JP5641595B2 - shampoo - Google Patents

Description

  The present invention relates to a shampoo that can bring the hair after washing into a state where the effect of the treatment agent to be applied next can be effectively extracted.

  In order to enhance the feel of hair during and after washing, shampoo is usually mixed with a cationized polymer (for example, Patent Documents 1 to 3).

JP 2006-225291 A JP 2006-232710 A JP 2006-347972 A

  The hair after washing with a shampoo is usually finished by drying, for example, by applying a treatment agent, further washing with water if necessary. However, the hair after washing with a shampoo containing a cationized polymer has a problem that the conditioning components in the treatment agent are difficult to adsorb.

  Therefore, in order to fully bring out the effect of the treatment agent, it is necessary to limit the amount of the cationized polymer blended in the shampoo. However, if the amount of the cationized polymer in the shampoo is reduced, there is a possibility that squeak may be felt on the hair during washing or after washing (before applying the treatment agent).

  Therefore, conventionally, the ratio of the anionic surfactant and the cationized polymer to be blended in the shampoo, the adjustment of the charge density of the cationized polymer (can be adjusted by selecting the degree of cationization, etc.) He devised choices to balance the feel of the hair during and after washing with ensuring the effect of the treatment applied after washing with shampoo. However, since there is a limit to the above balance adjustment by such a device, further improvement is required.

  The present invention has been made in view of the above circumstances, and its purpose is to suppress the squeak of the hair during and after washing, and the effect of the treatment agent to be applied next to the washed hair is effective. It is to provide a shampoo that can be pulled out.

  The shampoo of the present invention capable of achieving the above object is a shampoo containing at least an amphoteric surfactant, an anionic surfactant, and a cationized polymer, wherein the amphoteric surfactant is a fatty acid amidopropyldimethylaminoacetic acid. It is betaine, the compounding quantity of the said cationized polymer is 0.3-1 mass%, and the yukinoshita extract is further mix | blended, It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, the shampoo which can suppress the squeak of the hair during washing | cleaning and after washing | cleaning, and can make the state after the washing | cleaning the state by which the effect by the treatment agent to apply | coat can be pulled out effectively can be provided.

  In the shampoo of the present invention, the cationized polymer, which is a component that enhances the feel of hair, is used in a high blending amount as described above, and a fatty acid amidopropyldimethylaminoacetic acid that has a strong effect of enhancing the feel of hair in an amphoteric surfactant. Use betaine. In the present invention, by adopting these constitutions, squeaking of hair during or after washing with a shampoo is suppressed.

  However, as described above, in the shampoo using the cationized polymer in a high blending amount, the conditioning component of the treatment agent applied to the washed hair becomes difficult to adsorb on the hair. Therefore, in the shampoo of the present invention, a yukinoshita extract is blended, and this suppresses the occurrence of the problem that the adsorption of the conditioning component of the treatment agent to the hair after washing caused by the cationized polymer in the shampoo is inhibited. ing. Therefore, although the shampoo of the present invention uses the cationized polymer at a high blending amount as described above, the state in which the effect of the treatment agent to be applied next can be effectively extracted from the washed hair. Can be.

  Examples of fatty acid amidopropyldimethylaminoacetic acid betaine used in the shampoo of the present invention include lauric acid amidopropyldimethylaminoacetic acid betaine, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, and isostearic acid amidopropyldimethylaminoacetic acid betaine. Only one of these may be used, or two or more may be used. Among these, isostearic acid amidopropyldimethylaminoacetic acid betaine is preferable in that the feel of the hair after washing becomes better.

  The amount of fatty acid amidopropyldimethylaminoacetic acid betaine in the shampoo is preferably, for example, 0.5 to 20% by mass. If the amount of fatty acid amidopropyldimethylaminoacetic acid betaine in the shampoo is too small, the effects of using fatty acid amidopropyldimethylaminoacetic acid betaine (especially the effect of suppressing hair squeaking during and after washing) may be reduced. If it is too much, it tends to remain on the hair after washing and cause wrinkling.

  Moreover, an amphoteric surfactant other than fatty acid amidopropyldimethylaminoacetic acid betaine can also be mix | blended with a shampoo with fatty acid amidopropyldimethylaminoacetic acid betaine. Examples of amphoteric surfactants other than fatty acid amidopropyldimethylaminoacetic acid betaine include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, N-coconut oil fatty acid acyl-N-carboxymethoxyethyl-N -Disodium carboxymethylethylenediamine, N-coconut oil fatty acid acyl-N-carboxymethyl-N-hydroxyethylethylenediamine sodium and the like.

  Examples of the cationized polymer used in the shampoo of the present invention include cationized cellulose (such as chlorinated O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose), cationized guar gum, cationized starch, and chloride. Examples thereof include dimethyldiallylammonium / acrylamide copolymer.

