Preparation method for refined material of crude trimesic acid

A technology of trimellitic acid and crude homogenization, which is applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, alkali metal oxides/hydroxides, etc., can solve the problem of high energy consumption, poor adsorption capacity, long time consumption, etc. problem, to achieve the effect of long service life, good corrosion resistance and reduced time consumption

Inactive Publication Date: 2018-06-22
孝感市锐思新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the existing trimesic acid production or purification processes use activated carbon as an adsorbent or a multi-step cryst

Method used

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  • Preparation method for refined material of crude trimesic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the reaction kettle, add maleic anhydride 100Kg, polyvinyl alcohol 1.5Kg, 1,5,9,13-tetradetracene 2Kg, 3-isoamyl (2-methyl-3-furyl) Disulfide 0.75Kg, furan-3-ylethynyl trimethylsilane 1.5Kg, N-hydroxyl-5-norbornene-2,3-dicarboximide perfluorobutyl sulfonate 0.5Kg, ( 2Z)-cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-2-butenamide 0.05Kg, benzoyl peroxide 1.5Kg, liquid wax 40Kg, water 750Kg, stir well Afterwards, the temperature was raised to 87°C, and the reaction was carried out for 15 hours. After the reaction, the liquid wax was washed away with gasoline, washed with water, and dried to obtain the refined material of crude trimesic acid.

Embodiment 2

[0024] In the reaction kettle, add maleic anhydride 100Kg, polyvinyl alcohol 1Kg, 1,5,9,13-tetradetracene 1Kg, 3-isoamyl (2-methyl-3-furyl) di Thioethers 0.5Kg, furan-3-ylethynyltrimethylsilane 1Kg, N-hydroxy-5-norbornene-2,3-dicarboximide perfluorobutylsulfonate 0.1Kg, (2Z) -cyano-3-hydroxyl-N-[4-(trifluoromethyl)phenyl]-2-butenamide 0.01Kg, benzoyl peroxide 1Kg, liquid wax 30Kg, water 500Kg, stir and heat up to React at 80°C for 10 hours. After the reaction, wash off the liquid wax with gasoline, wash with water, and dry to obtain the refined material of crude trimesic acid.

Embodiment 3

[0026] In the reaction kettle, add maleic anhydride 100Kg, polyvinyl alcohol 2Kg, 1,5,9,13-tetradetracene 3Kg, 3-isoamyl (2-methyl-3-furyl) di Sulfide 1Kg, furan-3-ylethynyltrimethylsilane 2Kg, N-hydroxy-5-norbornene-2,3-dicarboximide perfluorobutylsulfonate 1Kg, (2Z)-cyanide Base-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-2-butenamide 0.1Kg, benzoyl peroxide 2Kg, liquid wax 50Kg, water 1000Kg, stir well and heat up to 95°C , React for 20h, after the reaction, wash off the liquid wax with gasoline, wash with water, and dry to obtain the refined material of crude trimesic acid.

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Abstract

The invention relates to a preparation method for a refined material of crude trimesic acid. The preparation method comprises the following steps: adding, by weight, maleic anhydride, polyvinyl alcohol, 1,5,9,13-tetradeca-tetraene, 3-isopentyl(2-methyl-3-furyl)disulfide, furan-3-ylethynyltrimethylsilane, N-hydroxy-5-norbornene-2,3-dicarboximide perfluorobutylsulfonate, (2Z)-cyano-3-hydroxy-N-[4-(trifluoromethyl)phenyl]-2-butenamide, benzoyl peroxide, liquid wax and water into a reaction kettle, and carrying out uniform mixing under stirring; then carrying out heating for a reaction; after completion of the reaction, carrying out washing with gasoline so as to remove the liquid wax; and then successively carrying out washing with water and drying to obtain the refined material of crude trimesic acid.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent, in particular to a preparation method of crude trimesic acid refined material. Background technique [0002] Trimellitic acid is 1.3.5-benzenetricarboxylic acid, English name: 1,3,5-Benzenetricarboxylic acid This product is needle-shaped or prismatic crystal, it is an important chemical raw material, used as a pharmaceutical intermediate Used in the preparation of fungicides, antifungal agents, plasticizers and crosslinking agents. [0003] CN104513156A discloses a method for purifying crude trimesic acid. The purification method includes the following steps: adding the crude trimesic acid into ethanol and heating, dissolving under stirring conditions, and adding activated carbon for adsorption after all dissolved, Filtrate after adsorption balance, and gradually cool the filtrate, the crude trimesic acid gradually precipitates and crystallizes, and then separates to obtain the target prod...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01J20/28C07C51/47C07C63/307
CPCB01J20/264B01J20/28057C07C51/47C07C63/307
Inventor 王艺霖王新
Owner 孝感市锐思新材科技有限公司
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