CN109069392B - Liquid skin cleanser and liquid skin cleansing product - Google Patents

Liquid skin cleanser and liquid skin cleansing product Download PDF

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Publication number
CN109069392B
CN109069392B CN201780023756.XA CN201780023756A CN109069392B CN 109069392 B CN109069392 B CN 109069392B CN 201780023756 A CN201780023756 A CN 201780023756A CN 109069392 B CN109069392 B CN 109069392B
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liquid skin
cationized
mass
fatty acid
polygalactomannan
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CN109069392A (en
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铃木牧人
福原隆志
大村孝之
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Shiseido Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/737—Galactomannans, e.g. guar; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/86—Polyethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/08—Liquid soap, e.g. for dispensers; capsuled
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers

Abstract

The invention provides a liquid skin cleanser and a liquid skin cleansing product which have smooth skin after use and dense foam and are excellent in the discharge property from a container with a dispenser even at low temperature. The liquid skin cleansing agent contains a fatty acid soap, a cationized polygalactomannan, and polyethylene glycol, wherein the neutralization rate 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 mass% or more, and the weight average molecular weight Mw of the polyethylene glycol is 200 ten thousand or more.

Description

Liquid skin cleanser and liquid skin cleansing product
Technical Field
The present invention relates to liquid skin cleansers and liquid skin cleansing articles.
Background
In recent years, as a skin cleanser, a skin cleanser which gives a smooth and moist feeling to the skin after cleansing and gives a fine and dense foam in consideration of a good feeling when the foam is in contact with the skin has been desired. In order to meet such a demand, various studies have been made. It is known to use a cationized polymer to improve the smoothness and moisturized feel of the skin after use. In addition, it is known to use a nonionic polymer such as polyethylene glycol in order to thicken the foam.
For example, patent document 1 describes that a cleansing composition having a conditioning action can be obtained by using a cationic polymer in combination with a specific anionic surfactant. Patent document 2 describes that a paste-like cleansing agent having fine and well-extended foam can be obtained by using an unneutralized fatty acid soap, a cationic polymer, polyethylene glycol having a specific molecular weight, and the like. Further, patent document 3 describes that a composition excellent in skin protection can be obtained by using a cationic polymer having a specific cationic substitution degree and molecular weight.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 4965452
Patent document 2: japanese patent No. 5555003
Patent document 3: japanese patent No. 5436778
Disclosure of Invention
Problems to be solved by the invention
It is known that if a cationic polygalactomannan is contained as a cationic polymer to improve the smoothness of the skin after use, the viscosity of the contents of the composition increases. There is a problem in that the liquid detergent cannot be discharged from the discharge port of the container with the dispenser (dispenser) if the viscosity of the contents excessively rises. In addition, cleansing compositions containing unneutralized fatty acid soaps tend to increase in viscosity during winter due to excess fatty acid. On the other hand, if polyethylene glycol is excessively added to thicken the foam, the skin tends to be damaged after use, and there is a problem that stringing occurs from the outlet of the container. The liquid skin cleansing agent described in the above patent documents is insufficient in order to achieve both thickening of the foam and smoothness of the skin after use, and discharge from a container with a dispenser at low temperature. The liquid herein has fluidity at room temperature, and the measurement value measured by a B-type viscometer is 50000 mPas or less.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a liquid skin cleansing agent and a liquid skin cleansing product which have smoothness of the skin and thickening of foam after use and which are excellent in the discharge property from a dispenser even at low temperatures.
Means for solving the problems
The liquid skin cleanser of the present invention is a liquid skin cleanser containing fatty acid soap, cationized polygalactomannan, and polyethylene glycol,
the neutralization rate 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 cleanser is 0.05% by mass or more,
the polyethylene glycol has a weight average molecular weight Mw of 200 ten thousand or more.
The content ratio of the polyethylene glycol to the total amount of the liquid skin cleansing agent is preferably 0.01 to 0.1 mass%.
May further comprise a cationized polymer other than the cationized polygalactomannan.
The N content of the cationized polygalactomannan is preferably 0.2% to 3.0%.
The liquid skin cleanser of the present invention may further contain a glycol.
The mass ratio of the diol to the cationized polygalactomannan, i.e. the mass of the diol/the mass of the cationized polygalactomannan, is preferably 20 or more.
The liquid skin cleansing product of the present invention is obtained by filling a container with the liquid skin cleansing agent of the present invention.
