JPH0320213A - Liquid detergent composition for body cleaning - Google Patents

Abstract

PURPOSE:To provide the subject composition with low irritation to skin, good in detergency, foamability and feeling when used, made up of specific four components, i.e., a triethanolamine salt of mixed fatty acid, a betaine-based amphoteric surfactant, an anionic surfactant and an oily component. CONSTITUTION:The objective composition made up of (A) 10-40wt.% of a triethanolamine salt of a mixed fatty acid which contains lauric acid, myristic acid, palmitic acid and oleic acid and <=8 (pref. <=6) wt.% of other fatty acids, (B) 1-10wt.% of a 2-alkyl or 2-alkenyl-N-carboxymethyl-N- hydroxyethylimidazolinium betaine of the formula (R is 1-17C alkyl or alkenyl; X is H or CH2COONa), (C) 1-10wt.% of an alkyl or alkenyl methyltaurine having 7-17C alkyl or alkenyl group and (D) 0.01-5wt.% of liquid paraffin.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to body applications that come into direct contact with human skin, face washing applications,
Concerning liquid cleaning compositions for the body, such as for hand washing, shaving, and hair. (Prior Art) Various fatty acid salts and surfactants have been used as liquid body cleansers. Examples include fatty acid soaps, alkyl sulfate ester salts, polyoxyethylene alkyl sulfate ester salts, anioic or amphoteric surfactants such as acylated methyl taurate salts, and other alkyl phosphate ester salts that are considered to be biosimilar substances. (Japanese Unexamined Patent Publication No. 53-26806) is also known to be used. In addition, by combining fatty acid soap and amphoteric surfactant,
To improve the foaming power and cleaning power, etc., was disclosed in JP-A-51-3
No. 1706, No. 51-31707, No. 51-3170
No. 8, No. 55-102699, and No. 57-92096. Furthermore, JP-A-62
Publication No. 72796 discloses that by adding an anoic acid surfactant to a mixture of a sulfate anionic surfactant and a betaine amphoteric surfactant, the slimy feeling after washing is reduced, and the stability is improved. It is also disclosed that a good cleaning agent can be obtained. In terms of skin physiology, such liquid body cleansers are primarily non-irritating to the skin, have a particularly low protein denaturing effect, and absorb natural moisturizing factors from the stratum corneum.
It is desirable that there be no elution of amino acids, which are the main constituents of NMF. Secondly, from a functional standpoint, it provides appropriate foaming properties, good foam quality, excellent foam stability and cleaning power during use, and is easy to rinse, does not have a slimy feel, and has a refreshing finish. It is desirable to give. (Problem to be solved by the invention) However, fatty acid soaps that have been used for a long time have the advantage of having high cleaning power and leaving a refreshing finish without feeling slimy even after washing. There is a problem in that they have a strong desquamation or degreasing ability and cause rough skin.Furthermore, anionic surfactants such as alkyl sulfate salts are irritating to the skin, so even though they have excellent surfactant ability, However, it is not necessarily desirable for a body cleansing agent that is desired to be mild to the skin.Furthermore, amphoteric surfactants are neutral, close to the pH of sebum, and mild against protein denaturation. Since these fatty acids tend to be more strongly adsorbed to the skin than other surfactants, they are difficult to remove during rinsing and leave a slimy feeling, making it difficult to get a refreshing cleansing effect. Although some of the above-mentioned known cleaning agents composed of appropriate combinations of soap and anionic or amphoteric surfactants have alleviated the above-mentioned problems to some extent, they still do not meet all the above-mentioned requirements. Satisfactory and excellent performance has not yet been obtained, and it is desired that a liquid cleaning agent with improved performance be developed.In view of these circumstances, the present invention satisfies all of the above-mentioned requirements. It is particularly hypoallergenic, hardly causing any degreasing on the skin itself, and has excellent cleaning performance such as foaming properties and foam quality.
