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JP2008174528A - Makeup cosmetic - Google Patents

Makeup cosmetic Download PDF

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Publication number
JP2008174528A
JP2008174528A JP2007011984A JP2007011984A JP2008174528A JP 2008174528 A JP2008174528 A JP 2008174528A JP 2007011984 A JP2007011984 A JP 2007011984A JP 2007011984 A JP2007011984 A JP 2007011984A JP 2008174528 A JP2008174528 A JP 2008174528A
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Prior art keywords
powder
copolymer
treated
alkyl
skin surface
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JP2007011984A
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Japanese (ja)
Inventor
Masaharu Ohashi
正春 大橋
Yasuki Sunakawa
靖喜 砂川
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Naris Cosmetics Co Ltd
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Naris Cosmetics Co Ltd
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Priority to JP2007011984A priority Critical patent/JP2008174528A/en
Publication of JP2008174528A publication Critical patent/JP2008174528A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a new and safe makeup cosmetic having a pH modulatory activity in skin surface. <P>SOLUTION: The makeup cosmetic is a combination of a copolymer of an alkyl methacrylate and (meth)acrylic acid, or a powder treated with the copolymer of the alkyl methacrylate and (meth)acrylic acid modulating pH in skin surface into weakly acidic, wherein the powder to be treated is selected from a group consisting of talc, kaolin, mica, bentonite, silicic anhydride, magnesium silicate, titanium oxide, titanated mica, zinc oxide, an alkyl polyacrylate, nylon and crystalline cellulose. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、メタクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体あるいはアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体で表面処理した粉体を含有することを特徴とし、皮膚表面のpHを弱酸性に調節する機能を有するメーキャップ化粧料に関する。 The present invention comprises a powder surface-treated with a copolymer of alkyl methacrylate and methacrylic acid or acrylic acid, or a surface treatment with a copolymer of alkyl acrylate and methacrylic acid or acrylic acid. The present invention relates to a makeup cosmetic having a function of adjusting pH to weak acidity.

健常皮膚表面のpHは通常5〜7の弱酸性を維持している。このpH環境は病原性の細菌、ウィルス、真菌などの発育を阻止するのを助けている。また、角層剥離に関連する酵素などの活性に適したpHでもあり、表皮の新陳代謝など皮膚のホメオスタシスにも大きく関係している。また、皮膚表面のpHはアトピー性皮膚炎、脂漏性皮膚炎などの皮膚疾患に代表されるように皮膚状態に影響され、高値を示すことがある。このように、皮膚表面のpHバランスを弱酸性に維持することは非常に重要である。 The pH of the healthy skin surface is usually maintained at 5-7 weak acidity. This pH environment helps to prevent the development of pathogenic bacteria, viruses and fungi. It is also a pH suitable for the activity of enzymes related to stratum corneum peeling, and is greatly related to skin homeostasis such as epidermal metabolism. Further, the pH of the skin surface is affected by the skin condition as represented by skin diseases such as atopic dermatitis and seborrheic dermatitis, and may show a high value. Thus, it is very important to maintain the pH balance of the skin surface to be weakly acidic.

そして、皮膚表面のpHを弱酸性にする機能を有した化粧料は、従来、洗顔料、化粧水、乳液及びクリーム等のスキンケア化粧料(下記特許文献1及び2参照)に多くみられるが、メーキャップ化粧料自体が皮膚表面のpHを弱酸性にする機能を有したメーキャップ化粧料は存在しない。 And, cosmetics having a function of making the pH of the skin surface weakly acidic have been frequently found in skin care cosmetics such as facial cleansers, lotions, emulsions and creams (see Patent Documents 1 and 2 below). There is no makeup cosmetic that has the function of making the pH of the skin surface weakly acidic.

メーキャップ化粧料は、乾燥状態では皮膚表面のpHに影響しないが、タルクなど粉体の中にはアルカリ性であるものもあり、高湿度環境や発汗などにより皮膚表面のpHに影響することがある。また、汗のpHは5〜7であるが、発汗速度が上昇するとそれに比例してpHは上昇し8以上にもなる。 Makeup cosmetics do not affect the pH of the skin surface in a dry state, but some powders such as talc are alkaline, and may affect the pH of the skin surface due to high humidity environments and sweating. Moreover, although the pH of sweat is 5-7, when the perspiration rate increases, the pH increases in proportion to 8 or more.

