JPS6325040B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a hand cleaner that cleans hands without washing with water. BACKGROUND ART Conventionally, as a cleaner that removes dirt from hands without washing with water, a paste-like hand cleaner in which a water-soluble resin such as polyvinyl alcohol or polyvinylpyrrolidone is dissolved in a mixed solvent of water and alcohol is known. If you apply an appropriate amount of this hand cleaner on your hands and rub it in, the solvent component will evaporate and the resin component will absorb the dirt on your hands and turn it into eraser crumbs. You can clean your hands by simply wiping it off. This type of hand cleaner is convenient because it can be used not only to clean hands in places where there is no water, but also to remove dirt such as oil stains that are difficult to remove with water washing, before washing. be. Problems to be Solved by the Invention However, in the conventional hand cleaners mentioned above, the resin component tends to stick too strongly, and as a result, after the solvent component evaporates, the rice cake sticks to the hair on the back of the hand and cannot be easily removed. There is a difficulty that
Especially for people with thick hair, there was a problem in that when the hair was removed, the hair was pulled, which caused a lot of pain.
Furthermore, even if the dirt could be removed, the odor attached to the hands could not be completely removed, resulting in dissatisfaction with the feeling of cleanliness after using the hand cleaner. Furthermore, the transparency of the hand cleaner was insufficient, and there was room for improvement in this respect as well. An object of the present invention is to provide an excellent hand cleaner that solves the problems of the conventional methods as described above. Means for Solving the Problems The hand cleaner of the present invention comprises carboxyvinyl polymer 0.2 to 6% by weight Ethanol 30 to 75% by weight Water 20 to 65% by weight Carbonization obtained by carbonizing mainly the leaves of tea under reduced pressure. (hereinafter simply referred to as tea leaf dry distillate)
0.01 to 5% by weight, and due to the cooperative effect of using carboxyvinyl polymer as the polymer component and tea leaf dry distillate as the deodorizing component, the above-mentioned problems can be solved. I was able to resolve the issues all at once. The carboxyvinyl polymer in the present invention refers to a high molecular weight vinyl polymer having an active carboxy group, and is commercially available as Carbopol 934, Carbopol 940, and Carbopol 941 from BF Gutdrich Chemical Co., Ltd. in the United States. Neutralize with an appropriate base before use.
Also, the company's Carbopol 960 and Carbopol 961 have already been neutralized. This carboxyvinyl polymer mainly plays the role of adsorbing dirt,
By applying the hand cleaner to your hands and rubbing them together, the solvent component evaporates and can be easily brushed off by rolling it into eraser crumbs. Ethanol is one of the solvent components, and it dissolves the carboxyvinyl polymer together with water, keeping the entire product moderately soft, making it easy to apply to hands, and also eluting dirt from hands when applying hand cleaner to hands. At the same time, it also plays a role in disinfecting the hands, and it also plays a role in giving a refreshing feeling when hand cleaner is applied to the hands. Water is also one of the solvent components, and it dissolves the carboxyvinyl polymer together with ethanol, keeping the overall softness to an appropriate level, making it easier to apply to the hands, and also preventing dirt from leaching out when the hand cleaner is applied to the hands. It plays a role in promoting the solvent, and also plays a role in controlling the volatilization of the solvent, which is too fast for ethanol alone. Tea leaf dry distillate mainly plays the role of eliminating odors that are strongly attached to hands. The boiling point varies depending on the degree of reduced pressure, but a boiling point of 180 to 200°C at 20 mmHg is suitable for the purpose of the present invention. The main roles of each component constituting the hand cleaner of the present invention have been described individually above, but in reality, these components interact with each other to provide the optimal function as a hand cleaner as a whole. Even if one of these components is missing, a hand cleaner with the desired performance cannot be obtained. The blending amount of each of the above components is selected from the following ranges. Carboxy vinyl polymer 0.2-6% by weight Ethanol 30-75% by weight Water 20-65% by weight Tea leaf dry distillate 0.01-5% by weight When the amount of carboxyvinyl polymer is less than this range, the stain removal effect will be insufficient; When the amount exceeds the range, the whole becomes extremely viscous, making it difficult to apply to the hands, and also difficult to wipe off from the hands after the solvent component evaporates. If the amount of ethanol is less than this range, the cooling sensation and disinfectant effect when applied to the hands will be insufficient, and the volatility of the solvent component will also be poor. If you remove too much, your hands may become rough, and the solvent