JP4898041B2 - Pack cosmetic - Google Patents

Description

【００２５】
【表２】

【００２６】
（製法）
成分１〜１８を常温で均一に混合する。
【００２７】
（評価方法）
専門パネル１０名に、（１）使用性（使い易さ）、（２）使用感（保湿感）について、下記（ａ）評価基準にて５段階評価し、更に各試料の評点の平均値を（ｂ）４段階判定基準を用いて判定した。
【００２８】
（ａ）５段階評価基準
（評点） （評価）
４ ： 非常に良い（ある）
３ ： 良い（ある）
２ ： 変わらない
１ ： やや悪い（ない）
０ ： 悪い（ない）
（ｂ）４段階判定基準
（評点の平均値） ：（判定）
３．０以上 ： ◎
２．０以上、３．０未満 ： ○
１．０以上、２．０未満 ： △
１．０未満 ： ×
【００２９】
表１及び表２の結果から明らかなように、本発明に係わる実施例１〜７は、使用性（使い易さ）、使用感（保湿感）に優れたパック化粧料であった。
【００３０】

【００３１】
（製法）
Ａ：成分（１）〜（３）を均一に混合する。
Ｂ：成分（４）〜（１１）を均一に混合する。
Ｃ：ＢにＡを加え均一に混合し、透明保湿パック料を得た。
【００３２】
実施例８で得られた透明保湿パック料は、使用性に優れ使い易く、使用後の保湿感に優れ、更に外観が透明である優れたパック化粧料であった。
【００３３】

