KR101991289B1 - Liquid skin cleansing and liquid skin cleansing products - Google Patents

Abstract

[PROBLEMS] To provide a liquid skin cleansing liquid and a liquid skin cleansing product having smoothness of skin and thickness of foam after use and discharging property from a container having a dispenser even at a low temperature.
[MEANS FOR SOLVING PROBLEMS] A liquid skin cleansing composition comprising a fatty acid soap, a cationized polygalactomannan, and a polyethylene glycol, wherein the neutralization ratio of the fatty acid soap is 90 mol% or more and 99 mol% or less and the liquid skin cleansing of the cationized polygalactomannan And a weight average molecular weight (Mw) of polyethylene glycol of not less than 2,000,000.

Description

Liquid skin cleansing and liquid skin cleansing products

The present invention relates to a liquid skin cleanser and a liquid skin cleansing product.

In recent years, as a skin cleansing agent, it has been preferred that the foam is fine and dense due to its smoothness and moist feeling after cleansing and comfort when the foam touches the skin. Various studies are underway to meet these needs. It is well known to use cationic polymers to improve the smoothness and moist feel of the skin after use. It is also known to use non-ionic polymers such as polyethylene glycol in order to concentrate the bubbles.

For example, Patent Document 1 discloses that a cleansing composition having a conditioning action is obtained by using a cationic polymer in combination with a specific anionic surfactant. Patent Document 2 discloses that a paste-type cleaning agent having a fine foam and a good spreadability can be obtained by using a non-neutralized fatty acid soap, a cationic polymer, and a polyethylene glycol having a specific molecular weight. Patent Document 3 discloses that a composition excellent in skin protection can be obtained by using a cationic polymer having specific cation substitution and molecular weight.

Japanese Patent No. 4965452 Japanese Patent No. 5555003 Japanese Patent No. 5436778

It is known that, when cationic polygalactomannan is added as a cationic polymer to improve skin smoothness after use, the content viscosity of the composition increases. There is a problem that the liquid cleaning material can not be discharged from the discharge port of the container to which the dispenser is attached if the viscosity of the liquid medium rises excessively. In addition, the cleansing composition containing a non-neutralized fatty acid soap tends to have an increased viscosity in winter due to excess fatty acids. On the other hand, if polyethylene glycol is put too much in order to thicken the foam, the smoothness of the skin tends to be damaged after use, and there is a problem that thread dragging occurs from the discharge port of the container. In the liquid skin cleansing composition, the prescription described in the above patent document is not enough to satisfy both the density of the foam and the smoothness of the skin after use and the discharging property from the container with the dispenser at low temperature. The liquid referred to herein has fluidity at room temperature, and the measured value by the B-type viscometer is 50,000 mPa 占 퐏 or less.

An object of the present invention is to provide a liquid skin cleansing liquid and a liquid skin cleansing product having smoothness of the skin and thickness of foam after use and good discharging property from the dispenser even at a low temperature .

The liquid skin cleansing composition of the present invention is a liquid skin cleansing composition containing fatty acid soap, cationized polygalactomannan, and polyethylene glycol,

The neutralization ratio of the fatty acid soap is 90 mol% or more and 99 mol% or less,

The content ratio of the cationized polygalactomanan to the total amount of the liquid skin cleansing agent is not less than 0.05% by mass,

The weight average molecular weight (Mw) of the polyethylene glycol is 2,000,000 or more.

The content ratio of polyethylene glycol to the total amount of the liquid skin cleansing agent is preferably 0.01 mass% or more and 0.1 mass% or less.

It may also contain a cationized polymer other than the cationized polygalactomannan.

The N content of the cationized polygalactomannan is preferably 0.2% or more and 3.0% or less.

The liquid skin cleansing composition of the present invention may further contain a divalent alcohol.

The mass of the dihydric alcohol, which is the mass ratio of the dihydric alcohol to the cationized polygalactomannan / the mass of the cationized polygalactomannan, is preferably 20 or more.

The liquid skin cleansing product of the present invention is filled with the liquid skin cleansing agent of the present invention.

