JP2010241721A - Shampoo composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shampoo composition capable of forming fine foam and having good foam breakage.
An acetate type anionic surfactant represented by the following general formula (1), an alkyl alkanol type nonionic surfactant, and O- [2-hydroxy-3- (trimethylammoniopropyl] hydroxyethylcellulose chloride. The above-mentioned problems are solved by a shampoo composition characterized in that is formulated.
_{RO- (CH 2 CH 2 O)} n -CH 2 COOM (1)
[In the general formula (1), R is a linear or branched alkyl group or alkenyl group having 8 to 24 carbon atoms, M is an alkali metal, ammonium or alkanolamine, and n is an integer of 2 to 15. is there. ]
[Selection figure] None

Description

  The present invention relates to a shampoo composition that can form fine-grained foam and has good foam breakage.

  In the shampoo used for washing the hair, the foam formed thereby penetrates well between the hairs to prevent friction between the hairs, thereby suppressing hair damage during washing. And the foam formed by shampoo is more likely to enter between hairs as the texture is finer. For these reasons, there is a demand for the development of a shampoo that can form fine bubbles.

  For example, Patent Document 1 discloses a detergent composition using an ether carboxylic acid surfactant having a specific structure, a glyceryl ether having a specific structure, and a cationic group-containing copolymer (cationic polymer) having a specific structure. (Shampoos for hair and body shampoos) have been proposed. And in patent document 1, it is stated that the foam composition is creamy.

JP 2005-336387 A

  By the way, shampoos are also required to have good foam breakage so that rinsing can be completed in a short time when washing hair. However, in general, finer and creamy foam tends to worsen the foam, so it is extremely difficult to improve the foam while improving the fineness of the foam formed by the shampoo. It is.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shampoo composition capable of forming fine bubbles and having good bubble breakage.

  As a result of extensive studies, the present inventors have determined that an acetate-type anionic surfactant having a specific structure is converted to an alkylalkanol-type nonionic surfactant and O- [2-hydroxy-3- (trimethylammoniopropyl chloride). It was found that by using in combination with hydroxyethylcellulose, a shampoo composition with good foam breakage can be formed while the foam texture is fine, and the present invention has been completed.

  That is, the shampoo composition of the present invention that has achieved the above object is an acetate-type anionic surfactant, an alkylalkanol-type nonionic surfactant represented by the following general formula (1), and an O- [2 chloride] -Hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose is blended.

_{RO- (CH 2 CH 2 O)} n -CH 2 COOM (1)
[In the general formula (1), R is a linear or branched alkyl group or alkenyl group having 8 to 24 carbon atoms, M is an alkali metal, ammonium or alkanolamine, and n is an integer of 2 to 15. is there. ]

  ADVANTAGE OF THE INVENTION According to this invention, the fine shampoo composition which can form fine foam and has a favorable foam breakage can be provided.

  The acetate type anionic surfactant used in the shampoo composition of the present invention is represented by the above general formula (1). Specific examples thereof include, for example, polyoxyethylene (4.5) lauryl. Examples include sodium ether acetate, polyoxyethylene (10) sodium lauryl ether acetate, polyoxyethylene (3) sodium tridecyl ether acetate, etc., and only one of these may be used. (In each of the above compounds, the numerical value in parentheses after oxyethylene means the average number of moles of ethylene oxide added.) Among these, polyoxyethylene (10) sodium lauryl ether acetate is preferable because foaming power is higher and finer foam quality can be obtained.

  The amount of the acetate type anionic surfactant represented by the general formula (1) in the shampoo composition is preferably 4% by mass or more from the viewpoint of ensuring the effect of the present invention better. More preferably, it is 5 mass% or more. However, if the amount of the above-mentioned acetate-type anionic surfactant in the shampoo composition is too large, irritation to the skin tends to increase, and when applied to hair that has been dyed, it will accelerate discoloration. There is a fear. Therefore, the blending amount of the acetate type anionic surfactant represented by the general formula (1) in the shampoo composition is preferably 15% by mass or less, and more preferably 12% by mass or less.

