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Copolymer resin for powdered ink and preparation method thereof

A technology of copolymer resin and resin, which is applied in the field of copolymer resin products for toner and its preparation, can solve the problems of limited popularization, high cost, difficulty in meeting application requirements, etc., and achieve the effect of easy industrialization and wide molecular weight distribution

Inactive Publication Date: 2013-10-09
张家港威迪森化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above that in order to meet the requirements of different customers for toner and to take into account the comprehensive requirements of blackness and fixing, the wider the molecular weight distribution of the copolymer resin, the better, but because a single classic conventional production method is difficult to meet the application requirements
It has also been developed to expand its molecular weight distribution through the method of "mixing polymerization reaction", but due to the high cost of complex technology, the promotion is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Selection of raw materials and ratio:

[0026] Xylene 100Kg is solvent;

[0027] 60Kg of styrene, 30Kg of butyl acrylate, and 10Kg of butyl methacrylate are monomers;

[0028] Di-tert-butyl peroxide 2Kg is the initiator;

[0029] Divinylbenzene 2.5Kg is a crosslinking agent; uniformly mixed into a reaction solution;

[0030] 2) Selection of reaction conditions: process conditions of 4 hours for dropping, 4 hours for holding time, and 3 hours for desolventization; A-1 resin was synthesized according to the above-mentioned traditional classic solution method, and its MI value was 16g / 10min.

Embodiment 2

[0032] 1) Selection of raw materials and ratio:

[0033] Xylene 80Kg is solvent;

[0034] Styrene 65Kg, butyl acrylate 25Kg, butyl methacrylate 10Kg as monomers;

[0035] Di-tert-butyl peroxide 2Kg is the initiator;

[0036] Divinylbenzene 3.0Kg is a crosslinking agent; uniformly mixed into a reaction solution;

[0037] 2) Selection of reaction conditions: process conditions of 4 hours for dropping, 4 hours for holding time, and about 3 hours for desolventization; A-2 resin was synthesized according to the above-mentioned traditional classic solution method, and its MI value was 10g / 10min.

Embodiment 3

[0039] 1) Selection of raw materials and ratio:

[0040] 0.75Kg of polyvinyl alcohol and 300Kg of demineralized water are made into a suspension;

[0041] 68Kg of styrene and 32Kg of butyl acrylate are monomers;

[0042] Benzoyl peroxide 2Kg is the initiator;

[0043] Divinylbenzene 3.0Kg is a crosslinking agent; uniformly mixed into a reaction solution;

[0044] 2) Selection of reaction conditions: Reaction time of 10 hours, reaction temperature of 75 degrees; B-1 resin was synthesized according to the above-mentioned traditional classic suspension method, and its MI value was 2.6g / 10min. .

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Abstract

The invention discloses a copolymer resin for powdered ink. The copolymer resin is prepared from the following components by weight: 5-85% of resin A, 5-85% of resin B and 1-10% of functional resin C, wherein the sum of weight percent of the three resins is 100%. The preparation method comprises the steps of adding the resin A, the resin B and the functional resin C into a solid blender mixer based on proportion, mixing the materials until the MI value is stable, and discharging within the range from 4.0 to 8.0g / 10min to obtain the finished product of copolymer resin for powdered ink. According to the invention, resin with high MI value is synthesized by using a solution method, and resin with low MI value is synthesized by using a suspension method, so that the molecular weight distribution range of the copolymer resin is shifted towards the higher direction, and the copolymer resin for powdered ink prepared by combining the solution method and the suspension method is finally obtained. The molecular weight distribution of the copolymer resin is wider, the requirements for different types of powdered ink are met, the comprehensive requirements on blackening and fixing are taken into account, and industrialization is realized easily.

Description

technical field [0001] The invention belongs to the field of copolymer resin for toner, and in particular relates to a copolymer resin product for toner prepared by combining a solution method and a suspension method and a preparation method thereof. Background technique [0002] Currently on the market, commonly used production techniques for toner copolymer resins generally include: solution method and suspension method. [0003] Generally speaking, the average molecular weight of the resin produced by the solution method is relatively low, and its product is a fully soluble type, that is, its insoluble matter percentage is 0-5%, the MI value is relatively large, and its molecular weight distribution is relatively low. end. [0004] The average molecular weight of the resin produced by the suspension method is relatively high, the MI value is relatively small, and its product is partially insoluble, that is, its insoluble matter percentage is 10-60%, and its molecular wei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/14C08F212/08C08F2/06C08F2/20G03G9/08
Inventor 范葆荃钱建平傅学敏叶斌江燕
Owner 张家港威迪森化学有限公司