ADVANTAGEOUS EFFECTS OF INVENTION
The liquid skin cleanser of the present invention is a liquid skin cleanser containing a fatty acid soap, a cationized polygalactomannan, and polyethylene glycol, wherein the neutralization rate 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 cleanser is 0.05 mass% or more, and the weight average molecular weight Mw of the polyethylene glycol is 200 ten thousand or more.
Detailed Description
Hereinafter, the liquid skin cleanser of the present invention will be described in detail.
The liquid skin cleanser of the present invention is a liquid skin cleanser containing a fatty acid soap, a cationized polygalactomannan, and polyethylene glycol, wherein the neutralization rate 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 cleanser is 0.05 mass% or more, and the weight average molecular weight Mw of the polyethylene glycol is 200 ten thousand 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 with an alkali. Examples of the fatty acid constituting the fatty acid salt include capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, arachidic acid, behenic acid, lignoceric acid, and coconut oil fatty acid.
Further, as the base, potassium hydroxide may be mentioned.
The neutralization rate of the fatty acid soap is 90 mol% or more and 99 mol% or less, and preferably 93 mol% or more and 96 mol% or less. By setting the neutralization degree to 90 mol% or more, the viscosity can be increased even at a low temperature of, for example, 5 ℃ and the like, and the product can be discharged from the dispenser. Further, the content of 99% by mol or less provides smoothness to the skin after use.
Here, the neutralization ratio of the fatty acid soap is a value obtained by dividing the amount (mol) of the neutralized fatty acid by the total amount (mol) of the fatty acid.
From the viewpoint of ensuring detergency and foaming, the content ratio of the fatty acid soap to the total amount of the liquid skin cleanser is preferably 5 mass% or more and 30 mass% or less, more preferably 10 mass% or more and 25 mass% or less, and further preferably 15 mass% or more and 25 mass% or less.
(cationized polygalactomannan)
The cationized polygalactomannan is obtained by cationizing a water-soluble polymer having a main chain composed of mannose and a side chain composed of galactose. The ratio of galactose to mannose was 1: 2 called cationized guar gum, the ratio of galactose to mannose is 1: 3, the cationized polygalactomannan is called cationized tara gum, and the ratio of galactose to mannose is 1: the cationized polygalactomannan of 4 is called cationized locust bean gum. Any ratio of cationized polygalactomannan can be used in the present invention.
The cationized polygalactomannan is obtained by reacting galactomannan with a cationizing agent. The cationizing agent may use a tertiary amino compound or a quaternary ammonium compound containing a group that can react with the reactive hydrogen ions present in the galactomannan. For example, 2-dialkylaminoethyl chloride, and quaternary ammonium compounds such as 3-chloro-2-hydroxypropyltrimethylammonium chloride, and 2, 3-epoxy-propyltrimethylammonium chloride may be mentioned. Preferable examples thereof include glycidyl trialkylammonium salts and 3-halo-2-hydroxypropyl trialkylammonium salts, such as glycidyl trimethylammonium chloride, glycidyl triethylammonium chloride, glycidyl tripropylammonium chloride, glycidyl ethyldimethylammonium chloride, glycidyl diethylmethylammonium chloride, and bromides and iodides corresponding thereto; 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltriethylammonium chloride, 3-chloro-2-hydroxypropyltripropylammonium chloride, 3-chloro-2-hydroxypropylethyldimethylammonium chloride, and bromides and iodides corresponding thereto; and quaternary ammonium compounds such as halides of compounds containing imidazoline rings.
The cationized polygalactomannan may be used alone or in combination of two or more.
Examples of commercially available products include ラボールガム CG-M6L (N content: 1.0 to 1.5%), ラボールガム CG-M (N content: 1.7 to 2.3%), ラボールガム CG-M8M (N content: 2.2 to 2.8%), and カチナール CG-100S (N content: 1.0 to 1.7%) manufactured by Nippon chemical industries, Ltd.
The N content of the cationized polygalactomannan is preferably 0.2% to 3.0%, more preferably 0.5% to 2.5%.
Here, the N content is a value obtained from the proportion (wt%) of nitrogen atoms contained in the component.
The molecular weight of the cationized polygalactomannan used in the liquid skin cleansing agent of the present invention is preferably 1 to 1000 ten thousand, more preferably 3 to 300 ten thousand, and still more preferably 10 to 200 ten thousand, from the viewpoint of the discharge from a container with a pump or a dispenser, and the viewpoint of preventing stringiness.
