JP2009096765A - Composition for hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an excellent composition for hair imparting tensity and stiffness to the hair, without making the hair wiry. <P>SOLUTION: The composition for the hair comprises (A) a vinylmethyl ether-based polymer, (B) a vinylpyrrolidone-based polymer and (C) a fatty acid ester, wherein the ratio of contents of (A) a vinylmethyl ether-based polymer and (B) a vinylpyrrolidone-based polymer, (A)/(B), is 9.0/1 to 1.0/1 in terms of mass ratio. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a composition for hair, and more particularly to an excellent composition for hair that can impart harshness to hair without making the hair stiff.

  In order to improve the fineness of hair and the lack of elasticity, conventionally, for example, a hair-restoring agent and a hair nourishing agent containing a hair-restoring active ingredient have been used. However, the conventional hair restorer and hair nourishing agent have a problem that the hair does not become thick and the effect of giving a sharpness cannot be expected. For this reason, attempts have been made to give hair to hair using a hair spray or a set agent. There was a drawback of being stupid.

  Conventionally, in hair compositions, techniques for imparting harshness to hair and preventing hair from becoming stiff have been studied. For example, amphiphilic polymers, 6-benzylaminopurine and derivatives thereof have been studied. Hair nurturing composition containing at least one (see Patent Document 1): Polyacrylic acid alkali salt, hair fixing polymer, higher alcohol, and oils such as esters and triglycerides, each with a specific content Hair fixative composition (see Patent Document 2); hair fixative polymer containing hair fixative polymer, branched chain fatty acid ester, ethanol and water (see Patent Document 3); Molecular compounds, branched-chain fatty acid esters, and hair cosmetics containing rosin (see Patent Document 4) have been reported.

  However, these conventional techniques do not satisfy the desired degree of elasticity and stiffness at the same time. Therefore, it is possible to impart elasticity to the hair without making the hair stiff. The present condition is still desired for the composition for hair.

JP 2006-213637 A Japanese Patent Laid-Open No. 10-310510 JP-A-4-244010 Japanese Patent Laid-Open No. 1-153609

  An object of the present invention is to solve the conventional problems and achieve the following objects. That is, an object of the present invention is to provide an excellent hair composition that can impart harshness to hair without making the hair stiff.

  As a result of intensive studies to achieve the above object, the present inventors have combined (A) vinyl methyl ether polymer and (B) vinyl pyrrolidone polymer at a specific content ratio. The present invention has found that hair can be imparted with a desired degree of elasticity, and furthermore, by combining (C) fatty acid ester, hair stiffness can be suppressed while maintaining the effect of imparting elasticity, and the present invention is completed. It came to.

The present invention is based on the above findings by the present inventors, and means for solving the above problems are as follows. That is,
<1> (A) a vinyl methyl ether polymer,
(B) a vinylpyrrolidone polymer;
(C) a fatty acid ester, and the content ratio of the (A) vinyl methyl ether polymer to the (B) vinyl pyrrolidone polymer is (A) / (B) = It is a composition for hair characterized by being 9.0 / 1 to 1.0 / 1.
<2> The above <1>, wherein the total content of (A) vinyl methyl ether polymer and (B) vinyl pyrrolidone polymer is (A) + (B) = 0.5 to 15% by mass. It is a composition for hair as described in above.
<3> (C) the fatty acid ester is at least one of isopropyl myristate and isopropyl isostearate, and (A) a vinyl methyl ether polymer with respect to the content of the (C) fatty acid ester, and (B) The total content of the vinylpyrrolidone-based polymer is [(A) + (B)] / (C) = 10 to 100 in terms of mass ratio, and any one of <1> to <2> It is a composition for hair of description.
<4> The hair composition according to any one of <1> to <3>, wherein the pH is 3.0 to 7.0.

  According to the present invention, there is provided an excellent hair composition that can solve the above-mentioned conventional problems, achieve the above-mentioned object, and can impart elasticity to the hair without making the hair stiff. can do.

(Hair composition)
The hair composition of the present invention comprises (A) a vinyl methyl ether polymer, (B) a vinyl pyrrolidone polymer, and (C) a fatty acid ester. It contains.

