Polyester resin composition for toner and toner
A polyester resin and toner technology, applied in the development agent, electrography, optics, etc., can solve the problem of poor low-temperature fixability, and achieve the effect of good gloss and excellent low-temperature fixability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
manufacture example 1
[0202] Production example 1 Production example of linear polyester resin (A)
[0203] The monomer components of the feeding composition shown in Table 1 and 2000 ppm of antimony trioxide relative to the total acid components were charged into a reaction vessel equipped with a distillation column. Next, keep the rotation speed of the stirring blade in the reaction vessel at 120 rpm, start to raise the temperature, and heat until the temperature in the reaction system reaches 265° C., and maintain this temperature. Water was distilled out from the reaction system, and about 7 hours after the start of the esterification reaction, water was no longer distilled out, and the reaction ended. Next, the temperature of the reaction system was lowered and kept at 285° C., the pressure of the reaction container was reduced for 40 minutes to make the vacuum degree 1.0 mmHg, and the polycondensation reaction was carried out while distilling the diol component from the reaction system. The ...
manufacture example 2
[0207] Production example 2 Production example of linear polyester resin (B)
[0208] Monomer components, additives, and 1000 ppm of dibutyltin oxide with respect to the total acid components of the feed composition shown in Table 2 were charged into a reaction vessel equipped with a distillation column. Next, keep the rotation speed of the stirring blade in the reaction vessel at 120 rpm, start to raise the temperature, and heat until the temperature in the reaction system reaches 260° C., and maintain this temperature. Water was distilled out from the reaction system, and about 8 hours after the start of the esterification reaction, water was no longer distilled out, and the reaction ended. Next, lower the temperature of the reaction system and keep it at 235° C., depressurize the reaction vessel for 40 minutes to make the vacuum degree reach 1.0 mmHg, and carry out the condensation reaction while distilling the diol component from the reaction system. The viscosity of the ...
Embodiment 1
[0213] Using the resins obtained as described above, tonerization was performed, respectively. In the preparation of the toner, 5 parts by mass of a quinacridone pigment (E02 produced by Clariant Co., Ltd.) was used together with the linear polyester resin (A) and the linear polyester resin (B) in the amounts shown in Table 3, Brazil 5 parts by mass of palm wax (manufactured by Toyo Petrolaid Co., Ltd.) and 2 parts by mass of negative charge control agent (manufactured by Orionto Chemical Co., Ltd. E-84) were mixed in a Henschel mixer for 30 minutes. Next, the obtained mixture was melt-kneaded twice using a biaxial kneader. Melt kneading was carried out at an internal temperature of 180°C. After kneading, it was cooled to obtain toner agglomerates, which were finely pulverized by an airflow pulverizer, and the particle size of the toner was adjusted to 5 μm by a granulator. To the obtained fine powder, 0.25% of silicon (R-972 manufactured by Nippon Aerosil Co., Ltd.) was add...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More