Fluororesin, fluororesin particles, and methods for producing these

Abstract

Resin particles including a unit of formula (1) and having a volume average particle diameter 5 to 2000 μm, a method for producing, and a fluororesin comprising a unit of formula (1) and having a weight average molecular weight 5×104 to 3×105, and a yellow index of a heat-melted molded product (thickness 3 mm) after 24 h at 280° C. of 6 or less, wherein Rf1, Rf2, Rf3, and Rf4 are independently a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, or a cyclic perfluoroalkyl group having 3 to 7 carbon atoms, and the perfluoroalkyl group may have an ethereal oxygen atom, and Rf1, Rf2, Rf3, and Rf4 may be linked to form a ring having 4 to 8 or carbon atoms.

Dependencies are inferred from the claim text.