract |
A fluoropolymer solid composition which contains a fine particle comprising a fluoropolymer, said fluoropolymer having an acid/acid salt group, n said acid/acid salt group being a sulfonic acid group, —SO 2 NR 17 R 18 , a carboxyl group, —SO 3 NR 1 R 2 R 3 R 4 , —SO 3 M 1 1/L , —COONR 5 R 6 R 7 R 8 or —COOM 2 1/L (in which R 17 and R 18 are the same or different and each represents a hydrogen atom, an alkali metal, an alkyl group or a sulfonyl-containing group, R 1 , R 2 , R 3 and R 4 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R 5 , R 6 , R 7 and R 8 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, M 1 and M 2 are the same or different and each represents a metal whose valence is L, and said metal whose valence is L is a metal belonging to the group 1, 2, 4, 8, 11, 12 or 13 of the periodic table); said fine particle comprising the fluoropolymer containing, at the proportion of at least 25% by mass thereof, a spherical fluoropolymer fine particle, and said spherical fluoropolymer fine particle being substantially spherical. |