JP2003212753A - Scrubbing detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slurry scrubbing detergent composition having excellent scrubbing effects and a good feeling of use, a high fluidity and settling stability. <P>SOLUTION: This slurry scrubbing detergent composition is a slurry comprising sodium hydrogencarbonate particles with a particle size distribution having 20-90 μm average particle diameter, preferably having two peaks of 35-60 μm particle diameter and 250-350 μm particle diameter and containing ≤10 mass% of particles having ≤10 μm particle diameter and ≤15 mass% particles having ≥300 μm particle diameter, a fatty acid or a fatty acid salt and a dispersion medium. The viscosity of the slurry scrubbing detergent composition is 5,000-50,000 cP. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention has high fluidity and sedimentation stability, and has an excellent scrubbing effect in use.
The present invention also relates to a slurry-like scrubbing detergent composition that can be quickly washed off after use.

[0002]

2. Description of the Related Art With the recent increasing tendency toward cleanliness, so-called scrubs having not only a large detergency but also a physical detergency, especially for cleaning agents such as face wash, hair wash, body shampoo and hand shampoo. Detergents have been proposed and are already in use. This scrub cleansing agent contains scrub particles having a certain size and hardness, and the action of the scrub particles at the time of use removes dirt on pores of skin, removal of skin fat, prevention of oil floating, and It is said that the removal of old keratin and the promotion of metabolism due to the massage effect on the skin can be achieved.

The scrub particles required for such a scrub cleaning agent are mainly the skin of the human body, and of course, the scrub particles have safety not to damage or irritate the skin. , Its intended cleaning effect and massage effect vary greatly depending on its size, hardness, elasticity, etc.
The choice is difficult. In addition, the scrub cleaning agent is required to have an appropriate fluidity at the time of use, and is also required to have a large settling stability so that the scrub particles do not separate even when stored for a long period of time. Further, since the scrub cleaning agent is finally mixed in the waste water and discarded, it is required that it is not a substance causing environmental pollution.

On the other hand, conventionally, as scrub particles, oatmeal, walnut, silica, alumina, polyethylene,
Natural or synthetic materials such as polypropylene and polystyrene have been widely proposed. However, these scrub particles do not fully satisfy the properties required for the above-mentioned scrub cleaner, and further improvement is required.

[0005]

In view of the above circumstances, the present invention has an excellent scrubbing effect and a good feeling of use, and has high fluidity and sedimentation stability. An object of the present invention is to provide a slurry-like scrubbing detergent composition for skin which can be washed off immediately after use and has no environmental problems.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to achieve the above-mentioned object, and as a result, use sodium hydrogen carbonate having a specific particle size and particle size distribution as scrub particles, and It has been found that a slurry composition in which particles are dispersed together with a fatty acid or a fatty acid salt in a dispersion medium so as to have a viscosity in a specific range sufficiently satisfies the above object of the present invention.

That is, the sodium hydrogencarbonate particles have an appropriate hardness and, at the same time, exhibit excellent scrub characteristics by having the above-mentioned specific particle diameter and particle size distribution.
Sodium hydrogen carbonate has a cleaning effect due to weak alkalinity, and this cleaning effect is combined with the cleaning effect of a fatty acid or a fatty acid salt to give an extremely large cleaning effect. On the other hand, the presence of a fatty acid or a fatty acid salt enhances the fluidity of sodium hydrogencarbonate particles dispersed in a slurry state in water, has an appropriate viscosity range that gives a suitable feeling as a scrub detergent, and settling stability of the slurry. Contribute to the increase of.

Further, the sodium hydrogen carbonate used here has been widely used as baking soda in the fields of food and medicine since ancient times, and likewise fatty acids or fatty acid salts have been used as soaps. It is a substance that is not harmful to the skin and has no environmental pollution.

Thus, the present invention has the following constitution. (1) The average particle size is 20 to 90 μm, and the particle size is 1
A slurry containing sodium hydrogencarbonate particles having a particle size distribution in which particles having a particle size of 0 μm or less are 10 mass% or less and particles having a particle size of 300 μm or more are 20 mass% or less, a fatty acid or a fatty acid salt, and a dispersion medium. And a scrubbing detergent composition having a viscosity of 5,000 to 50,000 cP. (2) The sodium hydrogen carbonate has an average particle size of 20 to 9
0 μm, the particle size is 35-60 μm and the particle size is 25
The scrubbing detergent composition according to (1), which has two peaks of 0 to 350 μm. (3) The scrubbing detergent composition according to (1) or (2), which contains 0.5 to 4 parts by mass of a fatty acid or a fatty acid salt with respect to 100 parts by mass of the sodium hydrogencarbonate particles. (4) The scrubbing detergent composition according to any one of (1) to (3), wherein the fatty acid salt is an alkali metal salt of a fatty acid having 8 to 20 carbon atoms. (5) Including polyhydric alcohol as the dispersion medium (1) to
The scrubbing detergent composition according to any one of (4). (6) Furthermore, a cellulose-based thickener is included (1) to
The scrubbing detergent composition according to any one of (5). The present invention will be described in more detail below.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The average particle diameter and particle size distribution of sodium hydrogencarbonate particles in the scrubbing detergent composition of the present invention are not limited to all the scrubbing effects, fluidity as a detergent and sedimentation stability. It is important because it is related to the property. According to the present invention, the sodium hydrogencarbonate particles have an average particle size of 20 to 90 μm and a particle size of 10 μm.
The following particles are 10% by mass or less, and the particle size is 30:
It has been found that particles of 0 μm and above need to have a particle size distribution of 20% by weight or less.

