BINDER RESIN COMPOSITION FOR TONER

To provide a binder resin composition for toner excellent in moisture absorption resistance under a high-temperature and high-humidity environment, charge rising property, and storage stability, and a toner for electrostatic charge image development containing the binder resin composition.SOLUTION: A binder resin composition for toner containing a polyester resin A having a constitutional unit derived from an alcohol component including an alkylene oxide adduct of bisphenol A and a constitutional unit derived from a carboxylic acid component including an acid modified product A of an amorphous α-olefin polymer having 4 to 18 carbon atoms, a binder resin composition for toner containing a polyester resin A that is a polycondensate of an alcohol component including an alkylene oxide adduct of bisphenol A and a carboxylic acid component including an acid modified product A of an amorphous α-olefin polymer having 4 to 18 carbon atoms, and a toner for electrostatic charge image development containing these binder resin compositions.SELECTED DRAWING: None 【課題】高温高湿環境下での耐吸湿性、帯電立ち上がり性、及び保存性に優れるトナー用結着樹脂組成物及び該結着樹脂組成物を含有した静電荷像現像用トナーに関すること。【解決手段】ビスフェノールＡのアルキレンオキサイド付加物を含むアルコール成分由来の構成単位と、非晶質である炭素数4以上18以下のα−オレフィン重合体の酸変性物Ａを含むカルボン酸成分由来の構成単位とを有するポリエステル樹脂Ａを含有する、トナー用結着樹脂組成物、ビスフェノールＡのアルキレンオキサイド付加物を含むアルコール成分と、非晶質である炭素数4以上18以下のα−オレフィン重合体の酸変性物Ａを含むカルボン酸成分との重縮合物であるポリエステル樹脂Ａを含有する、トナー用結着樹脂組成物、及びこれらの該結着樹脂組成物を含有した静電荷像現像用トナー。【選択図】なし