Tannic acid-epoxy silane coupled compound and preparation method thereof

A coupling compound and tannic acid technology, applied in the preparation of sugar derivatives, chemical instruments and methods, sugar derivatives, etc., can solve skin tissue damage, anti-oxidation and anti-free radical abilities of tannic acid polyphenol groups reduce problems such as low price, simple preparation process, and green preparation process

Active Publication Date: 2020-11-06
SHANDONG UNIV OF TRADITIONAL CHINESE MEDICINE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In traditional tannin-based materials, metal-polyphenols or oxidants are widely used [Macromolecules 2017,50,666-676][Chem.Mater.2019,31,5625-5632], however, metal ions (Fe 3+ 、Al 3+ ) on the one hand causes damage to skin tissue, and on the other hand reduces the anti-oxidation and anti-free radical abilities of tannic acid polyphenol groups

Method used

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  • Tannic acid-epoxy silane coupled compound and preparation method thereof
  • Tannic acid-epoxy silane coupled compound and preparation method thereof
  • Tannic acid-epoxy silane coupled compound and preparation method thereof

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preparation example Construction

[0035] The invention provides a method for preparing a tannic acid-γ-glycidyl ether oxypropyltriethoxysilane coupling compound, the method comprising the following steps:

[0036] (1) tannic acid (TA) and tris (Tris) are dissolved in a solvent;

[0037] (2) adding γ-glycidyl etheroxypropyltriethoxysilane (KH561) to the solution obtained in step (1);

[0038] (3) Heating and stirring the mixed solution obtained in step (2) to obtain a homogeneous solution, and then refrigerating to obtain the coupling compound of tannic acid-γ-glycidyl ether oxypropyltriethoxysilane, and the reaction process is as follows: figure 1 shown.

[0039] Among them, tannic acid is also called tannic acid or gallic tannic acid, the English name is Tannic acid, and its structure is: It not only has the advantages of wide sources in nature, low cost, green and non-toxic, etc., because it has a large number of polyphenol groups, tannic acid also has anti-oxidation, anti-free radical, antibacterial, bi...

Embodiment 1

[0054] 2.0 g of tannic acid and 0.20 g of tris (Tris) were dissolved in 4 mL of deionized water, and heated in a water bath at 60° C. to dissolve. Subsequently, 5 mL of γ-glycidyl etheroxypropyltriethoxysilane (KH561) was added to the tannin-Tris mixture, stirred vigorously, and stirred at 60°C for 2 hours to obtain a homogeneous solution, and finally Refrigerate at room temperature or at 4°C for later use.

Embodiment 2

[0056] Dissolve 3.0 g of tannic acid and 0.20 g of Tris in 4 mL of deionized water, and heat to dissolve in a water bath at 60°C. Then add 5mL of KH561 into the tannin-Tris mixture, stir vigorously, continue to stir at 60°C for 2h to obtain a homogeneous solution, and finally refrigerate at room temperature or 4°C for later use.

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Abstract

The invention provides a tannic acid-epoxy silane coupled compound and a preparation method thereof. The method comprises the following steps of: (1), dissolving tannic acid and trihydroxymethyl aminomethane in a solvent; (2), adding gamma-glycidyl ether oxypropyl triethoxysilane (KH561) into the solution obtained in the step (1); and (3), heating and stirring the mixed solution obtained in the step (2), so that homogeneous solution is obtained, and then, obtaining the tannic acid-epoxy silane coupled compound by refrigeration. The method in the invention is low in raw material cost, simple, convenient and green in preparation process and free from metal ion; and the obtained product has the antibacterial property, the oxidation resistance property, the free radical resistance property andthe like, has a special aroma similar to red wine, and has good adhesion capacity to skin and other materials.

Description

technical field [0001] The invention belongs to the field of biomedical macromolecules, and its synthesis process relates to the field of macromolecular polymerization, specifically including the hydrolysis polycondensation of epoxy silane coupling agents and the condensation reaction between polyphenols and silanols. Background technique [0002] Red wine is a recognized health drink, which has the effects of lowering blood fat, inhibiting bad cholesterol, softening blood vessels, enhancing cardiovascular function and heart activity. However, the application of red wine is not limited to internal use, it can also be used externally to beautify, slow down aging and other effects, which is quite beneficial to the skin. The reason why red wine has so many benefits is due to its antioxidant substances such as resveratrol, flavonoids and tannins, which provide collagen and elastic fibers for the skin, while these substances also protect the skin from heavy metals and free radica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/18C07H1/00A61P17/02C09J11/06
CPCA61P17/02C07H1/00C07H15/18C09J11/06
Inventor 陈辰马玉宁马玉侠马凤君
Owner SHANDONG UNIV OF TRADITIONAL CHINESE MEDICINE
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