components will volatilize too quickly, resulting in incomplete adsorption of dirt by the carboxyvinyl polymer. If the amount of water is less than this range, the effect of promoting the elution of dirt from hands will be insufficient, while if it is more than this range, the volatilization of the solvent component will be excessively slow, resulting in persistent stickiness and poor wipe-off properties. becomes inferior. If the amount of tea leaf dry distillate is less than this range, even if the dirt appears to be removed, the odor of the dirt components will remain on your hands and you will not feel clean, while even if it is more than this range, the deodorizing effect will still be effective. The cost will not be higher than that, and it will be disadvantageous in terms of cost. Furthermore, carboxyvinyl polymer and tea leaf dry distillate have extremely low toxicity or irritation in terms of acute oral toxicity, subacute oral toxicity, chronic oral toxicity, and skin irritation, and there are no problems when used as a hand cleaner. does not occur. In addition to the above-mentioned ingredients, the hand cleaner of the present invention contains fragrances, colorants, neutralizing agents, surfactants, water,
Solvents other than ethanol, water-soluble or ethanol-soluble polymers other than carboxyvinyl polymers, etc. may be blended as necessary. Function: By uniformly mixing the above components, a paste-like hand cleaner with a high degree of transparency can be obtained. If you apply this on your hands and rub them together, you will get a refreshing feeling by removing dirt and volatilizing the solvent (especially ethanol), and the carboxyvinyl polymer will absorb the dirt on your hands and curl up into eraser crumbs.
It can be easily brushed off. Moreover, not only the dirt components but also the odor that is firmly attached to the hands are completely erased. Effects of the Invention The hand cleaner of the present invention can remove dirt from hands without washing with water. It has excellent transparency and a sense of cleanliness. Excellent dirt removal effect. It spreads well when applied to the hands, and provides a refreshing feeling. It has a sterilizing and disinfecting effect. It is easy to remove the rice dregs after the solvent component has evaporated, and there is no tension on the hair caused by the polymer component. Not only does it remove dirt, but it also completely removes odors from your hands. A clean feeling after use is preferred. It satisfies all the requirements for a hand cleaner, and is highly practical. Industrial Applicability The hand cleaner of the present invention is suitable for cleaning hands (and feet and face) in places where there is no water, such as on a trip or vacation destination, in a car, or while in a hospital.
It can also be used prior to or in place of washing to remove dirt and odors that are difficult to remove with water, such as dirt from agricultural work, civil engineering work, fish equipment/animal handling work, cleaning work, etc. Examples Next, the hand cleaner of the present invention will be further explained with reference to Examples. Example 1 A paste-like hand cleaner with excellent transparency was obtained by uniformly mixing the following components at room temperature, and the product was prepared by filling it into a wide robin. Carboxyvinyl polymer (Carbopol 940 manufactured by BF Gutdrich Chemical Co., USA)
2% by weight Ethanol 60% by weight Water 37% by weight 4% propylene glycol solution of dry distilled tea leaf powder at 180-200°C/20mmHg 1% by weight Using this hand cleaner, the effectiveness of removing various stains was investigated. In the test, after work that involved dirty hands, we applied hand cleaner to our hands, scrubbed them, then rinsed them off, then applied hand cleaner again and performed the same operation. The results are shown in Table 1. Note that the comparative example is a case where a commercially available hand cleaner (using polyvinyl alcohol as a resin component and containing no tea leaf dry distillate) is used. The codes in Table 1 are as follows. A: Effect on removing dirt B: Spreadability when applied to hands C: Refreshing feeling when applied to hands D: Ease of removing rice dregs after solvent volatilization E: Pain due to pulling of hair when wiping away F: Stiffness on hands Odor removal ability G Cleanliness after use

[Table] Example 2 The following components were mixed uniformly at room temperature to obtain a paste-like hand cleaner with excellent transparency, which was packed into a tube to form a product. Carboxyvinyl polymer (Carbopol 941 manufactured by BF Gutdrich Chemical Co., USA)
1.5% by weight Ethanol 65% by weight Water 33% by weight 5% propylene glycol solution of dry distilled tea leaf powder at 180-200℃/20mmHg 0.5% by weight Using this hand cleaner, remove various stains in the same manner as in Example 1. The removal effect was investigated. The results are shown in Table 2. The comparative example is the same as above.

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Claims (1)

[Scope of Claims] 1 Carboxyvinyl polymer 0.2-6% by weight Ethanol 30-75% by weight Water 20-65% by weight Carbonized distillate obtained by carbonizing mainly the leaves of tea under reduced pressure 0.01-5% by weight hand cleaner.