Water gel and method for manufacturing the same, as well as water retaining gel mat and method for manufacturing the same

A technology of water-retaining gel and manufacturing method, which is applied to mattresses, absorbent pads, spring mattresses, etc., can solve problems such as poor water-retaining performance, and achieve the effects of high elasticity and increased production speed

Inactive Publication Date: 2012-10-24
HIRAKAWA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the conventional water-retaining gel has the problem of poor water-retaining performance. Since the moisture of the water-retaining gel disappears, the water-retaining gel pad used for the water-retaining gel is difficult to be used as a home bedroom, living room, physiotherapy, moisturizing, medical treatment, etc. and other fields of pad supplies

Method used

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  • Water gel and method for manufacturing the same, as well as water retaining gel mat and method for manufacturing the same
  • Water gel and method for manufacturing the same, as well as water retaining gel mat and method for manufacturing the same
  • Water gel and method for manufacturing the same, as well as water retaining gel mat and method for manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The hydrogel 1 according to Example 1 of the present invention and its production method will be described. The hydrogel 1 involved in the present embodiment 1, via figure 2 Manufactured by the manufacturing steps shown.

[0041] (step 1)

[0042] A base such as sodium hydroxide is dissolved in water or a solvent, and stirred to completely dissolve to form an alkaline solution, which is then cooled.

[0043] (step 2)

[0044] When the temperature of the alkaline solution is lowered to around 25°C, monomers such as acrylic acid, acrylate, and acrylamide are added to the alkaline solution, and stirred and mixed until the solution becomes clear and transparent. Hereinafter, the solution obtained here is simply referred to as "mother liquor". The monomer content in the mother liquor is about 10%-20%.

[0045] (step 3)

[0046] Cool the mother liquor obtained in the second step to below 25°C.

[0047] (step 4)

[0048] The pH of the above-mentioned mother liquor is me...

Embodiment 2

[0079] Hereinafter, the water-retaining gel pad 10 according to Example 2 of the present invention and its manufacturing method will be described.

[0080] The water-retaining gel pad 10 and the water-retaining gel 21 involved in the present embodiment 2, via Figure 4 Manufactured by the manufacturing steps shown.

[0081] (step 1)

[0082] Sodium hydroxide is dissolved in water and a solvent, stirred to completely dissolve, and then cooled. The consumption of water is 10%-30% of the total mass of the reaction system, and the consumption of sodium hydroxide is 5%-20% of the total mass of the reaction system.

[0083] (step 2)

[0084] When the temperature of the sodium hydroxide solution drops to around 25°C, add glycerin, ethyl cellulose, and polyacrylamide as water retention factors into the alkaline solution, and stir and mix until the solution becomes clear and transparent.

[0085] The amount of glycerol is 10% to 30% of the total mass of the reaction system, the amo...

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PUM

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Abstract

The present invention provides a water gel in the form of, for example, flakes with which the defects, such as malodor, discoloration, and hydration, associated with conventional water gels have been eliminated. The water gel 1 according to the present invention is provided by using, as raw materials, an alkaline solution, and a monomer, such as acrylic acid, acrylate, or acrylamide, which is added to the alkaline solution, the content of the monomer being approx. 10% to 20%; making a pH-value adjustment; adding a crosslinking agent, a photoprimer and a photosensitizer; and making a UV photo-curing treatment at a wavelength of 320 nm to 400 nm for photocrosslinking the monomer to produce a water gel in the form of, for example, flakes.

Description

technical field [0001] The present invention relates to hydrogels (or gels) in the form of flakes, their production methods, and water-retaining gel pads that have improved the defects of conventional hydrogels such as unpleasant smell, discoloration, and hydration and methods of manufacture thereof. Background technique [0002] In the past, there were many methods for synthesizing polymer materials, mainly focusing on the synthesis of linear polymers. [0003] In recent years, the synthesis of polymers with special structures and properties by photocrosslinking has attracted people's attention. [0004] Photopolymerization is one of the important means of synthesizing polymer materials. It has the advantages of energy saving, no pollution, fast response, and convenient operation. In addition, due to the emergence of light sources with more stable performance and relatively cheap prices, people's attention has also doubled. . [0005] A lot of research has been done on s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08F220/06C08F220/10C08F220/54C08F2/48C08L33/02C08L33/04C08L33/24
CPCC08L2312/06C08J5/00A61L15/60C08J3/28C08F6/008C08F2/48C08J3/245Y10T428/1334C08L33/08A47C27/00A61G7/05C08F20/10C08J3/075
Inventor 平川尚市
Owner HIRAKAWA CORP
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