<(A) Vinyl methyl ether polymer>
The vinyl methyl ether polymer is blended mainly for the purpose of imparting elasticity to the hair.
The vinyl methyl ether polymer is not particularly limited and may be appropriately selected depending on the intended purpose. For example, vinyl methyl ether / butyl maleate copolymer liquid, vinyl methyl ether / ethyl maleate copolymer liquid, etc. Is mentioned. Among these, a vinyl methyl ether / butyl maleate copolymer liquid is preferable in that it is excellent in the effect of imparting elasticity to the hair.

The said vinyl methyl ether type polymer may be used individually by 1 type, and may use 2 or more types together.
There is no restriction | limiting in particular as content of the said vinyl methyl ether type polymer, Although it can select suitably according to the objective, 0.3-12 mass% is preferable in the said composition for hair, 0.7 -4 mass% is more preferable. If the content is less than 0.3% by mass, the desired degree of elasticity may not be imparted to the hair, and if it exceeds 12% by mass, the hair may become stiff. On the other hand, when the content is within a more preferable range, it is advantageous in that a desired degree of elasticity can be imparted to the hair without making the hair stiff.

<(B) Vinylpyrrolidone polymer>
The vinylpyrrolidone-based polymer is mainly blended for the purpose of imparting elasticity to the hair.
The vinyl pyrrolidone polymer is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include vinyl acetate / vinyl pyrrolidone copolymer, polyvinyl pyrrolidone, vinyl pyrrolidone / dimethylaminoethyl methacrylate copolymer. Vinylpyrrolidone / aminopropylmethacrylamide acrylate copolymer, vinylpyrrolidone / hexaden copolymer, eicosene / vinylpyrrolidone copolymer, and the like. Among these, vinyl acetate / vinyl pyrrolidone copolymer and polyvinyl pyrrolidone are preferable in terms of adsorptivity to hair. More preferred is a vinyl acetate / vinyl pyrrolidone copolymer.

Among them, the copolymerization molar ratio of the vinyl acetate / vinyl pyrrolidone copolymer is preferably vinyl acetate (VA) / vinyl pyrrolidone (VP) = 1/100 to 100/1, more preferably 30/70 to 70/30. 40/60 to 50/50 is more preferable. If the copolymer molar ratio is less than 1/100, it may be difficult to adsorb to the hair, and if it exceeds 100/1, the detergency may be deteriorated. On the other hand, it is advantageous that the copolymer molar ratio is within a more preferable range in that the hair is adsorbed to the hair without deteriorating the detergency.
The molar ratio of vinyl acetate (VA) and vinyl pyrrolidone (VP) in the vinyl acetate / vinyl pyrrolidone copolymer can be determined by, for example, 1H NMR method.

The said vinyl pyrrolidone type polymer may be used individually by 1 type, and may use 2 or more types together.
There is no restriction | limiting in particular as content of the said vinylpyrrolidone type polymer | macromolecule, Although it can select suitably according to the objective, 0.1-4 mass% is preferable in the said composition for hair, 0.2- 2 mass% is more preferable. When the content is less than 0.1% by mass, a desired degree of elasticity may not be imparted to the hair, and when it exceeds 4% by mass, the hair may become stiff. On the other hand, when the content is within a more preferable range, it is advantageous in that a desired degree of elasticity can be imparted to the hair without making the hair stiff.

<(A) / (B)>
The content ratio of the (A) vinyl methyl ether polymer to the (B) vinyl pyrrolidone polymer in the hair composition is (A) / (B) = 9. 0.0 / 1 to 1.0 / 1, preferably 7.0 / 1 to 2.0 / 1, and more preferably 5.0 / 1 to 2.0 / 1. When the content of the (A) vinyl methyl ether polymer exceeds 9.0 times by mass with respect to the content of the (B) vinyl pyrrolidone polymer, a desired degree of elasticity is applied to the hair. If the ratio is less than 1.0 times, there is a problem that the hair becomes stiff. On the other hand, when the content ratio is within a more preferable range, it is advantageous in that a desired degree of elasticity can be imparted to the hair without making the hair stiff.