In the present invention, the average particle diameter is a value defined by the mass average diameter. When the average particle diameter of sodium hydrogencarbonate particles is smaller than 20 μm, the scrubbing effect is essentially impaired. At the same time, when the average particle diameter is smaller than 20 μm, the viscosity increases and the fluidity becomes small. On the contrary, when the average particle size is larger than 90 μm, the stability is low and the particles settle in a short time. Among them, the case where the average particle diameter is 40 to 80 μm is particularly suitable.

The sodium hydrogencarbonate particles have an average particle size within the above range, and the particle size is 10 μm.
m or less particles are 10 mass% or less, and the particle diameter is 3
It is necessary to have a particle size distribution in which particles of 00 μm or more are 20 mass% or less. The particle size distribution here can be measured by the Microtrack HRA method. If the content of particles having a particle size of 10 μm or less exceeds 10% by mass, the scrubbing feeling of the obtained composition will be deteriorated. On the contrary, the particle size is 3
If the particles having a diameter of 00 μm or more exceed 20% by mass, the physical resistance as a scrubbing agent becomes large, which is unsuitable. Among them, there are 5 particles with a particle size of 10 μm or less.
It is preferable that the content is not more than mass%, and the particle size is 300μ.
It is particularly preferable that the particles having m or more be 15% by mass or less.

In addition, the particle size distribution of sodium hydrogen carbonate is, above all, 20 to 90 μm as the average particle size.
However, those having peaks of a plurality of particle sizes can be used. That is, it was found that an excellent scrubbing effect can be obtained by using sodium hydrogencarbonate particles having two peaks having a particle diameter of 35 to 60 μm and a particle diameter of 250 to 350 μm. In this case, large particles of sodium hydrogencarbonate can provide an appropriate scrubbing effect, and at the same time, fine particles can remove even pores of the skin and dirt in wrinkles.

The fatty acid or fatty acid salt contained in the scrubbing detergent composition of the present invention preferably has 8 to 20 carbon atoms, and particularly preferably 12 to 18 carbon atoms. As the type of metal salt, alkali metals such as sodium and potassium are preferable, and potassium is particularly preferable because the dispersion stability as a slurry composition is higher. Preferable specific examples of the fatty acid salt include sodium salt or potassium salt of lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and the like. Above all,
The sodium or potassium salt of oleic acid is preferred.

In the scrubbing detergent composition of the present invention, it is preferable that the sodium hydrogencarbonate particles having the above-mentioned specific particle size and particle size distribution and the fatty acid or fatty acid salt are contained in a specific ratio. That is, the ratio of the fatty acid or the fatty acid salt is preferably 0.5 to 4 parts by mass with respect to 100 parts by mass of the sodium hydrogencarbonate particles. When the content of the fatty acid or the fatty acid salt is smaller than the lower limit of the above range, the dispersion stability becomes small, which is not preferable. On the contrary, when it is larger than the upper limit of the above range, the viscosity of the composition increases and the fluidity decreases, which is not preferable.
Above all, it is preferable that the amount of the fatty acid or the fatty acid salt is 1 to 3 parts by mass with respect to 100 parts by mass of the sodium hydrogencarbonate particles.

Water and / or an organic solvent can be used as the dispersion medium of the scrubbing detergent composition of the present invention. As the organic solvent, alcohols such as methanol and ethanol, ethers, ketones, esters and the like can be used.
The content of the dispersion medium is 20 to 60% by mass of the detergent composition.
Is preferred. As the dispersion medium, an aqueous medium containing a polyhydric alcohol having 2 or more, preferably 3 or more hydroxyl groups in the molecule is preferable for the purpose of improving the fluidity of the composition and the moisture retention of the composition.

Preferred examples of the polyhydric alcohol contained above include glycerin, polyglycerin, propylene glycol, hexylene glycol, xylitol,
Mannitol, sorbitol, etc. are mentioned, and 1 type (s) or 2 or more types are contained. The content of the polyhydric alcohol in the detergent composition is preferably 20 to 40% by mass, and particularly 25 to 35% by mass.

