JP5376633B2 - shampoo - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shampoo which gives foam having a good foam quality, and can enhance the touch of hair, after washing the hair. <P>SOLUTION: This shampoo comprises at least an ampholytic surfactant, an anionic surfactant, and a cationized polymer, wherein the ampholytic surfactant is a branched fatty acid amide propyl betaine type ampholytic surfactant, and at least a part of the anionic surfactant is an acylamino acid or its salt. In the shampoo, the mass ratio of the amount of the compounded ampholytic surfactant to the amount of the compounded anionic surfactant is preferably 1:3 to 1:6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a shampoo having good foam quality and capable of enhancing the feel of hair after washing.

  In general, amphoteric surfactants, anionic surfactants, and the like are blended as main ingredients in shampoos (for example, Patent Documents 1 to 5), and various components are blended to improve various properties. Yes.

JP 2002-87941 A JP 2003-342134 A JP 2005-232169 A Special table 2007-518752 gazette

  For example, with shampoos, it is required to suppress the squeak of the hair after washing and to improve the feel thereof. However, pursuing such characteristics clearly shows that the foam quality of shampoo is reduced by the examination of the present inventors. It became.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shampoo that has good foam quality and can enhance the feel of the hair after washing.

  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 branched fatty acid amidopropyl betaine. It is a type amphoteric surfactant, and at least a part of the anionic surfactant is an acylamino acid or a salt thereof.

  According to the present invention, it is possible to provide a shampoo that has good foam quality and can improve the feel of the hair after washing.

  In the shampoo of the present invention, a branched fatty acid amidopropyl betaine type amphoteric surfactant is used as an amphoteric surfactant together with a cationized polymer, and an acylamino acid or a salt thereof is used as at least a part of the anionic surfactant. . In the present invention, in addition to the action of a cationized polymer capable of enhancing the feel of hair, the action of a branched fatty acid amidopropyl betaine type amphoteric surfactant and the action of an acylamino acid or a salt thereof synergistically function, The shampoo is of good quality and can improve the feel of the hair after washing.

  Examples of the branched fatty acid amidopropyl betaine-type amphoteric surfactant used in the shampoo of the present invention include isostearic acid amidopropyldimethylaminoacetic acid betaine, and only one of them may be used. May be used.

  The blending amount of the branched fatty acid amidopropyl betaine type amphoteric surfactant in the shampoo is, for example, preferably 0.5 to 20% by mass. If the amount of the branched fatty acid amidopropyl betaine amphoteric surfactant in the shampoo is too small, the effect of using the branched fatty acid amidopropyl betaine amphoteric surfactant (especially the effect of enhancing the feel of the hair after washing) is reduced. If it is too much, it tends to remain on the hair after washing and cause wrinkling.

  In addition, an amphoteric surfactant other than the branched fatty acid amidopropyl betaine type amphoteric surfactant can be blended with the branched fatty acid amidopropyl betaine type amphoteric surfactant in the shampoo. Examples of amphoteric surfactants other than branched fatty acid amidopropyl betaine type amphoteric surfactants include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, N-coconut oil fatty acid acyl-N-carboxymethoxy. Ethyl-N-carboxymethylethylenediamine disodium, N-coconut oil fatty acid acyl-N-carboxymethyl-N-hydroxyethylethylenediamine sodium, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine, lauric acid amidopropyldimethylaminoacetic acid betaine and the like It is done.

Examples of the acylamino acid or salt thereof used in the shampoo of the present invention include lauroyl aspartic acid, coconut oil fatty acid acylglutamic acid, lauroylglutamic acid, myristoylglutamic acid, stearoylglutamic acid, coconut oil fatty acid methylalanine, lauroylmethylalanine, myristoylmethylalanine, Examples include coconut oil fatty acylglycine , coconut oil fatty acid sarcosine, lauroyl sarcosine, and salts thereof (sodium salt, potassium salt, triethanolamine salt, etc.), and only one of these may be used. Two or more kinds may be used in combination. Among these, sodium lauroyl aspartate is preferable in that it can improve the shampoo foam.

  It is preferable that the compounding quantity of the acylamino acid or its salt in a shampoo is 0.5-10 mass%, for example. If the amount of acylamino acid or its salt in the shampoo is too small, the effect of using the acylamino acid or its salt (especially the effect of improving the foam quality and the effect of improving the feel of the hair after washing) may be too small. And, there is a tendency for the operability to be lowered, for example, the viscosity becomes low and it becomes difficult for the hand to foam.

  In the shampoo of the present invention, the viscosity can be adjusted to an extent that good operability can be secured, and the foaming ability can be further enhanced. It is preferable to use in combination with the salt.