<(A) + (B)>
The total content of the (A) vinyl methyl ether polymer and the (B) vinyl pyrrolidone polymer in the hair composition is (A) + (B) = 0.5-15. % By mass is preferable, 1 to 10% by mass is more preferable, and 1 to 5% by mass is still more preferable. If the total content is less than 0.5% by mass, the desired degree of elasticity may not be imparted to the hair, and if it exceeds 15% by mass, the hair may become stiff. On the other hand, when the total content is within a more preferable range, it is advantageous in that a desired degree of elasticity can be imparted to the hair without making the hair stiff.

<(C) Fatty acid ester>
The fatty acid ester is blended mainly for the purpose of softening the film made of the polymer (the component (A) and the component (B)) and suppressing hair stiffness.
The fatty acid ester is not particularly limited and may be appropriately selected depending on the intended purpose. For example, isopropyl myristate, butyl myristate, myristyl myristate, cetyl myristate, isocetyl myristate, isostearyl myristate, myristine Octyldodecyl acid, ethyl hexyl palmitate, isopropyl palmitate, isostearyl palmitate, cetyl palmitate, isopropyl palmitate, butyl stearate, isocetyl stearate, ethyl hexyl stearate, hexyl laurate, isostearyl laurate, cetyl isooctanoate, Diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, diisostearyl malate, ethyl oleate, hexisostearate Decyl, glyceryl isostearate, diglyceryl isostearate, decaglyceryl isostearate, isopropyl isostearate, lauryl lactate, cetyl lactate, octyldodecyl lactate, cetyl caprylate, and the like cetyl octanoate is. Among these, isopropyl myristate and isopropyl isostearate are preferable because they are excellent in the effect of suppressing hair stiffness.

The said fatty acid ester may be used individually by 1 type, and may use 2 or more types together.
There is no restriction | limiting in particular as content of the said fatty acid ester, Although it can select suitably according to the objective, 0.01-0.2 mass% is preferable in the said composition for hair, 0.03-0 More preferably, it is 2% by mass. If the content is less than 0.01% by mass, the hair may become stiff, and if it exceeds 0.2% by mass, a desired degree of elasticity may not be imparted to the hair. On the other hand, when the content is within a more preferable range, it is advantageous in that a desired degree of elasticity can be imparted to the hair without making the hair stiff.

<[(A) + (B)] / (C)>
The total content of the (A) vinyl methyl ether polymer and the (B) vinyl pyrrolidone polymer with respect to the content of the (C) fatty acid ester in the hair composition is a mass ratio. [(A) + (B)] / (C) = 10 to 100 is preferable, 15 to 80 is more preferable, and 15 to 40 is still more preferable. If the mass ratio is less than 10, it may not be possible to impart a desired degree of elasticity to the hair, and if it exceeds 100, the effect of suppressing hair stiffness may not be obtained. On the other hand, when the mass ratio is within a more preferable range, it is advantageous in that it is excellent in the effect of imparting elasticity to the hair and also in the effect of suppressing the hair stiffness.

<Other ingredients>
The hair composition can contain other components in addition to the components (A) to (C) as long as the effects of the present invention are not impaired. The other components can be appropriately selected according to the purpose from those that can be usually blended in the hair composition. For example, active ingredients for hair restoration, vitamins, hormones, vasodilators, amino acids, Inflammatory agent, skin function enhancer, keratolytic agent, anionic surfactant, cationic surfactant, nonionic surfactant, semipolar surfactant, silicones, polyhydric alcohol, thickener, A fragrance | flavor, a ultraviolet absorber, fine particle powder, an organic acid, antiseptic | preservative, a coloring agent, a pH adjuster, antioxidant, purified water etc. are mentioned.

-Hair growth active ingredient-
The hair-growth active ingredient is not particularly limited and may be appropriately selected depending on the intended purpose.For example, β-glycyrrhetinic acid, cephalanthin, sempri extract, hinokitiol, garlic iodide extract, biotin, allantoin, pyridoxine hydrochloride, dl-α-tocopherol, dl-α-tocopherol acetate, trans-3,4'-dimethyl-3-hydroxyflavanone, adenosine, minoxidil, pentadecanoic acid glyceride, nicotinic acid, nicotinic acid amide, calcium D-pantothenate, D- Pantothenyl alcohol, acetyl pantothenyl ethyl ether, estradiol, ethinyl estradiol, capronium chloride, diphenhydramine hydrochloride, photosensitizer 301, camphor, nonyl acid vanillylamide, nonanoic acid vanillylamide, mono Nitrogua Ayacol, γ-aminobutyric acid, aloe extract, ginkgo biloba extract, urgonum extract, auxin, hypericum extract, seaweed extract, cantalis tincture, clara extract, bovine hematin, ginseng tincture, duke extract, eucalyptus Examples include extracts, Cordyceps extract, 10-hydroxy-Δ2-desanoic acid, hydrocortisone, and placenta extract.

