| abstract |
A binder resin for an electrostatic charge image developing toner capable of ensuring the chargeability and heat resistance necessary for the electrostatic charge developing toner and suppressing problems caused by coloring, by-products and unreacted substances. To provide. A metal element derived from a catalyst obtained by polycondensation reaction of a polycarboxylic acid and a polyol, wherein 3 mol% or more and less than 50 mol% of the polycarboxylic acid is represented by the formula (1) and / or the formula (2). The binder resin for an electrostatic charge image developing toner, wherein the content of is from 0 ppm to 10 ppm and the glass transition temperature is from 50 ° C. to 80 ° C. R 1 OOCA 1 m B 1 n A 1 l COOR 1 ′ (1) (A 1 : methylene group, B 1 : aromatic hydrocarbon residue, 1 ≦ m + l ≦ 12, 1 ≦ n ≦ 3, R 1 , R 1 ′ : hydrogen atom or monovalent hydrocarbon group) R 2 OOCA 2 q B 2 r A 2 p COOR 2 ′ (2) (A 2 : methylene group, B 2 : alicyclic hydrocarbon residue, 0 ≦ p ≦ 6, 0 ≦ q ≦ 6, 1 ≦ r ≦ 3, R 2 , R 2 ′ : hydrogen atom or monovalent hydrocarbon Base) [Selection figure] None |