Temperature sensitive state-changing hydrogel composition and method for preparation

Abstract

This invention is about temperature sensitive state-changing hydrogel composition and its method of production that consists of Branched Gel Polymer 1-10 wt %, Electrolyte Gel Polymer 0.5-5 wt %, Skin-friendly Enhancements 0.5-5 wt %, Natural Bio Material 1-10 wt %, Aliphatic Polyol 3-30 wt %, Functional Additive 1-10 wt % and water 30-93 wt %. Temperature sensitive hydrogel composition is produced at temperature between 10° C. and 50° C., where hydrogel transforms to a fluid state. When this invented hydrogel composition is contacted with skin, it transforms into a fluid state owing to body temperature. Then the ingredient or medication in hydrogel can efficiently and evenly penetrate into the skin.

Description

SHORT DESCRIPTION OF FIGURES [0001]FIG. 1 shows the viscosity of the Hydrogel composition measured at various temperatures. [0002]FIG. 2 shows that the hydrogel is formed by two gel type Polymers. Part (a) shows that physical bond of the branched polymer and electrical bond of the electrolyte gel polymer exists together. Part (b) shows the fluid state of the polymers where electrical bond of the electrolyte gel polymer exists but the physical bond of the branched gel polymer does not exist. [0003]FIG. 3 shows the skin care hydrogel sheet that was produced using invented hydrogel composition. Part (a) is the base that is made out of rayon textile and part (b) is the invented Hydrogel.DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention Technical Field and Traditional Technique [0004] This invention is about the temperature sensitive state-changing Hydrogel composition and the method for its preparation. In detail, it is the Hydrogel composition and its method of production ...

AI Technical Summary

Benefits of technology

[0028] The characteristic of temperature sensitive state-changing hydrogel composition is that it transforms from gel to liquid state at an ideal temperature of 30-40° C., generally 10-50° C. Because it enhances the acceptance level between hydrogel and skin, it delivers beauty substance or medicine evenly and rapidly.

[0033] Especially, when this invented Hydrogel is used in beauty care in a form of hydrogel sheet or patch, the body temperature will change the hydrogel state to liquid so that it becomes a flowable composition. This hydrogel will automatically adhere and penetrate into the skin and increase the acceptance level greatly.

Problems solved by technology

When hydrogel is in the gel state, it takes relatively long time for the medicine to penetrate into skin, and the drug could only be delivered to the limited area where the hydrogel directly contacts the skin.

However, even though hydrogel is used, there are limitations when hydrogel is in the form of gel.

This limitation causes delay in speed and the quantity of the drug delivery.

This means, greater the acceptances faster and more effective delivery of the medicine, and lesser the acceptances slower and less effective delivery of the medicine.

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