JPS6042278B2 - Creamy cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel cream-like cleansing agent, particularly a cream-like cleansing agent for the body whose viscosity hardly changes due to temperature.

Generally, cream-like detergents contain 15 to 5% by volume of an anionic active agent to provide the detergent function, and various viscosity modifiers are used to make them cream-like.

For example, cream detergents based on fatty acid soaps and acylated glutamate salts are currently on the market, but it is difficult to keep them in a cream-like form for a long period of time while maintaining their cleaning function because they contain large amounts of anionic active agents. extremely difficult.

In other words, even though these products contain viscosity modifiers, their viscosity changes significantly depending on temperature.For example, even if they are creamy at room temperature, they become very hard and less creamy in the winter (at a temperature of around 5℃). is rather solid; on the contrary, in summer (
At a temperature of around 40° C., it becomes liquid and tends to flow easily.

On the other hand, alpha olefin sulfone sulfonate (
Regarding cream cleansing agents that are mainly composed of AOS salts (hereinafter abbreviated as AOS salts), AOS salts themselves may be expected to be relatively gentle on the skin when used among anionic surfactants with sulfonic acid groups. Moreover, although it is an active agent that can be obtained at a relatively low cost, the strength and properties of its polar group are significantly different from fatty acid soaps and acylated glutamates.
It has been considered difficult to make it creamy. The inventors of the present invention conducted intensive research to make a system containing a large amount of AOS salt into a cream-like product, and as a result, discovered a combination with a special additive. The cleaning composition was completed. That is, the present invention provides: (A) an anion activator mainly composed of AOS salt;
15-5 slag weight% (B) following general formula (
Oxyalkylene compound represented by 1)
3% to 2% salivary volume. However, R is hydrogen or a methyl group, and n is an integer of 1 to 30.

X and Y are saturated linear higher alcohol residues or higher fatty acid residues having 12 to 22 carbon atoms, and each of X and Y may be the same or different. (C) Even for general-purpose cosmetic raw materials, esters that are solid at room temperature, especially 0.5 to 15
% by weight, and is intended to provide a cream-like cleansing agent particularly suitable for body cleansing.

The anionic activator (4) component used in the present invention is AO
The S salt comprises at least 50% by weight of the anionic activator used, preferably from 80 to 10% by weight, and less than 5% by weight of the anionic activator other than the AOS salt, preferably from 0 to 20% by weight. In addition, the amount of anionic activator in the detergent is 15% by weight of the total amount, since the product must be cream-like.
The heel volume is preferably 25 to 4% and less than 5%. The preferred AOS salt in the anionic activator used is 12
with a carbon distribution of 1 to 20 and an average carbon number of 13 to 1
Water-soluble salts such as sodium salts, potassium salts, and magnesium salts of organic sulfonic acids obtained by using the linear alpha olefin of No. 8 as a raw material, sulfonating it using sulfur trioxide, etc., and then hydrolyzing it. be.

In addition, as an anionic activator other than AOS salt, carbon number 1
Water-soluble salts such as 2 to 13 aliphatic alcohol triethoxy sulfates, acylated glutamates, fatty acid soaps and the like can be mentioned. Next, the oxyalkylene compound which is the component (B) used in the present invention is limited to the compound specified by the general formula (1).

In this general formula (1), X and Y are unsaturated or branched. For example, oleic acid, oleyl alcohol,
Compounds such as isostearic acid and isostearyl alcohol do not produce the effects of the present invention. Regarding the carbon chain lengths of X and Y, 12 to 22, preferably general-purpose 16 and 18 are good, and those less than 10 such as pyropuric acid, pyrofuric acid, decanol, octanol, etc. are too hydrophilic and are not suitable for use. The effect of the invention does not occur. X and Y may be the same or different. Sarabanko,
1 (Engineering 11-' Vll2V Typical examples include glycol, diethylene glycol, triethylene glycol, etc.The amount of oxyalkylene compound used should be 3 to 2% by weight of the total amount, and if it exceeds 20% by weight, anionic activators are often used. On the other hand, if the amount of anionic activator is low, it becomes lard-like or paste-like, which is unfavorable in terms of appearance and also deteriorates foaming, which is another important property.

