KR950013917B1 - Detergent composition - Google Patents

Abstract

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Description

Detergent composition

The present invention relates to a liquid detergent composition suitable for cleaning the body. Examples of such compositions are shower gels and bath foams. A requirement of such compositions is that foaming should occur upon use.

Skin softening substances are mainly used in skin creams for the purpose of restoring and maintaining the moisture content of the skin. At least some of these skin-softening substances inherently had antifoam properties, which appeared to be unsuitable for incorporation into products requiring the use of foaming during use.

However, the inventors have now found that it is possible to incorporate such skin softening substances into liquid products.

Accordingly, the present invention provides an aqueous liquid detergent composition containing the foaming detergent active substance and the emollient.

A. Detergent active substance

Detergent active materials used in the present invention are selected from anionic, amphoteric and nonionic detergents. The detergent active substance is preferably a mixture of the following substances.

A1: soap anionic detergent

A2: amphoteric or polar nonionic detergent

Preferred anionic detergents (A1) are alkyl ether sulfates, acyl isethionates, alkyl glycerol ether sulfonates, acyl glutamate, acyl peptides, sarcosinates, ester carboxylic acids, α-olefin sulfonates, sulfosuccinates, Alkyl benzene sulfonates, amides of N-methyl taurine, α-sulfofatty acid and alkyl sulfate. Such detergents generally have C ₈ -C ₂₀ alkyl or acyl groups with anionic groups.

It is particularly preferable that the second detergent (A2) is an amphoteric surfactant such as betaine, sulfobetaine or amidobetaine. These are all zwitterions. Less preferred are acyl ethanolamide, acyl diethanolamide and amine oxides, all of which are polar nonionic surfactants.

B-skin softener

This material can be selected from the following three types.

B1-skin moisturizer

B2-occlusive agent

B3-humectant

The skin moisturizer (B1) is a compound that improves water retention by the skin and attracts moisture into the skin. Typical moisturizing materials include urea, lactic acid, pyrrolidone carboxylic acids, amino acids and salts of these acids.

The occlusion agent (B2) is a substance which forms a thin film with limited permeability on the skin, preserves moisture in the skin and prevents dehydration. There are a wide variety of occlusion agents. Generally, the occluding agents are hydrophobic oils and waxes. Examples of these types of occlusion agents and their respective examples are as follows.

1. Hydrocarbon oils and waxes. Examples thereof include mineral oil, wasserine, paraffin, ceresin, ozokerite, microcrystalline wax and the like.

2. Silicone oil. Examples are dimethyl polysiloxanes, methylphenyl polysiloxanes, silicone glycol copolymers.

3. Triglyceride Esters. Examples are vegetable and animal fats and oils.

4. Glyceride esters and esters such as acetylated monoglycerides and ethoxylated monoglycerides.

5. Alkyl and alkenyl esters of C ₁₀ -C ₂₀ fatty acids. Examples are hexyl laurate, isohexyl laurate, isohexyl palmate, isopropyl myristate, isopropyl palmitate, decyl oleate, isodecyl oleate, hexadecyl stearate, decyl stearate, isopropyl isostea Latex, diisopropyl adipate, diisohexyl adipate, dihexyldecyl adipate, diisopropyl sebacate, lauryl lactate, myristyl lactate, cetyl lactate, oleyl myristate, oleyl stearate, And oleyl oleate.

6. C ₁₀ -C ₂₀ fatty alcohols. Examples include lauryl, myristyl, cetyl, hexadecyl, stearyl, isostearyl, hydroxystearyl, oleyl, ricinoleyl, behenyl, erucyl, and 2-octyl dodecanyl alcohol, and the like. .

7. Lanolin and its derivatives. Lanolin, Lanolin Oil, Lanolin Wax, Lanolin Alcohol, Lanolin Fatty Acid, Isopropyl Lanolin, Ethoxylated Lanolin, Ethoxylated Lanolin Alcohol, Ethoxylated Cholesterol, Propoxylated Lanolin Alcohol, Acetylated Lanolin, Acetylated Lanolin Alcohol, and Lanolin Alcohol Linoleate and the like are examples of emollients derived from lanolin.

8. Natural waxes, esters and ethoxylated natural waxes, beeswax, spermaceti, myristyl myristate, stearyl stearate, polyoxyethylene sorbitol beeswax, carnova wax, and candelilla wax.

Particularly preferred materials among these are C ₂ -C ₄ alkyl esters of C ₁₂ -C ₁₈ fatty acids such as isopropyl myristate and isopropyl palmitate.

