JP2621246B2 - Denture cleaning composition - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a denture cleaning composition which changes the color of a cleaning solution in a short time even under neutral conditions and informs a user of an appropriate cleaning end time. About things.

2. Related Art Problems to be Solved by the Invention and the Invention It is known that stains on dentures include many stains derived from propagation of microorganisms in the oral cavity, in addition to coloring matters caused by coffee, tea, tobacco, and the like. . In order to remove these denture stains, various cleaning agents having a bleaching / bactericidal action have been used. In this case, the cleaning time of the denture varies depending on the degree of dirt. However, when the denture is lightly stained, the effect of sterilizing the cleaning agent and removing the contaminants is usually sufficiently exhibited in about 5 to 60 minutes to complete the cleaning. .

Therefore, a denture cleaner containing a tar dye has been proposed so that the user can clearly know the cleaning end time (JP-A-62-41644). This denture cleaning agent is used by dissolving in water at a pH of 8 or more. Under such weak alkaline to strongly alkaline conditions, the tar dye is decomposed by the oxidizing action of the peroxide in the detergent component. The completion of cleaning is notified by utilizing the fact that the color of the cleaning solution changes or disappears.

On the other hand, in recent years, there has been a demand for a denture cleaning agent having a good feeling in use.

However, most of the denture cleaners that are widely used at present are alkaline cleaners, and when dissolved in water for use, the hands become slimy and give discomfort, and many of them are inferior in use feeling. In addition, when the pH of the detergent solution is set to a neutral region in order to improve the nullness of the alkaline detergent solution, in the detergent containing the tar dye, oxidation of the tar dye is less likely to occur, resulting in color change. It takes a long time of 3 to 5 hours, and it is difficult to clearly inform the user of the cleaning end time especially when cleaning a lightly denture that can be cleaned and removed in about 5 to 60 minutes. Becomes

The present invention has been made in view of the above circumstances, even in the case of cleaning a lightly soiled denture in the neutral region, and properly inform the user of the cleaning end time, since it can be used in the neutral region, An object of the present invention is to provide a denture cleaning composition capable of preventing swelling and improving the feeling of use.

Means and Action for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, it was found that laccaic acid, which is a water-soluble natural dye, was produced in the presence of a peroxide oxidizing agent. Indicator that the color tone of the solution changes from red to colorless in a short time of about 5 to 60 minutes after being oxidized and decomposed even in the solution in the neutral region, and therefore, raccaic acid indicates the completion of washing of the neutral denture cleaning solution. Very effective, even if the denture cleaning composition using laccaic acid together with an oxidizing agent is prepared to be in a neutral region when dissolved in water, the solution discolors in a short time and is relatively Even when cleaning dentures with light soiling, it is possible to accurately inform the user of the end time of cleaning the dentures, and when the cleaning composition is dissolved in water, the pH can be set to the neutral region. Nursing at the time of use It was found that can give a good feeling without, the present invention has been accomplished.

 Hereinafter, the present invention will be described in more detail.

The denture cleaning composition according to the present invention contains laccaic acid and an oxidizing agent, and is usually formed in a solid form such as powder, granules, and tablets, and is used by dissolving in water at the time of use. .

Here, the raccaic acid compounded as an indicator in the denture cleaning composition of the present invention is represented by the following formula (1) It is a kind of natural anthraquinone derivative shown in the following. It is extracted from female females of Lac chinensis, an insect produced in Thailand and India, and is used as a natural red pigment as a coloring agent for processed jams, tomato products, and bean paste. Is what it is.

Although the amount of laccaic acid is not particularly limited, it is 30 ppm to 0.2% by weight based on the total amount of the denture cleaning composition,
It is preferred to be 50 ppm to 0.1% by weight. If the content of raccaic acid is less than 30 ppm, the color of the detergent solution may be light at the time of use and discoloration of the solution may be unclear. If it is more than 0.2% by weight, the color of the detergent solution may become too dark and undesirably colored. In addition to providing a pleasant sensation, it may take a long time under normal temperature conditions for the solution to change color.

If necessary, the composition of the present invention may contain other dyes such as tar dyes such as phloxine, acid red, brilliant blue, tartrazine and uranine together with the above-mentioned laccaic acid.

