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Storage method of aziridine compounds

A compound and aziridine technology, which is applied in the storage field of aziridine compounds, can solve problems such as easy ring-opening and self-polymerization, and achieve the effects of convenient use, low cost and easy operation.

Inactive Publication Date: 2019-04-26
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the background technology and solve the problem of easy ring-opening self-polymerization of aziridine compounds during storage, the present invention provides a low-cost, easy-to-operate, long-storage time, and easy-to-use aziridine Storage methods for class compounds

Method used

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  • Storage method of aziridine compounds
  • Storage method of aziridine compounds

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Effect test

Embodiment 1

[0020] Using monoethanolamine as raw material, aziridine was prepared by Wenker method. After separation by rectification, the purity was analyzed by liquid chromatography, and its chromatographic content was 99.5%. Take 20g of freshly prepared aziridine, put it into a 50mL single-necked glass bottle, without adding any solid alkaline stabilizer, put it in the refrigerator, and store it airtight at -20°C for 6 months (May to October) Afterwards, the sample in the bottle was taken and analyzed by liquid chromatography, and the aziridine content was 95.1%.

Embodiment 2

[0022] Using monoethanolamine as raw material, aziridine was prepared by Wenker method. After separation by rectification, the purity was analyzed by liquid chromatography, and its chromatographic content was 99.5%. Take 20g of freshly prepared aziridine, put it into a 50mL single-mouth glass bottle, without adding any solid alkaline stabilizer, put it in an incubator, and store it airtight at 30°C for 6 months (May to October) Afterwards, the sample in the bottle was taken and analyzed by liquid chromatography, and the aziridine content was 85.3%.

Embodiment 3

[0024] Using monoethanolamine as raw material, aziridine was prepared by Wenker method. After separation by rectification, the purity was analyzed by liquid chromatography, and its chromatographic content was 99.5%. Take 20g of freshly prepared aziridine, put it into a 50mL single-necked glass bottle, add 1% (0.2g) KOH as a solid alkaline stabilizer, place it in an incubator, and store it airtight at 30°C for 6 months ( May~October), get the sample in the bottle and enter liquid chromatography analysis, and the aziridine content drops to 98.8%.

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Abstract

The invention discloses a storage method of aziridine compounds to prevent deterioration of the aziridine compounds during storage due to ring-opening auto-polymerization. In the method, the aziridinecompounds and an alkaline solid stabilizer are mixed to be stored as composition of the aziridine compounds and the alkaline solid stabilizer. Preferably, the alkaline solid stabilizer is one or a mixture of more of alkali metal and / or oxide and hydroxide of alkali metal, and the alkaline solid stabilizer accounts for 0.1%-10% of the mass of the aziridine compounds. The method is applicable to storage of the aziridine compounds prepared with various methods, and ring-opening auto-polymerization reactions of the aziridine compounds can be effectively prevented.

Description

technical field [0001] The invention belongs to the field of fine chemical industry and relates to a method for storing aziridine compounds. Background technique [0002] Aziridine compounds are a class of active compounds with a three-membered nitrogen-heterocyclic structure, and are widely used in the fields of preparation of crosslinking agents and synthesis of cationic polymers. For example, trimethylolpropane-tris[3-(2-methylaziridinyl)]propionate (HD100), trimethylolpropane-tris(3-aziridinyl)propionate (HD105 ) and trimethylolpropane-tris[3-(2-methylaziridinyl)]propionate (HD110) and other trifunctional aziridine crosslinking agents containing an aziridine structure are a class of Solvent, no harmful substances such as formaldehyde are released after cross-linking, and the finished product after cross-linking is non-toxic and odorless. It is an environmentally friendly cross-linking agent, widely used in leather, textiles, inks, coatings, pressure-sensitive adhesives,...

Claims

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Application Information

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IPC IPC(8): C07D203/08
CPCC07D203/08
Inventor 梅苏宁吕剑杨建明余秦伟赵锋伟张前王为强袁俊李亚妮石坚
Owner XIAN MODERN CHEM RES INST