  Examples of the alkyl alkanol-type nonionic surfactant used in the shampoo composition of the present invention include coconut oil fatty acid N-methylethanolamide, lauric acid diethanolamide, palm kernel oil fatty acid diethanolamide, stearic acid monoethanolamide, Examples thereof include lauric acid monoisopropanolamide, and only one of these may be used, or two or more may be used in combination. Among these, coconut oil fatty acid N-methylethanolamide is preferable because the thickening effect is high and the shampoo composition is less susceptible to turbidity.

  The blending amount of the alkyl alkanol-type nonionic surfactant in the shampoo composition is 0.5% by mass from the viewpoint of better ensuring the effect of the present invention (particularly, the effect capable of forming fine bubbles). The above is preferable, and the content is more preferably 1% by mass or more. However, if the amount of the alkyl alkanol type nonionic surfactant in the shampoo composition is too large, the viscosity becomes high, so that the foam quality becomes heavy and the tendency of the foam to fall out tends to be reduced, or it becomes difficult to wash. There is a risk. Therefore, the compounding amount of the alkyl alkanol type nonionic surfactant in the shampoo composition is preferably 7% by mass or less, and more preferably 5% by mass or less.

  The shampoo composition of the present invention uses O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride, which is O- [2-hydroxy-3- (trimethylammoniopropyl] hydroxyethylcellulose chloride. The cationization degree is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, and preferably 2.0% by mass or less. By using O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride having a degree of cationization, a shampoo composition with better defoaming can be constituted.

  The degree of cationization of O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride is determined by the method described on page 210 of “Compositional ingredient standard by cosmetic variety” (Pharmaceutical Daily). This is a value represented by “total nitrogen content”, and is specifically determined as follows: O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride is dried at 105 ° C. for 3 hours. About 1 g of the solution is accurately weighed and dissolved by adding water to make exactly 1000 ml, accurately taking 5 ml of this solution and adding water to 50 ml, adding 4 drops of toluidine blue reagent solution, and adding 0.0025N polyvinyl sulfate. Titrate with potassium test solution (main test) The end point of the titration is when the blue color of the solution changes to reddish purple. A blank test is carried out by the same method as described above, except that hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose is not used, and based on the above results, O- [2-hydroxy-3-chloride] (Trimethylammoniopropyl) The total nitrogen content of hydroxyethyl cellulose (ie, degree of cationization) is determined.

Amount of nitrogen (N) (% by mass)
= {(A−B) × 70.03} / {Amount of sample (g) × 100−C}
In the above formula, “amount of sample” is the amount of O- [2-hydroxy-3- (trimethylammoniopropyl] hydroxyethylcellulose chloride used in this test, and A is 0.0025 N required for this test. The amount (ml) of potassium polyvinyl sulfate test solution, B is the amount (ml) of 0.0025N polyvinyl potassium sulfate test solution required for the blank test, and C is a value determined by the following formula.

C = 100 × 0.8829 × ignition residue (%) / dry residue (%)
In the above formula, “0.8829” is a coefficient for converting the ignition residue of sodium sulfate into sodium chloride.

  The blending amount of O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride in the shampoo composition is 0.05% by mass or more from the viewpoint of ensuring better the effect of the present invention. However, it is preferable that the amount of O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride in the shampoo composition is too large. Further, the shampoo composition tends to remain on the scalp and may lead to stickiness and itching, so that the shampoo composition of O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride is used. The blending amount in is preferably 1% by mass or less, and 0.5% by mass or less. Rukoto is more preferable.

  In the shampoo composition of the present invention, water is mainly used as a medium. The amount of water in the shampoo composition is preferably 45 to 95% by mass.

