JPS62205198A - Liquid detergent composition for body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid body cleansing agent that comes into direct contact with human skin and is used for hair, body, face washing, hand washing, shaving, etc.

[Conventional technology]

Hitherto, as cleaning agents for such purposes, fat fdI soap, alkyl sulfate ester salts, polyoxyethysulfate ester hydrochloride ester salts, acylated methyl taurine salts, etc. have been used.

In addition, regarding the combination of fatty acid SEC/ and amphoteric surfactant-1, JP-A-51-31706, 1-31707,
No. 31708, No. 55-102699, No. 57-9
No. 2096, etc., and its purpose is to improve foaming power and detergency.

Fatty acid soap forms a high-quality foam and is smooth.

It has the advantage that it has good elasticity and does not leave a slimy feeling, but it has the disadvantage that it has a strong alkaline action and has a degreasing effect on sebum.

Ampholytic surfactants are neutral and have a pH close to that of the skin, and are gentle on protein denaturation, but because they strongly adsorb to the skin, they must be removed during rinsing. It has the disadvantage that it does not give a clean feeling after washing.

[Problem that the invention seeks to solve]

The object of the present invention is to obtain a liquid cleaning composition for the body that does not have excessive degreasing power, has good rinsability, does not leave a slimy feeling, and has excellent foaming power.

[Means for solving problems]

The invention contains the following three components (a), (b), and (b), the content ratio of these is (a)>(b)≧(e), and the pH of the aqueous solution is 7. 5 to 9.3.

(a) Fatty triethanolamine salt having 8 to 22 carbon atoms 10 to 35 t (hl
Charcoal! 2-alkyl or 2-alkenyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (hereinafter referred to as imidazolinium betaine) having an a7-17 alkyl group or alkenyl group 3-20 folds: straight chain ( c) Alkyl or alkenyl-dimethylamino vinegar having an alkyl or alkenyl group having 8 to 18 carbon atoms, 1. The fatty acids having 8 to 22 carbon atoms constituting the component (a) with a 1 to 10 weight limit are caprylic acid, capric acid, lauric acid (1Y, myristic acid, valmitic acid, palmitoleic acid, and stearic acid). , oleic acid, linoleic acid, pehe/1stun, erucic acid, etc.
These mixtures include coconut oil fatty acids, hydrogenated coconut oil fatty acids, palm oil fatty acids, hydrogenated palm oil fatty acids, tallow fatty acids,
Examples include hydrogenated beef tallow fatty acids. In particular, when increasing the foaming power, it is preferable to use a large amount of lauric acid or myristic acid.

When the content of component (a) is less than 10% by weight and i1t%, the slimy feeling becomes strong and the foaming properties and rinsing properties are reduced.

Moreover, when it exceeds 35% by weight, the degreasing power becomes strong and the shape of the product becomes gel-like.

Component (b) imidazo IJ nium betaine is produced from 2-alkyl or 2-alkenyl-N-hydroxyethylimidazolyte, which is a condensation product of a fatty acid having 8 to 18 carbon atoms and hydroxyethylethylenediamine, and sodium monochloroacetate. It is a derived amphoteric surfactant.

In particular, when increasing the foaming property, it is preferable to use imidazolinium petai/derived from laurin shun or myristin 1fI.

If the content of component (b) is less than 3 by weight, the degreasing power will be undesirably strong, and if it exceeds 20 by weight, the viscosity will increase and become difficult to handle.

Component (c), the alkyl betaine, is made from an alkyl or alkenyl dimethylamine having an alkyl group or alkenyl group having 8 to 18 carbon atoms and monochlorinated sodium, and the alkylamidobetaine is made from an alkyl or alkenyl-amidopropyl dimethylamine. It is an amphoteric surfactant derived from monochloride and sodium peroxide. In particular, in order to increase the foamability, it is preferable to use lauryl or myristyl-betaine or lauryl or myristyl-amide betaine.

(c) If the content of the component is 1% by weight, the foaming property will not be measured, and if it exceeds 10 weight tqb, the rinsing property will decrease.
It is not preferable because it gives a strong slimy feeling.

A two-component combination system of components (a) and (b), or Fi (a) and (e), both exhibit excessive degreasing power.

Moreover, if a large amount of betaine, which is an amphoteric surfactant, is added in order to reduce the degreasing power, the rinsability and slimy feeling will become stronger, which is not preferable as a body cleansing agent. However, when components (b) and (e) are blended with component (a), the slimy feeling can be reduced even if a relatively large amount of betaines is blended. Practically, (a), (b), (b)
It is preferable that the blended heavy blue ratio of the three components is (a) fatty acid triethanolamine salt>(b) imidazolinium betaine>(c) alkyl betaine or alkylamide betaine.

The composition of the present invention has a pH of 5-line aqueous solution of 7.5 to 9.3.
．． Preferably it is 7.5 to 8.5. When the pH is lower than 7.5, the foaming property decreases and the slimy feeling becomes strong, and when the pH is around 5.5, separation occurs and the
If it exceeds , the degreasing power will be too strong. Therefore, if the pH of the aqueous solution of the three-component mixture is outside the above range, acids such as sulfuric acid, hydrochloric acid, phosphorus, etc., sodium hydroxide, potassium hydroxide, triethanolamine, etc. It is adjusted within the above range using a base such as.

