JP2013095898A - Liquid detergent composition - Google Patents

Abstract

Disclosed is a liquid detergent composition that maintains fine foam, maintains cleansing power and a moist feeling after washing, and has excellent low-temperature stability.
The component (a) is 0.5 to 20% by mass, the component (b) is 0.3 to 8% by mass, the component (c) is 0.2 to 4% by mass, and [a + b + c] is 1 to 30%. Liquid detergent composition whose mass% and [a / c] are 1/8-40/1. (A) Polyoxyethylene sorbitan monofatty acid ester having an average addition mole number of ethylene oxide of 60 to 100 mol (b) Nonionic surfactant RCOX (I) represented by the formula (I) (wherein RCO is carbon 8 to 16 acyl groups, X is a residue obtained by removing one hydrogen atom bonded to a nitrogen atom of an amine compound selected from diethanolamine and / or N-methylethanolamine, or a hydrogen atom from one hydroxyl group of a disaccharide (C) Acyl amino acid type anionic surfactant having 8 to 14 carbon atoms in the acyl group (d) Water [Selection] None

Description

  The present invention relates to a liquid detergent composition, and more particularly to a liquid detergent composition suitable for use in a former container.

  The cleansing process for makeup removal usually consists of two steps: cleansing (makeup removal) and facial cleansing. As a cleansing agent, cleansing oil and cleansing cream containing a high concentration of liquid oily components to enhance detergency. As a facial cleanser, there is an aqueous detergent that uses soap or a surfactant as a washing component, with an emphasis on the refreshing feeling after washing. Usually, the water-based cleaning agent is used to clean the face using foam obtained by whipping water and air in the palm of the hand. As a result, pump former type cleaning materials that are discharged as foam have also appeared. Pump former type cleaning materials have recently gained popularity due to the ease with which fine foam can be easily obtained even for people who are not good at foaming.

In recent years, makeup removal has been aimed at simplification, and a cleaning agent having both a cleansing function and a facial cleaning function has been developed as a pump former type cleaning agent. For example, Patent Document 1 contains a polyoxyethylene sorbitan-type nonionic surfactant, a sulfosuccinic acid-type anionic surfactant, and an amphoteric surfactant, and is a low-irritant cleansing agent with good foaming and fine foam quality. Agent compositions have been proposed. However, although the cleaning composition of Patent Document 1 has good foam quality immediately after discharge, if the cleaning is performed in the presence of makeup stains, the foam breaks and is insufficient in terms of foam persistence. there were.
In the past, various studies have been conducted outside the detergent field as attempts to improve the foam quality and the persistence of the foam. For example, Patent Document 2 proposes a foam hair dye characterized by containing a nonionic surfactant such as polyoxyethylene sorbitan fatty acid ester or fatty acid alkylolamide and ejecting with a propellant such as aerosol. Has been. However, although the foamy hair dye of patent document 2 can obtain favorable foam quality by ejecting using a propellant, it was not able to obtain favorable foam quality when filled in a pump former. . Patent Document 3 proposes a solid bubble bath composition containing a surfactant such as polyoxyethylene sorbitan fatty acid ester and N-acyl taurine salt. The cleaning composition of Patent Document 3 can provide creamy foam just by putting it in a bathtub, but when used as a cleaning agent, the cleansing power is insufficient.

Japanese Patent Laid-Open No. 2000-169884 JP 2003-261430 A JP-A-9-12443

  Accordingly, the problem to be solved by the present invention is to provide a liquid detergent composition that maintains fine foams even during washing, has a good cleansing power and a moist feeling after washing, and has excellent low-temperature stability. is there.

In order to solve the above-mentioned problems, the present inventors diligently studied, and by adopting the configuration of the present invention, fine bubbles persist even during cleaning, cleansing power and good moist feeling after cleaning, and low temperature stability In addition, the present inventors have obtained an excellent liquid detergent composition.
That is, the present invention is as follows.
A liquid detergent composition containing the following components (a), (b), (c), and (d),
The content of the component (a) with respect to the total amount of the liquid detergent composition is 0.5 to 20% by mass, the content of the component (b) is 0.3 to 8% by mass, and the content of the component (c) is 0.2. -4% by mass, the sum [a + b + c] of the contents of components (a), (b), and (c) is 1-30% by mass, and the mass ratio of components (a) and (c) [a / c] is 1/8 to 40/1, a liquid detergent composition.
(A) Polyoxyethylene sorbitan monofatty acid ester having an average addition mole number of ethylene oxide of 60 to 100 mol (b) Nonionic surfactant RCOX (I) represented by the formula (I)
(Wherein RCO is an acyl group having 8 to 16 carbon atoms, X is a residue obtained by removing one hydrogen atom bonded to the nitrogen atom of one or more amine compounds selected from diethanolamine and / or N-methylethanolamine) Or a residue obtained by removing a hydrogen atom from one hydroxyl group of a disaccharide.)
(C) an acylamino acid type anionic surfactant having an acyl group having 8 to 14 carbon atoms (d) water