【００３４】
（製法）
Ａ：成分（１）〜（４）を均一に混合する。
Ｂ：成分（５）〜（１２）を均一に混合する。
Ｃ：ＢにＡを加え均一に混合し、透明保湿パック料を得た。
【００３５】
実施例９で得られた透明保湿パック料は、使用性に優れ使い易く、使用後の保湿感に優れ、更に外観が透明である優れたパック化粧料であった。
【００３６】
【発明の効果】
以上述べたように、本発明のパック化粧料は、使用性（使い易さ）、使用感（保湿効果）に優れたものであり、パック化粧料として優れた品質を有するものであった。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pack cosmetic having excellent usability and usability even when a moisturizing salt or a water-soluble polyhydric alcohol is blended by blending a specific alkali-soluble emulsion polymer thickener. .
[0002]
[Prior art]
Conventionally, pack cosmetics containing a large amount of moisturizing ingredients have been used to supply sufficient moisturizing ingredients to the skin. In addition, as a method of using the pack cosmetic, it has been used after being applied to the skin and then removed or used as it is. Such a pack cosmetic needs to be left on the skin for a certain period of time in order to infiltrate the moisturizing agent. For this reason, water-soluble polymers are often blended so that they do not flow or fall off on the skin.
[0003]
[Problems to be solved by the invention]
However, water-soluble polyhydric alcohols, saccharides, highly moisturizing salts, amino acids and their derivatives that are generally used as moisturizing agents in pack cosmetics have a strong effect on the water-based state. In some cases, the function and usability of the pack cosmetic may be impaired, such as greatly changing the properties of the conductive polymer and lowering the viscosity. In addition, increasing the amount of the water-soluble polymer in order to increase the viscosity adversely affects usability and feel, such as increased elongation during use and stickiness due to the water-soluble polymer after use.
On the other hand, the transparency of the appearance is also an important factor for bringing a refreshing feeling and freshness to the cosmetics. In particular, when such an appearance is embodied in a cosmetic containing a large amount of a moisturizing agent such as a water-soluble polyhydric alcohol, saccharides, highly moisturizing salts, amino acids and water-soluble derivatives thereof, Aggregation occurred and the appearance was often turbid.
Therefore, while containing many humectants such as water-soluble polyhydric alcohol, saccharides and highly moisturizing salts, amino acids and derivatives thereof, the spread to the skin is good, the usability such as adhesion to the skin is excellent, and There has been a demand for the development of pack cosmetics with high moisturizing properties and excellent use feeling.
[0004]
[Means for Solving the Problems]
In view of such circumstances, the present inventors have conducted extensive studies to overcome the above-mentioned drawbacks. As a result, alkali-soluble emulsion polymer thickeners, moisturizing salts and / or amino acids, and water-soluble derivatives thereof. And the water-soluble polyhydric alcohol humectant in combination to find that the above-mentioned problems can be solved, and the present invention has been completed based on this finding.
[0005]
That is, the present invention relates to an alkali-soluble emulsion polymer thickener, a moisturizing salt and / or amino acid and a water-soluble derivative thereof, and a water-soluble polyhydric alcohol-based moisturizing agent having two or more hydroxyl groups in the molecule. It is a pack cosmetic containing an agent as an essential component.
Furthermore, in the pack cosmetic described above, the alkali-soluble emulsion polymer thickener is a copolymer of the following (A), (B), (C).
(A) Acrylic acid and / or methacrylic acid (B) Acrylic acid alkyl ester and / or methacrylic acid alkyl ester selected from one or more (C) Polyoxyalkylene monoalkyl ether and acrylic acid ester, or Polyoxyalkylene monoalkyl ether and methacrylic acid ester More preferably, the blending ratio of the alkali-soluble polymer thickener and the moisturizing salts and / or amino acids and water-soluble derivatives thereof is 1 as the mass ratio of the solid content. It is a pack cosmetic that is / 10 to 50/1.
More preferably, it is a pack cosmetic characterized by having a transparent appearance.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The configuration of the present invention will be described below.
The alkali-soluble emulsion polymer thickener used in the present invention imparts excellent usability with little change in viscosity even when a large amount of moisturizing salt or water-soluble polyhydric alcohol is blended in pack cosmetics. In addition, it is an essential component for giving a more transparent appearance.
[0007]
The alkali-soluble emulsion polymer thickener used in the present invention itself is a low-viscosity polymer aqueous dispersion and is a cloudy to slightly cloudy liquid called a polymer emulsion. This is thickened by the addition of an alkaline agent and changes to transparent. The alkali-soluble emulsion polymer thickener used in the present invention can be used without particular limitation as long as it becomes transparent and thickens by addition of an alkali agent as described above. , A polymer emulsion containing a copolymer of acrylic acid and alkyl acrylate ester as a polymer, a polymer emulsion containing a copolymer of acrylic acid and alkyl methacrylate as a polymer, acrylic acid, alkyl acrylate and alkyl methacrylate A polymer emulsion containing a copolymer of an ester copolymer, a polymer emulsion containing a copolymer of acrylic acid, methacrylic acid and an alkyl acrylate ester as a polymer, a copolymer of acrylic acid, an alkyl acrylate and a polyethylene glycol acrylate Polymer Polymer emulsion containing polymer, polymer emulsion containing acrylic acid, alkyl methacrylate ester and acrylic acid (polyoxyethylene monoalkyl ether) ester, acrylic acid, alkyl methacrylate and methacrylic acid (poly A polymer emulsion containing a copolymer of oxyethylene monoalkyl ether) ester as a polymer, a polymer emulsion containing a copolymer of itaconic acid, alkyl acrylate ester and methacrylic acid (polyoxyethylene monoalkyl ether) ester as a polymer, Examples include polymer emulsions containing a copolymer of acrylic acid, alkyl acrylate and itaconic acid (polyoxyethylene monoalkyl ether) ester. The present invention may be used alone or in combination.
[0008]
Among these, in order to obtain more excellent usability and transparent appearance, which are the effects of the present invention, the alkali-soluble emulsion polymer thickener uses the following three-component copolymer as a polymer component. A polymer emulsion is preferred.
(A) Acrylic acid and / or methacrylic acid (B) Acrylic acid alkyl ester and / or methacrylic acid alkyl ester selected from one or more (C) Polyoxyalkylene monoalkyl ether and acrylic acid ester, or Polyoxyalkylene monoalkyl ether and ester of methacrylic acid