  If the amount of the cationized polymer in the shampoo is too small, the effect of using the cationized polymer (the effect of suppressing hair squeaking during and after washing) becomes insufficient, so 0.3% by mass It is above, and it is preferable to set it as 0.5 mass% or more. In addition, if the amount of the cationized polymer in the shampoo is too large, it remains on the hair and accumulates by continuous use of the shampoo, and the hair tends to become stiff. Therefore, the amount of the cationized polymer in the shampoo is 1 It is preferably at most 0.7% by mass.

  In addition, the shampoo of the present invention is mixed with a Yukinoshita extract. Thereby, even if it increases the compounding quantity of the cationized polymer in a shampoo, the problem that the conditioning component of a treatment agent becomes difficult to adsorb | suck to the hair after washing | cleaning can be avoided.

  The reason is estimated as follows. The cationized polymer blended in the shampoo remains on the hair surface even after washing with the shampoo, thereby suppressing hair squeaking. Here, a cationic surfactant or a higher alcohol is generally used as a conditioning component of the treatment agent. However, the cationized polymer remaining on the hair surface inhibits the adsorption of the conditioning component in the treatment agent. . Therefore, if the amount of the cationized polymer in the shampoo is increased so that the amount of the cationized polymer remaining on the hair surface after washing increases, the conditioning components in the treatment agent cannot be sufficiently adsorbed to the hair, and these conditionings It is considered that the effects of the components cannot be secured satisfactorily.

  However, according to the study by the present inventors, the Yukinoshita extract has an action of enhancing the adsorptivity of conditioning components (particularly higher alcohols and cationic surfactants) in the treatment agent to the hair. Therefore, if the component of Yukinoshita extract adheres to the hair surface after washing with shampoo, the conditioning component in the treatment agent is good on the hair surface even if the amount of cationized polymer on the hair surface is large. It is presumed that it can be adsorbed onto

  In addition, the Yukinosita extract is marketed in the form which the component extracted from Yukinoshita melt | dissolved in the solvent, The commercial item of such a form can be used in the shampoo of this invention.

  The amount of shampoo extract of Yukinoshita extract (if the extract of Yukinoshita extract contains a solvent, the amount excluding the amount of solvent. The same applies to the amount of extract of Yukinoshita extract hereinafter) depends on the use of the extract of Yukinoshita. From the viewpoint of satisfactorily securing the above effect (effect of suppressing the adsorption inhibiting action of the conditioning component in the treatment agent by the cationized polymer on the hair), the content is preferably 0.0001% by mass or more.

  However, if the amount of the extract of yukinoshita in the shampoo is too large, the hair finished by applying a treatment agent after washing with the shampoo tends to become hard. Therefore, the blending amount of the Yukinoshita extract in the shampoo is preferably 0.1% by mass or less, and more preferably 0.01% by mass or less.

  Moreover, an anionic surfactant is mix | blended with the shampoo of this invention. Examples of the anionic surfactant include coconut oil fatty acid sodium, coconut oil fatty acid potassium, cocoyl isethionic acid and salts thereof (sodium salt, potassium salt, etc.), polyoxyethylene lauryl ether acetic acid and salts thereof (sodium salt, potassium salt). Salt), disodium alkylsulfosuccinate, sodium lauroyl hydrolyzed silk, isostearic acid hydrolyzed silk AMP (2-amino-2-methyl-1-propanol salt of condensate of isostearic acid and hydrolyzed silk), cocoyl Hydrolyzed soybean protein potassium, cocoyl hydrolyzed collagen salt (sodium salt, potassium salt, etc.), sodium tetradecenesulfonate, sodium lauryl sulfate, triethanolamine lauryl sulfate, polyoxyethylene lauryl ether Acid sodium, polyoxyethylene lauryl ether triethanolamine sulfate, polyoxyethylene lauryl ether phosphoric acid and its salts (sodium salt, potassium salt, etc.), acylamino acid and its salts [lauroyl aspartic acid, palm oil fatty acid acyl glutamic acid, lauroyl glutamic acid , Acyl amino acids such as myristoyl glutamic acid, stearoyl 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, lauroyl sarcosine, and And salts of these acylamino acids (sodium salt, potassium salt, triethanolamine salt, etc.)] It may be used only one of, or in combination of two or more kinds.

  The compounding amount of the anionic surfactant in the shampoo is preferably 2 to 25% by mass. If the amount of the anionic surfactant in the shampoo is too small, the detergency tends to be weak, and if it is too large, the hair after washing tends to be stiff.

  In addition, in the shampoo of this invention, it is preferable that the ratio of the compounding quantity of an amphoteric surfactant and the compounding quantity of an anionic surfactant shall be 1: 3 to 1: 6 by mass ratio. If the blending amount of the anionic surfactant is too small relative to the blending amount of the amphoteric surfactant, foaming tends to decrease, and the blending of the anionic surfactant is compared to the blending amount of the amphoteric surfactant. If the amount is too large, irritation to the scalp tends to occur, and the hair after washing tends to be stiff.