  The liquid detergent composition of the present invention is particularly suitable as a detergent for a former container, and the foam discharged from the former container is fine and fine in quality. The Moreover, it is excellent in a cleansing effect, and it is possible to perform makeup removal and washing at the same time using only the liquid detergent composition of the present invention without using a separate preparation for makeup removal. Moist feeling after washing is also good, and low temperature stability is also excellent.

Hereinafter, the present invention will be described in detail.
In the following description, the components (a), (b), (c), and (d) are referred to as a component, b component, c component, and d component, respectively.
The polyoxyethylene sorbitan monofatty acid ester having an average addition mole number of ethylene oxide of 60 to 100 moles, which is component a of the present invention, is obtained by adding ethylene oxide to sorbitan fatty acid ester which is a partial ester of sorbitol or sorbitan and a fatty acid. Nonionic surfactant. Sorbitan fatty acid esters can synthesize monoesters, diesters, and triesters by changing the ratio of sorbitan and fatty acids, but sorbitan fatty acid esters used as starting materials for component a are mainly monoesters. A component (50% by mass or more) is preferable. When a sorbitan fatty acid ester whose main component is a diester or triester is used as a starting material, the foam quality may deteriorate and the low-temperature stability may deteriorate.
The number of moles of ethylene oxide added is 60 to 100 moles, preferably 65 to 95 moles, and more preferably 70 to 90 moles. If the number of moles of ethylene oxide added is less than 60 moles, the persistence of bubbles during washing is lowered, and a moist feeling after washing cannot be obtained sufficiently. When the added mole number of ethylene oxide exceeds 100 moles, the viscosity at the time of melting is remarkably high and handling is poor, so that not only industrial production is difficult, but also the discharge performance from the pump former is deteriorated.

  Although the fatty acid in a component is not specifically limited, C8-C22 saturated or unsaturated, linear or branched fatty acid can be used. Examples include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, oleic acid, isostearic acid and behenic acid, preferably capric acid, lauric acid and myristic acid, and most preferably lauric acid. Moreover, the fatty acid derived from natural fats and oils, such as coconut oil and palm kernel oil which has lauric acid as a main component, and mixed fatty acid can also be used conveniently.

The component b is a nonionic surfactant represented by the formula (I).
RCOX (I)
In the formula, RCO is an acyl group having 8 to 16 carbon atoms, preferably a lauroyl group having 10 to 14 carbon atoms, and most preferably 12 carbon atoms. Moreover, the fatty group derived from natural fats and oils, such as coconut oil and palm kernel oil which has lauric acid as a main component, and the acyl group of mixed fatty acid can also be used conveniently. The acyl group may be saturated or unsaturated, linear or branched, but a linear and saturated acyl group is preferred from the viewpoint of improving foam quality and storage stability. When the number of carbon atoms is less than 8, the foam persistence and cleansing effect at the time of washing is lowered, and there is concern about irritation to the skin and eyes. When the carbon number exceeds 16, the low-temperature stability is deteriorated.

X is a residue obtained by removing one hydrogen atom bonded to a nitrogen atom of one or more amine compounds selected from diethanolamine and / or N-methylethanolamine, or a hydrogen atom removed from one hydroxyl group of a disaccharide. Residue.
When X is diethanolamine or N-methylethanolamine, the compound of formula (I) is fatty acid diethanolamide or fatty acid N-methylethanolamide, respectively.
When X is a disaccharide residue, examples of the disaccharide include sucrose (sucrose), maltose, lactose, trehalose, cellobiose, and the like, and a compound in which the residue of these disaccharides and an acyl group are combined. Are sucrose (sucrose) monofatty acid ester, maltitol monofatty acid ester, lactose monofatty acid ester, trehalose monofatty acid ester, cellobiose monofatty acid ester, and the like. The disaccharide fatty acid ester used in the present invention may contain a di-triester or higher multiester in addition to the monoester, but the monoester is the main component (50% by mass or more). ) Is preferable.
The component b is preferably fatty acid diethanolamide, fatty acid N-methylethanolamide, sucrose (sucrose) monofatty acid ester, trehalose monofatty acid ester, more preferably fatty acid diethanolamide, sucrose (sucrose) monofatty acid ester. is there.