(Effects of the Invention)

The liquid skin cleansing composition of the present invention is a liquid skin cleansing composition containing fatty acid soap, cationized polygalactomannan, and polyethylene glycol, wherein the neutralization ratio of the fatty acid soap is 90 mol% or more and 99 mol% or less and the cationized polygalactomannan (Mw) of polyethylene glycol is not less than 2,000,000, the content of the liquid skin cleansing agent is not less than 0.05% by mass and the polyethylene glycol has a weight-average molecular weight (Mw) of not less than 2,000,000. .

Hereinafter, the liquid skin cleansing agent of the present invention will be described in detail.

The liquid skin cleansing composition of the present invention is a liquid skin cleansing composition containing a fatty acid soap, cationized polygalactomannan, and polyethylene glycol, wherein the neutralization ratio of the fatty acid soap is 90 mol% to 99 mol%, the cationized polygalactomannan Of the total amount of the liquid skin cleansing agent is 0.05 mass% or more, and the weight average molecular weight (Mw) of the polyethylene glycol is 2,000,000 or more.

Hereinafter, each component will be described in detail.

(Fatty acid soap)

The fatty acid soap used in the present invention is a fatty acid salt obtained by neutralizing a fatty acid and an alkali. Examples of the fatty acid constituting the fatty acid salt include capric, lauric, myristic, palmitic, stearic, isostearic, oleic, linolic, arachic, do.

As the alkali, potassium hydroxide can be exemplified.

The neutralization ratio of the fatty acid soap is 90 mol% or more and 99 mol% or less, preferably 93 mol% or more and 96 mol% or less. By setting the neutralization ratio to 90 mol% or more, even if the viscosity increases at a low temperature of, for example, 5 캜, it can be discharged from the dispenser. When the content is 99 mol% or less, skin smoothness can be obtained after use.

Here, the neutralization rate of the fatty acid soap is a value obtained by dividing the neutralized fatty acid amount (mol) by the total fatty acid amount (mol).

The content ratio of the fatty acid soap to the total amount of the liquid skin cleansing agent is preferably 5 mass% or more and 30 mass% or less, more preferably 10 mass% or more and 25 mass% or less, from the viewpoint of securing the washing power and foaming, And more preferably not less than 25% by mass.

(Cationized polygalactomannan)

The cationized polygalactomannan is obtained by cationizing a water-soluble polymer having a main chain of mannose and a side chain of galactose. The ratio of galactose to mannose is 1: 2, cationized guar gum is 1: 3, cationized tara gum, and 1: 4 is cationized locust bean gum. In the present invention, any ratio may be used.

The cationized polygalactomannan is obtained by reacting galactomannan with a cationizing agent. As the cationizing agent, a tertiary amino compound or a quaternary ammonium compound containing a group capable of reacting with a reactive hydrogen ion present in galactomannan can be used. For example, 2-dialkylaminoethyl chloride and quaternary ammonium compounds such as 3-chloro-2-hydroxypropyltrimethylammonium chloride and 2,3-epoxypropyltrimethylammonium chloride are exemplified. Preferred examples thereof include glycidyltrialkylammonium salts and 3-halo-2-hydroxypropyltrialkylammonium salts such as glycidyltrimethylammonium chloride, glycidyltriethylammonium chloride, glycidyltripropylammonium chloride, glycidyltrimethylammonium chloride, Cydylethyldimethylammonium chloride, glycidyldiethylmethylammonium chloride, and the corresponding bromides and iodides; Chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, Ethyldimethylammonium chloride, and corresponding bromides and iodides thereof; And halides of compounds containing quaternary ammonium compounds, such as imidazoline rings.

The cationized polygalactomannan may be used alone or in combination of two or more.

(N content: 1.0 to 1.5%), LABORGUM CG-M (N content: 1.7 to 2.3%), LABORGUM CG-M6L manufactured by DSP GOKYO FOOD & CHEMICAL Co., M8M (N content: 2.2 to 2.8%) and Catinal CG-100S (N content: 1.0 to 1.7%) manufactured by TOHO Chemical Industry Co., Ltd. can be exemplified.