Furthermore, it is an object of the present invention to provide a liquid body cleansing agent and Iltc product that has good rinsing properties after washing, does not have a slimy feeling, does not leave a feeling of tightness or dryness after drying, and has a refreshing feel after washing. [Means for Solving the Problems] As a result of intensive studies to achieve the above object, the present inventors discovered that a specific composition of fatty acid triethanolamine salt, a specific betaine-based amphoteric surfactant, and a specific By using a combination of four ingredients: an anionic surfactant and a specific oil-based ingredient, it is hypoallergenic and does not degrease the skin itself, and has excellent foaming properties, foam quality, and foam stability. A liquid detergent that has excellent cleaning power, has good rinsing properties after washing, does not have a slimy feeling, does not leave any feeling of tightness or dryness after drying, and has a very refreshing finish after washing. Knowing this, I was able to complete the present invention. That is, the present invention comprises the following four components (a) to (d);
a) 10 to 40% by weight triethanolamine salt of a mixed fatty acid containing four types of fatty acids: lauric acid, myristic acid, palmitic acid, and oleic acid, and the content of other fatty acids is 8% by weight or less. Formula (I): CHz GHz OH / 1 C H * C O O Na (wherein, R is an alkyl group or alkenyl group having 7 to 17 carbon atoms, and X is a hydrogen atom or 1 C H t C O O Na ) 2-alkyl or 2-alkenyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine 1 to 10% by weight (C) Alkyl or alkenylmethyl having an alkyl group or alkenyl group having 7 to 17 carbon atoms Taurine 1
~10% by weight (d) This relates to a liquid body cleansing agent & IItc product characterized by containing 0.01 to 5% by weight of liquid isoparaffin as an effective ingredient. Furthermore, in the present invention,
In addition to the western components (a) to (d) above, the following precept (e
(e) A liquid body cleansing composition containing 0.1 to 5% by weight of an alkyl or alkenyldimethylanoxide having an alkyl group or an alkenyl group having 8 to 18 carbon atoms can also be provided. By the way, prior to completing the present invention, the present applicant used a triethanolamine salt of a fatty acid having 8 to 22 carbon atoms, a betaine-based amphoteric surfactant, and further alkyl or alkenyl-dimethylaminoacetic acid betaine, etc. It was discovered that the liquid cleaning agent produced by the inventors has properties such as excellent foaming power and rinsing properties, as well as low sliminess and low degreasing properties, and has already filed an application for this as a prior invention of the present invention.
JP-A-62-205198). The present invention further improves this prior invention, and provides that component (a) fatty acid triethanolamine salt contains specific fatty acids &Ilt;
c, and the betaine amphoteric surfactant of precept (b) is a specific one represented by the general formula (1) above, while the third and fourth components are combined with these precepts. By using alkyl or alkenyl methyl taurine as ingredient (C) and liquid isoparaffin as component (d), and by further adding dimethylamine oxide as component (e) to these four components, the above performance can be achieved. The present invention has been found to be even more improved, and in particular, the sliminess is further reduced, thereby highly satisfying all of the above-mentioned properties desired in a liquid body cleansing agent, and the present invention has finally been perfected. It is something that

