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A binder resin composition for toner and its preparation method

A bonding resin and composition technology, applied in the direction of epoxy resin glue, adhesive type, adhesive, etc., to achieve the effects of increased fixing firmness, anti-fouling and improved gloss

Active Publication Date: 2015-10-21
天津市合成材料工业研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using epoxy alone as a toner binding resin cannot make toners with excellent offset resistance and storage properties

Method used

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  • A binder resin composition for toner and its preparation method
  • A binder resin composition for toner and its preparation method
  • A binder resin composition for toner and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] Preparation of linear polyester 1

[0021] Mix 150 parts of terephthalic acid and 200 parts of propoxylated bisphenol A, add 1 part of tetrabutyl titanate catalyst, react the mixture at 220°C for 4 hours to remove the water generated by the reaction, and then reduce the reaction system Press and vacuum for 1 hour, the vacuum degree is kept at 100-200Pa, and the light yellow transparent material is obtained from the reaction, which is called LPE1. Tg=54°C, Mn=3500, Mw=28000, T 1 / 2 = 115°C. LEP is a linear polyethylene resin.

[0022] Preparation of linear polyester 2

[0023] Mix 100 parts of fumaric acid and 180 parts of ethoxylated bisphenol A, add 1.5 parts of tetrabutyl titanate catalyst, react the mixture at 200°C for 5 hours to remove the water generated by the reaction, and then depressurize the reaction system Vacuumize for 1 hour, keep the vacuum at 100-200Pa, and react to obtain a light yellow transparent material, which is called LPE2. Tg=62℃, Mn=4900, Mw...

Embodiment 1

[0050] 80 parts of LPE1, 10 parts of GPE1 and 10 parts of MEP1 were fully melted and mixed at 150°C for 60 minutes, cooled, solidified, crushed, and finely powdered to obtain adhesive resin composition 1.

Embodiment 2

[0052] 80 parts of LPE2, 10 parts of GPE1 and 10 parts of MEP1 were fully melted and mixed at 175°C for 50 minutes, cooled, solidified, crushed, and finely powdered to obtain adhesive resin composition 2.

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Abstract

The invention discloses a binding resin composition for ink powder. The binding resin composition is characterized by being composed of 1-99 parts of linear polyester, 1-50 parts of crosslinked polyester resin and 1-50 parts of modified epoxy resin. The invention also discloses a preparation method of the composition. The preparation method comprises the following steps of (1) preparing linear polyester; (2) preparing crosslinked polyester resin; (3) preparing modified epoxy resin; and (4) weighing the linear polyester, crosslinked polyester resin and modified epoxy resin prepared in the steps (1) to step (3) according to the required quantities, uniformly mixing, carrying out melt blending at the temperature of 150-200 DEG C for 30-60min, cooling, curing and crushing to obtain the binding resin composition. The binding resin composition has the advantages that the lowest photographic fixing temperature of the ink powder prepared from the binding resin composition is reduced by 15 DEG C, the migration temperature is increased by 10 DEG C, the photographic fixing fastness is increased by 16%, and the fouling resistance and lustrousness of an image are improved.

Description

Technical field: [0001] The invention relates to a toner bonding resin composition and a preparation method thereof. Specifically, the composition is composed of linear polyester resin, cross-linked polyester resin and modified epoxy resin. Background technique: [0002] With the rapid development of electrophotographic technology, the requirements for the binder resin used in toner are getting higher and higher, not only to meet the high-speed copying requirements, but also to provide high-quality copies. [0003] At present, the most urgent requirement of toner is to have excellent low-temperature fixing ability, good offset resistance, long service life, fast charging ability and excellent image quality at the same time. Polyester resin is widely used in toner due to its wide molecular weight distribution, better low-temperature fixing ability and good affinity with paper. [0004] In order to meet the various requirements of the above-mentioned toner for the resin, peop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/087G03G9/00C09J167/02C09J167/06C09J163/00
Inventor 王雪辉姚雪丽陈辉辉宋静路曼
Owner 天津市合成材料工业研究所有限公司
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