The said hair growth active ingredient may be used individually by 1 type, and may use 2 or more types together.
There is no restriction | limiting in particular as content of the said hair growth active ingredient, Although it can select suitably according to the objective, 0.01-10 mass% is preferable in the said composition for hair, 0.02-3 mass % Is more preferable. When the content is less than 0.01% by mass, a desired degree of hair-growth effect may not be obtained. When the content exceeds 10% by mass, the hair composition may precipitate at a low temperature. May be worse. On the other hand, when the content is within a more preferable range, it is advantageous in that the hair-growth effect is excellent and the stability of the hair composition is also excellent.

<Manufacturing>
There is no restriction | limiting in particular as a manufacturing method of the said composition for hair, According to the objective, it can select suitably, For example, said (A)-(C) component, the said other component, water, and ethanol It can be obtained by mixing at least one of them. More specifically, the components (A) to (C) and the other components are sequentially added into at least one of water and ethanol, and stirred at about room temperature to about 40 ° C. A composition can be obtained. There is no restriction | limiting in particular also as an apparatus used for the said stirring, According to the objective, it can select suitably, For example, a stirring bar, a stirring blade, etc. can be utilized.

<PH>
There is no restriction | limiting in particular in the pH of the said composition for hair, Although it can select suitably according to the objective, 3.0-7.0 are preferable and 4.0-7.0 are more preferable. If the pH is less than 3.0, the hair may become stiff, and if it exceeds 7.0, the scalp may be stimulated. On the other hand, when the pH is within a more preferable range, it is advantageous in that the hair is not stiff and does not irritate the scalp. In addition, the said pH is the value which measured the said hair composition diluted 10 times with purified water at 25 degreeC using the pH meter (Toa DK Corporation; HM-30G).
The pH of the hair composition can be adjusted using, for example, a desired pH adjuster. There is no restriction | limiting in particular as said pH adjuster, Although it can select suitably according to the objective, For example, a citric acid, 2-amino-2-methyl- 1-propanol etc. are suitable.

<Dosage form / container>
There is no restriction | limiting in particular as a dosage form of the said composition for hair, According to the objective, it can select suitably, For example, it can use with various dosage forms, such as a gel, lotion, mist, and aerosol. The various types of compositions for hair can be produced according to conventionally known methods.
Moreover, the said composition for hair can be filled into a normal container. There is no restriction | limiting in particular as said container, According to the objective, it can select suitably, For example, dispenser containers (a pump container, a pump foam container, a pump spray container, etc.), a squeeze container, a laminate film container, a dropper container, a stick A container, a jar container, a bottle container, an aerosol container, etc. are mentioned.

<Use / Effect>
The composition for hair can be applied to any composition used for hair, for example, hair restorer, hair nourishing agent, hair styling agent, shampoo, rinse agent, treatment agent, hair dye, bleach, permanent wave. Suitable for agents, styling agents and the like. Among these, since the composition for hair is excellent in the effect of imparting harshness to the hair without making the hair stiff, it is a hair restorer and a hair nourishing agent. And hair styling agents).

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited to these Examples. In the following Examples and Comparative Examples, unless otherwise specified, “%” represents “mass%” and the ratios represent mass ratios.

(Examples 1-22, Comparative Examples 1-5)
According to the compositions shown in Tables 1 to 4 below, hair compositions of Examples 1 to 22 and Comparative Examples 1 to 5 were prepared by a conventional method. Specifically, the components (A) to (C) and the common component were sequentially added to purified water and ethanol, and the mixture was stirred at 40 ° C. with a stirrer using a hot stirrer. The pH of each hair composition obtained was measured using a pH meter (Toa DKK Corporation; HM-30G) using each hair composition diluted 10 times with purified water (25 ° C.). .
About each obtained composition for hair, the degree of elasticity (hair bundle evaluation), the feeling of tension (use feeling evaluation), and the non-stiffness (use feeling evaluation) were evaluated with the following method. A result is combined with Tables 1-4 and shown.