  Therefore, when an amphoteric surfactant other than fatty acid amidopropyldimethylaminoacetic acid betaine is used in combination, the blending amount of the amphoteric surfactant other than fatty acid amidopropyldimethylaminoacetic acid betaine is determined based on the total amount of amphoteric surfactant and the anion. It is preferable that the ratio of the surfactant to the blending amount satisfies the above preferred value and the blending amount of the fatty acid amidopropyldimethylaminoacetic acid betaine satisfies the above preferred value.

  The shampoo of the present invention preferably further contains an ester of pyrrolidone carboxylic acid (PCA) and an ethoxylated polyhydric alcohol. By blending an ester of PCA and ethoxylated polyhydric alcohol, it is possible to further suppress squeaking of the hair during and after washing.

  Examples of the ester of PCA and ethoxylated polyhydric alcohol include PCA isostearic acid polyethylene glycol hydrogenated castor oil, PCA glyceres isostearate and the like.

  The blending amount of the ester of PCA and ethoxylated polyhydric alcohol in the shampoo is preferably 0.01% by mass or more from the viewpoint of favorably securing the effect of its use. Moreover, since the hair after washing | cleaning tends to become stiff when there are too many compounding quantities of the ester of PCA and an ethoxylated polyhydric alcohol in a shampoo, it is preferable to set it as 3 mass% or less.

  The shampoo of the present invention uses water as a solvent in the same manner as a normal shampoo. The amount of water in the shampoo is preferably, for example, 25 to 85% by mass.

  Moreover, the various components currently mix | blended with hair cosmetics, such as normal shampoo other than said each component, can be added to the shampoo of this invention as needed. Examples of such additional components include oils (lanolin derivatives, liquid paraffin, higher fatty acids, higher alcohols, ester oils, silicone oils, etc.), thickeners that adjust the ease of shampoo removal, and hair after shampooing. Conditioning agents (conditioning agents other than the above components) that reduce squeaks and improve the finish, antioxidants and chelating agents for discoloration and oxidation prevention, anti-dandruff agents, bactericides, UV absorbers, wetting agents And fragrances.

  The shampoo of the present invention can be prepared by dissolving or dispersing each of the above components in water as a solvent.

  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 and 2 below, the amount of each component is expressed in% so that the total amount of shampoo is 100%, and in Table 3, the total amount of hair treatment agents is 100%. Is mass%, and in Tables 1 to 3, the display of% is omitted, and only the numerical value representing the blending amount is displayed.

Examples 1-10 and Comparative Examples 1-3
The shampoos of Examples 1 to 10 and Comparative Examples 1 to 3 were prepared with the compositions shown in Tables 1 and 2.

  In addition, some of the raw materials used for the preparation of the shampoo may contain components (solvents and the like) other than the components listed in the table. In Tables 1 and 2, the table included in such raw materials includes The amount of only the described components is shown as the blending amount. And in Table 1 and Table 2, “total 100” in the column of purified water means the total amount of each component other than purified water constituting the shampoo (in the raw material including components other than the components listed in the table) It means that the amount of purified water is added to the total amount including the amount of “components other than the components listed in the table” to 100%.

  In addition, “POE” in “POE (2) sodium lauryl ether sulfate” and “POE (3) sodium lauryl ether acetate” in Tables 1 and 2 is an abbreviation of “polyoxyethylene” and is in parentheses after POE. Is the average number of moles of oxyethylene units added. Further, “PEG” in “PCA isostearic acid PEG-40 hydrogenated castor oil” in Table 1 and Table 2 is an abbreviation for “polyethylene glycol”, and the numerical value after PEG is the average number of moles of oxyethylene units added. is there.

Moreover, the raw material used for preparation of the shampoo of Examples 1-10 and Comparative Examples 1-3 is as follows.
(1) Yukinoshita extract: “Falcolex Yukinoshita MB (trade name)” manufactured by Ichimaru Falcos.
(2) Amidopropyldimethylaminoacetic acid betaine isostearate: “Obazoline ISAB (trade name)” manufactured by Toho Chemical Industries.
(3) Coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine: “Obazoline CAB (trade name)” manufactured by Toho Chemical Industries.
(4) 2-Alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine: “Softazoline CH (trade name)” manufactured by Kawaken Fine Chemical Co., Ltd.
(5) POE (2) sodium lauryl ether sulfate: “Taipol NLES-227 (trade name)” manufactured by Fluorescent Oil Chemical Co., Ltd.
(6) Sodium cocoyl isethionate: “HOSTAPON SCI 85 G (trade name)” manufactured by Clariant Japan.
(7) POE (3) sodium lauryl ether acetate: “Enagicol EC-30 (trade name)” manufactured by Lion Corporation.
(8) Cationized cellulose: “UCARE Polymer JR-30M (trade name)” manufactured by Union Carbide.
(9) PCA isostearic acid PEG-40 hydrogenated castor oil: “Pyrotel CPI-40 (trade name)” manufactured by Nippon Emulsion Co., Ltd.

