JP5791001B2 - Liquid detergent composition - Google Patents

Description

  The present invention relates to a liquid detergent composition, and more particularly to a liquid detergent composition for filling 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 oil components to enhance cleansing power. As a facial cleanser, there is an aqueous detergent that uses soap and a surfactant as a washing component, with an emphasis on the refreshing feeling after washing. Aqueous cleaning materials are usually washed using foam that is obtained by whipping water and air in the palm of the hand, but in order to save the trouble of whipping, the cleaning liquid is spouted with air from the fine holes. Therefore, a pump former type cleaning material that discharges as foam has 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, simplification of the makeup step has been aimed at, and in the case of a pump former type cleaning material, a cleaning material that has both a cleansing function and a facial cleaning function and that does not require a double facial cleaning has been developed. 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, when the cleaning composition of Patent Document 1 is used as a cleansing agent, the foam persistence and cleansing power during cleaning are insufficient.
As an attempt to increase cleansing power (detergency) so far, for example, Patent Document 2 discloses a liquid cleaning for food or dish containing polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester and / or glycerin fatty acid ester, and hydroxycarboxylic acid. Agent compositions have been proposed. However, when the cleaning composition of Patent Document 2 is used as a cleansing agent, the foam persistence during cleaning is insufficient. Patent Document 3 proposes a cleaning composition containing an acyl taurine salt and monoacylglycerol. Although the detergent composition of Patent Document 3 provides good foaming and foam quality, cleansing power was insufficient when used as a cleansing material.

Japanese Patent Laid-Open No. 2000-169884 JP 2010-116494 A JP-A-8-253793

  Therefore, the problem to be solved by the present invention is to provide a liquid detergent composition for filling a former container, in which fine bubbles persist even during washing, excellent cleansing power, and excellent low-temperature stability. .

In order to solve the above problems, the present inventors have intensively studied, and by adopting the configuration of the present invention, fine foam persists even during washing, has excellent cleansing power, and is excellent in low-temperature stability. A liquid detergent composition for use was obtained.
That is, the present invention is as follows.
A liquid detergent composition for filling a former container, which contains the following components (a), (b), (c), and (d), and contains the component (a) with respect to the total amount of the liquid detergent composition The amount is 0.5 to 20% by mass, the content of the component (b) is 0.2 to 8% by mass, the content of the component (c) is 0.1 to 4% by mass, and the components (a) and ( The sum of the contents of b) and (c) [a + b + c] is 1 to 30% by mass, and the mass ratio [a / c] of the component (a) to the component (c) is 2/1 to 20/1. Liquid detergent composition for filling a former container.
(A) Polyoxyethylene sorbitan monolaurate having an average addition mole number of ethylene oxide of 60 to 100 moles (b) Fatty acid glyceride having 8 to 12 carbon atoms of fatty acid, and the content of monoglyceride with respect to the total amount of glyceride Fatty acid glyceride which is 85% by mass or more (c) Acyl amino 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 filling a former container, and the foam discharged from the former container is fine and fine in quality, and is creamy and elastic even during the removal of dirt on the hands and face. High quality foam is retained. 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 cleansing agent for makeup removal. Excellent low temperature stability.

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 mono-fatty acid ester having an average added mole number of ethylene oxide of component a is 60 to 100 moles is a nonionic compound obtained by adding ethylene oxide to sorbitan fatty acid ester which is a partial ester of sorbitol or sorbitan and a fatty acid. It is a surfactant. Sorbitan fatty acid esters can be synthesized as 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 of the present invention are monoesters. Is preferably the main component (50 mass% or more). 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.

