POLYESTER RESIN, TONER INCLUDING POLYESTER RESIN, AND METHOD FOR PRODUCING POLYESTER RESIN

摘要

The purpose of the present invention is to provide a crosslinked polyester resin having a low-cost composition of environmentally-friendly raw materials with which it is possible to reduce the amount of bisphenol A derivative components used. A polyester resin including a component derived from a trivalent or higher acid and a component derived from a bisphenol A alkylene oxide adduct, including 0.01-0.35 mol of a component derived from bisphenol A alkylene oxide adduct per mol of total acid-derived components, and having a ratio of acid value (mg KOH/g) and hydroxyl value (mg KOH/g) of acid value:hydroxyl value = 1:3-1:26.