The copolymer obtained by copolymerizing the above three components is an acrylate / ceteth-20 methacrylate copolymer (ACRYLATES / CETETH-20 METHACRYLATE COPOLYMER) listed in ICID (International Cosmetic Ingredient Dictionary). 50 Acrylate Copolymer (ACRYLATES / STEARTH-50 ACRYLATE COPOLYMER), Acrylate / Stealess-20 Methacrylate Copolymer (ACRYLATES / STEARETH-20 METHACRYLATE COPOLYMER), Acrylate / Beneness-25 Methacrylate Copolymer (BCRYLATEH / TH CRYLATE COPOLYMER) is exemplified, and in the form of a polymer emulsion, commercially available products such as Aculin 22 and Aculin 28 (both manufactured by Rohm & Haas Co., Ltd.) are specifically exemplified and can be suitably used for the product of the present invention.
Moreover, although it is not a copolymer of said (A), (B), (C), the acrylate / steareth-20 itaconic acid copolymer (ACRYLATES / STEARETTH-20 ITACONATE COPOLYMER) of ICID (International Cosmetic Ingredient Dictionary) is included. Copolymers such as acrylate / ceteth-20 itaconic acid copolymer (ACRYLATES / CETETH-20 ITACONATE COPOLYMER) are also preferable as the alkali-soluble emulsion polymer thickener of the present invention. As such a copolymer, in the form of a polymer emulsion, a commercially available product such as STRUCTURE 3001 (manufactured by National Starch Co., Ltd.) is specifically exemplified and can be suitably used for the product of the present invention.
[0010]
The solid content of the alkali-soluble emulsion polymer thickener used in the present invention is not particularly limited, but is preferably 0.1 to 3% by mass (hereinafter simply referred to as “%”).
[0011]
Further, the alkali-soluble emulsion polymer thickener is adjusted to pH 7 or more by adding an inorganic basic substance such as sodium hydroxide or potassium hydroxide or an organic basic substance such as triethanolamine, isopropanolamine or arginine. The viscosity can be increased.
[0012]
The moisturizing salts and / or amino acids and water-soluble derivatives thereof used in the present invention are essential components for imparting an excellent moisturizing effect. Further, when used in combination with a water-soluble polyhydric alcohol humectant having two or more hydroxyl groups in the molecule, the moisturizing effect is synergistically improved.
[0013]
The moisturizing salts used in the present invention are not particularly limited, but specific examples include hydroxyacetic acid, lactic acid, β-hydroxypropionic acid, α-hydroxybutyric acid, α-hydroxyisobutyric acid, α-hydroxyisocaproic acid. , Oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, fumaric acid, maleic acid, malic acid, tartronic acid, citric acid, tartaric acid, sodium salt of pyrrolidone carboxylic acid, A potassium salt, a triethanolamine salt, an ammonium salt, etc. are mentioned. These may be used alone or in combination of two or more as required.
Among these, sodium lactate, sodium pyrrolidone carboxylate, sodium malate, and sodium citrate are preferable in order to obtain better moisture retention.
[0014]
The amino acids and their water-soluble derivatives used in the present invention are not particularly limited, but specific examples include glycine, alanine, valine, leucine, isoleucine, phenylalanine, tyrosine, threonine, serine, proline, hydroxyproline, tryptophan, Examples include amino acids such as thyroxine, methionine, cystine, cysteine, aspartic acid, glutamic acid, asparagine, glutamine, lysine, arginine, histidine, and water-soluble derivatives of amino acids such as trimethylglycine and N-acetyl-glutamic acid. These may be used alone or in combination of two or more as required.
Among these, serine, trimethylglycine, and N-acetyl-glutamic acid are preferable in order to obtain better moisture retention.
[0015]
The compounding amount of the moisturizing salts and / or amino acids and water-soluble derivatives thereof used in the present invention is not particularly limited, but is preferably 0.01 to 10%.
[0016]
The water-soluble polyhydric alcohol humectant having two or more hydroxyl groups in the molecule used in the present invention is an essential component for imparting an excellent moisturizing effect. In addition, the moisturizing effect is synergistically improved when used in combination with moisturizing salts and / or amino acids and water-soluble derivatives thereof.
[0017]
The water-soluble polyhydric alcohol humectant used in the present invention is not limited as long as it has two or more hydroxyl groups in the molecule. Specifically, polypropylene glycol such as propylene glycol, dipropylene glycol, tripropylene glycol, Butylene glycol such as 3-butylene glycol and 1,4-butylene glycol, pentanediol such as 1,2-pentanediol and 1,3-pentanediol, and glycerin Polyglycerol such as glycerol, triglycerol, tetraglycerol, maltose, maltitol, sucrose, fructose, mannitol, xylitol, sorbitol, maltotriose, slate, erythritol, polyethylene glycol, polyoxya Such as glucose derivatives such as sharp emission alkyl glycosides and the like. These may be used alone or in combination of two or more as required.
Among these, glycerin, 1,3-butylene glycol, dipropylene glycol, sorbitol, mannitol, and polyoxyethylene methyl glucoside are preferable in order to obtain better moisture retention.
[0018]
Although the compounding quantity of the water-soluble polyhydric alcohol type moisturizer which has a 2 or more hydroxyl group in the molecule | numerator used for this invention is not specifically limited, Preferably, it is 1 to 30%.
[0019]
Furthermore, in order to obtain better usability and moisturizing effect, the blending ratio of the alkali-soluble polymer thickener and the moisturizing salts and / or amino acids and water-soluble derivatives thereof is the mass ratio of the solid content. It is preferable that it is 1/10 to 50/1. More preferably, it is 1/2 to 20/1.
[0020]
Moreover, it is preferable that the external appearance of the pack cosmetic of this invention is transparent from the objective of giving a refreshing feeling, freshness, etc. Here, the transparent appearance indicates that the transmittance at a wavelength of 600 nm is 70% or more. (Measured with a spectrophotometer and the transmittance of purified water is 100%)
[0021]
In addition to the above-mentioned essential components, the pack cosmetic of the present invention may optionally contain surfactants, oils, polymers other than those described above, powders, water, preservatives, colorants, refreshing agents, and stabilization. Agents, alcohols, drugs, fragrances and the like can be added as appropriate.
[0022]
【Example】
The following examples further illustrate the present invention. In addition, these do not limit this invention at all.
[0023]
Examples 1 to 7 and Comparative Examples 1 to 5: Packed cosmetics were prepared according to the compositions shown in Tables 1 and 2 and the following production method. The obtained cosmetic packs were evaluated for (1) usability (ease of use) and (2) usability (moisturizing feeling) by the following methods, and the results are shown in Tables 1 and 2.
[0024]
[Table 1]

