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Colored toner prepared through in-situ miniemulsion polymerization and electrostatic agglomeration and preparation method thereof

An in-situ mini-emulsion and electrostatic coagulation technology, applied in electrographics, instruments, developers, etc., can solve the problems of easy leakage and weak bonding, and achieve the effect of simple process

Inactive Publication Date: 2014-12-31
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a color toner prepared by in-situ miniemulsion polymerization and electrostatic coagulation and its method, so as to solve the problem that the combination of pigment, wax and resin is not firm and easy to leak

Method used

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  • Colored toner prepared through in-situ miniemulsion polymerization and electrostatic agglomeration and preparation method thereof
  • Colored toner prepared through in-situ miniemulsion polymerization and electrostatic agglomeration and preparation method thereof
  • Colored toner prepared through in-situ miniemulsion polymerization and electrostatic agglomeration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 70 parts of styrene, 30 parts of butyl acrylate, 7 parts of absolute ethanol, 5 parts of paraffin, yellow pigment PY 17 4 parts, 0.3 parts of charge regulator, 1000 parts of deionized water, and weigh two parts of the above components;

[0048] And 1.5 parts of potassium persulfate, 0.5 parts of azobisisobutylammonium hydrochloride, 1 part of anionic emulsifier SDS, 5 parts of nonionic emulsifier TX-1000, cetyltrimethylammonium bromide CTAB 10 parts, hydrophobic nano-SiO 2 2 parts, 50 parts of 4% silicone defoamer XP-130A solution;

[0049] Dissolve the charge regulator in absolute ethanol, disperse the yellow PY17 pigment in the mixed monomer of styrene and butyl acrylate under ultrasonic, add the ethanol solution of the charge regulator into the mixed monomer under ultrasonic, and continue the ultrasonic dispersion for 10 minutes, Obtain uniformly mixed material A;

[0050] Put the mixture A in a water bath at 65°C, add the paraffin to the mixture A, wait until the...

Embodiment example 2

[0058] 80 parts of styrene, 20 parts of butyl acrylate, 3 parts of absolute ethanol, 15 parts of paraffin, 36 parts of blue pigment PB15, 0.1 part of charge regulator, 800 parts of deionized water, weigh two parts of the above components;

[0059] And 2.5 parts of potassium persulfate, 1.5 parts of azobisisobutyl rice hydrochloride, 2 parts of anionic emulsifier SDS, 6 parts of nonionic emulsifier TX-100, 7 parts of cationic emulsifier DTAB, hydrophobic nano-SiO 2 5 parts, 80 parts of 4% silicone defoamer XP-130A;

[0060] Dissolve the charge regulator in absolute ethanol, disperse the blue PB15:3 pigment in the mixed monomer of styrene and butyl acrylate under ultrasonic, add the ethanol solution of the charge regulator into the mixed monomer under ultrasonic, and continue the ultrasonic dispersion 15min, the material A that mixes homogeneously is obtained;

[0061] Put the mixture A in a water bath at 65°C, add the paraffin to the mixture A, wait until the paraffin is compl...

Embodiment 3

[0068] 75 parts of styrene, 25 parts of butyl acrylate, 10 parts of absolute ethanol, 10 parts of paraffin, red pigment PR 122 8 parts, 0.5 parts of charge regulator, 1200 parts of deionized water, and weigh two parts of the above components;

[0069] 1 part of ammonium persulfate, 1 part of azobisisobutyl rice hydrochloride, 2 parts of anionic emulsifier SDS, 8 parts of nonionic emulsifier, 5 parts of cationic emulsifier DTAB, hydrophobic nano-SiO 2 3 parts, 100 parts of 4% silicone defoamer XP-130A solution;

[0070] Dissolve the charge regulator in absolute ethanol, disperse the red PR122 pigment in the mixed monomer of styrene and butyl acrylate under ultrasonic, add the ethanol solution of the charge regulator into the mixed monomer under ultrasonic, continue ultrasonic dispersion for 20min, and prepare Obtain mixed material A;

[0071] Put the mixture A in a water bath at 65°C, add the paraffin to the mixture A, wait until the paraffin is completely melted, stir to obt...

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Abstract

The invention discloses colored toner prepared through in-situ miniemulsion polymerization and electrostatic agglomeration and a preparation method thereof. The preparation method comprises the following steps: selecting a surfactant and an initiator with different charges, through the in-situ miniemulsion polymerization, preparing two composite colored latex particles having the particle size of 50-160 nanometers and opposite surface charges and comprising resin-coated pigment, wax and a charge regulator; mixing the two colored latexes with the opposite surface charges according to a certain ratio, wherein the latex particles flocculate due to the opposite charges, and finally obtaining composite colored toner particles with the particle size of 5-10 microns by changing the reaction temperature, the stirring speed, the stirring time and the like. According to the preparation method, by polymerizing the resin-coated pigment, the wax and other functional components, the problems of leakage and non-uniform distribution of the wax and the pigment and the like are solved; through agglomeration of the two colored latexes with the opposite surface charges, the impurity problem caused by addition of a flocculant during ordinary emulsion agglomeration is solved; the prepared composite colored toner particles have the advantages of uniform component distribution, controllable particle size, relatively good shape, few impurities and the like.

Description

technical field [0001] The invention relates to a color toner used in color printers, copiers, fax machines and printing machines and a preparation method thereof, in particular to a color toner prepared by in-situ microemulsion polymerization and electrostatic coagulation and a method thereof. Background technique [0002] In recent years, with the development of office automation and the popularization of color printing and copying, the market demand for color toner as consumables for color printing, copying, faxing and printing is huge and is developing rapidly. The traditional fusion pulverization toner preparation technology can no longer meet the high performance and high resolution requirements of color printing. At present, the color toners used in color printers, copiers, fax machines and printing machines are polymer powders synthesized by chemical methods. Polymerization method color toner is mainly composed of resin, pigment, wax, charging agent and additives. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/097G03G9/09
Inventor 叶明泉李建韩爱军陈昕刘春兰
Owner NANJING UNIV OF SCI & TECH
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