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Method for synthesizing dithioamino formic acid and diivinyl triamineethyl polymers

A technology of diethylenetriamineethyl dithiocarbamate and a synthesis method, which is applied in the field of synthesis of dithiocarbamate polymers, can solve problems such as unfavorable popularization and application, high reaction temperature, and long suction filtration time, and achieve Conducive to popularization and application, simple operation, and the effect of reducing production costs

Inactive Publication Date: 2006-09-13
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: the synthesis time and the suction filtration time of the intermediate are all long, the operation is complicated, the reaction temperature is high, and the water consumption is large, which is not conducive to popularization and application, etc.

Method used

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  • Method for synthesizing dithioamino formic acid and diivinyl triamineethyl polymers
  • Method for synthesizing dithioamino formic acid and diivinyl triamineethyl polymers
  • Method for synthesizing dithioamino formic acid and diivinyl triamineethyl polymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of operation sequence of the synthetic method of diethylenetriamine ethyl dithiocarbamic acid polymer is as follows:

[0025] Under normal pressure, in a three-necked round-bottomed flask equipped with electromagnetic stirring and reflux condenser, the following operations were performed in sequence:

[0026] (1), sequentially add medicine and stir

[0027] ① first add water 100ml and sodium hydroxide 12g and stir;

[0028] ②Finally, add 10.75ml of diethylenetriamine and stir;

[0029] ③ Slowly add 12.06ml of carbon disulfide dropwise and stir at a rate of 0.5 drops per second.

[0030] (2), react

[0031] After the carbon disulfide in steps ①~③ was added dropwise, the reaction was carried out at room temperature for 1.5 hours to obtain an orange-yellow reaction liquid.

[0032] (3) Stir again and carry out polymerization reaction

[0033] In the orange-yellow liquid obtained in step (2), slowly add 7.88ml of 1,2-dichloroethane dropwise and stir at a rate of...

Embodiment 2

[0048] A kind of operation sequence of the synthetic method of diethylenetriamine ethyl dithiocarbamic acid polymer is as follows:

[0049] Under normal pressure, in a three-necked round-bottomed flask equipped with electromagnetic stirring and reflux condenser, the following operations were performed in sequence:

[0050] (1), sequentially add medicine and stir

[0051] ① first add water 100ml and sodium hydroxide 14g and stir;

[0052] ②Finally, add 10.75ml of diethylenetriamine and stir;

[0053] ③ Slowly add 11.09ml of carbon disulfide dropwise and stir at a rate of 1 drop per second.

[0054] (2), react

[0055] After the carbon disulfide in steps ①~③ was added dropwise, the reaction was carried out at room temperature for 1 hour to obtain an orange-yellow reaction liquid.

[0056] (3) Stir again and carry out polymerization reaction

[0057] In the orange-yellow liquid obtained in step (2), slowly add 7.96ml of 1,2-dichloroethane dropwise and stir at a rate of 1 dro...

Embodiment 3

[0066] A kind of operation sequence of the synthetic method of diethylenetriamine ethyl dithiocarbamic acid polymer is as follows:

[0067] Under normal pressure, in a three-necked round-bottomed flask equipped with electromagnetic stirring and reflux condenser, the following operations were performed in sequence:

[0068] (1), sequentially add medicine and stir

[0069] ① first add water 100ml and sodium hydroxide 15g and stir;

[0070] ②Finally, add 11ml of diethylenetriamine and stir;

[0071] ③ Slowly add 12.30ml of carbon disulfide dropwise and stir at a rate of 0.5 drops per second.

[0072] (2), react

[0073] After the carbon disulfide in steps ①~③ was added dropwise, the reaction was carried out at room temperature for 80 minutes to obtain an orange-yellow reaction liquid.

[0074] (3) Stir again and carry out polymerization reaction

[0075] In the orange-yellow liquid obtained in step (2), slowly add 7.72ml of 1,2-dichloroethane dropwise and stir at a rate of 1...

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Abstract

The invention disclosed a synthetic method of the dithiocarbamic acid diethylene ethyl polymer and deals with the composing method of the dithiocarbamic acid polymer. The invention is the single stage process; the water, the sodium hydroxide, the diethylene tren, the carbon bisulfide and 1,2-dichloethane is mixed in turn to the polyreaction, so the adsorbent having the good ability of adsorbing the metallic ion. The invention has some merits of the easy means, the easy operation, the operator saving and the time saving, the water and organic solvent economy, the low cost of the producing, the wild acting condition, the safe produce, the energy saving, easy industrial production, the benefit of extending and applying. The production of the invention can be used for fathering the sullage containing the heavy-metal ion, so it can be applied to some trades such as the plate, the electron, the metallurgy, the petroleum processing and the pulp producing and is favourable to the environmental protection.

Description

1. Technical field [0001] The invention belongs to the technical field of synthesis of heavy metal chelating agents, in particular to a synthesis method of dithiocarbamic acid polymers. 2. Background technology [0002] In recent years, with the further improvement of my country's industrialization and urbanization, the continuous development of electroplating, metallurgy, petroleum refining, pulp production and other industries, the amount of wastewater containing heavy metal ions is also increasing. Excessive heavy metal ions in the water environment will affect the health and survival of humans and other organisms. When dealing with heavy metal ions, the traditional chemical precipitation method has disadvantages such as complex operation, heavy metal ions will be precipitated from the sludge again with the change of pH value, and cause secondary pollution. Therefore, it is necessary and urgent to explore and study effective methods and technologies for removing heavy me...

Claims

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Application Information

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IPC IPC(8): C08F130/04
Inventor 郑怀礼孙秀萍
Owner CHONGQING UNIV
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