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Preparation method of aliphatic monomer containing disulfide bond

An aliphatic and disulfide bond technology, applied in the field of preparation of aliphatic monomers, can solve the problems of high price and difficult batch preparation

Pending Publication Date: 2022-07-05
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the literature reports use 2-hydroxyethyl disulfide or 4,4'-dithiodiphenyl as chain extenders to prepare self-healing polyurethane elastomers with disulfide bonds. Although these studies have achieved good results, but Using 2-hydroxyethyl disulfide or 4,4'-dithiobiphenyl as a disulfide bond-containing chain extender is expensive and difficult to prepare self-healing polyurethane elastomers in batches

Method used

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  • Preparation method of aliphatic monomer containing disulfide bond
  • Preparation method of aliphatic monomer containing disulfide bond
  • Preparation method of aliphatic monomer containing disulfide bond

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4 and comparative example 1～3

[0048] Weigh the raw materials according to the formula in Table 1, then add cystamine dihydrochloride to the mixed solution of ethanol and tetrahydrofuran to obtain the organic solution of cystamine dihydrochloride; To the organic solution of cystamine dihydrochloride, add Triethylamine and octadecyl acrylate are reacted; after the reaction, washing with deionized water is used to obtain a pale yellow precipitate; the pale yellow precipitate is dried in a vacuum oven to obtain an aliphatic monomer containing disulfide bonds.

[0049] Structural test is carried out to the product obtained from Example 1, and the results are as follows figure 1 and figure 2 shown.

[0050] figure 1 Among them, curve a is the infrared spectrum of octadecyl acrylate, curve b is the infrared spectrum of cystamine dihydrochloride, and curve c is the infrared spectrum of aliphatic monomers containing disulfide bonds. from figure 1 It can be observed that the infrared spectrum of aliphatic monom...

Embodiment 1

[0052] The reaction principle of embodiment 1 is as follows:

[0053]

[0054] Table 1

[0055]

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Abstract

The invention discloses a preparation method of an aliphatic monomer containing a disulfide bond, which comprises the following steps: mixing a basic catalyst, acrylate with a structure as shown in a formula (I) and an organic solution containing a compound with a structure as shown in a formula (II), stirring and reacting for 6-24 hours at the reaction temperature of 20-45 DEG C, washing and drying to obtain the aliphatic monomer containing the disulfide bond. The preparation method of the aliphatic monomer containing the disulfide bond is simple, the raw material source is wide, the cost is low, and the aliphatic monomer containing the disulfide bond prepared by the method can improve the mechanical property and the self-healing property of a polyurethane elastomer.

Description

technical field [0001] The present invention relates to a preparation method of aliphatic monomers containing disulfide bonds. Background technique [0002] The structure and properties of polyurethane elastomers can be adjusted by changing the formula to meet various needs of people. For example, self-healing polyurethane elastomers can be prepared by introducing dynamically reversible chemical bonds into the structure of polyurethane elastomers to endow the elastomers with reversible dynamic characteristics. [0003] Disulfide bond (ie, disulfide bond) is an important dynamic reversible chemical bond. The bond energy of the disulfide bond is low, and it can undergo an exchange reaction under various external stimuli, and the conditions of the exchange reaction are mild and easy to control. In the design of self-healing polyurethane elastomers based on disulfide bonds, most of the monomers containing disulfide bonds are used as chain extenders to prepare polyurethane elas...

Claims

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Application Information

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IPC IPC(8): C07C319/22C07C323/25C08G18/38
CPCC07C319/22C07C323/25C08G18/3863
Inventor 曹雪娟伍燕单柏林杨晓宇唐伯明魏奎玲袁颖
Owner CHONGQING JIAOTONG UNIVERSITY
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