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Styrene-acrylic resin for toner and preparation method thereof

A technology for styrene-acrylic resin and toner, applied in the field of styrene-acrylic resin for toner and its preparation, can solve the problems of inability to effectively control polymer properties, uncontrollable molecular weight of polymer resin, high solvent recovery cost, and achieve low odor, The effect of low water absorption and short reaction period

Inactive Publication Date: 2016-11-09
广州合成材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production method of domestic styrene-acrylic resin is mainly solution polymerization. During the polymerization process, the molecular weight of the polymer resin is uncontrollable, the polymerization is unstable, and the performance of the polymer cannot be effectively controlled. At the same time, there are high solvent recovery costs and strong product odor. At the same time, it is easy to cause environmental pollution and other disadvantages

Method used

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  • Styrene-acrylic resin for toner and preparation method thereof
  • Styrene-acrylic resin for toner and preparation method thereof
  • Styrene-acrylic resin for toner and preparation method thereof

Examples

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Effect test

preparation example Construction

[0058] The preparation method of above-mentioned styrene-acrylic resin for toner comprises the following steps:

[0059] 1) Mix and stir 0.5-2 parts of emulsifier and 20-50 parts of water evenly, then add 0-5 parts of pH regulator, 5-15 parts of hard monomer and 1-5 parts of soft monomer, stir well to obtain seeds pre-emulsion;

[0060] 2) Mix and stir 1-4 parts of emulsifier and 40-120 parts of water evenly, then add 55-90 parts of hard monomer, 1-20 parts of soft monomer, 0.5-10 parts of functional monomer and 0.1-2 parts Chain transfer agent, stir evenly to obtain pre-emulsion;

[0061] 3) Mix and stir 0.2-0.5 parts of initiator and 5-15 parts of water evenly, then add it to the seed pre-emulsion in step 1), fully react to obtain the seed emulsion;

[0062] 4) Add the pre-emulsion in step 2) to the seed emulsion in step 3), add 0.2-0.5 parts of initiator and 10-20 parts of water, and fully react to obtain a styrene-acrylic emulsion;

[0063] 5) The styrene-acrylic emulsi...

Embodiment 1

[0068] A raw material composition of styrene-acrylic resin for toner is as follows (parts by mass):

[0069] Styrene: 95 parts;

[0070] Butyl acrylate: 15 parts;

[0071] Isooctyl acrylate: 5 parts;

[0072] Methacrylic acid: 0.5 parts;

[0073] Dodecyl mercaptan: 0.8 parts;

[0074]Allyloxy nonylphenol propanol polyoxyethylene (10) ether ammonium sulfate: 3 parts;

[0075] Potassium persulfate: 0.7 parts;

[0076] Sodium bicarbonate: 1 part;

[0077] Water: 150 parts.

[0078] The preparation method comprises the following steps:

[0079] 1) Dissolve 1 part of allyloxy nonylphenol propanol polyoxyethylene (10) ether ammonium sulfate in 30 parts of water, stir evenly to obtain an aqueous emulsifier solution, then add 1 part of sodium bicarbonate, 12 parts of styrene and 2 parts of butyl acrylate, stirred at a low speed for 30 minutes to obtain a seed pre-emulsion;

[0080] 2) Dissolve 2 parts of allyloxy nonylphenol propanol polyoxyethylene (10) ether ammonium sulfat...

Embodiment 2

[0088] A raw material composition of styrene-acrylic resin for toner is as follows (parts by mass):

[0089] Styrene: 81 parts;

[0090] Butyl acrylate: 13.5 parts;

[0091] Isooctyl acrylate: 5 parts;

[0092] Methacrylic acid: 0.5 parts;

[0093] Dodecyl mercaptan: 0.8 part;

[0094] Allyloxy nonylphenol propanol polyoxyethylene (10) ether ammonium sulfate: 2 parts;

[0095] Potassium persulfate: 0.7 parts;

[0096] Sodium bicarbonate: 2 parts;

[0097] Water: 140 parts.

[0098] The preparation method comprises the following steps:

[0099] 1) Dissolve 1 part of allyloxynonylphenol propanol polyoxyethylene (10) ether ammonium sulfate in 30 parts of water, stir evenly to obtain an aqueous emulsifier solution, then add 2 parts of sodium bicarbonate, 8 parts of styrene and 2 parts of butyl acrylate, stirred at a low speed for 30 minutes to obtain a seed pre-emulsion;

[0100] 2) Dissolve 1 part of allyloxy nonylphenol propanol polyoxyethylene (10) ether ammonium sulfa...

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Abstract

The invention discloses a styrene-acrylic resin for toner and a preparation method thereof. The styrene-acrylic resin for toner is prepared from a hard monomer, a soft monomer, a functional monomer, a chain transfer agent, an emulsifier, an initiator, a pH regulator and water. The preparation method comprises the steps of: 1) preparation of a seed pre-emulsion; 2) preparation of a pre-emulsion; 3) preparation of a seed emulsion; 4) preparation of a styrene-acrylic emulsion; and 5) demulsification and spray drying of the styrene-acrylic emulsion, thus obtaining the styrene-acrylic resin for toner. The preparation method provided by the invention has the advantages of simple preparation process, short reaction period, mild reaction conditions, no need of special instrument and equipment, and the reaction medium is water, which has small odor, and is economical and environment-friendly. The styrene-acrylic resin for toner provided by the invention can achieve regulation of molecular weight, glass transition temperature, softening point and other properties according to actual needs, has low water absorption, good thermal stability and excellent performance, and is economical and practical.

Description

technical field [0001] The invention relates to a styrene-acrylic resin for toner and a preparation method thereof. Background technique [0002] Toner, also known as carbon powder, is a substance used in printer toner cartridges for printing and imaging. It is mainly composed of resin, carbon black, charge agent, paraffin and magnetic materials. [0003] In recent years, the global toner market has shown a steady growth trend, and the toner market has been monopolized by Europe, the United States and Japan. Domestic research results and researchers on toner are few, and there is no core technology of its own, and it is very passive. Therefore, there is an urgent need to develop high-performance, cost-effective toner. The main component of the toner is resin, and its dosage accounts for 70% to 90% of the total weight of the toner. Commonly used toner resins mainly include styrene-acrylic resins, polyester resins, and epoxy resins. Styrene-acrylic resin has good weather re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F220/14C08F212/12C08F220/28C08F2/30C08F2/28
CPCC08F2/28C08F2/30C08F212/08C08F220/14C08F220/1804C08F220/1808C08F220/281C08F212/12C08F220/18C08F220/06C08F220/1802
Inventor 敖晓娟王庆王浩江杨育农李世昌
Owner 广州合成材料研究院有限公司
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