  The fatty acid residue in the component a is not particularly limited, but a saturated or unsaturated, linear or branched fatty acid having 8 to 22 carbon atoms can be used. Examples include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, oleic acid, isostearic acid, behenic acid and the like, preferably capric acid, lauric acid, myristic acid, 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 fatty acid glyceride having 8 to 12 carbon atoms in the fatty acid, and the content of monoglyceride with respect to the total amount of glyceride is 85% by mass or more. Fatty acid glyceride is obtained by esterification reaction of fatty acid and glycerin, or transesterification reaction of fats and oils, fatty acid ester and glycerin. What is obtained by the reaction is called reactive glyceride. The reaction glyceride is generally a mixture comprising 1-monoglyceride as a main component, 2-monoglyceride, 1,3-diglyceride, 1,2-diglyceride, triglyceride and glycerin as subcomponents. By distilling the reaction glyceride, it is possible to increase the purity of the monoglyceride, and the resulting product is called distilled monoglyceride.

In the component b, the content of monoglyceride with respect to the total amount of glyceride is 85% by mass or more, preferably 87% by mass or more, more preferably 90% by mass or more. When the content of monoglyceride with respect to the total amount of glyceride is less than 85% by mass, the sustainability of foam is not sufficiently exhibited, and the cleansing power is reduced. The monoglyceride content can be measured by gas chromatography or the like after preliminarily treating the sample with silyl ether.
The fatty acid of component b has 8 to 12 carbon atoms, more preferably 10 to 12 carbon atoms, and most preferably 12 carbon atoms. The preferable purity of the fatty acid having 8 to 12 carbon atoms as a raw material is 80% by mass or more, more preferably 85% by mass or more, and further preferably 90% by mass or more. If the carbon number is less than 8, there is a concern about irritation to the skin and eyes, and if the carbon number exceeds 12, the low-temperature stability deteriorates.

  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 the acylamino acid type anionic surfactant that is an acylated product of the above amino acid can be appropriately selected according to the purpose. For example, acylmethyl taurine salt, acyl taurine salt, acylmethyl-β-alanine or A salt thereof, acyl-β-alanine or a salt thereof, acylglutamic acid or a salt thereof, acylglycine or a salt thereof, acylaspartic acid or a salt thereof, and the like. 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. Further, acylamino acid type anionic surfactants include L-form, D-form and racemic form, and any of these can be used as the c component.
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 increase the persistence of the foam, an alkali metal salt is preferable, and a sodium salt is most preferable among them.

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 1-18 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 former container becomes poor. If it is less than 0.5% by mass, the persistence of the foam is insufficient.
Content of b component is 0.2-8 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 dischargeability due to thickening of the cleaning liquid, and when the content is less than 0.2% by mass, the cleansing power decreases.
Content of c component is 0.1-4 mass% with respect to liquid cleaning composition whole quantity, Preferably it is 0.2-3 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 0.1% 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, more preferably 8 to 21% by mass, based on 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, if [a + b + c] is less than 1 mass%, the persistence of the foam at the time of washing | cleaning and the cleansing force are inadequate. The mass ratio [a / c] of the a component and the c component is 2/1 to 20/1, preferably 4/1 to 16/1, more preferably 8/1 to 12/1. When [a / c] exceeds 20/1, the foam persistence and cleansing power during washing are insufficient. On the other hand, if [a / c] is less than 2/1, the persistence of the foam during washing is 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 at the above ratios can synergistically increase the persistence of the bubbles during the cleaning, and exhibit a good cleansing effect.

  Furthermore, other components can be added to the disinfectant 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. Hydrocarbon oils such as squalane, liquid paraffin and hydrogenated polyisobutene; higher alcohols such as cetyl alcohol, stearyl alcohol and cetostearyl alcohol; silicones such as cyclic silicone, dimethylpolysiloxane and amino-modified polysiloxane; palmitic acid-2 -Ester oils such as ethylhexyl, tri (capryl / capric acid) glyceryl, isopropyl myristate; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, cocoylarginine ethyl PCA; polyoxyethylene lauryl ether Anionic surfactants other than component c, such as tersulfate, α-olefin sulfonate, fatty acid soap; alkyldimethylaminoacetic acid betaine, N-acyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, Amphoteric surfactants such as alkyliminodiacetates; nonionic surfactants other than component a and component b such as polyoxyethylene alkyl ether, polyglycerol fatty acid ester, polyoxyethylene glycerol fatty acid ester; ethanol, propylene glycol, Solvents such as glycerin; pH adjusters such as citrate, succinate, linogoate and tartrate; antioxidants such as tocopherol; polysaccharides, amino acids, peptides, preservatives, fragrances, colorants, etc. Can be blended.

