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A kind of cyanuric chloride derivative and its preparation method and application

A technology of polycyanuric chloride derivatives and cyanuric chloride is applied in the preparation of sugar derivatives, sugar derivatives, sugar derivatives, etc., which can solve the problems of inability to meet the needs of higher shrinkage temperature of leather, and improve heat resistance. The effect of increasing the shrinkage temperature

Active Publication Date: 2022-04-08
广东西顿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shrinkage temperature of leather tanned with organic phosphine tanning agents is usually lower than 60°C, which cannot meet the demand for higher shrinkage temperatures of leather.

Method used

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  • A kind of cyanuric chloride derivative and its preparation method and application
  • A kind of cyanuric chloride derivative and its preparation method and application
  • A kind of cyanuric chloride derivative and its preparation method and application

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preparation example Construction

[0026] The present invention provides a method for preparing cyanuric chloride derivatives described in the above technical scheme, comprising: mixing cyanuric chloride, water, an emulsifier, a glucosamine compound and an alkali, and performing a substitution reaction to obtain derivatives of cyanuric chloride matter; the temperature of the substitution reaction is 0-5°C.

[0027] The present invention does not have special regulation to the source of described cyanuric chloride, adopts conventional commercially available product to get final product.

[0028] In the present invention, the water is preferably deionized water. The present invention selects deionized water as the solvent used in the reaction, which can avoid the adverse effects of impurities in the water on the reaction, and further improve the yield of the product.

[0029] In the present invention, the glucosamine compound preferably includes glucosamine hydrochloride and / or glucosamine sulfate. In the prese...

Embodiment 1

[0052] Example 1

[0053] A kind of cyanuric chloride derivative, its chemical structural formula is:

[0054]

[0055] The synthetic steps of cyanuric chloride derivative tanning agent are as follows:

[0056] (1) Add 72g of deionized water and 16.7g of cyanuric chloride to a four-neck flask, and add emulsifier AEO-90.6g, keep the temperature at 2°C, and stir evenly;

[0057] (2) keep the temperature constant, add 9.5g glucosamine hydrochloride to the above system, slowly add 18.5g of sodium hydroxide solution with a mass concentration of 20%, adjust the pH of the system, make the pH stable at 6.0, and continue the reaction for 4.5h, The resulting milky white tanning agent dispersion containing cyanuric chloride derivatives (the mass content of cyanuric chloride derivatives in the dispersion is about 15.4%) is obtained, and the dispersion is purified to obtain cyanuric chloride derivatives.

[0058] The NMR characterization hydrogen spectrogram of the cyanuric chloride d...

Embodiment 2

[0068] The chemical structural formula of cyanuric chloride derivative is the same as embodiment 1, and the main difference of preparation process is: change glucosamine hydrochloride into glucosamine sulfate.

[0069] The synthetic steps of cyanuric chloride derivative tanning agent are as follows:

[0070] (1) Add 68.5g of deionized water and 22g of cyanuric chloride into a four-necked flask, and add emulsifier AEO-71.0g, keep the temperature at 4°C, and stir evenly;

[0071] (II) Keep the temperature constant, add 13g of glucosamine sulfate to the above system, and slowly add 60g of sodium carbonate solution with a mass concentration of 12% to adjust the pH of the system to stabilize the pH at 6.8, and continue to react for 5.5h. The milky white tanning agent dispersion containing cyanuric chloride derivatives (the mass content of cyanuric chloride derivatives in the dispersion is about 15.2%) is purified to obtain cyanuric chloride derivatives.

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Abstract

The invention relates to the technical field of leather auxiliary agents and provides a cyanuric chloride derivative. Because the color of the cyanuric chloride derivative provided by the invention is white, it can be used as a tanning agent for tanning light-colored or even white leather. Simultaneously because the two active chlorines contained in the chemical structure of the tanning agent provided by the present invention can produce double-point crosslinking reaction with the amino groups on the skin collagen, the cyanuric chloride derivative acts as a bridge to cross-link the amino groups on the skin collagen , to obtain a cross-linked product, thereby improving the heat resistance of the leather, thereby increasing the shrinkage temperature of the leather. Experimental results show that using the cyanuric chloride derivative provided by the invention as a leather tanning agent, the shrinkage temperature of the tanned wet white leather can reach 73-80° C., and the leather surface is white and smooth.

Description

technical field [0001] The invention belongs to the technical field of leather auxiliary agents, and in particular relates to a cyanuric chloride derivative and a preparation method and application thereof. Background technique [0002] Leather tanning agent refers to the key tanning auxiliary agent developed for raw hide to leather, and occupies an important position in the leather chemical auxiliary agent. Based on the excellent performance of chrome tanned leather, chrome tanning has always occupied a dominant position in the production of light leather in the process of tanning, but it has been gradually replaced by chrome-free tanning agents because of the serious problem of chrome pollution. Chrome-free tanning agents mainly include vegetable tanning agents and organic phosphine tanning agents. [0003] Among them, the vegetable tanned leather obtained by using vegetable tanning agents has compact structure, firmness and fullness, good extensibility and formability, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H17/02C07H1/00C14C3/26
CPCC07H17/02C07H1/00C14C3/26
Inventor 毕俊林
Owner 广东西顿新材料科技有限公司
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