The N content of the cationized polygalactomannan is preferably 0.2% or more and 3.0% or less, more preferably 0.5% or more and 2.5% or less.

Here, the N content is determined by the ratio (% by weight) of the nitrogen atoms contained in the component.

The molecular weight of the cationized polygalactomannan used in the liquid skin cleansing material of the present invention is preferably from 10,000 to 10,000,000, more preferably from 30,000 to 10,000,000, from the viewpoint of dischargeability from a pump or a container to which the dispenser is attached, More preferably not less than 3,000,000, and still more preferably not less than 100,000 and not more than 2,000,000.

The content ratio of the cationized polygalactomannan to the total amount of the liquid skin cleansing agent is 0.05% by mass or more. The upper limit is preferably 1.0% by mass or less, more preferably 0.1% by mass or more and 0.5% by mass or less from the viewpoint of dischargeability from a pump or a container or the like with a dispenser and from the viewpoint of preventing threading.

(Polyethylene glycol)

The weight average molecular weight (Mw) of the polyethylene glycol used in the present invention is 2,000,000 or less. The upper limit is preferably 8,000,000 or less. Further, it is preferably more than 3,000,000 and not more than 7,000,000.

The content ratio of the polyethylene glycol to the total amount of the liquid skin cleansing agent is preferably 0.01 mass% or more and 0.20 mass% or less, more preferably 0.01 mass% or more and 0.10 mass% or less, more preferably 0.02 mass% or more and 0.05 mass% or less More preferable. When it is 0.01% by mass or more, the foam can be made thick. When the content is less than 0.20% by mass, it is possible to prevent foaming from occurring and decrease the volume of the foam.

Here, the weight average molecular weight (Mw) of the polyethylene glycol is determined by the column analysis.

ALKOX E-300 (weight average molecular weight: about 7,000,000), ALKOX E-240 (weight average molecular weight about 5,000,000), ALKOX E-160 (weight average molecular weight about 4,000,000), ALKOX E- POLYOX WSR 301 (weight average molecular weight: about 4,000,000), POLYOX WSR N60K CG (weight average molecular weight: about 2,000,000), ALKOX E-75 (weight average molecular weight: about 2,000,000) PEO-18P (weight average molecular weight of about 4,800,000), PEO-15P (weight average molecular weight of about 4,000,000), and PEO-18P (weight average molecular weight of about 5,000,000) manufactured by Sumitomo Seika Chemicals Company, PEO-8P (weight average molecular weight: about 2,000,000) and the like.

(A cationic polymer other than the cationized polygalactomannan)

Examples of the cationic polymer include cationized cellulose, cationized starch, diallyldialkyl quaternary ammonium salt / acrylamide copolymer, diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer, and the like. Among these, cationic cellulose and diallyldialkyl quaternary ammonium salt / acrylamide copolymer are preferable, and diallyldialkyl quaternary ammonium salt / acrylamide copolymer is more preferable.

MERQUAT 550 (weight average molecular weight: 160,000, cation charge density: 4.22 meq / g), MERQUAT 2200 (weight average molecular weight: 90,000, cationic charge density: 4.22) as the diallyldialkyl quaternary ammonium salt / acrylamide copolymer, (the copolymer of acrylamide and diallyldimethylammonium salt), POIZ C-60H (weight average molecular weight: 260,000, cationic charge density: 4.22 meq / g) (Cationic charge density: 0.93 to 1.21 meq / g), POIZ C-150L (weight average molecular weight: 1,500,000, cationic charge density: 1.07 to 1.78meq / g), KACHISERO M- Charge density: 0.71 to 1.07meq / g) [the foregoing, Kao Corporation, cationized cellulose (O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride] is exemplified.

(Divalent alcohol)

The liquid skin cleansing composition of the present invention may further contain a divalent alcohol. Examples of dihydric alcohols include propylene glycol, dipropylene glycol, butylene glycol, and isoprene glycol. Divalent alcohols have a role as humectants.

The content ratio of the dihydric alcohol to the total amount of the liquid skin cleansing agent is preferably 1 or more and 15 or less, more preferably 4 or more and 10 or less.

