| abstract |
A solid fluoropolymer composition containing fine particles of a fluoropolymer, characterized in that the fluoropolymer has acid or acid-base groups, the acid or acid-base groups being sulfo, -SO2NR17R18, carboxy, -SO3NR1R2R3R4, -SO3M11/L, -COONR5R6R7R8, or -COOM21/L (wherein R17 and R18 are the same or different and each represents hydrogen, an alkali metal, alkyl, or a sulfonyl-containing group; R1, R2, R3, and R4 are the same or different and each represents hydrogen or C1-4 alkyl; R5, R6, R7, and R8 are the same or different and each represents hydrogen or C1-4 alkyl; and M1 and M2 are the same or different and each represents a metal having a valence of L, the L-valent metal belonging to Group 1, 2, 4, 8, 11, 12, or 13 of the Periodic Table), and that the fine fluoropolymer particles comprise at least 25 wt.% substantially spherical, fine fluoropolymer particles. |