そこで、メーキャップ化粧料に配合する粉体を弱酸性溶液にて処理して配合したもの等(下記特許文献3参照)が存在するが、皮膚表面のpHを弱酸性にするまでの機能は有していない。
特開2004−137171号公報 特開平11−349428号広報 特公平6−99281号公報
Thus, there are powders blended in makeup cosmetics treated with a weakly acidic solution (see Patent Document 3 below), etc., but have a function to make the pH of the skin surface weakly acidic. Not.
JP 2004-137171 A JP 11-349428 Japanese Patent Publication No. 6-99281

本発明の課題は、皮膚表面のpHを弱酸性に調節する機能を有した安全性の高いメーキャップ化粧料を提供することを課題とする。 The subject of this invention makes it a subject to provide the makeup cosmetics with high safety | security which has the function to adjust pH of skin surface to weak acidity.

上記の課題である皮膚表面のpHを弱酸性に調節する機能を有した安全性の高いメーキャップ化粧料を開発すべく検討を行った結果、プロトン放出性のポリマーであるメタクリル酸アルキルあるいはアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体で処理した粉体が皮膚表面のpHを弱酸性にすることを見出した。さらに、この処理粉体は酸性状態では作用せず、中性からアルカリ性でのみ作用し、皮膚表面のpH調節性に働くことを見出し、本発明を完成するに至った。即ち、メタクリル酸アルキルあるいはアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体で処理した粉体を配合することで、皮膚表面のpHを弱酸性に調節するメーキャップ化粧料の提供を可能とした。 As a result of studies to develop a highly safe makeup cosmetic that has the function of adjusting the pH of the skin surface, which is the above-mentioned problem, to weak acidity, the proton-releasing polymer is alkyl methacrylate or alkyl acrylate. It was found that the powder treated with a copolymer of methacrylic acid and acrylic acid makes the pH of the skin surface weakly acidic. Furthermore, it has been found that this treated powder does not act in an acidic state, acts only from neutral to alkaline, and acts on the pH control of the skin surface, and the present invention has been completed. That is, it is possible to provide a makeup cosmetic that adjusts the pH of the skin surface to a weak acidity by blending a powder treated with an alkyl methacrylate or an alkyl acrylate and a copolymer of methacrylic acid or acrylic acid. .

メタクリル酸アルキルあるいはアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体で処理した粉体を配合することで、皮膚表面のpHを弱酸性にするメーキャップ化粧料が得られる。さらに、メタクリル酸アルキルあるいはアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体で処理した粉体は酸性状態では作用せず、中性からアルカリ性でのみ作用するのでpH調節性のメーキャップ化粧料が得られる。そして、皮膚表面のpH調節機能を有するメーキャップ化粧料は皮膚表面に最適なpH環境を提供でき、病原性の細菌、ウィルス、真菌などの発育阻止を助け、表皮の新陳代謝の遅れなど皮膚状態が乱れるのを防ぐ効果を有する。 A makeup cosmetic that makes the pH of the skin surface weakly acidic can be obtained by blending powder treated with an alkyl methacrylate or a copolymer of alkyl acrylate and methacrylic acid or acrylic acid. In addition, powders treated with alkyl methacrylate or a copolymer of alkyl acrylate and methacrylic acid or acrylic acid do not act in an acidic state, but act only from neutral to alkaline, so that a pH-adjustable makeup cosmetic can be obtained. can get. And makeup cosmetics with pH control function on the skin surface can provide the optimal pH environment on the skin surface, helping to prevent the growth of pathogenic bacteria, viruses, fungi, etc., and disturbing the skin condition such as delaying epidermal metabolism Has the effect of preventing

本発明に用いることができるメタクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体およびアクリル酸アルキルとメタクリル酸あるいはアクリル酸との共重合体は、市販されているものであれば特に制限は無い。又、処理されるタルク、カオリン、マイカ、ベントナイト、無水ケイ酸、ケイ酸マグネシウム、酸化チタン、雲母チタン、酸化亜鉛、ポリアクリル酸アルキル、ナイロン、結晶セルロース等の粉体も、市販されているものであれば特に制限は無い。本発明で粉体の表面処理に使われる共重合体の粉に対する割合は好ましくは10%〜25%の範囲である。粉体の処理方法として、エタノール等の溶媒に共重合体を溶かして処理する湿式処理法などがあるが、これに限られるものではない。処理粉体の配合量に制限はなく、好ましくは10%以上である。これらの範囲で配合すると、より適確に肌のpHを弱酸性に調節する作用が得られる。 The copolymer of alkyl methacrylate and methacrylic acid or acrylic acid and the copolymer of alkyl acrylate and methacrylic acid or acrylic acid that can be used in the present invention are not particularly limited as long as they are commercially available. . In addition, powders such as talc, kaolin, mica, bentonite, silicic anhydride, magnesium silicate, titanium oxide, titanium mica, zinc oxide, alkyl polyacrylate, nylon, crystalline cellulose to be treated are also commercially available. If there is no particular limitation. In the present invention, the ratio of the copolymer used for the surface treatment of the powder to the powder is preferably in the range of 10% to 25%. Examples of the powder processing method include, but are not limited to, a wet processing method in which a copolymer is dissolved in a solvent such as ethanol. There is no restriction | limiting in the compounding quantity of a processing powder, Preferably it is 10% or more. When blended within these ranges, the effect of adjusting the pH of the skin to slightly acidic can be obtained more accurately.

