Method for preparing polyaniline conductive ink

A technology of conductive ink and polyaniline, applied in ink, household utensils, applications, etc., can solve the problems of cumbersome, multi-process, high cost of polyaniline conductive ink, etc., and achieve the effect of improved productivity and good dispersion

Inactive Publication Date: 2005-02-16
苏州丸爱半导体包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the previous preparation method of polyaniline conductive ink needs many and loaded down with trivial details procedures
Moreover, with this cumbersome preparation method, there is a problem that the cost of polyaniline conductive ink is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the polyaniline conductive ink of the invention of the present application at least comprises:

[0020] (1) In the presence of an anionic surfactant, aniline is polymerized in an aqueous solvent to obtain a polyaniline colloid (polymerization process),

[0021] (2) adding one or more organic solvents to the reaction solution after the polymerization reaction, separating the two layers, and transferring the polyaniline colloid to the organic layer (transfer step), and

[0022] (3) A step of removing the water layer (separation step). can also include

[0023] (4) A binder resin is added to the organic layer. If necessary, a process of evaporating the solvent of the organic layer and adding the organic solvent again (redispersion process).

[0024] In the preparation method of polyaniline conductive ink of the invention of the present application, the anionic surfactant used in the polymerization process has two functions of protonic acid and ...

Embodiment 1

[0043] (1) Synthesis of polyaniline

[0044] Add 0.1 mol of dodecylbenzenesulfonic acid and 0.1 mol of aniline to 1.5 L of pure water, and stir thoroughly. Cool while stirring, and when the liquid temperature in the reaction tank reaches below 5°C, slowly add 500ml of 0.25mol / L ammonium persulfate aqueous solution dropwise to synthesize polyaniline. After completion of the dropwise addition of the ammonium persulfate aqueous solution, the mixture was stirred for 12 hours to complete the reaction.

[0045] (2) Transfer of polyaniline from aqueous system to organic system

[0046] Transfer 300ml of polyaniline synthesis solution to a separatory funnel, add 200ml of ethyl acetate to it, and mix well. After standing still until the organic layer and the water layer were separated, the lower water layer was removed. The organic layer was taken out, an acrylic resin dissolved in ethyl acetate was added, and the solvent was removed by fully mixing and stirring while blowing hot ai...

Embodiment 2

[0052] (1) Synthesis of polyaniline

[0053] Add 0.1 mol of dodecylbenzenesulfonic acid and 0.1 mol of aniline to 1.5 L of pure water, and stir thoroughly. Cool while stirring, and when the liquid temperature in the reaction tank reaches below 5°C, slowly add 500ml of 0.25mol / L ammonium persulfate aqueous solution dropwise to synthesize polyaniline. After completion of the dropwise addition of the ammonium persulfate aqueous solution, the mixture was stirred for 12 hours to complete the reaction.

[0054] (2) Transfer of polyaniline from aqueous system to organic system

[0055] 10ml of polyaniline synthesis solution was transferred to a separatory funnel, 65g of acrylic resin solution (4g of acrylic resin, 42g of toluene, 17.6g of methyl ethyl ketone, 1.4g of isopropanol) was added thereto, and fully mixed.

[0056] After standing still until the organic layer and the water layer were separated, the lower water layer was removed. The organic layer was taken out, fully mixe...

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Abstract

The production process of the polyaniline electrically conductive ink is composed of a process for obtaining a polyaniline colloid by polymerization of aniline in an aqueous medium at least in the presence of an anionic surfactant, a process for separating into two layers by adding at least one organic solvent to the reaction solution after the polymerization to migrate the polyaniline colloid to the organic layer, and a process for removing the aqueous layer.

Description

technical field [0001] The invention of the present application relates to a preparation method of polyaniline conductive ink. More specifically, the invention of the present application relates to a simple preparation of a polyaniline conductive ink capable of transferring the polyaniline colloid obtained by polymerization in an aqueous solvent to an organic layer without going through processes such as coagulation, separation, and washing method. Background technique [0002] In the past, polyaniline conductive inks were made by polymerizing aniline in an aqueous solvent in the presence of anionic surfactants, and agglomerating the obtained polyaniline colloids (for example, patent document 1-patent publication 6-279584, 2-JP 2001-049170). [0003] In the preparation method of this polyaniline conductive ink, because the polyaniline colloid formed in the presence of anionic surfactant not only has a very small particle size (such as tens of nm to several μm), but also th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52
Inventor 细田正和阿部真也毛利英希小池美穗仓本宪幸
Owner 苏州丸爱半导体包装有限公司
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