The scrubbing detergent composition of the present invention preferably contains a cellulosic thickener for the purpose of increasing the viscosity. Preferred examples of the cellulose thickener include methylcellulose, ethyl cellulose, carboxyl cellulose, hydroxypropyl methyl cellulose, or
These salts etc. are mentioned and 1 type (s) or 2 or more types are contained. The content of the cellulosic thickener in the detergent composition is preferably 0.5 to 2% by mass, and particularly 0.8 to
It is preferably contained in an amount of 1.5% by mass.

The concentration of the sodium hydrogencarbonate particles in the detergent composition of the present invention is 40 to 80 as the solid content concentration.
Mass% is preferred. In the present invention, the viscosity of the slurry is preferably 5000 to 50000 cP. If the viscosity is lower than the above lower limit, the dispersion stability of the composition will be low, and conversely if it is higher than the above upper limit, the fluidity will be low, which is unsuitable. Among them, the viscosity of the slurry is preferably 7,000 to 3,000.
0 cP is preferred. According to the present invention, a slurry-like composition having a large fluidity and a large settling stability is retained even in such a slurry having a wide range of concentrations.

The method for producing the scrubbing slurry detergent composition of the present invention is not necessarily limited, but is preferably produced as follows. One way is
Sodium hydrogencarbonate particles, fatty acids or fatty acid salts, preferably having a plurality of different average particle sizes of 2-3, so as to have the above-mentioned specific particle size distribution when mixed,
And, if necessary, it is produced by mixing a polyhydric alcohol and a cellulosic thickener, and dispersing the mixture in an aqueous medium.

The sodium hydrogencarbonate particles used for the sodium hydrogencarbonate particles having the above-mentioned specific particle size distribution can be produced by wet-milling coarse particles of sodium hydrogencarbonate particles of preferably 40 to 500 μm. In the case of such wet pulverization, the presence of the above fatty acid or fatty acid salt is very preferable because sodium hydrogen carbonate having the above-mentioned specific particle size distribution can be obtained very easily. As the crusher used in the wet crushing, various crushers can be used, but balls having a diameter of 0.1 to 1.0 m, such as zirconia, glass, and steel balls, are preferably used. The use of a mill) is preferred. The crushing is preferably at room temperature to 40 ° C.
It is usually pulverized for 0.5 to 5 hours under the temperature condition of. The sodium hydrogencarbonate particles having the above-mentioned specific particle size distribution can also be produced by pulverizing coarse particles of sodium hydrogencarbonate by a dry method.

The slurry composition obtained by mixing the above-mentioned sodium hydrogencarbonate particles, fatty acid or fatty acid salt, and, if necessary, a cellulosic thickening agent and dispersing the mixture in a dispersion medium, has the above-mentioned large composition. It has fluidity as can be seen from the fact that it has a slurry viscosity. In addition, the slurry composition has great sedimentation stability. The sedimentation stability is extremely good, even when the slurry composition is allowed to stand at room temperature for 30 days, substantially no sedimentation property is exhibited.

The scrubbing detergent composition of the present invention having high sedimentation stability and fluidity as described above is stored, transported,
It is easy to handle, and because of its components such as sodium hydrogen carbonate, it can be quickly washed off after use, and since it has no environmental problems, it can be advantageously used as a detergent.

[0024]

EXAMPLES The present invention will be described in more detail below with reference to examples of the present invention, but it goes without saying that the present invention is not limited thereto. In addition, in the examples, the viscosity of the slurry-like cleaning composition is B manufactured by Tokyo Keiki Co., Ltd.
The viscosity was measured using a viscometer BM type.

Example 1 Crystalline particles 1 of sodium hydrogen carbonate having an average particle size of 45 μm
44 g, 36 g of sodium hydrogen carbonate crystal particles having an average particle size of 322 μm, 2.7 g of sodium oleate, 60 g of glycerin, 45 g of propylene glycol, and carboxymethyl cellulose (1% by mass aqueous solution) 0.3
g and 14.2 g of water were mixed in a beaker and stirred at room temperature for 1 to 2 hours to obtain a uniformly dispersed slurry composition.

The sodium hydrogencarbonate in the obtained slurry composition has an average particle size of 62.4 μm and contains 3.2% by mass of particles having a particle size of 10 μm or less.
11.5 mass% of particles having a particle diameter of 300 μm or more were contained. The composition also comprises 60% by weight of sodium hydrogen carbonate, 0.9% by weight of sodium oleate, and 2% of glycerin.
It contained 0% by weight, 15% by weight of propylene glycol, 4% by weight of water and 0.001% by weight of carboxymethylcellulose. In addition, the viscosity was 8300 cP, which showed great fluidity, and did not sediment even when left at room temperature for 30 days, and the sedimentation stability was good.