The oxidizing agent used in the composition of the present invention is not particularly limited as long as it has an oxidizing effect, but a compound used as an oxygen bleach or a chlorine bleach is preferably used. Specific examples of the oxidizing agent include oxygen-based bleaching agents such as sodium percarbonate, sodium peroxide, sodium persulfate, potassium hydrogen hydrogen persulfate (trade name: Oxone), sodium perborate, and hypochlorite. Chlorine bleaching agents such as sodium acid, di or sodium trichlorocyanurate are exemplified, and among them, it is preferable to use various peroxide oxidizing agents used as oxygen bleaching agents. These oxidizing agents may be used alone or in combination of two or more.

In this case, the compounding amount of the oxidizing agent is not particularly limited, and is appropriately set according to the dosage form of the composition. For example, when the composition of the present invention is formed into a tablet, a sufficient amount of the excipient can be compounded. The amount of the oxidizing agent can be adjusted as described above, but the amount of the oxidizing agent is usually 10 to 90 with respect to the total amount of the components of the composition.
%, In particular 25 to 60% by weight. Here, in the composition of the present invention, by appropriately adjusting the amount of the oxidizing agent according to the amount of the laccaic acid,
The discoloration time of the detergent solution can be easily adjusted, but the mixing ratio of raccaic acid to the oxidizing agent is 1: 250 by weight.
11: 10,000 is preferred. By adjusting the blending amount of raccaic acid and the oxidizing agent in this way, the discoloration time of the detergent solution can be surely adjusted to a short time of about 5 to 60 minutes.

The denture cleanser of the present invention, in addition to the above-described components, further, if necessary, an alkalizing agent, a neutralizing agent, a surfactant, a binder, a disintegration accelerator, dextranase, mutanase, inulase, alkaline protease, Components commonly used in denture cleaning agents, such as oxygen such as β-1,3-D-glucanase and flavors, can be added. In particular, when a carbonate such as sodium hydrogen carbonate, sodium carbonate, potassium hydrogen carbonate or the like or an acid agent such as citric acid anhydride, succinic acid, malic acid or the like is used, foaming occurs during the dissolution, and convection occurs due to the foam, thereby dissolving the detergent. Can be promoted.

The denture cleaning composition according to the present invention is usually prepared in a solid form, and is dissolved in about 10 to 50 times by weight of water for use, and the temperature of the aqueous solution is kept at room temperature, particularly about 20 to 40 ° C. use.

At this time, the pH of the detergent solution is not particularly limited. However, in the present invention, discoloration of the detergent solution can occur in a short time even in a neutral pH range. To 5.5 to 7.5, especially around 6.

Effect of the Invention As described above, the denture cleaning composition of the present invention is:
Even when the pH of the detergent solution is in the neutral range, the color of the solution changes color in a short time, and when cleaning a relatively lightly contaminated denture, the user can be properly notified of the cleaning end time of the denture. ,
In addition, since the pH of the detergent solution can be set to a neutral range, the user can be provided with a good feeling of use without swelling during use.

 Next, an experimental example will be described.

(Experimental example)

According to a conventional method, the following components were dissolved in 100 ml of water to prepare a denture cleaning composition (pH 6.0).

Denture cleansing ingredients Laccanic acid Amount shown in Table 1 Potassium hydrogen persulfate 1.2 g Sodium bicarbonate 0.2 g This solution was kept at 25 ° C., and the time required for discoloration (red → colorless) was measured visually.

 The results are shown in Table 1.

From the results in Table 1, the denture cleanser solution according to the present invention is:
It was confirmed that the color changed easily in a short time, and the color change time could be easily adjusted by appropriately changing the amount of laccaic acid.

Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to the following Examples.

[Examples 1 to 8] Denture cleansing agents (powder or granules, tablets) having the formulations shown in Table 2 were prepared. In addition, about a tablet, after mixing each component uniformly, it shape | molded into the tablet of 25 mm in diameter by the tableting pressure of 8 tons.

Then, 1 packet or 1 tablet of this denture cleaner (both 3.0
g) was dissolved in 150 ml of water at the temperature shown in Table 2 to obtain a detergent solution, and the time required for discoloration of the detergent solution was visually measured.

 The results are shown in Table 2.

From the results in Table 2, it was confirmed that the color of the product of the present invention changed in a short time.

In addition, all of the detergent solutions in which the product of the present invention was dissolved were free of slime and had a good feeling of use.

Claims (3)

(57) [Claims] 1. A denture cleansing composition comprising a mixture of raccaic acid and an oxidizing agent. 2. The denture cleaning composition according to claim 1, wherein the composition has a pH of 5.5 to 7.5 when dissolved in water. 3. The denture cleaning composition according to claim 1, wherein the oxidizing agent is a peroxide-based oxidizing agent.