JPH0826359B2 - Gel soap - Google Patents

Description

TECHNICAL FIELD The present invention relates to a gel soap used for washing the body such as hands and face.

(Prior Art) Since the introduction of surfactants into the field of soap, various types of soap such as liquid, gel, foam, and spray have been put to practical use in addition to conventional solid soap. However, in spite of the variety of forms, these soaps have not been improved so far in terms of usage.

That is, the operation of the conventional soap when it is used is analyzed as follows.

(A) Take soap on your hand or sponge.

(B) Add water or hot water to the soap taken and rub the part to be washed. (When you wash your hands, you should rub your hands.) (C) Then, wash away the dirt and soap on the wash area with water or hot water. (So-called rinsing operation) (d) After that, the residual moisture is wiped off with a cloth or paper.

As described above, the operations (b) and (c) basically require water or hot water. Therefore, in the case of solid soap, washing cannot be performed without water or hot water. On the other hand, since liquid or gel soap contains a large amount of water, water or hot water is not required separately for the operation of (b), but the conventional liquid or gel soap does not have that of (c). If the action, that is, the so-called rinsing action is not performed, the soap component remains and the hand becomes sticky.
Since the stickiness and the like cannot be eliminated by omitting the operation of step (d) and simply performing the operation of step (d), there is no change in that it cannot be washed in the absence of water or hot water as in the case of solid soap.

(Problems to be Solved by the Invention) As described above, the conventional soap is planned to use water or hot water separately. Therefore, in the place where there is no water or hot water, or where it is difficult to use it. There was a situation that I couldn't wash it.

The present invention has been made in view of the above circumstances, and an object thereof is to separately rinse water (including hot water) for washing and after washing, and therefore, in a place without water or hot water. Another object is to provide a gel soap that can be washed and is convenient to store and carry.

(Means and Actions for Solving Problems) In the present invention, carboxyl vinyl polymer and HLB are 6
~ 14 by blending at least water or water-containing ethanol 96 wt% based on the weight of the nonionic surfactant and soap, so to speak, static state before using,
In other words, it does not show fluidity when it is acting only about the acceleration of gravity (980 dynes), but the washing action,
That is, if a slight deformation stress is applied by rubbing by hand or by rubbing, it can be easily liquefied and washed without replenishing water, and after washing, it is sufficient to wipe it with cloth or paper. The reason is that I did not need rinsing water.

The present inventors have focused on shape retention in the conventional jelly-like or gel-like soap to increase the gel viscosity and blend a surfactant in a high concentration for the purpose of enhancing detergency. As a result, water is required at the time of washing to reduce the gel viscosity, and the washed area becomes sticky if not washed with water after washing, and a high concentration of surfactant remains on the washed area simply by wiping with a cloth. Paying attention to the fact that
As a result of various studies for soaps that can be washed without water, the use of a carboxyvinyl polymer gel allows a large amount of water to be contained to the extent that washing and rinsing water are not required, and this Almost all the amount can be used for washing, and by mixing the above gel with a nonionic surfactant of HLB6 to 14, it has sufficient detergency even in a small amount and is safe even if soap components remain on the washed area after wiping. The present invention has been completed by discovering that it has high properties and does not leave unpleasant stickiness.

That is, when carboxyvinyl polymer is dissolved in water at a concentration of 0.2% or more and neutralized with alkali hydroxide or amine, the water loses fluidity and gels, and it is scooped up on the hands etc. Will be able to. In addition, this gel can be easily liquefied by a washing operation, such as rubbing or scuffing with a hand or the like, and can be easily wiped by wiping with a cloth or paper. Therefore,
By adding an appropriate amount of surfactant having a cleaning action and safety as a cleaning component to this, it is possible to clean without the need to replenish water separately, and after cleaning, simply wash it with a cloth or paper without shaking it with water or hot water. You can get enough gel soap by wiping with.

The amount of the carboxyvinyl polymer used in the present invention is preferably 0.4 to 1.0% by weight based on the total weight of soap. If the content of carboxyvinyl polymer is less than 0.4% by weight, fluidity remains and it cannot be sufficiently scooped with fingers, and if it is more than 1.0% by weight, a slight sticky feeling remains even after wiping, such as fingers. Scraping tends to occur. Also, considering the convenience of manufacturing and storage, the gel viscosity can be measured with a B-type viscometer (No. 4 rotor, 6RPM).
It is preferably 60,000 centipoise or more, but if the compounding amount of the carboxyvinyl polymer is in the above range, a gel having such a viscosity can be obtained.

Further, as the surfactant, basically, a nonionic system having an HLB of 6 to 14 is used. Surfactants other than nonionic surfactants reduce the yield value of carboxyvinyl polymer gels. In particular, the salts of fatty acids used as a general main raw material of soap are strongly alkaline, and it is not preferable because the phenomenon of roughening of the skin occurs only by wiping without washing with water after washing. Alkylbenzene sulfonic acid-based surfactants are also unsuitable because they have strong detergency, but if they are not washed with water after washing, they leave irritation and toxicity. The HLB is suitably in the range of 6 to 14, and if it deviates from this range, the detergency, especially the dispersibility for oil, will decrease. The content of the surfactant is 0.1 to 2%, preferably 0.3 to 1%. If the blending amount exceeds 2%, the hand may become sticky after wiping, and the skin may have an unfavorable effect when it is continuously used.

