Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and composition

A method for producing a fluoropolymer comprising:

• polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, the surfactant being a compound represented by the following general formula (1-1) or a compound represented by the general formula (1-2):
• wherein R3 to R5 each represent H or a monovalent substituent;
• X is the same or different at each occurrence and represents a direct bond or a divalent linking group containing at least one selected from the group consisting of a carbonyl group, an ester group, an amide group, and a sulfonyl group;
• A is the same or different at each occurrence and represents —COOM, —SO3M, or —OSO3M, wherein M is H, a metal atom, NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group;
• the group represented by the formula:
• —Y—R6 is the same or different at each occurrence and represents
• a group represented by the formula:
• —R10—CO—R11,
• a group represented by the formula:
• —OCO—R10—CO—R11,
• a group represented by the formula:
• —COO—R10—CO—R11,
• a group represented by the formula:
• —OCO—R10—COO—R11,
• a group represented by the formula:
• —COO—R11,
• a group represented by the formula:
• —NR8CO—R10—CO—R11, or
• a group represented by the formula:
• —CONR8—R10—NR8CO—R11,
• wherein R8 is H or an organic group;
• R10 is an alkylene group;
• and R11 is an alkyl group optionally having a substituent;
• and
• any two of R3 to R5 optionally bind to each other to form a ring;
• and if —Y—R6 is —COO—R11, then X is a divalent linking group containing at least one selected from the group consisting of a carbonyl group, an ester group, an amide group, and a sulfonyl group.