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Method for preparing hydrogel

A manufacturing method and hydrogel technology, applied in the field of hydrogel manufacturing, can solve the problems of difficult adjustment of adhesion force, limited input of active ingredients, difficulty in obtaining hydrogel, etc., and achieve the effect of easy adjustment

Active Publication Date: 2019-12-06
BL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above prior art, it is difficult to adjust viscosity, adhesive force, and tension, and there are limitations in the input of active ingredients, and it is difficult to obtain hydrogel with desired physical properties.

Method used

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  • Method for preparing hydrogel
  • Method for preparing hydrogel

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Embodiment approach

[0034] The present invention relates to methods for producing hydrogels.

[0035] In the method for producing the hydrogel of the present invention, water, additives, polyacrylate, glycerin, and polyacrylate can be used. As the additives, a gelation rate modifier, a metal ion crosslinking agent, and / or an adsorption auxiliary agent may be used, but not limited thereto.

[0036] Purified water can be used as water, and it can be used in 75 to 95% by weight of the entire formulation. When the amount of water used is less than 75% by weight, there is a problem that the viscosity of the hydrogel at 30° C. exceeds 100,000 cps while the cross-linked high molecular weight increases relatively. On the other hand, if the amount of water used is higher than 95% by weight, there is a problem that the cross-linked high molecular weight is relatively reduced, the viscosity is reduced, and the osmotic pressure or absorption force is reduced.

[0037] With respect to 100 parts by weight of...

Embodiment

[0075] Weigh 0.7g of EDTA, 0.6g of AlCl 3 and 0.1 g of kaolin were put into a paper filter into 500 g of purified water, and mixed at 200 rpm for 20 minutes at 60° C. to obtain a first mixed solution.

[0076] Thereafter, 12 g of polyacrylate was added, the temperature was increased by 70° C., and the mixture was mixed at 300 rpm for 30 minutes to obtain a second mixed solution. Sodium acrylate is used as polyacrylate.

[0077] Next, after mixing 20 g of glycerin and 2 g of polyacrylate and fully dissolving them, a second mixed solution was added to obtain a third mixed solution.

[0078] The third mixed solution was reacted at 300 rpm at 70° C. for 20 minutes, and then reacted at 300 rpm at 60° C. for 20 minutes to produce a hydrogel.

[0079] It was then thermally cured at 120°C for 20 minutes and at 30°C for 10 minutes.

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Abstract

The present invention relates to a method for preparing a hydrogel, the method comprising the steps of: preparing a first mixture solution by mixing water and an additive comprising at least any one of a gelation rate controller, a metal ion cross-linking agent and an adsorption aid; preparing a second mixture solution by mixing the first mixture solution and a polyacrylate salt; preparing a thirdmixture solution by mixing the second mixture solution and a mixture of glycerin and a polyacrylate; preparing a hydrogel solution by causing a reaction in the third mixture solution; and obtaining ahydrogel by drying the hydrogel solution.

Description

technical field [0001] The present invention relates to methods for producing hydrogels. Background technique [0002] Macromolecule hydrogel (hydrogel) is generally widely used in diapers, contact lenses, medical electrodes, cell culture, and as a special purpose, it is also used for plastic materials or soil moisture preservation, and bandages for burn wounds. [0003] This is a hydrophilic polymer that is cross-linked through cohesive forces such as covalent bonds, hydrogen bonds, van der Waals bonds, or physical bonds. A substance with a polymer network structure. In such a state of absorbing water, it has characteristics similar to living tissue. [0004] A substance comprising a polymer with a hydrophobic group added to a hydrophilic group is called an amphiphilic hydrogel (hydrogel) or an amphiphilic polymer bond (APN). Swells, and when swollen in the water phase state, the absorption of hydrophobic substances increases. [0005] The formed hydrogel is quite stron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L33/04C08J3/24C08K3/34
CPCC08J3/075C08J3/24C08J2333/02C08L33/04C08K3/34
Inventor 裵镇佑
Owner BL TECH INC