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Methods of making hydrogels

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: 2022-06-21
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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  • Methods of making hydrogels
  • Methods of making hydrogels
  • Methods of making hydrogels

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Experimental program
Comparison scheme
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Embodiment approach

[0034] The present invention relates to a method for producing a hydrogel.

[0035] In the production method of the hydrogel of the present invention, water, additives, polyacrylate, glycerin, and polyacrylate can be used. As the additives, gelation rate modifiers, metal ion cross-linking agents and / or adsorption aids may be used, but not limited thereto.

[0036] Purified water can be used for water, and 75 to 95% by weight can be used in 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 becomes more than 100,000 cps at 30°C while the cross-linked high molecular weight is relatively increased. On the other hand, when the amount of water used is higher than 95% by weight, the viscosity of the cross-linked high molecular weight is relatively decreased, and the osmotic pressure and the absorption force are decreased.

[0037] With respect to 100 parts by weight of water, 0.01-4 parts by weigh...

Embodiment

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

[0076] After that, 12 g of polyacrylate was charged, 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 was used as the polyacrylate.

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

[0078] After the third mixed solution was reacted at 70°C at 300 rpm for 20 minutes, a hydrogel was produced at 60°C at 300 rpm for 20 minutes.

[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 producing a hydrogel, comprising: mixing an additive containing at least one of a gelation speed regulator, a metal ion cross-linking agent and an adsorption auxiliary agent and water to prepare a first mixed solution; mixing The step of preparing a second mixed solution from the first mixed solution and polyacrylate; the step of mixing the mixture of glycerin and polyacrylate with the second mixed solution to prepare a third mixed solution; reacting the third mixed solution to prepare water A step of gel solution; a step of drying said hydrogel solution to obtain a hydrogel.

Description

technical field [0001] The present invention relates to a method for producing a hydrogel. Background technique [0002] Polymer hydrogels are generally widely used in diapers, contact lenses, medical electrodes, cell culture, and as special purposes, they are also used as plastic materials, soil moisture preservation, and bandages for burn wounds. [0003] This is a hydrophilic polymer that is cross-linked by cohesive force such as covalent bonds, hydrogen bonds, van der waals bonds, or physical bonds. Substances with a polymer network structure. In this state of absorbing water, it has properties similar to living tissue. [0004] Substances containing a hydrophobic group added to a macromolecule of a hydrophilic group are called amphiphilic hydrogels or amphiphilic macromolecular bonds (APN). Swelling, and when swollen in an aqueous state, the absorption of hydrophobic substances increases. [0005] The formed hydrogels are quite strong up to 90°C and rapidly rearrang...

Claims

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Application Information

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