The content ratio of the cationized polygalactomannan to the total amount of the liquid skin cleanser is 0.05% by mass or more. From the viewpoint of discharge from a container with a pump or a dispenser, etc. and the viewpoint of prevention of stringing, the upper limit is preferably 1.0 mass% or less, and more preferably 0.1 mass% or more and 0.5 mass% or less.
(polyethylene glycol)
The polyethylene glycol used in the present invention has a weight average molecular weight Mw of 200 ten thousand or more. The upper limit is preferably 800 ten thousand or less. More preferably, it is more than 300 ten thousand and 700 ten thousand or less.
The content ratio of polyethylene glycol to the total amount of the liquid skin cleansing agent is preferably 0.01 to 0.20 mass%, more preferably 0.01 to 0.10 mass%, and still more preferably 0.02 to 0.05 mass%. When the amount is 0.01% by mass or more, the foam can be thickened. Further, by setting the amount to 0.20% by mass or less, the foaming deterioration and the volume reduction of the foam can be prevented.
Here, the weight average molecular weight Mw of polyethylene glycol is a value determined by column analysis.
Examples of commercially available products include アルコックス E-300 (weight-average molecular weight: about 700 million), アルコックス E-240 (weight-average molecular weight: about 500 million), アルコックス E-160 (weight-average molecular weight: about 400 million), アルコックス E-100 (weight-average molecular weight: about 300 million), アルコックス E-75 (weight-average molecular weight: about 200 million), ポリオックス WSR 301 (weight-average molecular weight: about 400 million), ポリオックス RN60K CG (weight-average molecular weight: about 200 million), ポリオックス N80 (weight-average molecular weight: 22 million), PEO-27P (weight-average molecular weight: about 720 million), PEO-18P (weight-average molecular weight: about 480 million), PEO-15P (weight-average molecular weight: about 400 million), manufactured by Kaishiki chemical industries, Ltd, PEO-8P (weight average molecular weight about 200 ten thousand), and the like.
(cationic polymers other than cationic polygalactomannan)
Examples of the cationized polymer include cationized cellulose, cationized starch, diallyl dialkyl quaternary ammonium salt/acrylamide copolymer, diallyl dialkyl quaternary ammonium salt/acrylamide/acrylic acid copolymer, and the like. Among these, cationized cellulose and a diallyl dialkyl quaternary ammonium salt/acrylamide copolymer are preferable, and a diallyl dialkyl quaternary ammonium salt/acrylamide copolymer is more preferable.
Examples of the diallyldialkylammonium salt/acrylamide copolymer include マーコート 550 (weight average molecular weight: 16 ten thousand, cationic charge density: 4.22meq/g), マーコート 2200 (weight average molecular weight: 9 ten thousand, cationic charge density: 4.22meq/g), マーコート S (weight average molecular weight: 26 ten thousand, cationic charge density: 4.22meq/g) or more, Japanese ルーブリゾール Co., Ltd., a copolymer of acrylamide and diallyldimethylammonium salt ], ポイズ C-60H (weight average molecular weight: 60 ten thousand, cationic charge density: 1.07 to 1.78meq/g), カチセロ M-80 (weight average molecular weight: 80 ten thousand, cationic charge density: 0.93 to 1.21meq/g), ポイズ C-150L (weight average molecular weight: 150 ten thousand, cationic charge density: 0.71 to 1.07meq/g) or more, kao corporation, cationized cellulose (O- [ 2-hydroxy-3- (trimethylammonium) propyl ] hydroxyethylcellulose chloride) ].
(dihydric alcohol)
The liquid skin cleanser of the present invention may further contain a glycol. The dihydric alcohol includes propylene glycol, dipropylene glycol, butylene glycol, isoprene glycol, and the like. The dihydric alcohol has humectant effect.
The content ratio of the glycol to the total amount of the liquid skin cleansing agent is preferably 1 to 15, more preferably 4 to 10.
From the viewpoint of improving the discharge from the dispenser, the mass ratio of the glycol to the cationized polygalactomannan, that is, the mass of the glycol/the mass of the cationized polygalactomannan is preferably 16 or more, and more preferably 20 or more. From the viewpoint of satisfactory foaming, the upper limit is preferably 30 or less. A more preferable range is 22 to 28 inclusive.
(other Components)
The liquid skin cleansing agent of the present invention may contain other components within a range not impairing the effects of the present invention. Examples of the other components include anionic surfactants, nonionic surfactants, amphoteric surfactants, thickeners, polyhydric alcohols, chelating agents, humectants, aqueous carriers, pH adjusters, and perfumes.
