Charge regulator and preparation method thereof, and carbon powder

Abstract

The invention discloses a charge regulator and a preparation method thereof, and carbon powder, solving the problems of poor compatibility of the traditional charge regulator and resin, poor dispersibility, lower charge number and complex preparation process. A coupling, complexing and cation exchange one-pot method is adopted, intermediates related in the steps directly carry out the next step reaction in the same pot without separation, thus the process is simplified, and a pyrazolone azoic compound iron complex charge regulator with excellent charge performance, no influence by environment, good compatibility with the resin and environment friendliness is obtained. The carbon powder prepared by the charge regulator can obtain a high-quality image which is not influenced by environment factors.

Description

technical field [0001] The invention relates to a charge regulator, a preparation method thereof, and a carbon powder for electrostatic image development containing the charge regulator. Background technique [0002] With the rapid development of electrostatic image development technology, the requirements for toner are getting higher and higher. As one of the important components of toner, the performance of the charge regulator directly affects the charging performance of toner, and then affects the image of electrostatic development. quality. In addition to having good charging characteristics, a charge regulator with excellent performance should also have good compatibility with the resin for carbon powder, that is, have good dispersion in the resin. If the charge regulator and the resin are not well compatible, resulting in uneven dispersion or unstable dispersion performance, it will seriously affect the charging speed, charging performance and stability of the toner,...

AI Technical Summary

Problems solved by technology

The environmental stability of the toner prepared by using this kind of charge regulator has been significantly improved, and the image quality of the electrostatic image of the toner has also been improved, but due to the low charge of the toner, the desired effect has not been achieved.

And the azo-type metal complex charge regulator usually adopts diazo and separation after coupling reaction, and the obtained intermediate needs to be separated after complexation reaction, and then the method of cation conversion is carried out. The preparation process is complicated, the production cycle is long, and the improvement cost of production

Even if some processes use the one-pot method, the raw materials used are different and the process conditions are also different, and the charge regulator NH 4 + The ratio of the proportion required to reach more than 60%, the preparation conditions are relatively harsh, the cost is relatively high, and the stability of the preparation is not good

Moreover, this type of charge regulator is a blocky solid after drying, and the particle size is relatively coarse. It is difficult to achieve the desired particle size by simple mechanical crushing. It must be jet-jet crushed or expensive mechanical treatment to meet the particle size requirements, thereby further improving cost of production

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