  The pH of the disinfectant cleaning composition of the present invention is not particularly limited, but is preferably 4.5 to 8.0, more preferably 5.0 to 7.5, 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.

The liquid cleaning composition of the present invention is suitable as a cleaning agent for filling a former container in which the liquid in the container is discharged in the form of foam. As the former container, for example, a non-gas type foam discharge container is exemplified. 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, foam can be discharged by manually squeezing the bottle body. Examples thereof include a squeeze foamer container, a pump foamer container that can discharge bubbles by pushing down the nozzle portion, and the like, and can be appropriately selected according to the purpose.
The liquid detergent 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, although an Example demonstrates this invention further in detail, this invention is not limited by this.
<Preparation of foam cleansing material>
All the raw materials of Examples 1 to 4 and Comparative Examples 1 to 13 shown in Table 1 and Table 2 were put into a beaker and stirred at 60 ° C. for 1 hour using a propeller. 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.

In addition, the following raw materials were used as fatty acid glyceride which is b component, and a comparison component (b 'component).
[Component b of the present invention]
-Monolauric acid glyceride (A): manufactured by Taiyo Kagaku Co., Ltd. Sunsoft No. 750 (monoglyceride content: 92.2%)
[Comparison component (b ′ component)]
-Monocaprylic acid glyceride (B): Homotex PT (monoglyceride content: 56.0%) manufactured by Kao Corporation
-Tetraglycerin monolauryl ether-POE (23) lauryl ether-Glyceryl monostearate The numbers in Tables 1 and 2 indicate mass%.

  In Comparative Examples 1 to 9, any one of the components a to c is different from the component of the present invention, and in Comparative Examples 10 to 13, the blending amount or blending ratio of the components a to c is different from the present invention.

<Evaluation of foam cleansing fee>
A usability test was conducted by 20 professional panelists. Take the prepared foam cleansing 3 push (approx. 30 mL) and remove makeup. 1) Sustainability of foam during washing 2) Cleansing power Each panelist has the following absolute evaluation in 4 stages Evaluated and scored. 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. Moreover, about low temperature stability, the external appearance after 1-month preservation | save was observed visually.

1) Persistence of foam 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) Low temperature stability 50 g of the prepared foam cleansing material was filled in a 50 mL screw tube, sealed, and 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 results in all the evaluation items, whereas the cleansing charges of the comparative examples were inferior in evaluation with at least one item.

(Example 5) Mixing ratio (mass%)
(A) POE monolaurate (80) sorbitan 10.0
(B) Monolauric acid glyceride (A) 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 6) Compounding ratio (mass%)
(A) POE monolaurate (80) sorbitan 10.0
(B) Monolauric acid glyceride (A) 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 5 and 6, fine foam persisted even during cleaning, cleansing power and good moist feeling after cleaning, and excellent low-temperature stability.

Claims (1)

A liquid detergent composition for filling a former container 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 0.5 to 20 mass%, the content of component (b) is 0.2 to 8 mass%, the content of component (c) is 0.1 to 4 mass%, and components (a) and (b ) And (c), the former [a + b + c] is 1 to 30% by mass, and the mass ratio [a / c] of the component (a) to the component (c) is 2/1 to 20/1. Liquid detergent composition for filling containers.
(A) Polyoxyethylene sorbitan monolaurate having an average addition mole number of ethylene oxide of 60 to 100 moles (b) Fatty acid glyceride having 8 to 12 carbon atoms of fatty acid, and the content of monoglyceride with respect to the total amount of glyceride Fatty acid glyceride which is 85% by mass or more (c) Acyl amino acid type anionic surfactant having an acyl group having 8 to 14 carbon atoms (d) Water