The mass of the dihydric alcohol, which is the mass ratio of the dihydric alcohol to the cationized polygalactomannan / mass of the cationized polygalactomannan, is preferably 16 or more, more preferably 20 or more from the viewpoint of improving the discharging property from the dispenser desirable. The upper limit is preferably 30 or less from the viewpoint of improving bubble generation. Also, the preferable range is 22 or more and 28 or less.

(Other components)

The liquid skin cleansing composition of the present invention may contain other components insofar as the effect of the present invention is not impaired. Examples of the other components include anionic surfactants, nonionic surfactants, amphoteric surfactants, thickeners, polyhydric alcohols, chelating agents, moisturizing agents, aqueous carriers, pH adjusting agents and perfumes.

Examples of the anionic surfactant include ammonium laurylsulfate, ammonium laureth sulfate, triethylamine laurylsulfate, triethylamine laureth sulfate, triethanolamine laurylsulfate, triethanolamine laurylsulfate, triethanolamine laurylsulfate, Sulfuric acid monoethanolamine, laurylsulfate diethanolamine, laureth sulfate sulfuric acid diethanolamine, sodium lauryl monoglyceride sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium lauryl sulfate, potassium laureth sulfate, lauryl sarcosinate Sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate , Triethanolamine laurylsulfate, triethanolamine laurylsulfate, monoethanolamine cocoyl sulfate, laurylsulfate monoethanolamine , And combinations thereof.

Also included are the reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide (e.g. fatty acids derived from cocoyl or palm kernel oil), and sodium or potassium salts of fatty acid amides of methyl tauride For example, the fatty acid is derived from coconut oil or palm kernel oil).

Nonionic surfactants are generally defined as compounds comprising hydrophobic and nonionic hydrophilic components. Examples of hydrophobic moieties are alkyl, alkylaromatic, dialkylsiloxane, polyoxyalkylene, and alkyl substituted with fluoro. Examples of hydrophilic components are polyoxyalkylene, phosphine oxides, sulfoxides, amine oxides, and amides. Other examples of nonionic surfactants include alkyl polysaccharides, for example, alkyl polysaccharides.

As the amphoteric surfactant, amine oxide, sulfobetaine, and carbobetaine can be exemplified.

Examples of the thickening agent include NaCl, NH ₄ Cl, KCl, Na ₂ SO ₄ , aliphatic alcohol, fatty acid ester, fatty acid amide, aliphatic alcohol polyethylene glycol ether, sorbitol polyethylene glycol ether, cocamide monoethanolamide (cocamide MEA) Cocamide diethanolamide, cocamidopropyl betaine, clay, silica, cellulose-based polymer, and xanthan gum.

As polyhydric alcohols, glycerin, sorbitol, xylitol, maltitol and the like can be mentioned.

As the chelating agent, for example, ethane-1-hydroxy-1,1-diphosphonic acid, ethylenediaminetetraacetic acid, methylglycine diacetic acid, hydroxyethyl iminodiacetic acid, ethylenediamine disuccinic acid, N-diacetic acid, N-2-hydroxyethyliminodiacetic acid, citric acid, succinic acid and salts thereof.

As the aqueous carrier, purified water and lower alcohols having 2 to 6 carbon atoms can be exemplified. It is preferably purified water. The aqueous carrier is preferably contained in an amount of 30% by mass or more and 70% by mass or less based on the total amount of the liquid skin cleansing agent.

The liquid skin cleansing material of the present invention can be said to be a liquid skin cleansing product filled in, for example, a container having a one-touch stopper or a liquid dispenser.

Example

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. In the following Examples and the like, the amount thereof is expressed by mass% unless otherwise specified.

[Examples 1 to 17, Comparative Examples 1 to 8]

Liquid skin cleansing materials having the ingredients described in Tables 1 to 4 below were prepared by a conventional method, and the dischargeability from the liquid dispenser, the smoothness of the skin after use, and the density of the foam were evaluated.

<Discharging Property from Liquid Dispenser at Low Temperature (5 占 폚)

Dischargeability of the liquid skin cleansing material from the liquid dispenser at low temperature (5 캜) was evaluated based on the following evaluation criteria.