[Structure and operation of invention]

The fatty acid triethanolamine salt of precept (a) used in the present invention contains four types of fatty acids: lauric acid, ξristic acid, palmitic acid, and oleic acid, and the total content of fatty acids other than these is 8% by weight or less. , preferably 6% by weight or less of triethanolamine salts of mixed fatty acids. Here, lauric acid and ξristic acid are involved in foaming speed and amount of foaming, palmitic acid is effective in improving foam quality and imparts uniform emulsifying properties, and ξrhic acid is Contributes to improving foam quality and low-temperature fluidity. From this, when using triethanolamine salt of mixed fatty acids consisting of such specific fatty acids, foaming properties,
Very favorable results can be obtained in various performances such as foam quality and low-temperature fluidity. The proportion of the above four types of fatty acids in the total fatty acids is as follows:
From the viewpoint of better exerting the above-mentioned functions, generally 15 to 50% by weight of lauric acid and 10 to 1% of ξ listic acid are used.
5% by weight, palmitic acid 15-25% by weight, and oleic acid 22-37% by weight. If there is too little lauric acid and myristic acid, foaming properties will decrease,
If there is too much, the foam particles will become larger and coarser, making them more likely to solidify at low temperatures. If there is too little palmitic acid, the quality of the foam, especially the fineness, will be lost, and if it is too much, the foaming properties will be reduced and it will become more likely to solidify. Too little oleic acid does not improve low-temperature fluidity, and too much oleic acid lowers the viscosity too much. To set the fatty acid composition as described above, it is sufficient to use highly purified fatty acids obtained by hydrolysis of natural vegetable oils, animal oils, marine product oils, etc. and mix them in a predetermined ratio. Commercially available high-purity oleic acid has an oleic acid content of about 80% by weight or more, and usually contains 8% by weight or less of linoleic acid, 2% or less of linolenic acid, and 5% or less of unsaturated acids other than these. Contains up to 5% by weight of saturated acids other than lauric acid, myristic acid and palmitic acid. However, this commercially available oleic acid is nearly odorless, has a hue of less than 100 in APHA, and has excellent thermal stability, so there is no problem in preparing mixed fatty acids using it as described above. This will not cause any problems. The betaine-based amphoteric surfactant (b) used in the present invention is a 2-alkyl or 2- Alkenyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, which is generally derived from a fatty acid having 8 to 18 carbon atoms, hydroxyethyl ξ dazoline, and sodium monochloroacetate. The above fatty acids include, for example, lauric acid, myristic acid, pulpotic acid, stearic acid,
Single or mixed fatty acids such as coconut oil fatty acid and oleic acid are used, but among these, lauric acid and ξristic acid are particularly preferred because they increase the foaming properties of the detergent composition. It will be done. This type of betaine-based amphoteric surfactant has the following general formula (■); C Hz C Hz O H R'CONHCHt CH! N
(II) Those represented by C Hz C O O Na (wherein R' is an alkyl group or alkenyl group having 7 to 17 carbon atoms) are also known. However, according to the research of the present inventors, the imidazolinium betaine represented by the above general formula (1) specified in the present invention is better than that represented by this general formula (II) after washing. It was found to be more preferable with less slimy feeling. However, this type of ibatazolinium betaine derived by the above method includes those represented by the general formula (1),
The compounds represented by the general formula (If) are often mixed together, and in this case, it is not particularly necessary to completely separate and remove the latter compound represented by the general formula (II). That is, as long as the amount of the compound represented by the general formula (II) is 30% by weight or less in the total amount of both, there is no problem in applying this to the present invention. The anionic surfactant as component (C) used in the present invention is an alkyl or alkenyl methyl taurine having an alkyl group or an alkenyl group having 7 to 17 carbon atoms, and is generally combined with a fatty acid having 8 to 18 carbon atoms. It can be obtained by reacting methyltaurine with an alkali salt. The above-mentioned fatty acids are preferably coconut oil fatty acids or lauric acid, and when these fatty acids are used, favorable results can be obtained in terms of foaming properties of the cleaning composition. In the present invention, first of all, the above three precepts (a) to
(C) is used in combination, and the combination of these ingredients reduces the degreasing power and slimy feeling, and also ensures the foaming power, foam quality, cleaning power, etc. necessary for a body cleansing agent. It also provides various effects such as improved rinsing properties. On the other hand,
For example, a combination of only Kaibun (11) and Ibun (C) will result in excessive degreasing power even though the foam quality and foaming properties are good, and a combination of Kaibun (a) and ingredient (bl) will result in excessive degreasing power. Even if it is suppressed, sufficient foaming power cannot be obtained.In the present invention, in order to obtain the above-mentioned effects, the amount of the three components to be blended is 10 to 40% by weight for precept (a); Preferably 15 to 35% by weight, 1 to 1% in ingredients
0% by weight, preferably 2-8% by weight, 1-8% by weight for Ibun (C)
The amount is preferably 10% by weight, preferably 2 to 8% by weight. When component (a) is less than 10% by weight, a slimy feeling remains, and foaming and rinsing properties are poor, while when it exceeds 40% by weight, the degreasing power becomes strong. Moreover, if component 0 >> is less than 1% by weight, the degreasing power becomes strong, and if it exceeds 10% by weight, the viscosity increases and becomes difficult to handle. In addition, 1% by weight of Ibun (C)
If it is less than 10% by weight, the foaming properties will be lowered, and if it exceeds 10% by weight, the degreasing power will be too strong, causing irritation problems.

