JPH0656648A - Cleansing agent composition - Google Patents

Abstract

PURPOSE:To provide a cleaning agent composition excellent in safety as well as having moderate cleansing capability on the skin and hair. CONSTITUTION:This cleansing agent composition is formulated with 5-90wt.% of an alkali metal salt or organic salt of fatty acids in which oleic acid accounts for >=80wt.% of the whole fatty acid and 0.1-10wt.% of a hydrophilic nonionic surfactant of >=13 Griffin HLB number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition, and more specifically, it provides a detergent composition for hair, face and body which has an appropriate detergency for skin and hair and is excellent in safety. It is something to do.

[0002]

2. Description of the Related Art Conventionally, as detergents for skin and hair, soaps which are higher fatty acid salts and various synthetic activators such as alkyl sulfates, acyl amino acid salts, alkyl ether sulfates, alkyl ether acetates, alkyls. Amido ether sulfate salts, alkylmethyl taurine salts, alkyl glutamate salts, alkyl sarcosine salts and the like have been used.

Regarding these soaps and synthetic activators which have been used conventionally, for example, in soaps, higher fatty acids are a part of sebum constituents, and even if they remain on the skin after washing, they are unlikely to become foreign substances. Further, the synthetic activator has advantages such as good detergency, foaming and rinsing and a pH region around neutrality, which can alleviate primary irritation.

[0004]

However, these conventional detergents using synthetic activators are substances that do not originally exist in the human body, and the residual activator after washing causes skin roughness over time. It has been pointed out that, especially in the case of a sulfate-based synthetic activator, the solubilizing power is strong and there is a problem that skin roughness occurs due to excessive washing of sebum.

On the other hand, in the case of soap, which is a higher fatty acid salt, it depends on the chain length of the fatty acid, and in the case of relatively short chain length such as lauric acid or myristic acid, the Kraft point is low and the solubility in water or Good foaming but strong primary skin irritation, and has the drawback that excessive sebum is removed by washing.In the case of long-chain palmitic acid or stearic acid, primary skin irritation is reduced but Kraft point is high. There are drawbacks in usability such as low solubility in water and poor foaming.

Further, when an unsaturated fatty acid is used, the Kraft point is lowered and the solubility in water is improved, but the foaming is poor and the usability is poor. Further, conventionally, the unsaturated fatty acids generally provided are oleic acid,
It is a mixture of linoleic acid, linolenic acid, etc., especially those with a high degree of unsaturation are unstable to oxidation, and the lipid peroxide produced may cause skin inflammation, edema, necrosis, pigmentation, etc. Has been pointed out.

The present invention has been made in view of the above circumstances, and has both safety and usability, such as excellent foaming, foam retention and dirt removal during cleaning, and great suppression of rough skin, especially It is an object of the present invention to provide a detergent composition suitable for people with sensitive skin and people with atopic skin.

[0008]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that when a salt of a fatty acid having a specific composition and a specific hydrophilic nonionic surfactant are used in combination. In addition, it has good detergency such as foaming, foam retention, and stain removal during washing, and gives a moist feeling and gentleness to the skin after washing, and further suppresses skin roughness due to residual active agent over time. The present invention has been completed based on this finding.

That is, the present invention is 80 for all fatty acids.
5 to 90% by weight of an alkali metal or organic salt of a fatty acid containing oleic acid in a composition ratio of not less than 10% by weight, and 0.1 to 10% by weight of a hydrophilic nonionic surfactant having an HLB value of 13 or more due to Griffin. It is a detergent composition characterized by containing, in a preferred embodiment, the alkali metal or organic salt of a fatty acid is potassium salt, sodium salt, any one or a combination of basic amino acid salt,
Moreover, the hydrophilic nonionic surfactant is polyglycerin (m).
Polyoxybutylene (n) alkyl ether (m = 4 to
20, n = 4 to 20), polyoxyethylene (n) hydrogenated castor oil (n = 40 to 100), or any combination thereof.

The present invention will be described in detail below.

The alkali metal or organic salt of a fatty acid applicable to the present invention first contains oleic acid in a proportion of 80% by weight or more, preferably 90% by weight or more, based on the total fatty acids. It is necessary.
Regarding such fatty acids, various fatty acids may be mixed and prepared at the time of use, or a commercially available product (for example, Extra Olein 90 manufactured by NOF CORPORATION) may be obtained and used.

On the other hand, examples of the counter base which forms a salt with a fatty acid include alkali metals such as sodium and potassium, basic amino acids such as arginine, lysine and histidine, and triethanolamine, but sodium and potassium are preferred. , Basic amino acids are used. These counter bases may be added to the detergent composition after forming a salt with a fatty acid in advance, or may be added separately when preparing the detergent composition to form a salt in the formulation system. Is also good.