  Moreover, the shampoo composition of this invention can mix | blend the various components used with normal cosmetics in the range which does not impair the effect of this invention other than said each component. Examples of such components include anionic surfactants other than the acetate type anionic surfactant represented by the above general formula (1), amphoteric surfactants, chloride O- [2-hydroxy-3- ( Polymers other than trimethylammoniopropyl] hydroxyethylcellulose, alcohols, fats and oils, esters, hydrocarbons, fatty acids, polyhydric alcohols, sequestering agents, antioxidants, pH adjusters and the like.

  Examples of the anionic surfactant other than the acetate type anionic surfactant represented by the general formula (1) include coconut oil fatty acid sodium, coconut oil fatty acid potassium, cocoyl isethionic acid and salts thereof (sodium salt, Potassium salts, etc.), disodium alkylsulfosuccinate, sodium lauroyl hydrolyzed silk, isostearic acid hydrolyzed silk AMP (2-amino-2-methyl-1-propanol salt of a condensate of isostearic acid and hydrolyzed silk), Cocoyl hydrolyzed soy protein potassium, cocoyl hydrolyzed collagen salt (sodium salt, potassium salt, etc.), sodium tetradecene sulfonate, sodium lauryl sulfate, triethanolamine lauryl sulfate, polyoxyethylene lauryl ether sodium sulfate, polyoxy Ethylene lauryl ether sulfate triethanolamine, polyoxyethylene lauryl ether phosphoric acid and its salts (sodium salt, potassium salt, etc.), acylamino acid and its salts [lauroyl aspartic acid, coconut oil fatty acid acyl glutamic acid, lauroyl glutamic acid, myristoyl glutamic acid, stearoyl Acylamino acids such as glutamic acid, coconut oil fatty acid methylalanine, lauroylmethylalanine, myristoylmethylalanine, coconut oil fatty acid acylglycine, coconut oil fatty acid methyltaurine, lauroylmethyltaurine, coconut oil fatty acid sarcosine, lauroylsarcosine, and these acylamino acids Salt (sodium salt, potassium salt, triethanolamine salt, etc.)] and the like.

  Examples of amphoteric surfactants include amidopropyl betaine-type amphoteric surfactants such as lauric acid amidopropyl betaine solution, palm oil fatty acid amidopropyl betaine, isostearic acid amidopropyl betaine, linoleic acid amidopropyl betaine, and palm oil fatty acid amidopropyl betaine. Imidazoline type amphoteric surfactants such as undecyl-N-hydroxyethyl-N-carboxymethylimidazolinium betaine and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine; N-alkyl-N, N -Sodium dimethylammonium-N-propylsulfonate, sodium N-alkyl-N, N-dimethylammonium-N- (2-hydroxypropyl) sulfonate, N-fatty acid amidopropyl-N, N-dimethyla Amidoamine oxide type amphoteric surfactants such as lauric acid amidopropyl dimethylamine oxide; Moniumu-N-(2-hydroxypropyl) sulfobetaine type amphoteric surfactants such as sodium sulfonate and the like.

  Examples of the polymer other than O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride include, for example, sodium polyacrylate, cellulose ether, sodium alginate, carboxyvinyl polymer, hydroxyethylcellulose, polyvinylpyrrolidone, carrageenan, Guar gum, cationized guar gum, hyaluronic acid, chitosan, polyethylene glycol, etc. Examples of the alcohol include lower alcohols such as ethyl alcohol, isopropyl alcohol, butyl alcohol, benzyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl. Examples include higher alcohols such as alcohol, oleyl alcohol, and behenyl alcohol.

  Examples of the fats and oils include shea fat, wheat germ oil, rice bran oil, macadamia nut oil, meadow home oil, and egg yolk oil. Examples of the ester include isopropyl myristate, myristyl myristate, stearyl stearate, isostearyl laurate, octyldodecyl oleate, hexyl 2-ethylhexanoate, di-2-ethylhexyl succinate, dioctyl succinate, and phytosteryl isostearate. Is mentioned. Examples of the hydrocarbon include candelilla wax, microcrystalline wax, jojoba oil, beeswax, carnauba wax, light isoparaffin, light liquid isoparaffin, squalane, ceresin, paraffin, liquid paraffin, liquid isoparaffin, petrolatum and the like.

  Examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylenic acid, and the like. Examples of the polyhydric alcohol include ethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, polyglycerin, and 1,3-butylene glycol.

  Examples of the sequestering agent include alanine, edetic acid, disodium edetate, diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetic acid pentasodium, and the like. Examples of the antioxidant include dl-α-tocopherol, dibutylhydroxytoluene, erythorbic acid, anhydrous sodium sulfite and the like. Examples of the pH adjusting agent include acids such as citric acid, phosphoric acid, malic acid, tartaric acid, and lactic acid; alkaline agents such as ammonia, sodium hydroxide, triethanolamine, and arginine.

  The shampoo composition of the present invention can be prepared by dissolving or dispersing each of the above components in water as a medium. The shampoo composition of the present invention may be liquid, gel, or emulsion.

  Hereinafter, the present invention will be described in detail based on examples. However, the following examples do not limit the present invention. In Tables 1 to 3 below, the amount of each component is shown in% so that the total amount of the shampoo composition is 100%. Among them, the display of% is omitted, and only the numerical value indicating the blending amount is displayed. Further,% used in other than Tables 1 to 3 in this example means mass% unless otherwise specified.

Examples 1-12 and Comparative Examples 1-6
The shampoo compositions of Examples 1 to 12 and Comparative Examples 1 to 6 were prepared with the compositions shown in Tables 1 to 3.

In addition, the components (A) -1 to 3, the components (B) -1 to 4, and the components (C) -1 to 4 described in Tables 1 to 3 are as follows.
Component (A) -1: Kao Akipo RLM-100NV (trade name) manufactured by Kao Corporation: Polyoxyethylene (10) Sodium lauryl ether acetate is contained in 24%.
Component (A) -2: “Emar 227HP (trade name)” manufactured by Kao Corporation: 27% polyoxyethylene (2) sodium lauryl ether sulfate.
Component (A) -3: “Amisoft CS-22 (trade name)” manufactured by Ajinomoto Co., Inc .: Contains 24.2% N-coconut oil fatty acid acyl-L-glutamate sodium.
Component (B) -1: “Aminone C-11S (trade name)” manufactured by Kao Corporation: Palm oil fatty acid N-methylethanolamide.
Component (B) -2: “Amizole CDE (trade name)” manufactured by Kawaken Fine Chemical Co., Ltd .: Palm oil fatty acid diethanolamide.
Component (B) -3: “Amizole CME (trade name)” manufactured by Kawaken Fine Chemical Co., Ltd .: Palm oil fatty acid monoethanolamide.
Component (B) -4: “Mydoll 10 (trade name)” manufactured by Kao Corporation: Contains 40% of decylglucoside.
Component (C) -1: “UCARE Polymer JR-30M (trade name)” manufactured by Dow Chemical Japan Co., Ltd .: containing 1% of O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride, viscosity 1600 cPa · s, cationization degree 1.60%.
Component (C) -2: “UCARE Polymer JR-400 (trade name)” manufactured by Dow Chemical Japan Co., Ltd .: containing 1% of O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride, viscosity 400 cPa · s, cationization degree 1.85%.
Component (C) -3: “Katinal LC-100 (trade name)” manufactured by Toho Chemical Industry Co., Ltd .: containing 1% of O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride, viscosity 600 cPa · s, degree of cationization 1.12%.
Component (C) -4: “Kachinal GC-100 (trade name)” manufactured by Toho Chemical Industry Co., Ltd .: Guar hydroxypropyltrimonium chloride.