Next, in the present invention, the above-mentioned three components (a) to (e
), another feature is the combined use of component (d), liquid isoparaffin. That is, this liquid isoparaffin is a tasteless, odorless, colorless and transparent branched saturated hydrocarbon oil from which low and high molecular weight components have been removed, and when such specific oily substances are blended,
This acts as a fat-liquid ingredient and a moisturizing ingredient, giving you a refreshing and moist feeling after washing, giving you an even more pleasant finish.

The blending amount of component (d) is 0.01 to 5
% by weight, preferably 0.05-3% by weight.

0. If it is less than 5% by weight, the above-mentioned effects will not be fully exhibited, and if it exceeds 5% by weight, it will be an oily substance,
This may cause problems with the stability of the liquid, such as separation. Furthermore, in the present invention, in addition to the above four components (a) to (d), (e) an alkyl or alkenyldimethylamine oxide having an alkyl group or alkenyl group having 8 to 18 carbon atoms may be further blended. can.

This precept (e) increases the foaming power and gives firmness to the foam.
This allows the effects of the present invention described above to be further enhanced.

Such a component (dl) fruit oxide can be obtained by the reaction of a fatty acid having 8 to 18 carbon atoms, representative examples of which are coconut oil fatty acid and lauric acid, and dimethylamine oxide.This component (d) The blending amount is 0.
1 to 5% by weight, preferably 0.1 to 3% by weight, and 0
．． If it is less than 1% by weight, the above-mentioned effect will not be fully exhibited, and 5% by weight.
Exceeding this percentage by weight may cause irritation to the skin. The liquid body cleansing agent &IIIfc product of the present invention is made by adding the above four precepts (a) to (d) or the above component (e) to it, %
The pH of the aqueous solution is 7.3 to 9.3, preferably 7.3.
It is best to adjust it within the range of 5 to 8.5. Above pH
When the value is lower than 7.3, the slimy feeling becomes strong and the foaming property decreases, when it is around 5.5, liquid separation occurs, and when it exceeds 9.3, the alkalinity becomes strong and the degreasing power increases. .

Sometimes such pH adjustment can be achieved simply by mixing the components, but in other cases, or even in that case, using acids such as sulfuric acid, hydrochloric acid, phosphoric acid, sodium hydroxide, potassium hydroxide, etc. It can be adjusted to an appropriate value within the above range using a base such as , triethanolamine or the like.

The liquid body cleansing composition of the present invention may contain conventionally known cleansing active ingredients, oily ingredients, emulsifying solubilizers, thickeners, oxidants, etc., as necessary, within the range that does not impede the effects of the present invention. inhibitor,
Various additives such as metal sequestrants and crystal regulators may be added. As cleaning active ingredients, known alkyl sulfate ester salts, polyoxyethylene alkyl sulfate ester salts, acylated sarcosine salts, sulfosuccinic acid polyoxyethylene fatty acid ethanolate ester salts, alkyl amino acid salts, acylated amino acid salts, fatty acid monoglyceride sulfates are used. Ester salt, benzalkonium chloride, alkyltrimethylammonium chloride, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene propylene fatty acid ester, fatty acid alkanolamide, alkyl dihydroxyethylamine oxide, polyoxyethylene alkylamine, polyoxy Examples include ethylene sorbitan fatty acid ester.

In addition, oil-based ingredients include higher fatty acid esters, higher alcohols, liquid paraffin, etc., and emulsifying solubilizers include various nonions such as polyethylene glycol monostearate, polyethylene glycol monolaurate, polyethylene nonylphenol ether,
Examples include polyethylene lauryl ether, polyethylene cetyl ether, polyethylene stearyl ether, polyethylene oleyl ether, polyoxyethylene sorbitan monolaurate, and polyoxyethylene sorbitan monooleate. Furthermore, water-soluble polymer compounds such as polyvinyl alcohol and sodium alginate are used as thickeners, dibutylhydroxytoluene and butylated hydroxyanisole are used as antioxidants, and ethylenediaminetetraacetic acid or its alkali are used as sequestering agents. Examples of crystal regulators include metal salts, hydroxyethane diphosphonic acid or alkali metal salts thereof, and mono- or diesters of ethylene glycol stearic acid. The preparation of the liquid body cleansing composition of the present invention includes, for example, component (b). Component (a) is blended into (C) or an aqueous solution of component (e) added thereto under heating at 40°C or higher, and component (d) and the various additives described above are sequentially blended into this. This can be done by uniformly mixing and dissolving these and then cooling. [Effects of the Invention] As described above, the liquid body cleansing composition of the present invention has good foaming properties, fine foam quality and firmness, excellent foam stability and cleaning power, and It has various benefits such as good rinsing properties after washing, no slimy feeling, no feeling of tightness or dryness after drying, and a refreshing finish that is not irritating and hardly causes any degreasing on the skin itself. For this reason, it is most suitable as a body shampoo, and is also suitable as a cleaning agent for face washing, hair washing, hand washing, beard shaving, etc. [Examples] Next, examples of the present invention will be described and specifically explained.
Hereinafter, parts and % mean parts by weight and % by weight, respectively.