Examples of humectant (B3) are C ₂ -C ₆ polyols, in particular glycerol, sorbitol, propylene glycol and 1,3-butylene glycol. Another example of humectant is polyethylene glycol having a molecular weight of about 100 to about 1500. Humectant does not form an obstructive membrane by itself but can cooperate with other materials to form an obstructive membrane. Therefore, it is preferred that humectant is not the only class of emollients present.

The total amount of emollients included in the composition of the present invention is preferably in the range of 0.1 to 10% by weight, more preferably 0.2 to 5% by weight of the composition. More specifically, the emollient preferably contains 0.1 to 2% by weight of the composition, more preferably 0.2 to 1% by weight of occlusion agent (B2). When it contains a skin moisturizer (B1), the amount thereof is suitably 0.02 to 5% by weight, more preferably 0.05 to 2% by weight of the composition. When it contains humectant (B3), the amount is generally preferably 15% by weight or less of the composition, and generally 0.1 to 15% by weight of the composition, more preferably 0.5 to 5 or 8% by weight.

Particularly preferred weight ratios of the three kinds of emollients are as follows.

B1: B2: B3 = 0-15: 2-10: 5-50

The preferred blending amount of the detergent active substance is in the range of 3-40% by weight, preferably 5-25% by weight of the total composition. The anionic detergent active material (A1) is suitably present in an amount of 5 to 20% by weight of the composition, and the second detergent active material (A2) is 0.5 to 15% by weight of the composition, more preferably 1 to 10% by weight. It is suitable to be present in an amount of%. The weight ratio A1: A2 of these two detergent active substances is preferably in the range of 10: 1 to 1:10, more preferably 9: 1 to 1: 2.

The weight ratio of detergent active material to emollient is preferably in the range of 20: 1 to 5: 1. Alternatively or additionally, the weight ratio of detergent active material to occluder is preferably in the range of 10: 1 to 100: 1.

A preferred form of the invention is a composition containing the A1, A2 and B1, B2 and B3 materials described above in the following amounts.

A1: 5-20 wt%

A2: 0.5-15 wt%

B1: 0.02-5% by weight

B2: 0.1-2 wt%

B3: 0-15 wt%, preferably 0.5-8 wt%

The composition according to the invention may contain other components as well. In particular, in order to adjust the viscosity of a composition, you may mix | blend an electrolyte, a midpoint agent, or both. The composition of the present invention preferably has a viscosity of 10,000 to 1000 mPs, more preferably 8000-2000 mPs at a shear rate of 10 seconds ⁻¹ .

Thickeners include synthetic crosslinked polymers such as crosslinked polyacrylates. Other classes of thickeners include polysaccharides such as vegetable mucins, alginates, cellulose derivatives and xanthan gum. The amount of thickener used is 0.01 to 5% by weight, more limitedly 0.05 to 2% by weight of the composition.

Other ingredients that can be blended into the compositions of the present invention include pearlescers or pearlescents, flavorings, colorants and antioxidants. Preservatives may also be included.

Typically, free fatty acids of C ₈ -C ₂₂ may or may not be included. Although soap may be blended, it is preferable not to blend. When soap or fatty acid is blended, the blending amount is preferably not more than 5% by weight of the composition, and more preferably incorporation amount is in the range of 0.5 to 2.5% by weight of the composition.

One feature of the present invention is that the emollient (B) can be blended into a stable emulsion in the same relative proportions. The concentration of emollients in such emulsions is equal to or higher than that in the detergent compositions of the present invention.

This feature makes it possible to blend a composition in one product form (eg a skin moisturizing liquid or cream) into another product form (eg a liquid detergent composition of the invention).

When the present invention takes this form, it may be defined as an aqueous liquid detergent composition containing a non-aqueous detergent active substance and a non-aqueous component of a moisturizing emulsion consisting of a skin softener.

Such moisturizing emulsions may contain other ingredients that may also be included in detergent compositions, such as thickeners, milking agents or pearling agents.

Of particular interest to the invention are those in which the detergent active substance contains C ₈ -C ₂₂ fatty acyl isethionate. Fatty acyl isethionate is known to be gentle on the skin but poorly soluble. The inventors have combined fatty acyl isethionates with amphoteric or polar nonionic surfactants to obtain a transparent and isotropic solution (when no milky, pearlescent or other non- detergent insolubles are contained). Observed.

Accordingly, a form of the invention is a detergent active material consisting of A) A ₈ ) C ₈ -C ₂₂ acyl isethionate which is at least 2% by weight of the composition, and A2) Amphoteric or polar nonionic detergent which is at least 1% by weight of the composition. 3 to 40% by weight and B) 0.1 to 10% by weight emollient, wherein the weight ratio of acyl isethionate to detergent (A2) is from 10: 1 to 1: 4, preferably from 5: 1 to 1: 2 And the detergent active substance present in the composition may be defined as a detergent composition characterized by forming a clear solution in distilled water at the same concentration.