The gel soap consisting of the above component composition can be sufficiently used as a soap which does not require water or hot water separately, but an appropriate amount of ethanol may be added to improve the feeling of cooling after wiping, and Preservatives, coloring agents, flavoring agents and the like may be added as necessary in order to improve the usefulness of the product. Further, a deodorant can be added to clean a portion which is soiled with a substance having an offensive odor. When compounding a deodorant, select a deodorant that does not react with other components to change the physical properties or performance of soap or reduce its own deodorizing ability. According to the results of studies by the inventors, it is most preferable to use a plant extract containing flavonoids and polyphenolic glycosides as main components as a deodorant. Flavonoids and polyphenolic glycosides are substances commonly contained in many plants, but these are odorous components (substantial substances) emitted by the secretions of living organisms and the decay of organisms by microorganisms. Is a nitrogen-containing compound and a sulfur-containing compound) and has the property of deodorizing by binding. Therefore, all plant extracts containing flavonoids and polyphenolic glycosides have deodorizing ability, but their content concentration is high,
A tea extract is an example of an extract that has no odor itself, has no specific physiological action on the human body, and is currently mass-produced and industrially usable. Contains a large amount of water, has a high yield value for deformation stress of its own weight, and is in a so-called static state before it is used for cleaning, that is, about the acceleration of gravity (980 dyne). Since it has no fluidity when it is only working, it can be scooped in a state where it is raised in the hand etc. Moreover, this gel soap has a large thixotropy and has the property of rapidly decreasing the viscosity when a stress equal to or higher than the yield value is applied, and therefore, when the washing operation (moving, rubbing, etc.) is performed, Liquefies easily at the wash site. Therefore, unlike liquid soap, water does not run off when you scoop it with your hands, etc., and almost all of the water content and cleaning ingredients can be used for cleaning the area to be washed. Without supplying, the warm washing can be performed sufficiently just like the case of washing with conventional solid soap using water or hot water. In addition, the gel-like soap of the present invention has a cleaning component to be blended which is limited to an amount necessary and sufficient for cleaning since almost all of the cleaning component can be utilized for cleaning. It can be easily wiped off with a cloth or paper after washing, and it does not leave a sticky feeling after drying, so there is no need to rinse it with water or hot water after washing. According to experiments, the amount of soap remaining on the washed area after wiping is generally 20 mg / cm ² or less. Therefore,
The amount of carboxyvinyl polymer and surfactant contained in this residual soap content and remaining in the washed area after wiping is equal to or greater than the amount of those components blended in ordinary cosmetics and applied to the skin surface. It becomes the following, and there is no problem in terms of safety.

(Example) Next, an example is shown.

Example 1. 5 g of carboxyvinyl polymer (based on cosmetic raw material) and 5 g of nonionic surfactant (polyoxyethylene lauryl ether) are dissolved in 900 ml of water. Separately, 4.5 g of triisopropanolamine and 2 g of methyl paraoxybenzoate are dissolved in 100 ml of ethanol, and this solution is added little by little to the above aqueous solution of carboxyvinyl polymer with vigorous stirring to obtain a gel soap having no fluidity.

The soap obtained according to Example 1 was placed on a hand soiled with a scooping oil in a state of being heaped up. Next, as a cleaning operation, both hands were rubbed, and both hands were wiped with a cloth after cleaning, the soap and dirt were removed cleanly, and no discomfort such as a foreign body feeling or stickiness was left behind, and a refreshing feeling could be obtained.

Example 2 5 g of carboxyvinyl polymer, 5 g of a nonionic surfactant (the same as in Example 1) and 100 g of 3% aqueous tea extract are dissolved in water, and water is added to bring the total amount to 900 ml. Separately, 4.5 g of triisopropanolamine and 2 g of methyl paraoxine benzoate are dissolved in 100 ml of ethanol, and this solution is added little by little to the above aqueous solution of carboxyvinyl polymer with vigorous stirring to obtain a gel soap having no fluidity.

When the soap obtained in Example 2 was put on a hand that had become odorous and was washed with fresh fish and wiped with a tissue paper, the odor of the hand disappeared.

(Effects of the Invention) As described above, according to the present invention, since water for rinsing is not required after washing as well as during washing, it can be easily used to wash off stains even in the absence of water. You can Moreover, the soap of the present invention is in the form of gel without fluidity and can be stored in a tube or can be placed in an appropriate container, which is convenient for storage and portability. Therefore, for example, it is possible to carry a hike or a drive, or place it in a corner of a factory or a construction site to wash light fingers and the like.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI technical display location C11D 3:37) (56) References JP 62-141100 (JP, A) JP 58 -113298 (JP, A) JP-A-56-47477 (JP, A)

Claims (4)

[Claims] 1. A carboxyl vinyl polymer, a nonionic surfactant of HLB 6 to 14 and at least 96% by weight of water or hydrous ethanol based on the weight of soap, and does not require separate washing and rinsing water. Gel soap characterized in that. 2. Carboxyl vinyl polymer is added in an amount of 0.4 to 1.0% by weight, and HLB6 to 14 nonionic surfactants are added in an amount of 0.1 to 2% by weight based on the weight of soap.
Claim 1 characterized by being in the range of 7.5
The gel soap according to the item. 3. The gel soap according to claim 1, further comprising a deodorant. 4. The gel soap according to claim 3, wherein the deodorant is a plant extract containing flavonoids and polyphenolic glycosides as main components.