Examples of the anionic surfactant include ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, sodium lauryl monoglyceride sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium lauryl sulfate, potassium laureth sulfate, sodium 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 lauryl sulfate, and the like, Triethanolamine lauryl sulfate, monoethanolamine cocoyl sulfate, monoethanolamine lauryl sulfate, and combinations thereof.
Further, there may be mentioned a reaction product of fatty acid esterified with isethionic acid and neutralized with sodium hydroxide (for example, fatty acid derived from coconut oil or palm kernel oil), and a sodium or potassium salt of fatty acid amide of methyl tauride (for example, fatty acid derived from coconut oil or palm kernel oil).
Nonionic surfactants are generally defined as compounds comprising a hydrophobic component, and a nonionic hydrophilic component. Examples of the hydrophobic component include an alkyl group, an alkyl aromatic group, a dialkyl siloxane, a polyoxyalkylene, and an alkyl group substituted with fluorine. Examples of hydrophilic components are polyalkylene oxides, phosphine oxides, sulfoxides, amine oxides, and amides. Other examples of the nonionic surfactant include alkyl polysaccharides, for example, alkyl polysaccharides.
Examples of the amphoteric surfactant include amine oxide, sulfobetaine, and carboxybetaine.
Examples of the thickener include NaCl and NH4Cl、KCl、Na2SO4Fatty alcohols, fatty acid esters, fatty acid amides, fatty alcohol polyglycol ethers, sorbitol polyglycol ethers, cocamide monoethanolamide (cocamide MEA), cocamide diethanolamide, cocamidopropyl betaine, clays, silica, cellulose-based polymers, and xanthan gum.
Examples of the polyhydric alcohol include glycerin, sorbitol, xylitol, and maltitol.
As the chelating agent, for example, 1 or more selected from ethane-1-hydroxy-1, 1-diphosphonic acid, ethylenediamine tetraacetic acid, methylglycinediacetic acid, hydroxyethyliminodiacetic acid, ethylenediamine disuccinic acid, L-glutamic acid-N, N-diacetic acid, N-2-hydroxyethyliminodiacetic acid, citric acid, succinic acid, and salts thereof are preferable.
Examples of the aqueous carrier include purified water and a lower alcohol having 2 to 6 carbon atoms. Preferably purified water. The aqueous carrier is preferably contained in an amount of 30 to 70 mass% based on the total amount of the liquid skin cleanser.
The liquid skin cleansing agent of the present invention can be filled in a container with, for example, a one-touch cap or a liquid dispenser to prepare a liquid skin cleansing product.
Examples
The present invention will be described in further detail with reference to examples below, but the present invention is not limited to these examples. The amount of the polymer in the following examples and the like is expressed by mass% unless otherwise specified.
Examples 1 to 17 and comparative examples 1 to 8
Liquid skin cleansers having the compositions described in tables 1 to 4 below were produced by a conventional method, and the discharge from the liquid dispenser, the skin smoothness after use, and the foam density were evaluated.
< dischargeability from liquid distributor at Low temperature (5 ℃) >
The liquid skin cleanser was evaluated for its dischargeability from the liquid dispenser at low temperature (5 ℃) based on the following evaluation criteria.
The sample added to the vessel with the liquid dispenser was stored in a thermostatic bath at 5 ℃ for 24 hours, and the workability of the dispenser immediately after the removal was evaluated as follows. The dispenser used P-308, a product of Gilford corporation, which is commonly used in liquid detergents.
(evaluation criteria)
A: the sample can be easily discharged.
B: the dispenser may be discharged although it feels heavy or the recovery of the dispenser after discharge is slow (less than 10 seconds).
C: it was not discharged or the dispenser after discharge did not recover for more than 10 seconds.
< smooth skin and dense foam after use >
Each sample was used by 5 panelists in accordance with a usual usage method, followed by questionnaire survey of the following items, and an average score was obtained based on the results.
Skin smoothness after use: the skin was smooth after rinsing.
Thickening of the foam: the foam has elasticity.
1: is not considered to be so at all
2: is not considered to be so
4: it is considered that
5: is very much thought of as such
(evaluation criteria)
Based on the average score, the evaluation was performed as follows.
AA: average score is more than or equal to 4.5
A: 4.5 > mean score > 3.5
B: average score of 2.5 or more and 3.5 or less
C: mean score < 2.5
The evaluation results are shown in tables 1 to 4 together with the compounding of the materials.
