| 摘要 |
A binder resin for an electrostatic image developing toner, obtained by polycondensation reaction of a polycarboxylic acid and a polyol, wherein the polycarboxylic acid comprises at least one of a compound represented by formula (1) and a compound represented by formula (2) in an amount of from 50 to 100 mol%, the polyol comprises a compound represented by formula (3) in an amount of from 50 to 100 mol%, and a content of a catalyst-originated metal element in the resin is 100 ppm or less:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 1 OOCA 1 m B 1 n A 1 l COOR 1' €ƒ€ƒ€ƒ€ƒ€ƒ(1)
(wherein A 1 is a methylene group, B 1 is an aromatic hydrocarbon group, R 1 and R 1' each is a hydrogen atom or a monovalent hydrocarbon group, 1‰¤m+l‰¤12, and 1‰¤n‰¤3);
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 2 OOCA 2 p B 2 q A 2 r COOR 2' €ƒ€ƒ€ƒ€ƒ€ƒ(2)
(wherein A 2 is a methylene group, B 2 is an alicyclic hydrocarbon group, R 2 and R 2' each is a hydrogen atom or a monovalent hydrocarbon group, 0‰¤p‰¤6, 0‰¤r‰¤6, and 1‰¤q‰¤3);
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ HOX h Y j X k OH€ƒ€ƒ€ƒ€ƒ€ƒ(3)
(wherein X is an alkylene oxide group, Y is a bisphenol structure group, 1‰¤h+k‰¤10, and 1‰¤j‰¤3). |