A sample placed in a container with a liquid dispenser was stored in a thermostatic chamber at 5 DEG C for 24 hours, and the operability of the dispenser immediately after withdrawal was evaluated as follows. The dispenser used was P-308 from YOSHINO KOGYOSHO CO., LTD., Which is generally used for liquid cleaning.

(Evaluation standard)

A: Sample can be easily discharged.

B: You can feel the weight of the dispenser, or the dispenser returns slowly (less than 10 seconds) after dispensing.

C: The dispenser can not be dispensed, or the dispenser after dispensing does not return for more than 10 seconds.

<Smoothness of skin after use, boldness of foam>

After each of the five expert panels was allowed to use each sample as a normal use method, the following items were questioned and an average rating was given based on the results.

Smoothness of skin after use: The skin after washing is smooth.

Boldness of bubble: There is resilience in bubble.

1: I do not think so at all.

2: I do not think so.

4: I think so.

5: I think so.

(Evaluation standard)

Based on the above average rating, evaluation was made as follows.

AA: Average rating ≥4.5

A: 4.5> Average rating> 3.5

B: 2.5? Average rating? 3.5

C: Average rating <2.5

The evaluation results are shown in Tables 1 to 4 together with the combination of materials.

Details of the materials in Tables 1 to 4 are as follows.

(Polygalactomannan)

(Low N content): LABORGUM CG-M6L (DSP GOKYO FOOD & CHEMICAL Co., Ltd.)

(Content of N in N): LABORGUM CG-M (DSP GOKYO FOOD & CHEMICAL Co., Ltd.)

-Ga-hydroxypropyltrimonium chloride (high N content): LABORGUM CG-M8M (DSP GOKYO FOOD & CHEMICAL Co., Ltd.)

· Guar gum (non-ionic): Meyprogat 90-S (Sansho Co., Ltd.)

(Polyethylene glycol)

Weight average molecular weight (about 7,000,000): ALKOX E-300 (manufactured by Meisei Chemical Works, Ltd.)

Weight average molecular weight (about 5,000,000): ALKOX E-240 (manufactured by Meisei Chemical Works, Ltd.)

Weight average molecular weight (about 4,000,000): ALKOX E-160 (manufactured by Meisei Chemical Works, Ltd.)

Weight average molecular weight (about 3,000,000): ALKOX E-100 (manufactured by Meisei Chemical Works, Ltd.)

Weight average molecular weight (about 2,000,000): ALKOX E-75 (manufactured by Meisei Chemical Works, Ltd.)

Weight average molecular weight (about 220,000): POLYOX WSR N80 (The Dow Chemical Company)

As can be seen from Table 1, in Examples 1 to 3 in which the N content of the cationized polygalactomannan was 1.0 to 2.8%, the pump discharging property at a low temperature was good and the smoothness of the skin after use and the density of the foam were good did. Particularly, in Examples 2 and 3 in which the N content was 1.0 to 2.3%, good results were obtained in all evaluations.

On the other hand, Comparative Example 1 using nonionic guar gum and Comparative Example 2 using no cationized polygalactomannan showed poor skin smoothness after use. In addition, Comparative Example 3, which did not contain both cationized polygalactomannan and polyethylene glycol, had poorer skin smoothness and thicker foam after use than the examples.

As can be seen from Table 2, Comparative Example 4 using a polyethylene glycol having a molecular weight of 220,000 and Comparative Example 5 using no polyethylene glycol had poor bubble density compared to Examples 4 to 7 using a polyethylene glycol having a molecular weight of 2,000,000 or more .

As can be seen from Table 3, Comparative Example 6 in which the content ratio of the cationized polygalactomannan to the total amount of the liquid skin cleansing agent was less than 0.05% by mass was worse than that in Examples in terms of skin smoothness after use.

As can be seen from Table 4, Comparative Example 7 in which the neutralization ratio of the fatty acid soap was as low as 87 mol% had poor discharging property from the dispenser. On the other hand, Comparative Example 8, which was too high at a neutralization ratio of 102 mol%, was poor in skin smoothness and bubble density after use.