The liquid body cleansing agent of the present invention does not have excessive degreasing power, foams well, has improved sliminess and rinsability, and provides a moist feeling after drying only when the three components satisfy the above conditions. It becomes a composition.

The liquid body cleansing composition of the present invention contains known alkyl sulfate salts, polyoxyethylene alkyl sulfate salts, afluorated methyl tauri/salts, acylated methyl taurate salts, acylated methyl taury salts, etc. as cleaning active ingredients, within the range that does not impair the effects of the present invention. Sarcosine salt, sulfoconomonolyric acid polyoxy/ethylene fatty acid ethanolamide ester salt, alkylamino acid (salt), acylated amino acid (salt), '-fatty acid monoglyceride sulfate ester salt, benzalkonium chloride, alkyltrimethylammonium chloride, polyoxy Ethylene alkyl ether, polyoxy7ethyl V/(polyoxypropylene) fatty acid ester, fatty acid alkanolamide, alkyldimethylamine oxide, alkyldihydroquine ethylamine oxide, polyoxyethylene alkylamine, polyoxy7ethylene sorbitan fatty acid ester, etc. Ethanol, inpropanol, ethylene glycol, fluoropylene gellicol, glycerin, 1,3-butanediol, ethylene glycol monoethyl ether as a solubilizer, higher fatty acids, higher alcohols, esters thereof, liquid paraffin, etc. as oily components. Water-soluble polymer compounds such as polyvinyl alcohol and sodium alginate are used as adhesives, dibutylhydroxytoluene and butylhydroxanisole are used as antioxidants, and ethylenediaminetetraacetic acid or its alkali metal salts, hydroxyethanediphosphonic acid or its salts are used as sequestering agents. Alkali metal salts and the like can be added.

〔Effect of the invention〕

The liquid body cleansing composition of the present invention has excellent foaming power, good rinsability, does not leave a slimy feeling, and does not have excessively strong degreasing power.

For this reason, it is suitable as a cleansing agent for hair, body, face wash, hand wash, beard shave, etc.

〔Example〕

The present invention will be explained by examples. Table 1 shows the composition and evaluation of the liquid body cleanser.

The fatty acid potassium salt, fatty acid sodium salt, and fatty acid triethanolamine salt of component (a) are a mixture of lauric acid and myristic acid at a weight ratio of 70:30.

Component (b) imidazolinium betaine is 2-cocoalkyl-N-calhokitsumethyl-N-? -)" Loki/ethylimidazolinium petai/ was used, the alkyl betaine of component (e) was lauryldimethylaminoacetic acid petai/, and the alkylamidobetaine was laurylamide propyl dimethylaminoacetic acid petai/.

The evaluation method is as follows.

(1) pH of 5% aqueous solution An ior sample was taken, diluted with KM distilled water so that the sum of the three components (a), (b), and (c) was 5% by weight, and the pH was measured with a pH meter.

(2) Foaming power was measured at 30° C. using the Ross-Miles method on an aqueous solution in which the sum of the three components (at (b) and (c) was 1.0%).

A foaming power of 230 or higher is practical.

(3) Rinseability, slimy feel, and degreasing 10 panelists took sample 5d onto a bath sponge and washed their fingers and forearms three times each with warm water at about 40°C. They were evaluated based on the criteria and the average score was calculated.

Rinseability was evaluated as having a quick defoaming state when flushed with foaming water, and as for sliminess, a product with little sliminess was evaluated as good, and a product with no stiffness was evaluated as good.

The evaluation criteria are as follows.

Rinseability: Good 4 points, Slightly Good 3 Points Slightly Poor 2 Points, Poor 1 Point Sliminess: Not 4 Points, Not at all 3 Points
: Good 4 points, Fairly good 3 points Fairly bad 2 points, Bad 1 point For each item, if the average score is 3 points or more, it is judged to be practical.

Table 1 shows that the liquid body cleansing composition of the present invention has excellent foaming power, good rinsability, does not leave a slimy feeling, and does not have excessive degreasing power. Moreover, from samples A7 and A15 to A18, it can be seen that the effect of the present invention is not observed when the pH is outside a specific range.

Claims (1)

[Claims] Contains the following three components (a), (b) and (c), the content ratio of which is (a)>(b)≧(c), and a 5% aqueous solution. A liquid body cleansing composition having a pH of 7.5 to 9.3. (a) 10-35% by weight of fatty acid triethanolamine salt having 8 to 22 carbon atoms (b) 2-alkyl or 2-alkenyl-N-carboxymethyl-N- having an alkyl group or alkenyl group having 7 to 17 carbon atoms 3 to 20% by weight of hydroxyethylimidazolinium betaine (c) 1 to 10% by weight of alkyl or alkenyl-dimethylaminoacetic acid betaine or alkyl or alkenyl-amidopropyl dimethylaminoacetic acid betaine having an alkyl or alkenyl group having 8 to 18 carbon atoms %