| abstract |
PROBLEM TO BE SOLVED: To provide a toner binder excellent in transparency and heat-resistant storage stability. The active hydrogen compound (a) comprises a polyester resin (A) obtained by ring-opening polymerization of a cyclic ester (b), and the haze value of (A) is 0.1 to 40. A toner binder is used. Or a toner binder comprising a polyester resin (A) obtained by ring-opening polymerization of a cyclic ester (b) on an active hydrogen compound (a), wherein the light transmittance of (A) is 90 to 100% Is used. [Selection figure] None |