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Hydrogel-forming composition and high strength hydrogel formed from same

一种水凝胶、组合物的技术，应用在具有自支撑性的水凝胶领域，能够解决粘度变高、水凝胶制作困难等问题，达到安全性高的效果

Active Publication Date: 2017-12-01
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the concentration of each component for strengthening the gel is increased, the viscosity of the hydrogel-forming composition becomes high, and the hydrogel-forming composition having increased the concentration of each component is mixed and coagulated. When gelling, its viscosity further increases
Therefore, in the organic-inorganic composite hydrogel disclosed in Patent Document 4, if the concentration of each component for strengthening the gel is increased, the production of the hydrogel may become very difficult.

Method used

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  • Hydrogel-forming composition and high strength hydrogel formed from same
  • Hydrogel-forming composition and high strength hydrogel formed from same
  • Hydrogel-forming composition and high strength hydrogel formed from same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0124] [Manufacture example 1: Manufacture of 2% sodium polyacrylate aqueous solution with addition of 1% magnesium chloride]

[0125] Dissolve 1 part of magnesium chloride hexahydrate (manufactured by Junsei Chemical Co., Ltd.) in 97 parts of water, then add 2 parts of sodium polyacrylate (manufactured by Wako Pure Chemical Industries, Ltd.: polymerization degree 22,000 to 70,000), and stir at 25°C until Form a homogeneous solution and obtain the target substance.

manufacture example 2

[0126] [Manufacturing Example 2: Manufacture of 10% Raponite XLG Water Dispersion Added with Sodium Hydroxyethylidene Diphosphonate]

[0127] 0.5 part of disodium hydroxyethylidene diphosphonate (manufactured by Tokyo Chemical Industry Co., Ltd.) was dissolved in 89.5 parts of water, and 10 parts of Raponite XLG (manufactured by Rockwood Adidas Co., Ltd.) was added thereto, and stirred at 25° C. for 24 hours, Get the target.

Embodiment 1

[0128] [Example 1: Production of 5% raponite XLG hydrogel to which sodium hydroxyethylidene diphosphonate was added]

[0129] Mix 50 parts of the 2% sodium polyacrylate aqueous solution with 1% magnesium chloride added in Production Example 1, and 50 parts of the 10% Raponite XLG aqueous dispersion with sodium hydroxyethylidene diphosphonate added in Production Example 2, and use a magnetic stirrer to Stir for 1 minute. After standing at room temperature for 48 hours, a hydrogel was obtained.

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Abstract

[Problem] To provide: a self-supporting hydrogel which is highly strengthened and is able to be produced merely by mixing at room temperature; and a method for producing this hydrogel. [Solution] A hydrogel-forming composition which is capable of forming a self-supporting hydrogel, and which is characterized by containing (A) a water-soluble organic polymer having an organic acid structure, an organic acid salt structure or an organic acid anion structure, (B) a silicate salt, (C) a compound having a diphosphonic acid structure represented by formula (1) (wherein each of R1 and R2 independently represents a specific substituent; each of X1 and X2 independently represents a single bond or a linking group; and n represents an integer of 1-5) or a salt thereof, and (D) a compound which has or generates a divalent or higher-valent positive charge; a hydrogel which is formed from the composition; and a method for producing this hydrogel.

Description

technical field [0001] The present invention relates to a hydrogel, and more specifically, to a hydrogel-forming composition and a highly strengthened self-supporting hydrogel obtained by using the composition. Background technique [0002] Hydrogels have attracted attention in recent years from the viewpoint that they are soft material materials with high biocompatibility and low environmental load because water is the main component. [0003] An organic-inorganic composite water gel obtained by polymerization of (meth)acrylamide derivatives in the coexistence of layered clay minerals uniformly dispersed in water is reported as a self-supporting high-strength hydrogel. Gel (Patent Document 1). In addition, as a similar report example, an organic-inorganic composite hydrogel having a polymer containing a part of carboxylate or carboxyl anion structure in poly(meth)acrylamide and clay mineral is also known (Patent Document 2 ). In these report examples, polymers formed by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/14C08L33/02C08K3/34C08K5/5317C08J3/075
CPCC08K5/5317C08L101/14C08J3/075C08J2333/02C08K3/346C08K2003/166C08K3/16C09J133/02C08K3/34C08L33/02C08J2333/08
Inventor 工藤佳宏
Owner NISSAN CHEM CORP
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