  The component c is an acylamino acid type anionic surfactant having an acyl group having 8 to 14 carbon atoms. In the present invention, the acylamino acid type anionic surfactant means an amino acid containing a primary to tertiary amino group and a carboxylic acid group or sulfonic acid group in the same molecule, and a fatty acid having 8 to 14 carbon atoms. An acylated product, which is produced mainly by the Schotten-Baumann reaction using fatty acid chloride as an acylating agent. As amino acids containing primary to tertiary amino groups and carboxylic acid groups or sulfonic acid groups in the same molecule, natural acidic or neutral amino acids obtained by extraction methods or fermentation methods, synthetic methods or enzymatic methods Examples include synthetic acidic or neutral amino acids. Specific examples of amino acids include glutamic acid, aspartic acid, glycine, alanine, taurine, methyltaurine, sarcosine (N-methylglycine), β-alanine and the like, and L-form, D-form, and racemic form may exist, respectively. However, any of these can be used.

The type of acylamino acid type anionic surfactant that is an acylated product of the above amino acid can be appropriately selected depending on the purpose, for example, acylmethyl taurine salt, acyl taurine salt, acylmethyl-β-alanine or the like. Examples thereof include a salt, acyl-β-alanine or a salt thereof, acylglutamic acid or a salt thereof, acylglycine or a salt thereof, acylaspartic acid or a salt thereof, acylsarcosine or a salt thereof. Among them, acylmethyl taurine salt, acylmethyl-β-alanine or a salt thereof is preferable in that the persistence of foam during washing and the moist feeling after washing can be obtained.
The salt is not particularly limited, and examples thereof include alkali metal salts and alkanolamine salts. Examples of the alkali metal salt include sodium salt and potassium salt, and examples of the alkanolamine salt include monoethanolamine salt and triethanolamine salt. In order to further increase the persistence of the foam, an alkali metal salt is preferable, and a sodium salt is most preferable.
The carbon number of the acyl group of component c is 8 to 14, preferably 8 to 12, and most preferably 10. If the number of carbon atoms is less than 8, the foam persistence and cleansing power at the time of use are lowered, and there is concern about irritation to the skin and eyes. When carbon number exceeds 14, the sustainability of the foam at the time of use and low-temperature stability will deteriorate.
The component d is water, and purified water such as distilled water or ion exchange water can be preferably used.

Content of a component is 0.5-20 mass% with respect to the liquid cleaning composition whole quantity, Preferably it is 1.0-18 mass%, More preferably, it is 2-16 mass%. When the content of the component a exceeds 20% by mass, the viscosity of the cleaning liquid increases and the dischargeability from the pump former becomes worse. If it is less than 0.5, the persistence of the foam is insufficient.
Content of b component is 0.3-8 mass% with respect to the liquid cleaning composition whole quantity, Preferably it is 0.4-6 mass%, More preferably, it is 0.6-4 mass%. When the content of the component b exceeds 8% by mass, there is a concern about low-temperature stability and deterioration of discharge properties due to thickening of the cleaning liquid, and when the content is less than 0.3, cleansing power is reduced.
Content of c component is 0.2-4 mass% with respect to the liquid cleaning composition whole quantity, Preferably it is 0.3-3 mass%, More preferably, it is 0.4-2 mass%. When the content exceeds 4% by mass, there is a concern about irritation to the skin, and when the content is less than 0.2% by mass, the persistence of foam deteriorates.

The sum [a + b + c] of component a, component b, and component c is 1 to 30% by mass, preferably 2 to 25% by mass, and more preferably 4 to 20% by mass with respect to the total amount of the liquid detergent composition. . When [a + b + c] exceeds 30% by mass, not only is it disadvantageous in cost, but also there is a concern that the viscosity of the cleaning liquid increases and the dischargeability deteriorates. Moreover, when [a + b + c] is less than 1% by mass, the foam persistence and cleansing power during washing are insufficient.
The mass ratio [a / c] of the a component and the c component is 1/8 to 40/1, preferably 1/1 to 20/1, more preferably 4/1 to 16/1. When [a / c] exceeds 40/1, the foam persistence and cleansing power during washing are insufficient. On the other hand, if [a / c] is less than 1/8, the persistence of the foam during washing and the moist feeling after washing are insufficient.
The component a has a property of increasing the viscosity of water in the foam film and suppressing drainage causing foam breakage because the molecular weight of the polyethylene glycol chain which is a hydrophilic site is large. Excellent surface tension, that is, the ability to quickly adsorb to the newly formed gas-liquid interface. Therefore, combining the a component, the b component, and the c component in the above ratios synergistically enhances the persistence of bubbles during cleaning, exhibits a good cleansing effect, and gives a moist feeling after cleaning. Can do.