Further, if the amount is less than 3% by weight, the effect of the present invention will not be exhibited. The preferred amount is in the range of 4 to 1% heel weight. Next, AOS
Regarding the quantitative relationship with the salt, it is preferable that the amount of the oxyalkylene compound is the same as or less than that of the AOS salt.

If it is blended in a larger amount than the AOS salt, the crystalline state of the system may change and a product that is stable at various temperatures may not be possible. Among general-purpose cosmetic raw materials, the composition of the present invention is particularly suitable for solid esters (
C) the component is essential.

The amount of component (C) used depends on the amount of CA) and (B) used, but 0.5 to 15% by weight is required, and it can be changed as necessary within this range. can. The hardness of the cream detergent can be set within a wide range depending on consumer preference, but a particularly preferred hardness is 40°C at 25°C.
It is in the range of 00 to 12000 ciyne/CTi. For example, if the total amount of (4) and (B) is as large as 60.7% by weight, 1 to 2% by weight of component (C) is sufficient.
When the total amount of CA) and (B) is as small as 25.35% by weight, the appropriate amount of component (C) is about 10% by weight. CA
) and (B) in combination with component (C) within the above range, the change in viscosity due to temperature is reduced. Typical examples of component (C) include cacao butter, palm oil, hydrogenated castor oil, hydrogenated oil, fats and oils such as wood wax, waxes such as beeswax, carnauba wax, whale oil, and lanolin, or cetyl palmitate. Examples include esters such as methyl stearate, and further include general-purpose emulsifiers such as glyceryl fatty acid esters and zorbitan fatty acid esters.

However, esters that are not solids or solids that are not esters are unsuitable. Generally, the compound represented by the general formula (1) where n=1 is widely used as a burr agent, and the compound where n=100 to 200 is used as a thickener.

However, when it comes to the range of use as a burr agent,
Approximately 1% gives the optimum burl-like appearance; for example, if the amount added to a general-purpose crowbar jumper is increased to 5%, aggregates will form, which is undesirable.
brings out its characteristics. In contrast, in the present invention, the desired effect of the present invention can only be achieved by blending the components (A), (B), and (C) in a specific composition ratio. Therefore, as a body cleanser, it is of course necessary to select ingredients that are mild to the skin, but it is also necessary to select ingredients that are almost the same as the skin's pH.
That is, it is preferable to maintain the pH of the cleaning agent at around 5.

Regarding this point, soaps conventionally used as cream-based cleansers have ingredients that are mild to the skin, but
You cannot wash the soap before and after. The pH of the composition of the present invention can be easily adjusted to around 5 if desired. (
(See Examples 32 to 34) When the composition of the present invention is used, it has the advantages of producing rich foaming properties, creamy fine foam, and providing a pleasant feeling of use, so it is gentle on the body. It can exhibit desirable performance as a cleaning agent. In addition to the above-mentioned essential ingredients, general-purpose cosmetic raw materials such as fragrances, moisturizers, and amphoteric active agents as cleaning aids can be optionally used in normal amounts. Of course, it is.

Hereinafter, the present invention will be explained in more detail by showing examples. (
Example 1 and Comparative Examples 1 to 6) An aqueous solution containing the prisoner components shown in Table 1 and components (B) and (C) were respectively melted and mixed by heating to 80'Cl85°C.
Add ingredients (B) and (C) to the container and heat at 80°C1120~1
The mixture was stirred with an anchor-type impeller for 50 r'PmlO minutes.

Thereafter, the mixture was cooled to 35° C. and stirred at the same rotation speed, and after being left to stand, it was poured into a glass container to prepare a sample. Table 1 clearly shows the effects of the present invention, and shows that the present invention requires the components (A, (B) and (C)) to be contained in appropriate ratios as in Example 1.

That is, as shown in Comparative Examples 1 and 2, even if either component (B) or (C) is missing, the desired creamy detergent with little change in viscosity cannot be obtained.

At this time, if component (4) alone does not contain components (B) and (C), it will be a liquid, and since components (B) and (C) are difficult to dissolve in water, if (4) is not included, it will naturally become a dispersion. . Comparative example-3
, 4 investigated the differences in anionic activators, and it can be seen that compositions using AOS salts show less change in viscosity due to temperature than acylated glutamate and stearic acid soaps.

