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Preparation method and application of ionic liquid

A technology of ionic liquids and ions, which is applied in the preparation of ionic liquids and its application fields, can solve the problems of poor stability of antistatic agents, poor antistatic durability, and no long-term effect, and achieve less impurity ion content, which is conducive to industrialization, The effect of the simplicity of the preparation protocol

Inactive Publication Date: 2016-10-05
JIANGSU GUOTAI SUPER POWER NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The external antistatic agent acts on the surface of the plastic, and the antistatic film produced is basically effective for all plastics, but has the following disadvantages: the durability of the antistatic effect is too poor, and it does not have a long-term effect
For optically transparent plastics such as polycarbonate (PC), polyethylene terephthalate (PET), etc., conventional ones such as carbon black cannot meet the requirements; in addition, when the molding temperature reaches 300 ° C or higher , Some conventional antistatic agents have poor stability and will decompose or change color at high temperature

Method used

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  • Preparation method and application of ionic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: 1-ethyl-3-methylimidazole bis-trifluoromethanesulfonimide salt (EMI TFSI)

[0030] Step 1: Take 287.1g of lithium bistrifluoromethanesulfonylimide (LiTFSI) and completely dissolve it in water to form an aqueous solution with a concentration of 50% by mass;

[0031] Step 2: Take 191.1g of 1-ethyl-3-methylimidazole bromide (EMIBr) and completely dissolve it in water to form an aqueous solution with a concentration of 50% by mass;

[0032] Step 3: Fully mix and react the aqueous solution product obtained in Step 1 and Step 2, and separate the liquid to obtain the crude product;

[0033] Step 4: The crude product obtained in Step 3 is washed twice with water, stirred, emulsified, heated to 60°C to break the emulsion, and then separated to obtain a high-purity product;

[0034] Step 5: Vacuum-dry the high-purity product obtained in Step 4 for 8 hours at 100°C to obtain 383.5g of colorless liquid EMI·TFSI product (melting point about -15°C), purity 99.95%, moistur...

Embodiment 2

[0035] Example 2: Tri-n-butylmethylammonium bis(trifluoromethanesulfonyl)imide salt (TBMA TFSI)

[0036] Step 1. Take 287g LiTFSI and completely dissolve it in water to form an aqueous solution with a concentration of 50% by mass;

[0037] Step 2, get 236g tributylmethylammonium chloride (TBMACl) and be completely dissolved in water and be configured into the aqueous solution that mass percent concentration is 50%;

[0038] Step 3, the aqueous solution product obtained in step 1 and step 2 is fully mixed and reacted, and the liquid separation is obtained to obtain the crude product;

[0039] Step 4: The crude product obtained in Step 3 is washed with water for 3 times, and the emulsion is broken by stirring, emulsifying, heating up to 70°C, and the high-purity product is obtained after liquid separation;

[0040] Step 5: Vacuum dry the high-purity product obtained in Step 4 at 100° C. for 10 hours to obtain 462 g of a colorless liquid TBMA·TFSI product (melting point about 27...

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Abstract

The invention relates to a preparation method of ionic liquid. The preparation method comprises the following steps: dissolving a water-soluble compound of which negative ions are trifluoro-alkyl sulfimide ions in water to prepare a first aqueous solution; dissolving a water-soluble compound of which positive ions are quaternary ammonium ions or imidazole ions in water to prepare a second aqueous solution; mixing the first aqueous solution and the second aqueous solution together according to a mole ratio of the negative ions to the positive ions of 1:(0.9-1.1), and then performing separation to obtain a crude product; rinsing the crude product to obtain a high-purity product; and performing vacuum drying on the high-purity product to obtain the ionic liquid. The preparation scheme of the ionic liquid provided by the invention is simple and feasible, and is conducive to industrialization; the prepared ionic liquid is high in purity, low in water content, and low in foreign ion content; and the ionic liquid of this type is high in thermal decomposition temperature and low in chroma, and can be used as an antistatic agent with high optical transparence requirements for high-temperature molding plastics.

Description

technical field [0001] The invention specifically relates to a preparation method and application of an ionic liquid. Background technique [0002] Plastics, such as low-density and high-density polyethylene, polypropylene, polystyrene and other electrical insulators, may accumulate high surface charges during their production, processing and use of films and molds made from them. The accumulation of electrostatic charges is a major cause of various problems in the processing and application of many industrial products and materials. Therefore, from the beginning of the use of plastics, it is necessary to prevent, conduct and minimize static charges. The usual method is to use antistatic agents, that is, non-ionic or ionic surface-active compounds. [0003] The antistatic agents used today are basically external or internal antistatic agents. The external antistatic agent acts on the surface of the plastic, and the antistatic film produced is basically effective for all pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/323C07C311/48C07C303/40C08K5/44C08K5/3445C08K5/19C08L33/04C08L69/00C08L67/02
Inventor 施苏萍李建中闻立新熊鲲
Owner JIANGSU GUOTAI SUPER POWER NEW MATERIALS
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