Furthermore, other components can be added to the cleaning composition of the present invention as long as the effects of the invention are not impaired. Examples of other optional components include fats and oils such as vegetable oils and animal fats; squalane, Hydrocarbon oils such as liquid paraffin and hydrogenated polyisobutene;
Higher alcohols such as cetyl alcohol, stearyl alcohol, cetostearyl alcohol, silicones such as cyclic silicone, dimethylpolysiloxane, amino-modified polysiloxane; 2-ethylhexyl palmitate, glyceryl tri (capryl / caprate), isopropyl myristate, etc. Ester oil; Cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, cocoylarginine ethyl PCA; other than component (c) such as polyoxyethylene lauryl ether sulfate, α-olefin sulfonate, fatty acid soap Anionic surfactants of: amphoteric such as alkyldimethylaminoacetic acid betaine, N-acyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, alkyliminodiacetic acid salt Surfactant; Nonionic surfactant other than component a and component b such as polyoxyethylene alkyl ether, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester; solvent such as ethanol, propylene glycol, glycerin; citrate PH adjusters such as succinate, malate and tartrate, antioxidants such as tocopherol, polysaccharides, amino acids, peptides, preservatives, fragrances, colorants and the like can be appropriately blended.
The pH value of the liquid detergent composition of the present invention is not particularly limited, but is preferably 4.5 to 8.0, more preferably 5.0 to 7.5, and even more preferably at 25 ° C. and the stock solution. Is 5.5-7.0. If the pH deviates greatly from neutrality, there is a concern about hydrolysis of the component a.

Although the formulation aspect of the liquid detergent composition in this invention is not specifically limited, It is suitable as a washing | cleaning agent for foam container filling which discharges a liquid detergent composition in foam form. An example of the former container is a non-gas type foam discharge container. The non-gas type foam discharge container is not particularly limited as long as the liquid detergent composition can be mixed with air and discharged in a foamed state. For example, the foam is discharged by manually squeezing the bottle body. Examples thereof include a squeeze foamer container that can be discharged, a pump foamer container that can discharge bubbles by pushing down the nozzle portion, and the like, which can be appropriately selected according to the purpose. However, as long as the final formulation does not require viscosity, it may be used as it is.
The liquid cleaning composition of the present invention can be used as a body shampoo, hand soap, hair shampoo, etc., in addition to a cleansing agent for makeup removal.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto.
<Preparation of foam cleansing material>
All the raw materials of Examples 1 to 5 and Comparative Examples 1 to 14 shown in Table 1 and Table 2 were put into a beaker and stirred for 1 hour using a propeller while heating in a water bath at 60 ° C. After confirmation of dissolution, the product was cooled to 40 ° C. or lower to obtain a cleansing material. The prepared cleansing material was filled into a pump former container and used for the following evaluation.
The numbers in Table 1 and Table 2 indicate mass%.
<Evaluation of foam cleansing fee>
A usability test was conducted by 20 professional panelists. Take 3 prepared pushes of foam cleansing (about 30mL) and remove makeup 1) Sustainability of foam during cleaning, 2) Cleansing power, 3) Moist feeling after cleaning Was rated in 4 grades and given a rating. And four-stage evaluation of AA-C was performed from the sum total of a score, and AA and A were set as the pass.