  Panelists were 10 women with hair longer than the shoulders, and one expert evaluator was assigned to each panelist, and the effects of using the shampoos of the examples and comparative examples were evaluated using the hair of these panelists.

  As a standard product, 3 g of the shampoo of Comparative Example 1 is applied to the left half of the head of each panelist, and 3 g of the shampoo of Examples 1 to 10 or Comparative Examples 2 to 3 is applied to the right half of the head. Apply and wash, then rinse with water. Next, 6 g of the treatment having the composition shown in Table 3 was applied to each panelist's hair after washing, and after thoroughly blending in, it was washed away. Then, each panelist's hair was dried with a dryer and finished.

  In Table 3, the column “purified water” in the column of purified water is 100% by adding the amount of purified water to the total amount of components other than purified water constituting the treatment agent. It means that.

  After washing with shampoo and before applying treatment, each panelist's hair feels the hair on the right half of the head (no squeaking) on the basis of the hair feel (squeaking) on the left half of the head. ) Was evaluated by the expert evaluator. In addition, for each panelist's hair after applying treatment, washing it off, drying it with a dryer, and finishing it with the touch of the left half of the head as the standard, the hair feel of the right half of the head The evaluator evaluated.

Each of the above evaluations was scored in five stages as follows, and the scores of all the evaluators were totaled. These results are shown in Table 4.
Good ... +2.
Somewhat good +1.
Neither ... 0.
Not very good ...- 1.
Not good ... -2.

  In addition, after the treatment agent is applied and washed away, the hair of each panelist after finishing by drying with a dryer is collected, and the conditioning ingredients [cetanol and stearyl alcohol (higher alcohol) and behenyl chloride contained in the treatment agent] The amount of trimethylammonium (cationic surfactant)] attached to the hair was measured by the following method. These results are also shown in Table 4.

  Cetanol, stearyl alcohol and behenyltrimethylammonium chloride adsorbed on each finished hair are extracted with chloroform, gas chromatograms are obtained by gas chromatography, and from the peak areas of each component in these gas chromatograms, The amount of adsorption of these components was determined. The adsorption amount of behenyltrimethylammonium chloride was determined from the sum of the peak area having 20 carbon atoms and the peak area having 22 carbon atoms. In Table 4, the sum (g) of the amount of adsorption of each component determined by the above method was converted to the mass per 1 g of hair (including the mass of the component adhering to the surface) and expressed as a percentage. (%) "Indicates that the larger the value of" adsorption amount ", the more the conditioning components are adsorbed on the hair.

  As is apparent from Table 4, according to the shampoos of Examples 1 to 10 in which the extract of Yukinoshita was blended with fatty acid amidopropyldimethylaminoacetic acid betaine and a cationized polymer, other betaines were substituted for fatty acid amidopropyldimethylaminoacetic acid betaine. Compared to the case of using the shampoo of Comparative Example 1 containing a type amphoteric surfactant and no Yukinoshita extract, the feel of the hair after washing and the feel of the hair after applying the treatment agent and finishing In addition, the conditioning component of the treatment agent is well adsorbed on the hair.

  In the case of using the shampoo of Comparative Example 2 in which another betaine-type amphoteric surfactant is blended in place of the fatty acid amidopropyldimethylaminoacetic acid betaine and the shampoo of Comparative Example 3 in which the amount of the cationized polymer is small, Later hair feel is poor.

Claims (4)

A shampoo containing at least an amphoteric surfactant, an anionic surfactant, and a cationized polymer,
The amphoteric surfactant is fatty acid amidopropyldimethylaminoacetic acid betaine,
The amount of the cationized polymer is 0.3 to 1% by mass,
Yukinoshita extract is further blended,
As the fatty acid amide propyl dimethylamino acetic acid betaine, Lee Sosutearin acid amidopropyl dimethylamino acetic acid betaine are blended,
A shampoo that is used before using treatments containing higher alcohol.   The shampoo according to claim 1, wherein the ratio of the amount of amphoteric surfactant to the amount of anionic surfactant is 1: 3 to 1: 6 in terms of mass ratio.   The shampoo according to claim 1 or 2, wherein a blending amount of the Yukinoshita extract is 0.0001 to 0.1 mass%.   The shampoo according to any one of claims 1 to 3, further comprising an ester of pyrrolidone carboxylic acid and an ethoxylated polyhydric alcohol.