When this slurry composition was used as a cleaning agent for a body, a suitable particle size and elastic hardness were felt, and a suitable scrubbing property was exhibited and there was no irritation to the skin and good quality cleaning. Showed the effect. Also,
It could be easily washed off by rinsing after use.

Example 2 The average particle size is 59.3 μm, but there are two peaks at a particle size of 38 μm and a particle size of 330 μm, and 2.8% by mass of particles having a particle size of 10 μm or less, and Sodium hydrogencarbonate particles having a particle size distribution in which particles having a diameter of 300 μm or more were 5.1% by mass were prepared. 130 g of the sodium hydrogen carbonate and potassium oleate (21% by mass)
Aqueous solution) 10 g, glycerin 48 g, propylene glycol 10 g, hydroxypropyl methylcellulose (2
2% by mass of aqueous solution) and 8 g of water were mixed, and the mixture was stirred in a beaker at room temperature for 1 to 2 hours to obtain a uniformly dispersed slurry composition.

The obtained slurry composition was 65% by mass of sodium hydrogen carbonate, 1% by mass of potassium oleate, 24% by mass of glycerin, 5% by mass of propylene glycol,
It contained 5% by weight of water and 0.02% by weight of hydroxypropylmethylcellulose. Further, this slurry composition had a viscosity of 26000 cP, showed a large fluidity, did not sediment even after standing at room temperature for 30 days, and had good sedimentation stability. When this slurry composition was used as a cleaning agent for the body, it had a scrubbing feeling to some extent and a good feeling as compared with the cleaning agent of Example 1.

Comparative Example The same procedure as in Example 2 was repeated except that potassium oleate was not mixed, to obtain a slurry composition.
The obtained slurry composition has a viscosity of 100,000 cP.
Thus, when the mixture was left standing at room temperature for 10 hours, sodium hydrogencarbonate particles were precipitated.

Example 3 The average particle size was 46.5 μm, but there were two peaks at a particle size of 42 μm and a particle size of 264 μm, and 3.0% by mass of particles having a particle size of 10 μm or less, and Prepared were sodium hydrogencarbonate particles having a particle size distribution in which particles having a diameter of 300 μm or more were 2.3% by mass. 170 g of the sodium hydrogencarbonate particles, 2.5 g of potassium oleate,
Glycerin 47.5 g, propylene glycol 17.5
g, 2.5 g of methylcellulose (2% by mass aqueous solution), and 10 g of water are mixed, and the mixture is mixed in a beaker.
By stirring at room temperature for 1 to 2 hours, a uniformly dispersed slurry composition was obtained.

The obtained slurry composition was 68% by mass of sodium hydrogen carbonate, 1% by mass of potassium oleate, 19% by mass of glycerin, 7% by mass of propylene glycol,
It contained 4% by weight of water and 1% by weight of methylcellulose. The slurry composition has a viscosity of 19,500.
cP, showing great fluidity and at room temperature 30
It did not sediment even after standing for a day, and the sedimentation stability was good.
When this slurry composition was used as a cleaning agent for the body, it had a proper scrubbing feeling and exhibited good corrosion sensitivity as compared with the cleaning agent of Example 1.

[0033]

EFFECTS OF THE INVENTION According to the present invention, it has a suitable particle size and elastic hardness, exhibits a suitable scrubbing property, and exhibits a good cleaning effect without irritation to the skin,
Slurry scrubbing detergent composition for skin that has high fluidity and sedimentation stability, is advantageous for transportation, storage and handling, and can be quickly washed off after use and has no environmental problems. Will be provided.

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Claims (6)

[Claims] 1. Carbon dioxide having a particle size distribution having an average particle size of 20 to 90 μm, particles having a particle size of 10 μm or less is 10% by mass or less, and particles having a particle size of 300 μm or more is 20% by mass or less. A scrubbing detergent composition, which is a slurry containing sodium hydrogen particles, a fatty acid or a fatty acid salt, and a dispersion medium, and has a viscosity of 5,000 to 50,000 cP. 2. The scrubbing detergent composition according to claim 1, wherein the sodium hydrogen carbonate particles have an average particle size of 20 to 90 μm and have two peaks of a particle size of 35 to 60 μm and a particle size of 250 to 350 μm. object. 3. The scrubbing detergent composition according to claim 1, which contains 0.5 to 4 parts by mass of a fatty acid or a fatty acid salt with respect to 100 parts by mass of the sodium hydrogencarbonate particles. 4. The scrubbing detergent composition according to claim 1, wherein the fatty acid salt is an alkali metal salt of a fatty acid having 8 to 20 carbon atoms. 5. The scrubbing detergent composition according to claim 1, wherein the dispersion medium contains a polyhydric alcohol. 6. The scrubbing detergent composition according to claim 1, further comprising a cellulosic thickener.