JP2018059963A5 - - Google Patents

Claims (8)

Containing a composition comprising a resin having at least a polyester moiety,
The composition is obtained by a method comprising the step of obtaining a polyester moiety by polycondensation of an alcohol component and a carboxylic acid component,
Polyhydroxy represented by the following formula (1) of 0.001 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass in total of all the monomer components from the time when the reaction rate of the alcohol component is 70% or more in the polycondensation. An electrophotographic toner to which an amine compound is added.

Wherein, R ¹ represents a carbon number 1 to 5 hydroxyalkyl group, R ² is a hydrogen atom, 1 to 6 alkyl group carbon atoms, or a number of 1 to 5 of hydroxy alkyl group having a carbon R ³ and R ⁴ each represent an alkanediyl group having 1 to 5 carbon atoms. R ³ and R ⁴ may be the same or different. ] The polyhydroxy amine compound is 2 - amino-2-hydroxymethyl-1, 3-propanediol, and 2-amino-2-hydroxyethyl-1, is at least one selected from 3-propanediol, claim The electrophotographic toner according to 1.   The electrophotographic toner according to claim 1, wherein the polyhydroxyamine compound is 2-amino-2-hydroxymethyl-1,3-propanediol.   The toner for electrophotography according to any one of claims 1 to 3, wherein a temperature at which the polyhydroxyamine compound is added is 130 ° C or more and a temperature 20 ° C lower than the boiling point of the polyhydroxyamine compound.   The temperature is maintained for a period of 0.5 hours to 3.0 hours at a temperature not less than 130 ° C. and not more than 20 ° C. lower than the boiling point of the polyhydroxyamine compound after the addition of the whole amount of the polyhydroxyamine compound. The toner for electrophotography as described in.   The electrophotographic toner according to any one of claims 1 to 5, wherein the reaction rate of the alcohol component is 85% or more. Containing a composition comprising a resin having at least a polyester moiety,
The composition is obtained by a method comprising the step of obtaining a polyester moiety by polycondensation of an alcohol component and a carboxylic acid component,
Polyhydroxy represented by the following formula (1) of 0.001 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass in total of all the monomer components from the time when the reaction rate of the alcohol component is 70% or more in the polycondensation. Binder resin composition for electrophotographic toner which adds an amine compound.

Wherein, R ¹ represents a carbon number 1 to 5 hydroxyalkyl group, R ² is a hydrogen atom, 1 to 6 alkyl group carbon atoms, or a number of 1 to 5 of hydroxy alkyl group having a carbon R ³ and R ⁴ each represent an alkanediyl group having 1 to 5 carbon atoms. R ³ and R ⁴ may be the same or different. ] Including a step of obtaining a polyester portion by polycondensation of an alcohol component and a carboxylic acid component,
Polyhydroxy represented by the following formula (1) of 0.001 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass in total of all the monomer components from the time when the reaction rate of the alcohol component is 70% or more in the polycondensation. A method of producing an electrophotographic toner, which comprises adding an amine compound.

Wherein, R ¹ represents a carbon number 1 to 5 hydroxyalkyl group, R ² is a hydrogen atom, 1 to 6 alkyl group carbon atoms, or a number of 1 to 5 of hydroxy alkyl group having a carbon R ³ and R ⁴ each represent an alkanediyl group having 1 to 5 carbon atoms. R ³ and R ⁴ may be the same or different. ]