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Room-temperature cross-linking agent based on further synthesis and preparation method

A room temperature cross-linking and synthesis technology, which is applied in the preparation of organic compounds, chemical instruments and methods, and cyanide reaction preparation, etc., can solve the problems of low efficiency, achieve the effects of simplified steps, significant production advantages, and improved yields

Inactive Publication Date: 2018-12-21
WUHAN QIANGLONG NEW CHEM MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to provide a kind of high yield, the preparation technology of high-quality trimethylolpropane-three-(3-ethyleneimino)-propionate room temperature crosslinking agent, to solve existing The problem of low efficiency of technology in actual industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Put methyl isobutyl ketone and pentaerythritol solvent with a volume ratio of 1:2 into the three-necked reaction flask, replace with nitrogen, add trimethylolpropane triacrylate, ethyleneimine, formaldehyde under stirring at 150 rpm Hydroquinone and hexamethylenetetramine, then add lye dropwise to adjust the pH of the mixture to 8.0, then raise the temperature to 90°C, and react for 6 hours to obtain trimethylolpropane-tri-(3-ethyleneimine )-propionate room temperature crosslinking agent, wherein the mass ratio of trimethylolpropane triacrylate, ethyleneimine, methylhydroquinone and hexamethylenetetramine is: 30:19:5:0.3 .

Embodiment 2

[0016] Put methyl isobutyl ketone and pentaerythritol solvent with a volume ratio of 2:5 into a three-necked reaction flask, replace with nitrogen, add trimethylolpropane triacrylate, ethyleneimine, formaldehyde under stirring at 100 rpm Hydroquinone and hexamethylenetetramine, then add dropwise lye to adjust the pH of the mixture to 9.0, then raise the temperature to 100°C, and react for 5 hours to obtain trimethylolpropane-tri-(3-ethyleneimine )-propionate room temperature crosslinking agent, wherein the mass ratio of trimethylolpropane triacrylate, ethyleneimine, methylhydroquinone and hexamethylenetetramine is: 32:22:4:0.2 .

Embodiment 3

[0018] Put methyl isobutyl ketone and pentaerythritol solvent with a volume ratio of 1:3 into the three-necked reaction flask, replace with nitrogen, add trimethylolpropane triacrylate, ethyleneimine, formaldehyde under stirring at 180 rpm Hydroquinone and hexamethylenetetramine, and then add lye dropwise to adjust the pH of the mixture to 8.5, then raise the temperature to 110°C, and react for 4 hours to obtain trimethylolpropane-tri-(3-ethyleneimine )-propionate room temperature crosslinking agent, wherein the mass ratio of trimethylolpropane triacrylate, ethyleneimine, methylhydroquinone and hexamethylenetetramine is: 20:25:4:0.5 .

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a room-temperature cross-linking agent based on further synthesis. A simple one-step synthetic process is adopted. The preparation method comprises the following steps: placing methyl isobutyl ketone and a pentaerythritol solvent into a three-opening reaction flask, replacing by using nitrogen, stirring, adding trimethylolpropane triacrylate, ethylenimide, methylnaphthohydroquinone and hexamine, dropwise adding an alkaline solution, adjusting pH of a mixture, heating to a given temperature, reactingfor a period of time, and obtaining trimethylolpropane-tri(3-aziridinyl)-propionate room-temperature cross-linking agent. By adopting the preparation method, the product yield and quality can be improved, the cost can be reduced, the operation is simple, and the preparation method is suitable for the industrialized production of the trimethylolpropane-tri(3-aziridinyl)-propionate room-temperaturecross-linking agent.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a room temperature crosslinking agent based on one-step synthesis and a preparation method. Background technique [0002] Aziridine trifunctional cross-linking agents were developed abroad in the 1970s, and were industrialized in the 1990s. At the end of the 20th century, such products began to enter our country. The addition method is the preferred method for the early production of this product. The transesterification method is only suitable for large-scale production, requires special equipment, and is technically difficult. Therefore, the investment scale is large, the operation requirements are strict, and the product quality is slightly better than that of the addition method. [0003] The biggest advantage of the aziridine crosslinking agent is that the dosage is small, the crosslinking activity and crosslinking density are large, and the CO in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/08C07C229/30
CPCC07D203/08
Inventor 施明李雪莲张兵杨铧李瑞
Owner WUHAN QIANGLONG NEW CHEM MATERIALS
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