[ Table 1]
Figure BDA0001828805150000101
[ Table 2]
Figure BDA0001828805150000111
[ Table 3]
Figure BDA0001828805150000121
[ Table 4]
Figure BDA0001828805150000131
The details of the materials in tables 1 to 4 are as follows.
(polygalactomannan)
Guar hydroxypropyltrimethylammonium chloride (low N content): ラボールガム CG-M6L (DSP five collaborating フード & ケミカル, manufactured by Kyowa Co., Ltd.)
Guar hydroxypropyltrimethylammonium chloride (N content): ラボールガム CG-M (DSP five collaborating フード & ケミカル, manufactured by Kyoho)
Guar hydroxypropyltrimethylammonium chloride (high N content): ラボールガム CG-M8M (five DSP collaborating フード & ケミカル Kabushiki Kaisha)
Guar gum (non-ionic): meyprogat 90-S (manufactured by Tri-crystal corporation)
(polyethylene glycol)
Weight average molecular weight (about 700 ten thousand): アルコックス E-300 (Ming Cheng chemical industry Co., Ltd.)
Weight average molecular weight (about 500 ten thousand): アルコックス E-240 (Ming Cheng chemical industry Co., Ltd.)
Weight average molecular weight (about 400 ten thousand): アルコックス E-160 (Ming Cheng chemical industry Co., Ltd.)
Weight average molecular weight (about 300 ten thousand): アルコックス E-100 (Mingcheng chemical industry Co., Ltd.)
Weight average molecular weight (about 200 ten thousand): アルコックス E-75 (Ming Cheng chemical industry Co., Ltd.)
Weight average molecular weight (about 22 ten thousand): ポリオックス WSR N80(ダウ, ケミカル made by Nippon Kabushiki Kaisha)
As is clear 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 discharge property at low temperature was good, and the skin was smooth and the foam was dense after use. In particular, 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, in comparative example 1 using nonionic guar gum and comparative example 2 not using cationic polygalactomannan, the skin was poor in smoothness after use. In addition, in comparative example 3, which does not contain any cationized polygalactomannan or polyethylene glycol, the skin smoothness and foam density after use are inferior to those of examples.
As is clear from table 2, in comparative example 4 using polyethylene glycol having a molecular weight of 22 ten thousand and comparative example 5 not using polyethylene glycol, the foam density was inferior to those of examples 4 to 7 using polyethylene glycol having a molecular weight of 200 ten thousand or more.
As is clear from Table 3, in 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, the skin smoothness after use was inferior to that of the examples.
As is clear from table 4, comparative example 7, in which the neutralization degree of the fatty acid soap was as low as 87 mol%, was inferior in the discharge property from the dispenser. On the other hand, in comparative example 8 in which the neutralization rate was too high at 102 mol%, the skin was smooth and the foam was thick after use.
(prescription example)
Examples of the formulation of the liquid skin cleanser of the present invention are shown below. The invention is not limited by this prescription example at all. The amount of the additive is represented by mass% based on the total amount of the product.
Formulation example 1: the neutralization rate of the fatty acid soap was 93 mol%.
Figure BDA0001828805150000151
Figure BDA0001828805150000161
The discharge from the liquid dispenser, the skin smoothness after use, and the foam density of formulation example 1 were all evaluated as a.
Formulation example 2: the neutralization rate of the fatty acid soap was 95 mol%.
Figure BDA0001828805150000162
Figure BDA0001828805150000171
The discharge from the liquid dispenser, the skin smoothness after use, and the foam density of formulation example 2 were all evaluated as a.

Claims (4)

1. A liquid skin cleanser comprises fatty acid soap, cationized polygalactomannan, polyethylene glycol, and glycol,
the neutralization rate 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,
the polyethylene glycol has a weight average molecular weight Mw of 200 ten thousand or more,
the mass ratio of the diol to the cationized polygalactomannan, that is, the mass of the diol/the mass of the cationized polygalactomannan, is 20 or more,
the N content of the cationized polygalactomannan is 0.2% to 3.0%.
2. The liquid skin cleanser of claim 1, further comprising a cationized polymer other than the cationized polygalactomannan.
3. The liquid skin cleanser according to claim 1 or 2, wherein the N content of the cationized polygalactomannan is 1.0% or more and 2.8% or less.
4. A liquid skin cleansing product comprising a container and the liquid skin cleansing agent according to any one of claims 1 to 3 filled therein.
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