1) Foam persistence during cleaning <Absolute evaluation criteria>
(Score): (Evaluation)
3: The fine foam quality immediately after discharge not only lasts during washing, but also increases the creaminess and elasticity of the foam every time it is massaged during washing.
2: Fine foam quality immediately after discharge persists even during cleaning.
1: Fine foam quality immediately after discharge is lowered during cleaning.
0: The foam quality immediately after application is rough, or the foam quality during washing is significantly reduced.
<4-level evaluation based on the total score>
AA: Total score is 50-60 points A: Total score is 40-49 points B: Total score is 30-39 points C: Total score is less than 30 points

2) Cleansing power <Absolute evaluation criteria>
(Score): (Evaluation)
3: The removal of makeup is very good and a sufficient cleansing effect can be realized.
2: The makeup is well removed and the cleansing effect can be realized.
1: The removal of the makeup is not so good and the cleansing effect cannot be realized so much.
0: Makeup hardly disappears and cleansing effect cannot be realized at all.
<4-level evaluation based on the total score>
AA: Total score is 50-60 points A: Total score is 40-49 points B: Total score is 30-39 points C: Total score is less than 30 points

3) Moist feeling after cleaning <Absolute evaluation criteria>
(Score): (Evaluation)
3: A sufficient moist feeling can be realized after rinsing.
2: Can feel moisture after rinsing.
1: Cannot feel moist after rinsing.
0: Not only can the moisture not be felt after rinsing, but also the skin after washing has an unpleasant feel such as a tightness, tingling, and sliminess.
<4-level evaluation based on the total score>
A: Total score is 50-60 points A: Total score is 40-49 points B: Total score is 30-39 points C: Total score is less than 30 points 4) Low temperature stability Foam cleansing material prepared After filling 50 g into a 50 mL screw tube and sealing it, it was stored in a thermostatic bath at 5 ° C. for 1 month. The properties of the sample after the test were confirmed and evaluated according to the following criteria.
○: No change in the appearance of the sample is confirmed.
X: Changes in the appearance of the sample, such as precipitation and solidification, are confirmed.
The results are shown in Tables 1 and 2.
The cleansing charges of the examples were good evaluations in all the evaluation items, whereas the cleansing charges of the comparative examples were inferior in evaluation with at least one item.

(Example 6)
Mixing rate (mass%)
(A) POE monolaurate (80) sorbitan 10.0
(B) Mono fatty acid diethanolamide 2.0
(C) Cocoyl methyl taurine Na 1.0
(Other ingredients)
Lauric acid BG 0.3
Lauramidopropylhydroxysultain 0.5
Decyl glucoside 0.4
1,3-BG 8.0
Sorbitol 2.0
Citric acid 0.05
Na citrate 0.95
Ascorbyl glucoside 0.1
Etidronic acid 4Na 0.05
Dimethyldiallylammonium chloride / acrylamide copolymer 0.08
Water (ion exchange water)

(Example 7)
Mixing rate (mass%)
(A) POE monolaurate (80) sorbitan 10.0
(B) Sucrose monolaurate 2.0
(C) Cocoylmethyl-β-alanine Na 1.0
(Other ingredients)
Lauroyl glutamate di (phytosteryl / octyldodecyl) 0.1
2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine 0.5
Polyglyceryl laurate-10 0.4
Polyglyceryl-4-lauryl ether 0.1
Isopentyldiol 6.0
Ethanol 4.0
Ethylenediaminetetraacetic acid diNa 0.1
Malate Na 0.2
Tocopherol 0.05
Acrylic acid / dimethyldiallylammonium chloride / acrylamide copolymer
0.3
Water (ion-exchanged water) Remaining In the cleaning agents of Examples 6 and 7, fine foam persisted even during cleaning, cleansing power and good moisture feeling after cleaning, and excellent low-temperature stability.

Claims (1)

A liquid detergent composition containing the following components (a), (b), (c), and (d),
The content of the component (a) with respect to the total amount of the liquid detergent composition is 0.5 to 20% by mass, the content of the component (b) is 0.3 to 8% by mass, and the content of the component (c) is 0.2. -4% by mass, the sum [a + b + c] of the contents of components (a), (b), and (c) is 1-30% by mass, and the mass ratio of components (a) and (c) [a / c] is 1/8 to 40/1, a liquid detergent composition.
(A) Polyoxyethylene sorbitan monofatty acid ester having an average addition mole number of ethylene oxide of 60 to 100 mol (b) Nonionic surfactant RCOX (I) represented by the formula (I)
(Wherein RCO is an acyl group having 8 to 16 carbon atoms, X is a residue obtained by removing one hydrogen atom bonded to the nitrogen atom of one or more amine compounds selected from diethanolamine and / or N-methylethanolamine) Or a residue obtained by removing a hydrogen atom from one hydroxyl group of a disaccharide.)
(C) an acylamino acid type anionic surfactant having an acyl group having 8 to 14 carbon atoms (d) water