[0025]
[Table 2]

[0026]
(Manufacturing method)
Ingredients 1-18 are mixed uniformly at room temperature.
[0027]
(Evaluation methods)
Ten professional panelists evaluated (1) usability (ease of use), (2) usability (moisturizing feeling) on the basis of the following (a) evaluation criteria, and evaluated the average score of each sample. (B) Judgment was made using a four-step criterion.
[0028]
(A) Five-level evaluation criteria (score) (Evaluation)
4: Very good (yes)
3: Good (yes)
2: No change 1: Somewhat bad (not)
0: Bad (not)
(B) Four-step criteria (average score): (Judgment)
3.0 or more: ◎
2.0 or more and less than 3.0: ○
1.0 or more and less than 2.0: △
Less than 1.0: ×
[0029]
As is apparent from the results of Tables 1 and 2, Examples 1 to 7 according to the present invention were pack cosmetics excellent in usability (ease of use) and usability (moisturizing feeling).
[0030]

[0031]
(Manufacturing method)
A: Components (1) to (3) are mixed uniformly.
B: Components (4) to (11) are mixed uniformly.
C: A was added to B and mixed uniformly to obtain a transparent moisturizing pack.
[0032]
The transparent moisturizing pack obtained in Example 8 was an excellent pack cosmetic that was excellent in usability, easy to use, excellent in moisturizing feeling after use, and transparent in appearance.
[0033]

[0034]
(Manufacturing method)
A: Components (1) to (4) are mixed uniformly.
B: Components (5) to (12) are mixed uniformly.
C: A was added to B and mixed uniformly to obtain a transparent moisturizing pack.
[0035]
The transparent moisturizing pack obtained in Example 9 was an excellent pack cosmetic that was excellent in usability, easy to use, excellent in moisturizing feeling after use, and transparent in appearance.
[0036]
【Effect of the invention】
As described above, the pack cosmetic of the present invention has excellent usability (ease of use) and usability (moisturizing effect), and has excellent quality as a pack cosmetic.

Claims (3)

Acrylates / Steareth-20 Methacrylate Copolymer (INCI name: Acrylates / Beheneth-25 Methacrylate Copolymer), and Acrylates / Beheneth-25 Methacrylate Copolymer (INCI name: Acrylates / Stheneth-25 Methacrylate Copolymer) An alkali-soluble emulsion polymer thickener selected from copolymers (INCI name: Acrylates / Ceteth-20 Itaconate Copolymer), sodium lactate, sodium pyrrolidonecarboxylate, sodium malate, sodium citrate, serine, trimethylglycine, 2 or more in a molecule selected from humectant salts and / or amino acids selected from N-acetyl-glutamic acid and glycerin, 1,3-butylene glycol, polyoxyethylene methyl glucoside, polyethylene glycol and mannitol of A pack cosmetic comprising a water-soluble polyhydric alcohol humectant having a hydroxyl group and an alkali agent (provided that the first composition comprises the following first composition and second composition, and the first composition) Except for pack agents, which solidify non-evaporated by the addition of the second composition;
First composition: External composition containing a polymer emulsion obtained by emulsion polymerization Second composition: External composition containing an electrolyte. )
A pack cosmetic containing 0.1 to 3% by mass of the alkali-soluble emulsion polymer thickener as a solid content . The pack according to claim 1, wherein the blending ratio of the alkali-soluble polymer thickener and the moisturizing salts and / or amino acids and water-soluble derivatives thereof is 1/10 to 50/1 as a mass ratio of the solid content. Cosmetics. The pack cosmetic according to claim 1 or 2 , wherein the appearance is transparent.