<Evaluation of elasticity (hair bundle evaluation)>
Each hair composition 0.3 g diluted 3 times with ethanol was applied to a hair bundle of 10 cm and 1 g, then combed 5 times, air-dried and then combed once. When the hair bundle was hung horizontally, the horizontal length was amm, the vertical length was bmm (see FIG. 1), and a / b was the elasticity.
-Evaluation criteria for degree of elasticity-
1.5 or more: There is considerable elasticity.
1.2 to less than 1.5: There is a tension.
0.9 to less than 1.2: There is a little harshness.
Less than 0.9: There is no elasticity.

<Evaluation of harshness and consistency (evaluation of feeling of use)>
Ten panelists tested the use of each hair composition. An appropriate amount of each hair composition was applied to the hair, and the firmness and firmness of the hair immediately after drying were evaluated according to the following evaluation criteria. About the average score of 10 panelists, the sense of firmness and the absence of stiffness were determined according to the following criteria.
The “harminess” means a state where the hair has a certain degree of hardness, and means a property of maintaining the original state even when force is applied to the hair from the outside. The thickness of the hair correlates with the harshness, and when the hair becomes thinner, the harshness is lost. When the hair is thicker, the harshness becomes stronger. If there is a sense of elasticity in the hair, the hairstyle will not collapse, the volume will increase, and it will be easier to maintain the hairstyle. On the other hand, if the harshness is too strong, the hair becomes stiff. Further, “stiffness” refers to a state where the hair is hard and the touch is not smooth. If the stiff hair is bent by applying a conventional spray or set agent, the hair coat will be broken rather than trying to return the hair.
-Evaluation criteria for harshness-
5 points: There is a very harsh feeling.
4 points: There is a lot of harshness.
3 points: There is a sense of elasticity.
2 points: There is a slight harshness.
1 point: There is no harshness.
-Evaluation criteria for non-stiffness-
5 points: I'm not sure.
4 points: Slightly stiff.
3 points: Stiff.
2 points: It is quite stiff.
1 point: Very stiff.
-Judgment criteria for harshness and lack of stiffness-
A: The average score of 10 panelists is 4 or more.
A: The average score of 10 panelists is 3 or more and less than 4 points.
Δ: The average score of 10 panelists is 2 points or more and less than 3 points.
X: The average score of 10 panelists is less than 2 points.

  From the results of Tables 1 to 4, for hair of Examples 1 to 22 containing the components (A) to (C) and the content ratio of the components (A) and (B) is within a certain range. Compared to the hair compositions of Comparative Examples 1 to 5 that do not satisfy at least one of the above-mentioned requirements, the composition is an excellent hair composition that can impart harshness to hair without making the hair stiff It turned out to be a thing.

(Example 23: Hair growth spray)
A hair growth spray having the following composition was prepared by a conventional method.
(Stock solution composition) (mass%)
Vinyl methyl ether / butyl maleate copolymer solution 3.0
Vinyl acetate / vinyl pyrrolidone copolymer (VA / VP = 4: 6) 0.6
Isopropyl myristate 0.1
Dl-α-tocopherol acetate 0.1
Piroctone olamine 0.1
Minoxidil 1.0
Polyethylene glycol 300 0.1
Citric acid appropriate amount (pH 4.0)
l-Menthol 0.3
Ethanol 75.0
Fragrance * 1 0.5
Purified water balance
Total 100.0
(Filling liquid for dilution)
Stock solution 70.0
Dimethyl ether 30.0
Total 100.0
Fragrance * 1: A composition in Table 2 described in JP-A No. 2003-113019

