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Colored toner prepared by adopting mini-emulsion polymerization and ball-milling compounding and method

A technology of color toner and polyethylene wax emulsion, which is applied in instruments, developers, optics, etc., can solve the problems of easy leakage, weak combination of wax and resin, etc., and achieve simple process, narrow distribution, and uniform charge distribution Effect

Active Publication Date: 2017-10-10
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the combination of pigment, wax and resin is not firm and easy to leak, the purpose of the present invention is to provide a color toner and method prepared by miniemulsion polymerization and ball milling

Method used

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  • Colored toner prepared by adopting mini-emulsion polymerization and ball-milling compounding and method
  • Colored toner prepared by adopting mini-emulsion polymerization and ball-milling compounding and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Take 0.4 parts of organic pigment PY12, 2 parts of anionic polyethylene wax emulsion WE-7, and 0.3 parts of TX-100 into a beaker, and add 40 parts of deionized water, ultrasonic for 5 minutes, so that the pigment and polyethylene wax are evenly dispersed , and then transfer the mixed solution in the beaker to a ball mill tank filled with zirconia microspheres with a particle size of 1.2mm~1.6mm, and disperse for 8 hours by ball milling, wherein the mass ratio of zirconia microspheres to organic pigments is 100:1, ball mill speed is 580r / min;

[0046](2) Weigh 8 parts of styrene and 2 parts of butyl acrylate in a beaker, add 50 parts of deionized water, ultrasonically disperse for 10 minutes, add the stable and uniform dispersion obtained after ball milling in (1), and mix Continue to sonicate for 40 minutes, transfer the mixed solution after sonication into a four-necked flask heated by a water bath, dissolve 0.2 parts of the initiator KPS in 15 parts of deionized w...

Embodiment 2

[0050] (1) Add 0.8 parts of organic pigment PB15:3, 3 parts of cationic polyethylene wax emulsion WX-448, and 0.4 parts of OP-10 into a beaker, add 35 parts of deionized water, and ultrasonicate for 10 minutes to make the pigment and polyethylene wax Disperse evenly. Then the mixed solution in the beaker is transferred to a ball mill jar filled with zirconia microspheres with a particle size of 1.2 mm to 1.6 mm, and the ball mill is dispersed for 6 hours, wherein the mass ratio of zirconia microspheres to organic pigments is 50 : 1, the ball mill rotating speed is 580r / min;

[0051] (2) Weigh 7.5 parts of styrene, 2.5 parts of butyl acrylate, add 60 parts of deionized water, stir and disperse for 20 minutes while ultrasonicating, add the stable and uniform dispersion obtained after ball milling in (1), and mix Continue to sonicate for 30 minutes, transfer the mixed solution after sonication into a four-necked flask heated by a water bath, dissolve 0.3 parts of the initiator K...

Embodiment 3

[0055] (1) Add 0.2 parts of organic pigment PR122, 1 part of anionic polyethylene wax emulsion WE-1, and 0.2 parts of TX-100 into a beaker, add 40 parts of deionized water, and ultrasonically 8 minutes to disperse the pigment and polyethylene wax evenly , and then transfer the mixed solution in the beaker to a ball mill jar filled with zirconia microspheres with a particle size of 1.2 mm to 1.6 mm, and ball mill to disperse for 4 hours. Wherein, the mass ratio of zirconia microspheres and organic pigments is 150:1, and the ball mill rotating speed is 580r / min;

[0056] (2) Weigh 8.5 parts of styrene and 1.5 parts of butyl acrylate in a beaker, add 50 parts of deionized water, and ultrasonically disperse for 15 minutes, add the stable and uniform dispersion obtained after ball milling in (1), and mix Continue the ultrasonic time for 50 minutes, transfer the ultrasonic mixed solution into a four-necked flask heated by a water bath, dissolve 0.1 part of initiator KPS in 15 parts ...

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Abstract

The invention discloses a colored toner prepared by adopting mini-emulsion polymerization and ball-milling compounding and a method. The method comprises the following steps: adopting a mini-emulsion polymerization method to prepare core-shell compound emulsion particles of a resin coated pigment and polyethylene wax, wherein the particle sizes of the prepared compound emulsion particles are 100 to 200 nm; then, preparing composite particles with the particle sizes of 7 to 12 microns through an electrolyte agglomeration compound method, and then compounding a charge control agent onto the micron composite particles through mechanical milling. Charge stabilization is provided for monomer droplets by using a negative (positive) ionic type polyethylene wax emulsion, and the addition of an ionic type emulsifier is avoided, so that the technology is simpler; the charge control agent is compounded to the particle surface of the colored toner through the mechanical milling method, and the charge control agent is uniform in arrangement, simple in technology and simple in operation, so that the particle charges of the finally obtained colored toner is uniformly distributed.

Description

technical field [0001] The invention relates to a color toner used in color printers, copiers, facsimile machines and printing machines and a preparation method thereof. Background technique [0002] Toner is the main consumable for laser printing and electrostatic copying in the field of electronic imaging. It is synthesized from pigments, resins, additives, etc. through physical methods or chemical reactions. It is a high-tech product recognized worldwide. With the development of information technology and the popularization of office automation, the demand for automatic hard copy equipment such as copiers and laser printers has grown rapidly, which has driven the demand for toner. Toner is divided into black toner and color toner. Compared with ordinary black toner, color toner requires higher development resolution, better particle shape, smaller particle size, and higher charge and Therefore, the traditional physical melting pulverization method for preparing black ton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/097G03G9/08
CPCG03G9/0802G03G9/09708
Inventor 叶明泉丁永跃韩爱军陈昕朱炯张羽
Owner NANJING UNIV OF SCI & TECH
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