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Eigenstate poly 2,3-dimethylaniline preparation, and application of eigenstate poly 2,3-dimethylaniline in anti-corrosive paint

A technology of dimethylaniline and eigenstate, which is applied in the field of preparation of polyaniline derivatives, can solve problems such as unreported research in the field of metal anticorrosion, achieve strong anticorrosion performance, dispersibility and ease of processing, and improve anticorrosion properties. Corrosive power, easy-to-achieve effects

Active Publication Date: 2012-02-01
绍兴贝斯美化工股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are few reports on the synthesis of poly-2,3-dimethylaniline in the intrinsic state, and there is no report on its research in the field of metal anticorrosion.

Method used

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  • Eigenstate poly 2,3-dimethylaniline preparation, and application of eigenstate poly 2,3-dimethylaniline in anti-corrosive paint
  • Eigenstate poly 2,3-dimethylaniline preparation, and application of eigenstate poly 2,3-dimethylaniline in anti-corrosive paint
  • Eigenstate poly 2,3-dimethylaniline preparation, and application of eigenstate poly 2,3-dimethylaniline in anti-corrosive paint

Examples

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preparation example 1

[0047] In the water bath at 10℃, add 50ml distilled water, 8.2×10 -3 mol sulfuric acid and 1.6×10 -2 mol 2,3-dimethylaniline, stir to mix evenly; Dissolve 7.5g of ammonium persulfate in 25ml of distilled water, slowly drip into the reaction system, and react for 9 hours under stirring; after the reaction, filter with suction and use distilled water The filter cake was washed until the filtrate was colorless; after the filter cake was dried in an oven at 60° C. for 6 hours, it was taken out and ground to obtain sulfuric acid-doped P2,3-DMA powder.

[0048] The measurement method of molecular weight adopts high performance liquid chromatography.

[0049] The average molecular weight (weight average molecular weight) is 35428.

preparation example 2

[0051] In the water bath at 40℃, add 50ml distilled water, 2.5×10 -3 mol dodecylbenzene sulfonic acid and 1.6×10 -2 mol 2,3-dimethylaniline, stir to mix evenly; Dissolve 7.5g of ammonium persulfate in 25ml of distilled water, slowly drip into the reaction system, and react for 9 hours under stirring; after the reaction, filter with suction and use distilled water The filter cake was washed until the filtrate was colorless; after the filter cake was dried in an oven at 60° C. for 8 hours, it was taken out and ground to obtain dodecylbenzenesulfonic acid doped P2,3-DMA powder.

preparation example 3

[0053] In the water bath at 70℃, add 50ml distilled water, 4×10 -2 mol camphorsulfonic acid and 1.6×10 -2 mol 2,3-dimethylaniline, stir to mix evenly; Dissolve 13g of ammonium persulfate in 25ml of distilled water, slowly drip into the reaction system, and react for 12 hours under stirring; after the reaction, filter with suction and wash with distilled water Filter cake until the filtrate was colorless; after the filter cake was dried in an oven at 60°C for 10 hours, it was taken out and ground to obtain camphorsulfonic acid doped P2,3-DMA powder.

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Abstract

The invention provides a method for preparing an anti-corrosive paint by taking eigenstate poly 2,3-dimethylaniline as an anti-corrosive additive. The method comprises the following steps: reacting protonic acid with 2,3-dimethylaniline in distilled water by an oxidizing agent such as sodium persulfate or ammonium persulfate, pump filtrating after finishing the reaction, washing, drying, grindingto obtain the doped poly 2,3-dimethylaniline powder; then weighting doped poly 2,3-dimethylaniline powder which is doped by protonic acid, detracting doping by a doping removal agent, filtering, washing, drying and grinding to obtain the eigenstate 2,3-dimethylaniline. According to the invention, the method has the advantages of simple operation, mild reaction condition, easy raw material acquisition, small environmental pollution and the like. Adding the prepared eigenstate 2,3-dimethylaniline in the anti-corrosive paint is capable of obviously enhancing the anti-corrosive performance of thepaint. Compared with the present eigenstate polyaniline with good anti-corrosive property and wide application field, the prepared eigenstate poly 2,3-dimethylaniline has stronger anticorrosion performance, dispersibility and workability which are hopeful to be a novel high performance anti-corrosive additive.

Description

Technical field [0001] The present invention involves a method of preparation of polyiline derivatives, especially the preparation method of the 2,3-dimethyl anil anil anil aniline, and its application as an anticorrosive additive in anticorrosive coatings. Background technique [0002] Among the functional polymer materials developed in the middle of the 20th century, conductive polymer materials are the most prominent generation [0003] surface.Among them, polyiline (PANI) has become one of the most conductive functional polymer materials with good environmental stability, unique doping mechanism, and excellent electrochemical properties., Electromagnetic shielding materials, anti -polluting coatings, chemical sensors, selective through membrane and other fields.Since domestic and foreign scholars have been found to have a protective effect on iron fundamentals at home and abroad, the corrosion performance of polyiline to metal materials has gradually become a new research hot...

Claims

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Application Information

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IPC IPC(8): C08G73/02C09D5/08
Inventor 马利严俊单洪亮李志春仁纪纲
Owner 绍兴贝斯美化工股份有限公司