(Example 24: Aerosol foam for hairdressing)
An aerosol foam for hairdressing having the composition shown below was prepared by a conventional method.
(Stock solution composition) (mass%)
Vinyl methyl ether / butyl maleate copolymer solution 0.8
Vinyl acetate / vinyl pyrrolidone copolymer (VA / VP = 5: 5) 0.2
Isopropyl isostearate 0.05
Cationized cellulose 0.1
Palm oil fatty acid diethanolamide 0.3
N-coconut oil fatty acid acyl-sodium L-glutamate 0.05
POE stearyl ether (30EO) 0.3
Coleus extract 0.5
2-amino-2-methyl-1-propanol appropriate amount (pH 6.0)
Methyl paraoxybenzoate 0.05
Ethanol 20.0
Fragrance * 2 0.5
Purified water balance
Total 100.0
(Filling liquid for dilution)
Stock solution 80.0
Liquefied petroleum gas 20.0
Total 100.0
Fragrance * 2: B composition in Table 2 described in JP-A No. 2003-113019

(Example 25: Gel for hairdressing)
A hair styling gel having the following composition was prepared by a conventional method.
(Stock solution composition) (mass%)
Vinyl methyl ether / ethyl maleate copolymer solution 0.75
Polyvinylpyrrolidone 0.15
Isopropyl isostearate 0.06
Carboxyvinyl polymer 0.5
Concentrated glycerin 10.0
Dihydroxybenzophenone 0.1
Methyl paraoxybenzoate 0.1
Sodium bisulfite 0.1
l-Menthol 0.05
Nicotinamide 0.2
2-amino-2-methyl-1-propanol appropriate amount (pH 7.0)
Ethanol 20.0
Fragrance * 3 0.5
Purified water balance
Total 100.0
Fragrance * 3: C composition in Table 2 described in JP-A No. 2003-113019

(Example 26: Hair growth tonic)
A hair growth tonic having the composition shown below was prepared by a conventional method.
(Stock solution composition) (mass%)
Vinyl methyl ether / butyl maleate copolymer solution 3.0
Vinyl acetate / vinyl pyrrolidone copolymer (VA / VP = 7: 3) 1.5
Isopropyl myristate 0.12
Minoxidil 1.0
Nicotinamide 0.3
Concentrated glycerin 0.1
Polyoxyethylene stearyl ether (20EO) 2.0
l-Menthol 0.2
Dibutylhydroxytoluene 0.01
2-Amino-2-methyl-1-propanol appropriate amount (pH 5.0)
Ethanol 75.0
Fragrance * 4 0.5
Purified water balance
Total 100.0
Fragrance * 4: D composition in Table 2 described in JP-A No. 2003-113019

  Each evaluation was performed similarly to the above about the composition for hair of Examples 23-26. The results are shown in Table 5. It turned out that the composition for hair of Examples 23-26 is the composition for hair excellent which can give a harshness to hair, without making hair stiff.

  In addition, the detail of each component used by the said Example and comparative example is as follows.

  Since the composition for hair is excellent in the effect of imparting elasticity to the hair without making the hair stiff, it is a hair-restoring agent and a hair nourishing agent, and in particular, a hair-restoring agent and a hair nourishing agent having a hair-styling function (hair-dressing hair-restoring agent, hair-styling hair nourishing agent). Particularly suitable.

FIG. 1 is a diagram showing a method for measuring the elasticity in this embodiment. When the hair bundle to which each hair composition was applied was horizontally hung, the horizontal length was amm, the vertical length was bmm, and a / b was the degree of elasticity.

Claims (4)

(A) a vinyl methyl ether polymer;
(B) a vinylpyrrolidone polymer;
(C) a fatty acid ester, and the content ratio of the (A) vinyl methyl ether polymer to the (B) vinyl pyrrolidone polymer is (A) / (B) = The composition for hair characterized by being 9.0 / 1 to 1.0 / 1.   The hair according to claim 1, wherein the total content of (A) vinyl methyl ether polymer and (B) vinyl pyrrolidone polymer is (A) + (B) = 0.5 to 15% by mass. Composition.   (C) The fatty acid ester is at least one of isopropyl myristate and isopropyl isostearate, and (A) a vinyl methyl ether polymer and (B) with respect to the content of the (C) fatty acid ester. 3. The hair composition according to claim 1, wherein the total content of the vinylpyrrolidone polymer is [(A) + (B)] / (C) = 10 to 100 in terms of mass ratio. .   The composition for hair according to any one of claims 1 to 3, wherein the pH is 3.0 to 7.0.