The detergent active material present may comprise an additional anionic detergent (A1), the amount of which is such that the weight ratio of the total anionic detergent (A1) to the second detergent (A2) is maintained within the range of 10: 1 to 1: 2. to be.

The composition of this invention can be manufactured by simply mix | blending the component and water. For convenience, a preliminary mixture of some components may be prepared and combined. In general, it is desirable to order the addition so that thickening can occur after most of the formulation has taken place.

Example 1

A shower gel having a composition as shown in Table 1 below was prepared.

In each case anionic detergent (A1) was sodium lauryl ethersulfate (SLES) with an average of three ethylene oxide groups per molecule. The second detergent (A2) was coconut net amido propyl betaine (CAPB) and the milking agent was polystyrene latex. Ethylene glycol distearate (EGDS) was used as the pearlescent agent as an alternative to the bleach.

"NMF" refers to a mixture of commercially available substances that are equivalent to natural moisturizing factors in the skin. Such mixtures are available from Dragoco as HYDROVITON®, Goldsmith from LACTIL®, and from Ajinomoto as PRODEW®. The NMF used consists of 40% free amino acid, 12% pyrrolidone carboxylic acid, 7% urea, 12% lactate and other components. Thus, this material contained at least 70% by weight emollient.

TABLE 1

The four compositions were evaluated by a panel of ten. Each panelist wore surgical gloves. Each glove was first washed with a standard detergent composition in running water at 30 ° C. 1 g of the test composition was then dispensed from the syringe to the palm of each panelist. Panelists were asked to wash their hands as they would normally wash using water at 30 ° C and French hardness (FH) 26 °. The amount of foam and the creaminess of the perceived foam were then quantified. The actual amount of foam generated was assessed by collecting the foam in an inverted funnel and then transferring the foam to a graduated cylinder.

The foaming ability of the composition was also measured by the following test. 5 g of the composition was placed in a graduated separatory funnel. 50 g of water was added thereto. The hardness of this water at 25 ° C. was FH 26 °. The funnel was shaken for 10 seconds and the bubble level was measured and recorded as "initial bubble". Drain the solution under the foam, add 50 g of water, shake the funnel again, and record the amount of foam. The solution under the foam was drained, then watered and shaken until the foam disappeared. The number of 50 g portions of water added is referred to as the "number of rinses," indicating the amount of water needed to rinse the foam. An amount of water was added and the amount of foam produced was recorded each time the separatory funnel was shaken. The sum total of this bubble amount is called cumulative bubble amount.

Table 2 shows the sum of the standardized panel scores for each of the four compositions, the cumulative amount of foam and the number of rinses (ie, the number of additions of a portion of water added until no foam remained).

As a result, it was found that in the compositions B and D, the blending of the emollient had little or no adverse effect on foaming. In the case of Compositions A and B, the panel test and the funnel test showed the opposite result, but it was found that the effect of incorporating emollients was much less than the effect of converting the bleach to pearl.

TABLE 2

Example 2

Creams were prepared using emollients such as those used in Example 1 and pearls or milks. This cream contained cross linked polyacrylates. The composition is as follows.

The method of making the cream was to form an emulsion by mixing all of the above ingredients with water, incorporating the polyacrylate in acid form supplied by the manufacturer and then shaking it. The composition thus prepared was a viscous, stable cream.

Example 3

This liquid composition was generally prepared in the same manner as in Example 1, but with sulfosuccinate instead of betaine. One composition contained 25 weight percent glycerol. The composition is as follows.

Each composition was evaluated by the same panel test as in Example 1, and the results were as follows.

Example 4

The same procedure as in Example 3 was carried out, but one composition contained 10% sodium lactate. The results were as follows.

From Examples 3 and 4, it was found that up to 25% by weight of glycerol and up to 10% by weight of lactate can be blended without causing serious adverse effects.

Example 5

In general, shower gels were formulated in the same manner as in Example 1D, but containing different detergent active material systems containing sodium cocoyl isethionate.

The foaming ability of this composition was compared to two compositions similar to Example IC and ID. Three compositions are shown in Table 4 below. SLES, CAPB, NMF and pearl were the same materials used in Example 1.

The test method was as follows. 2 g of test composition was dissolved in 20 ml of distilled water. 20 ml of this solution was placed in a 100 ml stopper metering cylinder. Shake this cylinder 10 times, then change it to the other hand and shake it again 10 times. Immediately, the height of the foam was measured. This procedure was performed twice for each product and the result is the average of two measurements.