If the composition ratio of oleic acid to the total fatty acid is less than 80% by weight, irritation to the skin is increased, which is not preferable in terms of safety and stability is deteriorated.

Next, as the hydrophilic nonionic surfactant similarly applied to the present invention, a highly hydrophilic one having an HLB value of 13 or more due to Griffin is selected. Such hydrophilic nonionic surfactants are themselves water-soluble,
Further, the residual property after washing is low, and the poor stickiness of the fatty acid salt can be improved.

As a concrete example, polyglyceryl (m) polyoxybutylene (n) stearyl ether,
Polyglyceryl (m) polyoxybutylene (n) cetyl ether and other polyglyceryl (m) polyoxybutylene (n) alkyl ethers (m = 4 to 20, n = 4 to 2)
0), polyoxyethylene (n) sorbitan monopalmitate, polyoxyethylene (n) sorbitan monooleate and other polyoxyethylene (n) sorbitan fatty acid esters (n = 20 or more), polyoxyethylene (n) glyceryl monooleate , Polyoxyethylene (n) glyceryl monostearate and other polyoxyethylene (n)
Glyceryl fatty acid ester (n = 15 or more), polyoxyethylene (n) cetyl ether, polyoxyethylene (n) behenyl ether, polyoxyethylene (n) oleyl ether, and other polyoxyethylene (n) alkyl ethers (n = 6) ~ 50), polyoxyethylene (n)
Examples include polyethylene glycol (n) fatty acid esters (n = 25 to 45) such as monolaurate and polyoxyethylene (n) monostearate, and polyoxyethylene (n) hydrogenated castor oil (n = 40 to 100). However, among these, polyglyceryl (m) polyoxybutylene (n) alkyl ether (m = 4 to 20, n = 4 to 2)
0), and polyoxyethylene (n) hydrogenated castor oil (n = 40 to 100) are preferable.

In the present invention, the detergent composition contains 5 to 90% by weight, preferably 10 to 60% by weight, of the above-mentioned alkali metal or organic salt of fatty acid, and 0.1 to 0.1% by weight of a hydrophilic nonionic surfactant. 10% by weight, preferably 0.5-5% by weight
contains.

If the content of the alkali metal or organic salt of fatty acid is less than 5% by weight, foaming is poor and the detergency is lowered, and if it exceeds 90% by weight, the usability such as foamyness is considerably deteriorated.

On the other hand, if the content of the hydrophilic nonionic surfactant is less than 0.1% by weight, the effect of improving foam stickiness is not observed, and if it exceeds 10% by weight, foaming is reduced.

In the detergent composition of the present invention, in addition to the above-mentioned essential components of the alkali metal or organic salt of fatty acid and the hydrophilic nonionic surfactant, the additives usually added to the detergent composition are included. It can be blended in a timely manner.

Particularly, the polyhydric alcohol has a function of giving a moist feeling during and after washing as a moisturizing component, and is blended in a range of 50% by weight or less in consideration of influence on foaming. Specific examples include diethylene glycol monoethyl ether, glycerin, propylene glycol, sorbitol, 1,3-butanediol and the like.

In addition, water-soluble polymers such as sodium alginate, methylcellulose and sodium carboxymethylcellulose, antioxidants such as tocopherol, butylhydroxyanisole and dibutylhydroxytoluene, ethylenediaminetetraacetic acid A sequestering agent represented by the alkali metal salt, tocopherol acetate, retinol palmitate,
Various additives such as vitamins such as pyridoxine hydrochloride, parabens, isopropylmethylphenol, preservatives such as phenoxyethanol, fragrances and pigments can be used.

[0022]

EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples. The mixing ratio is parts by weight.

Example 1 Fatty acid (trade name: Extra olein 90) 30.0 Potassium hydroxide 6.0 Polyglyceryl (9) Polyoxybutylene (11) Stearyl ether 2.0 Glycerin 5.0 Purified water 57.0

Example 2 Fatty acid (trade name: Extra olein 90) 30.0 Potassium hydroxide 6.0 Polyoxyethylene (100) hydrogenated castor oil 2.0 Glycerin 5.0 Purified water 57.0

Example 3 Fatty acid (Oleic acid content 92% by weight) 30.0 Potassium hydroxide 6.0 Polyglyceryl (8) Polyoxybutylene (9) Cetyl ether 2.0 Polyoxyethylene (60) hydrogenated castor oil 1. 0 Glycerin 5.0 Purified water 55.0

Example 4 Fatty acid (oleic acid content 95% by weight) 10.0 Potassium hydroxide 2.5 Polyglyceryl (13) Polyoxybutylene (14) Stearyl ether 1.0 Propylene glycol 10.0 Purified water 76.5