  Examples of anionic surfactants other than acylamino acids or salts thereof include coconut oil fatty acid sodium, coconut oil fatty acid potassium, cocoyl isethionic acid and its salts (sodium salt, potassium salt, etc.), polyoxyethylene lauryl ether acetic acid and Its salt (sodium salt, potassium salt, etc.), disodium alkylsulfosuccinate, lauroyl hydrolyzed silk sodium, isostearic acid hydrolyzed silk AMP (condensation product of isostearic acid and hydrolyzed silk, 2-amino-2-methyl- 1-propanol salt), cocoyl hydrolyzed soy protein potassium, cocoyl hydrolyzed collagen salt (sodium salt, potassium salt, etc.), sodium tetradecene sulfonate, sodium lauryl sulfate, polyoxyethylene lauryl ether sulfate Sodium polyoxyethylene lauryl ether phosphate and salts thereof (sodium salt, potassium salt, etc.) and the like, may be used only one of these may be used in combination of two or more.

  In the shampoo of the present invention, the ratio between the amount of amphoteric surfactant and the amount of anionic surfactant (total amount of anionic surfactant including the amount of acylamino acid or salt thereof) The mass ratio is preferably 1: 3 to 1: 6. 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 a branched fatty acid amidopropyl betaine type amphoteric surfactant is used in combination, the blending amount of the amphoteric surfactant other than the branched fatty acid amidopropyl betaine type amphoteric surfactant is changed to the amphoteric surfactant. The ratio of the total blending amount and the blending amount of the anionic surfactant satisfies the above-mentioned preferred value, and the blending amount of the branched fatty acid amidopropyl betaine type amphoteric surfactant is within the above-mentioned preferred value. Is preferred. In addition, when an anionic surfactant other than acylamino acid or a salt thereof is used in combination, the blending amount of an anionic surfactant other than acylamino acid or a salt thereof is adjusted with the blending amount of an amphoteric surfactant and an anionic surfactant. It is preferable that the ratio with respect to the total amount of the agent satisfies the above preferable value, and the amount of the acylamino acid or a salt thereof satisfies the above preferable value.

  The shampoo of the present invention uses a cationized polymer. This also enhances the feel of the hair after washing with shampoo. Examples of the cationized polymer include cationized cellulose (such as O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride), cationized guar gum, cationized starch, dimethyldiallylammonium chloride / acrylamide copolymer. Examples include coalescence.

  It is preferable that the compounding quantity of the cationized polymer in a shampoo is 0.01-1 mass%, for example. If the amount of the cationized polymer in the shampoo is too small, the effect of using the cationized polymer (effect of improving the feel of the hair after washing) may be reduced. If the amount is too large, it will remain on the hair, There is a tendency for hair to become stiff due to continuous use.

  Moreover, it is preferable to further mix a cationic surfactant with the shampoo of the present invention. By blending a cationic surfactant, the feel of the hair after washing can be further enhanced.

  Examples of the cationic surfactant include monoalkyl type quaternary ammonium salts (lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, lauryl trimethyl ammonium bromide, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide. Dialkyl quaternary ammonium salts (distearyl dimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride, etc.), benzalkonium quaternary ammonium (benzalkonium chloride, stearyl dimethyl benzyl ammonium chloride, etc.) , N-coconut oil fatty acid acyl L-arginine ethyl DL-pyrrolidone carboxylate, etc., and using only one of these Well, it may be used in combination of two or more thereof.

  In addition, when a cationic surfactant is blended in, for example, a colored transparent or colorless transparent shampoo, it tends to cause white turbidity at low temperatures. However, when N-coconut oil fatty acid acyl L-arginine ethyl DL-pyrrolidone carboxylate is used as the cationic surfactant, white turbidity at low temperatures can be satisfactorily suppressed. Therefore, when the shampoo of the present invention is blended with a cationic surfactant and the appearance is colored transparent or colorless and transparent, N-coconut oil fatty acid acyl L-arginine ethyl DL- is added to the cationic surfactant. Pyrrolidone carboxylate is preferably used.

  If the amount of the cationic surfactant in the shampoo is too large, it may be itchy when washing the hair, and therefore it is preferably 0.1% by mass or less. Moreover, from the viewpoint of ensuring a good effect due to the use of the cationic surfactant, the amount of the cationic surfactant in the shampoo is preferably 0.001% by mass or more.

  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 plant extracts for discoloration and oxidation prevention, chelating agents, anti-dandruff agents, fungicides, UV absorption Agents, 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 shown in% so that the total amount of the shampoo is 100%. The% is mass%, and in Tables 1 and 2, The percentage display is omitted, and only the numerical value indicating the blending amount is displayed.

Examples 1-7 and Comparative Examples 1-4
The shampoos of Examples 1 to 7 and Comparative Examples 1 to 4 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.

