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Salicylic acid series charge regulator dispersoid and preparation method thereof and carbon powder

A charge regulator and dispersion technology, applied in the field of carbon powder, can solve the problems of unstable charging property of carbon powder and uneven distribution of the charge regulator, and achieve the improvement of insufficient charge, less bottom ash, and wide color gamut. Effect

Active Publication Date: 2012-09-26
HUBEI DINGLONG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is in order to solve the problems of the technologies described above, to provide a salicylic acid series charge regulator dispersion and the toner for electrophotography prepared by adopting the dispersion, which solves the problem of unstable charging of carbon powder in emulsion polymerization, The problem of uneven distribution of charge regulator in polymerized toner

Method used

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  • Salicylic acid series charge regulator dispersoid and preparation method thereof and carbon powder
  • Salicylic acid series charge regulator dispersoid and preparation method thereof and carbon powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0024] Mechanically mix 40 parts by weight of charge regulator DL-N23 powder, 2 parts by weight of sodium lauryl sulfate as a dispersant, 0.8 parts by weight of cyclohexanol as a dispersing aid, and 1957.5 parts by weight of water at a line speed of 10 m / s 60 minutes, then the resulting mixture was ground on a grinder for 90 minutes at a speed of 22000 rpm to obtain the charge regulator dispersion (2) of the present invention, and the average particle diameter D of the particles was measured by a Coulter particle size tester. 80nm.

Embodiment 3

[0026] 500 parts by weight of charge regulator DL-N24 powder, 100 parts by weight of dispersant sodium dodecyl diphenyl ether disulfonate, 75 parts by weight of dispersing aid butanone and 1325 parts by weight of water at a linear speed of 20 m / s Carry out mechanical mixing for 30 minutes, then grind the resulting mixture on a grinder for 120 minutes at a speed of 18,000 rpm to obtain the charge modifier dispersion (3) of the present invention, and measure the average particle size of the particles by a Coulter particle size tester. Particle size D = 130 nm.

[0027] Charge Modulator Dispersion Example 4

[0028] 200 parts by weight of charge regulator DL-N24 powder, 10 parts by weight of dispersant sodium lauryl polyoxyethylene ether sulfate, 4 parts by weight of dispersing aid butanol and 1700 parts by weight of water at a line speed of 40 m / s Perform mechanical mixing for 30 minutes, then grind the resulting mixture on a grinder for 240 minutes at a speed of 5000 rpm to ob...

Embodiment 7

[0034] 200 parts by weight of charge regulator DL-N29 powder, 40 parts by weight of dispersant polyvinylpyrrolidone and 20 parts by weight of sodium dodecyl diphenyl ether disulfonate, 40 parts by weight of dispersing aid ethyl acetate and 1700 parts of water Under the linear speed of 25 m / s, carry out mechanical mixing for 45 minutes, then the resulting mixture is ground on the mill for 180 minutes at a speed of 12,000 revolutions / minutes to obtain the charge regulator dispersion (7) of the present invention, passed through Coulter particles The average particle diameter D=108nm of particle measured by diameter tester.

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Abstract

The invention relates to salicylic acid series charge regulator dispersoid, a preparation method thereof and carbon powder prepared by adopting the dispersoid, solving the problems that the charge of carbon powder is unstable and the charge regulator is not distributed evenly in the polymerized carbon powder when preparing carbon powder by the current method of emulsion polymerization, ensuring that the prepared carbon powder has good charge performance and is not affected by continuous use for a long time, temperature and humidity, and high definition graphics can be obtained stably in a long time.

Description

technical field [0001] The invention relates to a dispersion of a salicylic acid series charge regulator, a preparation method thereof, and a carbon powder prepared by using the dispersion. Background technique [0002] Toner for electrophotography, also known as toner, has two main manufacturing methods: physical method and chemical method. The physical method is the traditional pulverization method, and the chemical method mainly includes suspension polymerization method and emulsion polymerization method. Among them, polymerized toner is produced by polymerization, with small particle size (6-8μm), uniform distribution, toner particle shape close to spherical, high resolution during printing, good gloss, and much lower waste powder rate. , and low energy consumption, CO 2 The emission is only equivalent to 60% of the traditional physical method of toner. Therefore, the color powder of the chemical method has the advantages of higher printing quality, richer colors and m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/097
Inventor 朱顺全肖桂林
Owner HUBEI DINGLONG CO LTD
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