The data obtained by this method is shown in Table 4.

TABLE 4

Claims (18)

(A) Alkyl ether sulfate, acyl acethionate, alkyl glycerol ether sulfonate acyl glutamate, acyl peptide, sarcosinate, ester carboxylic acid, α-olefin sulfonate which is at least 5% by weight relative to the total weight of the composition A1) , Betaine, sulfobetaine, and at least 1% by weight relative to the total weight of the composition, and a soap anionic detergent selected from sulfosuccinate, alkyl benzene sulfonate, amide of N-methyl taurine and α-sulfofatty acid. and amido mixture of foaming detergent active in both modulus detergent selected from betaines material, (B) B1) skin moisturizer, B2) occlusion claim, B3) and containing an emollient selected from hyumek tanteu, and mixtures thereof, 10 seconds ^- Aqueous liquid detergent composition, characterized in that the viscosity in the range of 10,000 to 1,000 mPas at a shear rate of ¹ . 2. The detergent composition of claim 1, wherein the skin moisturizer is selected from urea, lactic acid, pyrrolidone carboxylic acid, amino acids and salts of these acids. The method of claim 1, wherein the occluding agent is selected from hydrocarbon oils and waxes; Silicone oil; Triglyceride esters; Glyceride esters, acetylated monoglycerides, alkoxylated monoglycerides; Alkyl and alkenyl esters of C ₁₀ -C ₂₀ fatty acids; C ₁₀ -C ₂₀ fatty alcohols; Lanolin and its derivatives; And natural waxes, esters thereof and alkoxylated natural waxes. 2. The detergent composition of claim 1, wherein the humectant is selected from C ₂ -C ₆ polyols and polyethylene glycols having a molecular weight of about 100 to about 1500. 2. The detergent composition according to claim 1, wherein the emollient (B) is present in an amount of 0.1 to 10% by weight of the composition. The method according to claim 1, wherein when the skin moisturizer (B1) is present, the amount is 0.02 to 5% by weight of the composition, and when the occlusion agent (B2) is present, the amount is 0.1 to 2% by weight of the composition, and humectant ( B3), if present, its amount is up to 15% by weight of the composition. 7. The detergent composition according to claim 6, wherein the weight ratio of the three kinds of emollients is B1: B2: B3 = 0-15: 2-10: 5-50. 2. The detergent composition according to claim 1, wherein the detergent active substance (A) is present in an amount of up to 40% by weight of the composition. The method of claim 1, wherein the soap anionic detergent (A1) is present in an amount of 5 to 20% by weight of the composition, the amphoteric detergent (A2) is characterized in that it is present in an amount of 1 to 15% by weight of the composition. Detergent composition. The detergent composition according to claim 9, wherein the weight ratio of the two detergent active substances is A1: A2 = 10: 1 to 1:10. The detergent composition according to claim 1, wherein the weight ratio of the foaming detergent active material (A) to the emollient (B) is A: B = 20: 1 to 5: 1. The detergent composition according to claim 1, wherein the weight ratio of the foaming detergent active material (A) to the occlusive agent (B2) is A: B2 = 10: 1 to 100: 1. 2. The emollient of claim 1, wherein the emollient comprises a skin moisturizer of from 0.02 to 5% by weight of the B1-composition, an occlusive agent from 0.1 to 2% by weight of the B2-composition, and humectant from 0 to 15% by weight of the B3-composition. Detergent composition, characterized in that. The detergent composition according to claim 1, further comprising at least one additional component selected from thickeners, pearls or milks, flavors, colorants, antioxidants, preservatives, fatty acids and soaps. 2. The detergent composition according to claim 1, wherein the detergent active substance (A) contains C ₈ -C ₂₂ fatty acyl isethionate. (A) A1) C ₈ -C ₂₂ acyl isethionate, which is at least 2% by weight of the composition, and A2) Amphoteric detergents selected from betaine, sulfobeta and amidobetaine, which are at least 1% by weight of the composition. 3 to 40% by weight of detergent active material and 0.1 to 10% by weight of B) emollient, wherein the weight ratio of acyl acethionate to detergent (A2) is 10: 1 to 1: 4 and the detergent activity present in the composition The material forms a transparent solution in distilled water at the same concentration and has a viscosity in the range of 10,000 to 1,000 mPas at a shear rate of 10 seconds ^-1 . The detergent composition of claim 16 comprising an additional anionic detergent of the detergent active material present. 18. The detergent composition according to claim 17, wherein the content of the additional anionic detergent is such that the weight ratio of the total anionic detergent to the second detergent (A2) is maintained within the range of 10: 1 to 1: 2.