Moreover, the raw material used for preparation of the shampoo of Examples 1-7 and Comparative Examples 1-4 is as follows.
(1) Amidopropyldimethylaminoacetic acid betaine isostearate: “Obazoline ISAB (trade name)” manufactured by Toho Chemical Industries.
(2) Amidopropyl dimethylaminoacetic acid betaine laurate: “Softazoline LPB (trade name)” manufactured by Kawaken Fine Chemical Co., Ltd.
(3) 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine: “SOFTAZOLINE CH (trade name)” manufactured by Kawaken Fine Chemical Co., Ltd.
(4) Sodium lauroyl aspartate: “Aminoformer FLDS-L (trade name)” manufactured by Asahi Kasei Chemicals Corporation.
(5) Coconut oil fatty acid sodium acylglutamate: “Amino Surfact ACDS-L (trade name)” manufactured by Asahi Kasei Chemicals Corporation.
(6) POE (2) sodium lauryl ether sulfate: “Taipol NLES-227 (trade name)” manufactured by Fluorescent Oil Chemical Co., Ltd.
(7) Sodium cocoyl isethionate: “HOSTAPON SCI 85 G (trade name)” manufactured by Clariant Japan.
(8) POE (3) sodium lauryl ether acetate: “Enagicol EC-30 (trade name)” manufactured by Lion Corporation.
(9) Cationized cellulose: “UCARE Polymer JR-30M (trade name)” manufactured by Union Carbide.
(10) N-coconut oil fatty acid acyl L-arginine ethyl DL-pyrrolidone carboxylate: “CAE (trade name)” manufactured by Ajinomoto Healthy Supply 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 was applied to the left half of the head of each panelist, and 3 g of the shampoo of Examples 1 to 7 or Comparative Examples 2 to 4 was applied to the right half of the head. Apply and wash, then rinse with water. Then, with reference to the foaming of shampoo applied to the hair in the left half of the head (the speed of foaming), the foaming of the shampoo applied to the hair in the right half of the head (the speed of foaming) was evaluated, The feel of the right half hair of the head after washing was evaluated based on the feel of the hair of the left half of the head after washing. In addition, evaluation was performed by scoring in five steps as follows, and totaling the scores of all evaluators. These results are shown in Table 3.
Good ... +2.
Somewhat good +1.
Neither ... 0.
Not very good ...- 1.
Not good ... -2.

  Moreover, about the shampoo of Examples 1-7 and Comparative Examples 1-4, the foaminess was evaluated by the following method. First, 3 g of each shampoo was added to 300 g of hot water, and these were passed through a mixer for 5 seconds to measure the foam heights “immediately” and “after 10 minutes” of the mixer treatment. For each shampoo, subtract “the height of the foam 10 minutes after the mixer treatment” from “the height of the foam immediately after the mixer treatment” to obtain “the height of the foam lost in 10 minutes”. It was. That is, it can be evaluated that the smaller the above value is, the more the foam height does not change between immediately after the mixer treatment and after 10 minutes from the treatment, and the foam has a better feeling. These results are also shown in Table 3. In Table 3, the shampoo of each shampoo (the height of foam lost in 10 minutes) is expressed as “foam lost in 10 minutes” in the shampoo of Comparative Example 1. The value is shown as a relative value when the value of “height” is 100.

  As is apparent from Table 3, the shampoos of Examples 1 to 7 have better foaming and better foaming (foaming speed) than the shampoo of Comparative Example 1 as a standard product. It can be evaluated that the foam quality is good, and the feel of the hair after washing is also good.

  In contrast, Comparative Example 2 in which a linear fatty acid amidopropyl betaine type amphoteric surfactant (amidopropyl dimethylaminoacetic acid laurate) was used as the amphoteric surfactant instead of the branched fatty acid amidopropyl betaine type amphoteric surfactant. In the shampoo, the feel of the hair after washing is inferior. In the shampoo of Comparative Example 3 using a betaine-type amphoteric surfactant different from the branched fatty acid amidopropyl betaine-type amphoteric surfactant, and the shampoo of Comparative Example 3 not using an acylamino acid salt, The speed of foaming is inferior.

Claims (3)

A shampoo containing at least an amphoteric surfactant, an anionic surfactant, and a cationized polymer,
As the amphoteric surfactant, a branched fatty acid amidopropyl betaine type amphoteric surfactant is blended,
As the anionic surfactant, an acylamino acid or a salt thereof and an anionic surfactant other than the acylamino acid and a salt thereof are blended ,
As the acylamino acid or a salt thereof, lauroyl aspartic acid or a salt thereof is blended,
As an anionic surfactant other than the acylamino acid and salts thereof, one or more selected from polyoxyethylene lauryl ether acetic acid, polyoxyethylene lauryl ether sulfuric acid, and salts thereof are blended,
The ratio of the amount of the amount and the anionic surfactant of the amphoteric surfactant, in a weight ratio of 1: 2 to 1: 7 der shampoo characterized Rukoto. 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 , further comprising a cationic surfactant.