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Polyester composition and manufacturing method thereof, bonding resin and color matching agent for electrostatic charge image development

A manufacturing method and composition technology, applied in the directions of developer, electrography, optics, etc., can solve problems such as complex production process, and achieve the effects of simple process, improved hydrolysis resistance, and suppression of image density reduction

Active Publication Date: 2014-12-24
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The polyester resins for toners disclosed in the above patent documents 1 to 3 are all formed by blending or copolymerizing two or more resins, and the production process is complicated.

Method used

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  • Polyester composition and manufacturing method thereof, bonding resin and color matching agent for electrostatic charge image development
  • Polyester composition and manufacturing method thereof, bonding resin and color matching agent for electrostatic charge image development
  • Polyester composition and manufacturing method thereof, bonding resin and color matching agent for electrostatic charge image development

Examples

Experimental program
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preparation example Construction

[0078] 1. Preparation of Colorant Dispersion

[0079] 75.5 parts of deionized water and 4.5 parts of sodium dodecyl diphenyl ether disulfonate (trade name: DOWFAX 2A1) were added to the circulation tank of SC MILL (manufacturer: Mitsui Mining Co., Ltd.), and after mixing and dissolving Add 20.0 parts of carbon black, and use SC MILL to disperse to obtain a 20 wt% colorant dispersion with an average primary particle size of 120 nm measured on a laser particle size analyzer (model: LS230, manufacturer: Beckman Coulter Inc.).

[0080] 2. Preparation of release agent dispersion

[0081] 74.0 parts of deionized water and 4.0 parts of sodium lauryl polyoxyethylene ether sulfate (trade name: EMAL E-27C) were added to a CLEAR MIX (manufacturer: M Technique Co., Ltd.) circulation tank with a circulation device After mixing and dissolving, heat to 90°C, add 22.0 parts of behenyl behenate, and use CLEAR MIX to disperse to obtain a 22wt% release agent dispersion with an average primary p...

Embodiment 1～8

[0096] The above "toners 1 to 8" and the carrier (volume median diameter D 50 : 36μm, saturation magnetization: 60emu / g, volume resistivity: 1×10 13 Ω·cm) were mixed as follows to produce two-component "developers 1-8". 92 parts of carrier and 8 parts of toner were mixed in a mixer for 10 minutes to prepare a two-component developer; at the same time, 85 parts of toner and 15 parts of carrier were mixed to prepare a supplementary developer.

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Abstract

The invention provides a polyester composition and a manufacturing method thereof, a bonding resin and a color matching agent for electrostatic charge image development. The manufacturing method of a polyester composition comprises the following steps: by taking acidic components, namely terephthalic acid and isophthalic acid, and alcohol components, namely glycol and 1,4-cyclohexanedimethanol as raw materials, sequentially performing two-stage esterification in the presence of a catalyst, and performing three-stage condensation polymerization reaction in the presence of the catalyst. In the acidic components, the content of terephthalic acid is 80.0-94.0mol%, and the content of isophthalic acid is 6.0-20.0mol%, in the total amount of alcohol components, the content of glycol is 70.0-90.0mol%, and the content of 1,4-cyclohexanedimethanol is 10.0-30.0mol%. The manufactured polyester composition is used as the bonding resin for the color matching agent, the reduction of image density under high-temperature and high-humidity environment can be inhibited, and the fixation and heat-proof offset properties are excellent.

Description

technical field [0001] The present invention relates to a polyester composition for toner, a method for producing the same, a binder resin, and a toner for electrostatic image development. Background technique [0002] With the further increase in speed and energy saving of electrostatic image forming devices, compared with the past, due to the shortening of the fixing time in the fixing process and the lowering of the equipment heating temperature, it is necessary to reduce the viscosity of the toner to maintain the same fixing firmness. The softening point of the binder resin, and with the decrease of the softening point of the binder resin, thermal offset is prone to occur, and at the same time, with the decrease of the glass transition temperature of the binder resin, the phenomenon of poor preservation of toner aggregation and agglomeration is prone to occur, so in the past Styrene acrylic resin is widely used as binder resin toner, which can no longer meet the high-spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/199C08G63/78G03G9/08G03G9/087
Inventor 朱双全黎文部
Owner HUBEI DINGLONG CO LTD
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