Example 5 Fatty acid (trade name: extra olein) 30.0 Sodium hydroxide 3.8 Polyoxyethylene (60) hydrogenated castor oil 3.0 1,3-butylene glycol 15.0 Purified water 48.2

Example 6 Fatty acid (oleic acid content 90% by weight) 50.0 Arginine 2.77 Polyoxyethylene (20) glyceryl monooleate 2.0 Glycerin 10.0 Purified water 35.23

Example 7 Fatty Acid (Oleic Acid Content 88% by Weight) 70.0 Potassium Hydroxide 17.0 Polyglyceryl (5) Polyoxybutylene (5) Oleyl Ether 1.0 Propylene Glycol 5.0 Acetic Acid dl-α-tocopherol 0.3 Purified water 6.7

Comparative Example 1 Fatty acid (trade name: Extra olein) 30.0 Potassium hydroxide 6.0 Glycerin 5.0 Purified water 62.0

Comparative Example 2 Fatty acid (C12 to C18 mixture) 19.5 Coconut oil fatty acid methyl taurine sodium 6.6 Sodium lauryl sulfate 10.0 Triethanolamine 4.4 Propylene glycol 10.2 Ethanol 6.0 Parahydroxybenzoic acid Ester 0.3 Purified water 43.0

[Comparative Experiment] Using the detergent compositions of Examples 1 to 7 obtained by the present invention and the detergent compositions of Comparative Examples 1 and 2 known as mild detergents among conventional products, skin was used. Experiments for evaluation of suppression and sensory evaluation were conducted.

1. Skin Roughness Inhibition Evaluation (Method) 45 female panelists who feel rough skin on a daily basis are randomly divided into 9 groups (5 persons each), and the present invention products (Examples 1 to 7) and comparative products (Comparative Example 1). ~ 2) was used as a face wash once each morning and evening for 2 weeks.

(Evaluation method) Replicas of the facial cheeks were collected before the start of the test and after 2 weeks, and the morphological changes on the skin surface were observed with a micrograph (× 15), and the average value was determined according to the following rating criteria. (N = 5) was calculated. The results are shown in Table 1.

(Rating Criteria) 1: The hills are full of fluff and are regularly arranged. Also, the skin groove is clear and clear. 2: The hills are quite fluffy and are regularly arranged except for a part. Also, the skin groove is quite clear. 3: The hills are slightly raised, and some are lined up regularly. Also, the skin groove is not clear except for a part. 4: The hills are flat without bulging and not uniform. The skin groove is shallow and unclear.

[0036]

[Table 1]

As shown in the results of Table 1, the detergent composition according to the present invention has significantly better skin texture than the comparative detergent composition known as a mild detergent among conventional products. It was demonstrated that the effect was suppressed and the improvement effect was high.

2. Sensory Evaluation (Method) Using 10 female panelists, each cleaning composition of the present invention products (Examples 1 to 7) and comparative products (Comparative Examples 1 and 2) was taken on a soft towel during bathing, To wash, foaming during the washing, sticky, removing dirt, easy rinsing,
For each evaluation item of the moist feeling after washing and the feeling of gentleness to the skin, an average value (n = 10) was calculated after making a judgment according to the evaluation criteria (10-step evaluation) in Table 2. The results are shown in Table 3.
Shown in.

[0039]

[Table 2]

[0040]

[Table 3]

As is clear from the results shown in Table 3, the cleaning composition according to the present invention has foaming during cleaning, easiness of rinsing and moist feeling after cleaning, as compared with the cleaning composition of the comparative product.
It was proved to be excellent in kindness.

[0042]

EFFECTS OF THE INVENTION According to the present invention, as compared with the conventional detergent composition, the washing property is good at the time of washing and the irritation to the skin is low, the feeling of use is good after washing, and the skin caused by the residual active agent is used. It is possible to suppress the skin roughness caused by the cleaning agent without causing the skin roughness.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical indication C11D 1:72) (72) Inventor Masayoshi Nagai 560 Kashio-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pola Chemical Industry Co., Ltd. Company Totsuka Institute

Claims (3)

[Claims] 1. An HLB value of 1 to 5 to 90% by weight of an alkali metal or organic salt of a fatty acid containing oleic acid in an amount of 80% by weight or more based on the total fatty acids and Griffin.
A cleaning composition comprising 0.1 to 10% by weight of a hydrophilic nonionic surfactant which is 3 or more. 2. The alkali metal or organic salt of fatty acid is potassium salt, sodium salt or basic amino acid salt.
The cleaning composition according to claim 1, which is one or any combination. 3. The hydrophilic nonionic surfactant is polyglyceryl (m) polyoxybutylene (n) alkyl ether (m = 4 to 20, n = 4 to 20), polyoxyethylene (n) hydrogenated castor oil (n). = 40-100) any one of
The detergent composition according to claim 1 or 2, which is one or an arbitrary combination.