Moreover, in Comparative Example 15, instead of component (B), general formula (1) was used.
This is a case where POE5 stearate ester in which either X or Y is hydrogen is used, and in Comparative Example-6, microcrystalline wax, which is solid but does not fall under the category of ester, was used instead of component (C). In either case, the viscosity changes significantly and the desired composition cannot be obtained. Here, we will add an explanation of cream hardness, which is a criterion for viscosity change.

Hardness (Dyrle/Crl) - The hardness was measured at each temperature of 40℃ for 5.2 seconds using a complet type viscometer.
Measure the Share-Stress curve of the ream
Ta.

Using this curve, the shear reaction (Dyr)e/Clt) at a shear rate of 5(g)Ec:1 was determined as hardness. (References, Kazunari Suzuki: Industrial Chemistry Magazine, V
Ol. 7 ton NO. 4 (1970)) Example 2 (Executions 2 to 7 and Comparative Example 7) Samples were prepared in the same manner as Example 1 using the formulations based on Table 2 and marked *1 (other common ingredients) and compared.

Table 2 shows the results of investigating the difference in effects depending on the concentration of AOS salt. When AOS salt exceeds 50% by weight, it solidifies at 5°C.
'C and the viscosity becomes lower. If the saliva amount is 1%, the viscosity changes greatly depending on temperature and is outside the scope of the present invention.

Further, as shown in Examples 5, 6, and 7, even if acylated glutamate, potassium stearate, and lauryl triethoxy sulfate are added within the scope of the claims, the effect of the present invention will be improved even though the hardness will only increase somewhat. It does not prevent

Example 3 (Examples 3 to 19 and Comparative Examples 9 to 11) Samples were prepared and compared in the same manner as Example 1 using formulations based on Table 3 and other common ingredients shown below Table 3.

Table 3 examines the types of polyalkylene compounds that are component (B), and as shown in Comparative Examples 9 and 10, isofatty acids and unsaturated fatty acid esters do not have the effect of the present invention. Furthermore, if the number of moles of ethylene oxide added is 30 moles or more, as shown in Comparative Example 11, the viscosity changes significantly and falls outside the claimed range.

Example-4 (Examples 20-2 and Comparative Examples 12-13) Example-
Samples were prepared and compared in the same manner as in Example 1.

Table 4 uses polyethylene glycol distearate as a representative example of component (B) and shows the range of its blending amount. As shown in Comparative Example-12, EG-DiS
When the amount of EG-DlS is as low as 1%, the viscosity changes greatly, and when the amount of EG-DlS is as large as 25% as in Comparative Example-13, it becomes solid at 5°C. Example-5 (Examples 25 to 31 and Comparative Example 1
4-15) Samples were prepared in the same manner as in Example-1 using formulations based on other common ingredients shown below Table-5 and Table-3, and compared.

Table 5 shows a comparison of component (C), and shows that when cetanol stearic acid is added instead of solid ester,
As shown in Comparative Examples 14 and 15 (does not exhibit the effect of the present invention. This is because compounds having polar groups such as cetanol and stearic acid are not included in component (C) and are outside the scope of the claims of this patent. However, as shown in Examples 28 and 29, these do not interfere with the effects of the present invention even when used in combination with solid esters, and can be added as optional ingredients.Example 32 Creamy facial cleansing soap implementation Example 33 Cream body cleanser Example 34 The hardness and pH of cream body cleanser Examples 32, 33, and 34 are shown below.

Claims (1)

[Scope of Claims] 1. A cream-like detergent composition containing the following (A), (B) and (C) as essential components. (A) 15 to 50% by weight of an anionic activator mainly composed of alpha olefin sulfonate (B) 3 to 20% by weight of an oxyalkylene compound represented by the following general formula (I) ▲Mathematical formulas, chemical formulas, tables, etc. are included▼ (I) However, the above R is hydrogen or a methyl group, and n is an integer of 1 to 30. X and Y are saturated linear higher alcohol residues or higher fatty acid residues having 12 to 22 carbon atoms, and each of X and Y may be the same or different. (C) 0.5-15% by weight of esters that are solid at room temperature among general-purpose cosmetic raw materials