Method for producing a non-crystalline polyester resin, the electrostatic image developing toner binder resin and non-crystalline polyester resin

摘要

As it is compatible the efficiency which as for this invention, you call resistance hot offset characteristic and the resistance cold offset characteristic which are serious topic in the toner for electrostatic charge image development is contrary sufficiently, reacting with the polyvalent carboxylic acid compound and the polyatomic alcohol the fact that production method of the non crystal characteristic polyester resin, the binding resin, and the non crystal characteristic polyester resin whose for the toner of electrostatic charge image development it is possible to obtain sufficient resistance blocking characteristic, is offered as a purpose, being the non crystal characteristic polyester resin which becomes, as for the above-mentioned polyvalent carboxylic acid compound, (a) the aromatic polyvalent carboxylic acid compound and carbon count 2- 60 mols % as for the or more implication and above-mentioned non crystal characteristic polyester resin, the glass transition point is 55 - the 75 the reactant of the glycol of 4, the entire quantity of the above-mentioned polyvalent carboxylic acid compound as a standard, the non crystal characteristic polyester resin where the weight average molecular weight is, 10,000 - 50,000 possesses specified storage modulus of elasticity G'no behavior at the time of dynamic visco-elastic measuring, is offered.