Examples 1 to 4 Ingredients (a) Commercially available lauric acid [NAA-122 manufactured by NOF Specialty;
Purity 99%], commercially available ξ listic acid [NOF special NA
A-142: purity 99%], commercially available palmitic acid [NAA-160 manufactured by NOF ■; purity 98%], and commercially available oleic acid [Extra Olein-80R manufactured by NOF ■: purity 86%] at the specified weight. Mix the following fatty acids &l in the ratio
We prepared two types of mixed fatty acids, AI and A2, which have high potency. 9
Mixed fatty acid Al; Lauric acid ξ Listic acid: Palmitic acid: Oleic acid and other fatty acids 9 Mixed fatty acids A2; Lauric acid: 49% by weight ξ Listic acid = 11% by weight Palmitic acid: 22% by weight Oleic acid: 16% by weight Other Fatty acid: 2% by weight Triethanolamine salt obtained by the reaction of the above mixed fatty acid A1 with commercially available triethanolamine (TEA manufactured by Nippon Shokubai Chemical Co., Ltd.; purity 99%) [hereinafter referred to as precipitate (a)-1] ], or a triethanolamine salt obtained by the reaction of the above mixed fatty acid A2 and the above commercially available triethanolamine [hereinafter referred to as Ibun (a)-2]. 32% by weight 1% by weight 21% by weight 32% by weight 4% by weight Subdivision (b)〉 Coconut oil fatty acid [NAA-3 1 2 and NAA-8 2 manufactured by NOF ■ in a weight ratio of 75:25 Idazolinium betaine [Mixture] was used as the fatty acid raw material [Nitsan Anon GLM-5, manufactured by Nippon Oil & Fats. 25% aqueous solution] was used. This imidazolinium betaine has the general formula (
The substance represented by 1) accounts for 70% by weight or more of the total amount of the substance represented by the general formula (II).

<Component (C)> Sodium methyltaurine [Nissan Diapon K-SF manufactured by NOF ■] using coconut oil fatty acid [NAA-4 1 5 manufactured by NOF ■] as the fatty acid raw material. 30% aqueous solution]
was used.

<Component <<d>>> Pearlream EX (100% liquid isoparaffin product) manufactured by NOF was used.

<Kibun (e)> Lauryl dimethylamine oxide [Nissan Unisafe A-LMl 5% aqueous solution manufactured by NOF Specialty] was used. Other Ingredients> Emulsifying solubilizer consisting of polyethylene glycol monostearate [Nodion S made by NOF Specialty Co., Ltd. = 40:100%
powder] and a crystal regulator consisting of ethylene glycol distearate [Unistar E-286 manufactured by NOF ■; 1
00% powder] at a weight ratio of 1:1. Using each of the above precepts, the weight percentage of each precept (effective portion) in the entire &IItc object is the value shown in Table 1 below (
First, add component (a)-1 or (C) or an aqueous solution of component (e) to it while heating it to a temperature of 50°C so that the remainder is water). a) −2
Then, component (d) and the above-mentioned other precepts are further blended, and after uniformly mixing and dissolving these, the four types of liquid body cleansing compositions of the present invention are prepared. I prepared something. Comparative Examples 1 to 4 As shown in Table 1, Ibun (b). Except for either one of (C) or the combination (d), other combinations and preparation procedures are as described in Examples 1 to 4 above.
In the same manner as above, four types of liquid body cleansers were prepared for comparison. The following evaluations were performed for each of the liquid cleaning compositions of Examples 1 to 4 and Comparative Examples 1 to 4. The results are shown in Table 1 below. Viscosity> 200 g of each bottom assembly was soaked in a constant temperature bath at 20° C. for 2 hours or more, and then measured using a B-type rotational viscometer.

