A kind of tannic acid-epoxysilane coupling compound and its preparation method

A technology for coupling compounds and tannic acid, which is applied in the preparation of sugar derivatives, chemical instruments and methods, drug combinations, etc., can solve the damage of skin tissue, the anti-oxidation and anti-free radical ability of tannic acid polyphenol groups and other problems, to achieve the effect of low price, simple and green preparation process, and good adhesion ability

Active Publication Date: 2021-11-26
SHANDONG UNIV OF TRADITIONAL CHINESE MEDICINE
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  • 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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  • A kind of tannic acid-epoxysilane coupling compound and its preparation method
  • A kind of tannic acid-epoxysilane coupling compound and its preparation method
  • A kind of tannic acid-epoxysilane coupling compound and its preparation method

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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-epoxysilane coupling compound and a preparation method thereof, the method comprising the following steps: (1) dissolving tannic acid and trishydroxymethylaminomethane in a solvent; (2) Add γ-glycidyl etheroxypropyltriethoxysilane (KH561) to the solution obtained in step (1); (3) heat and stir the mixed solution obtained in step (2) to obtain a homogeneous solution, and then refrigerate to obtain The tannic acid-epoxy silane coupling compound. The raw materials of the method of the present invention are cheap, the preparation process is simple and green, no metal ions are added, and the obtained product has antibacterial, anti-oxidation, anti-free radical and other properties, has a special fragrance similar to red wine, and can have good adhesion to skin and other materials ability.

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 Patents(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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