(Prescription Example)

Hereinafter, a prescription example of the liquid skin cleansing agent of the present invention will be exemplified. But the present invention is not limited to this example at all. In addition, the blending amounts are all expressed as% by mass with respect to the total amount of the product.

Prescription Example 1: The neutralization ratio of the fatty acid soap is 93 mol%.

Palm oil fatty acid 5.0

Lauric acid 6.0

Myristic acid 5.0

Palmitoic acid 5.0

Propylene glycol 7.0

Ethylene glycol distearate 1.5

Guar-hydroxypropyltrimonium chloride 0.2

 (LABOR SURGER CG-M6L, DSP GOKYO FOOD & CHEMICAL Co., Ltd.)

Polyethylene glycol 0.03

 (ALKOX E-240, manufactured by Meisei Chemical Works, Ltd.)

Laureth sulfate Na (30% aqueous solution) 7.5

Cocamidopropyl betaine (30% aqueous solution) 5.0

Cocamid MEA 0.1

Citron extract 0.001

POLYQUATERNIUM-7 1.0

 (MERQUAT 550, manufactured by The Lubrizol Corporation)

POLYQUATERNIUM-39 1.0

 (MERQUAT 3330, manufactured by The Lubrizol Corporation)

Potassium hydroxide suitable amount

Chelating agent suitable amount

Fragrance appropriate amount

Purified water balance

The discharging property from the liquid dispenser of Formulation Example 1, the smoothness of the skin after use, and the density of the foam were all A evaluations.

Prescription Example 2: The neutralization ratio of fatty acid soap is 95 mol%.

Palm oil fatty acid 5.0

Lauric acid 7.0

Myristic acid 6.0

Palmitoic acid 5.0

Propylene glycol 8.0

Ethylene glycol distearate 2.0

Gua-hydroxypropyltrimonium chloride 0.3

 (Catinal CG-100S, manufactured by TOHO Chemical Industry Co., Ltd.)

Polyethylene glycol 0.05

 (POLYOX WSR 301, manufactured by The Dow Chemical Company)

Laureth Sulfate Na (30% aqueous solution) 6.5

Cocamidopropyl betaine (30% aqueous solution) 6.5

Cocamid MEA 0.2

POLYQUATERNIUM-7 1.5

(MERQUAT 550, manufactured by The Lubrizol Corporation)

POLYQUATERNIUM-51 0.01

Sodium hyaluronate 0.001

Hydroxypropylmethylcellulose 0.05

Potassium hydroxide suitable amount

Chelating agent suitable amount

Fragrance appropriate amount

Purified water balance

The dischargeability from the liquid dispenser of Formulation Example 2, the smoothness of the skin after use, and the density of the bubbles were all A evaluations.

Claims (7)

A liquid skin cleansing composition comprising fatty acid soap, cationized polygalactomannan, polyethylene glycol, and divalent alcohol,
The neutralization ratio of the fatty acid soap is 90 mol% or more and 99 mol% or less,
The content ratio of the cationized polygalactomannan to the total amount of the liquid skin cleansing agent is 0.05% by mass or more,
Wherein the polyethylene glycol has a weight average molecular weight (Mw) of 2,000,000 or more,
The cationized polygalactomannan is obtained by cationizing a water-soluble polymer having a main chain of mannose and a side chain of galactose, and is cationized guar gum, cationized tara gum, or cationized locust bean gum,
Wherein the dihydric alcohol is propylene glycol, dipropylene glycol, butylene glycol, or isoprene glycol,
Wherein the mass ratio of the dihydric alcohol to the cationized polygalactomannan (mass of dihydric alcohol / mass of cationized polygalactomannan) is 20 or more. The method according to claim 1,
Further comprising a cationic polymer other than the cationized polygalactomannan. 3. The method according to claim 1 or 2,
Wherein the N content of the cationized polygalactomannan is not less than 0.2% and not more than 3.0%. A liquid skin cleansing product comprising the container filled with the liquid skin cleansing composition according to any one of claims 1 to 3. A liquid skin cleansing product in which the liquid skin cleansing agent according to claim 3 is filled in a container. delete delete