| 摘要 |
The invention provides an amorphous polyester resin that can sufficiently achieve the reciprocal performance properties of hot offset resistance and cold offset resistance, which is a major issue for a toner for electrostatic image development, while allowing adequate blocking resistance to be obtained, as well as a binder resin for toner for electrostatic image development, and an amorphous polyester resin production method, the amorphous polyester resin being obtained by reaction between a polybasic carboxylic acid compound and a polyhydric alcohol, wherein the polybasic carboxylic acid compound comprises (a) the reaction product between an aromatic polybasic carboxylic acid compound and a C2-4 glycol at 60 mol% or greater based on the total amount of the polybasic carboxylic acid compound, and the amorphous polyester resin has a glass transition point of 55°C to 75°C and a weight-average molecular weight of 10,000 to 50,000. |