Pour point〉 Place each assembled bottom in a test tube into an outer tube in a cooling bath, cool it in the prescribed manner, and every time the temperature inside the test tube drops by 2.5°C, take out the test tube and observe it. The temperature at which the composition stopped moving at all within the specified time was read, and a temperature 2.5°C higher than this temperature was defined as the pour point. <P}l of 5% aqueous solution> The log of each sample was taken, diluted with distilled water so that the total effective content was 5%, and measured using a p11 meter. Foaming power> The total effective content of each &I1 precept is 1. It was diluted with water to a concentration of 0%, and the foam height (n) at 40°C was measured using the Ross-Miles method. The measured value is the value immediately after preparation, and a high value indicates excellent foaming properties.

<Cleaning power> Each composition was diluted with water so that the total effective content was 2.0%, and using this aqueous solution, artificial dirt was washed at 40°C for 5 minutes according to the Rienatsu test method. The cleaning rate (%) was determined from the weight before and after cleaning, and the cleaning power was evaluated. The artificial stain used was a contaminated cloth prepared by mixing and dispersing triolein, cholesterol, squalene, and pallic acid with carbon plaque, immersing it in this solution, and air-drying it. Rinseability and slimy feeling during rinsing: A panel of 20 to 40 year olds was given 5 ml of each set of kaimono on a bath sponge, and the fingers and forearms were washed 3 times each with warm water at about 40°C. After washing, the samples were evaluated as follows. Rinseability is evaluated as good when the foam disappears quickly when flushed with water three times after washing, and as for sliminess, a product that is less slimy is considered good, and based on the evaluation criteria of 04, both are wet. The average value of 10 panelists is shown. Rinseability: 4 points: Good 3 points. Fairly good 2 points Fairly bad 1 point Bad S slimy feeling; 4 points / Absent 3 points: Almost absent 2 points Fairly 1 point: Obviously present <Refreshing feeling, degreasing properties and dry feeling after washing> The above After evaluating the rinsability, after washing,
Each was evaluated using the following four-stage evaluation criteria, and panelists
It is shown as the average value of 0 people. 2 points: S slightly slimy and refreshing feeling; S degreasing; 4 points: Good 3 points: Fairly good 2 points: Slightly bad 1 point: Bad 3 points: Almost no dryness 2 points: Slightly dry 1 point : As is clear from Table 1 above, the cleaning agent Mi of the present invention
All Kaimono products have excellent foaming properties and cleaning properties, and are easy to rinse after washing without leaving a slimy feeling. Moreover, they do not have excessive degreasing power or the resulting dry feeling, leaving a refreshing feeling. This makes it extremely suitable for body, face, hand, shaving, hair, etc.

Claims (2)

[Claims] (1) The following four components (a) to (d); (a) A mixture containing four types of fatty acids: lauric acid, myristic acid, palmitic acid, and oleic acid, and the content of other fatty acids is 8% by weight or less Triethanolamine salt of fatty acid 10-40% by weight (b) The following general formula (I); ▲There are mathematical formulas, chemical formulas, tables, etc.▼ ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(I) ▲Mathematical formula , chemical formulas, tables, etc. ▼ (In the formula, R is an alkyl group or alkenyl group having 7 to 17 carbon atoms, and X is a hydrogen atom or -CH_2COONa) 2-alkyl or 2-alkenyl-N- represented by 1 to 10% by weight of carboxymethyl-N-hydroxyethylimidazolinium betaine (c) 1 to 1 alkyl or alkenylmethyl taurine having an alkyl or alkenyl group having 7 to 17 carbon atoms
0% by weight (d) A liquid body cleansing composition characterized by containing 0.01 to 5% by weight of liquid isoparaffin as an active ingredient. (2) In addition to the four components (a) to (d), the following component (e
); (e) 0.1 to 5% by weight of an alkyl or alkenyldimethylamine oxide having an alkyl group or alkenyl group having 8 to 18 carbon atoms. thing.