  About the shampoo compositions of Examples 1 to 12 and Comparative Examples 1 to 6, the fineness of foam and the goodness of foam were evaluated by the following methods.

<Fineness of foam>
About the shampoo compositions of Examples 1 to 12 and Comparative Examples 1 to 6, 10 g and 90 g of water were put in a commercially available mixer (“MX2050” manufactured by Brown Gillette Japan Inc.) and stirred for 10 seconds to foam. Their state was evaluated visually. In addition, the state of the foam of each shampoo composition was prepared as a standard sample by preparing a solution in which only component (A) -1 was dissolved in purified water [the amount of component (A) -1 was 34%]. The shampoo composition was evaluated in accordance with the following criteria in comparison with the foam state when foamed by the same method.
◎ ... Finer than the standard sample foam.
○ ... Finer than the standard sample foam.
X: The texture of the standard sample is the same as the texture.

<Out of foam>
For the shampoo compositions of Examples 1 to 12 and Comparative Examples 1 to 6, foaming was performed with a mixer in the same manner as in the above-mentioned evaluation of “fineness of foam texture”. The time when the interface rose and the height reached a position 2 cm high from the bottom of the mixer container and the time the height reached 3 cm from the bottom of the mixer container were measured. It can be evaluated that the shorter the time, the better the bubble breakage.

  Each evaluation result is shown in Tables 4 and 5. In Tables 4 and 5, the time from the end of stirring of the mixer until the height of the interface between the foam and the moisture reaches a position 2 cm high from the bottom of the container of the mixer is “time to 2 cm in height”. And the time when the height of the interface between the foam and the moisture from the bottom of the mixer reaches the position of 3 cm in height from the bottom of the mixer is indicated as “time to 3 cm in height”.

  As is apparent from Table 4, the acetate type anionic surfactant represented by the general formula (1), the alkyl alkanol type nonionic surfactant, and O- [2-hydroxy-3- (trimethyl chloride) chloride. The shampoo compositions of Examples 1 to 12 composed of ammonio) propyl] hydroxyethylcellulose have finer foam texture and better foam removal than the standard sample. The shampoo compositions of Example 7 and Example 8 were particularly fine in foam texture.

  On the other hand, as is clear from Table 5, the shampoo compositions of Comparative Examples 1 to 6 are inferior in fineness of foam and foam breakage. Specifically, the shampoo compositions of Comparative Example 1 and Comparative Example 2 constituted by using another anionic surfactant instead of the acetate type anionic surfactant represented by the general formula (1) are: The texture of the foam is equivalent to that of the standard sample, and the foam is not cut well. Moreover, it replaced with the alkyl alkanol type nonionic surfactant, the shampoo composition of Comparative Examples 3-5 which used another nonionic surfactant, and chloride O- [2-hydroxy-3- (trimethylammonio) The shampoo composition of Comparative Example 6 using another cationic polymer in place of) propyl] hydroxyethylcellulose has the same foam texture as the standard sample.

Claims (4)

An acetate type anionic surfactant represented by the following general formula (1), an alkylalkanol type nonionic surfactant, and O- [2-hydroxy-3- (trimethylammoniopropyl) hydroxyethylcellulose chloride were blended. A shampoo composition characterized by that.
_{RO- (CH 2 CH 2 O)} n -CH 2 COOM (1)
[In the general formula (1), R is a linear or branched alkyl group or alkenyl group having 8 to 24 carbon atoms, M is an alkali metal, ammonium or alkanolamine, and n is an integer of 2 to 15. is there. ]   The shampoo composition according to claim 1, wherein the amount of the acetate type anionic surfactant represented by the general formula (1) is 4 to 15% by mass.   The shampoo composition according to claim 1 or 2, wherein the alkyl alkanol type nonionic surfactant is coconut oil fatty acid N-methylethanolamide. The shampoo composition according to any one of claims 1 to 3, wherein the amount of the alkyl alkanol-type nonionic surfactant is 0.5 to 7% by mass.