以下、実施例を挙げて、本発明を具体的に説明するが、本発明は何ら実施例に限局されるものではない。 EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to an Example at all.

処理粉体1:メタクリル酸メチルとメタクリル酸との1:1共重合体で表面処理したタルク。処理粉体2:メタクリル酸メチルとメタクリル酸との2:1共重合体で表面処理したタルク。未処理粉体:未処理タルク。 Treated powder 1: Talc surface-treated with a 1: 1 copolymer of methyl methacrylate and methacrylic acid. Treated powder 2: Talc surface-treated with a 2: 1 copolymer of methyl methacrylate and methacrylic acid. Untreated powder: Untreated talc.

(処理方法)
いずれの共重合体での処理も次のように行った。200mlのエタノールに重合体10gを溶かし、それにタルク100gを加えてよく攪拌した後、エタノールを除去し、乾燥させて粉砕したものを処理粉体として用いた。
(Processing method)
The treatment with any copolymer was performed as follows. 10 g of the polymer was dissolved in 200 ml of ethanol, 100 g of talc was added thereto and stirred well, and then the ethanol was removed, dried and pulverized, and used as the treated powder.

(試験例1)
未処理タルクに各割合で処理タルクを混合し、そのpHを測定することで、アルカリ性粉体によるpHの上昇を抑える処理タルクの能力を調べた。その結果を図1に示す。
(Test Example 1)
The ability of the treated talc to suppress the increase in pH due to the alkaline powder was examined by mixing the treated talc with the untreated talc at various ratios and measuring the pH. The result is shown in FIG.

処理粉体1はタルクのpHを混合割合に比例して低下させ、アルカリ性粉体によるpHの上昇を抑える能力を示した。 Treated powder 1 showed the ability to lower the pH of talc in proportion to the mixing ratio and suppress the increase in pH due to alkaline powder.

(試験例2)
pH 6.03, 7.20, 8.11, 9.02 の 10mM リン酸緩衝液を調製し、緩衝液30mlに粉体3gを加えてよく攪拌し、ろ過して、ろ液のpHを測定し、未処理粉体とpH調整能力を比較した。その結果を表1に示す。
(Test Example 2)
Prepare 10 mM phosphate buffer solution of pH 6.03, 7.20, 8.11, 9.02, add 3 g of powder to 30 ml of buffer, stir well, filter, measure the pH of the filtrate, measure the pH of untreated powder and pH The adjustment ability was compared. The results are shown in Table 1.

処理粉体1、2とも未処理粉体に比べ、中性およびアルカリ性の緩衝液のpHを下げた。そのpH調整能力は処理粉体1で強かった。一方、未処理粉体は緩衝液のpHを全て上昇させた。 The pH of the neutral and alkaline buffer solutions was lowered for both the treated powders 1 and 2 compared to the untreated powder. Its pH adjustment ability was strong with the treated powder 1. On the other hand, the untreated powder increased the pH of the buffer solution.

(試験例3)
皮膚に粉体を塗布し、10mM リン酸緩衝液(pH 9)を噴霧し、その前後のpHを測定することで、皮膚表面pHを調製する能力を調べた。その結果を表2に示す。
(Test Example 3)
The ability to adjust the skin surface pH was examined by applying powder to the skin, spraying with 10 mM phosphate buffer (pH 9), and measuring the pH before and after that. The results are shown in Table 2.

処理粉体1および2は皮膚表面pHの緩衝液による上昇を抑制した。 Treated powders 1 and 2 suppressed the increase in skin surface pH due to the buffer solution.

(試験例4)
表3に示す粉おしろいを皮膚に塗布し、10mM リン酸緩衝液(pH 9)を噴霧し、その前後のpHを測定することで、皮膚表面pHを調製する能力を調べた。その結果を表3に示す。
(Test Example 4)
The ability to adjust the skin surface pH was examined by applying powdery powder shown in Table 3 to the skin, spraying with 10 mM phosphate buffer (pH 9), and measuring the pH before and after that. The results are shown in Table 3.

表4に実施例及び比較例の皮膚表面pHを調製する能力を調べた。その結果を表4示す。
Table 4 shows the ability to adjust the skin surface pH of Examples and Comparative Examples. The results are shown in Table 4.

実施例1および2は皮膚表面pHの緩衝液による上昇を抑制した。
以上の結果より、本発明のメタクリル酸メチルとメタクリル酸との共重合体で処理した粉体を配合した粉おしろいに、皮膚表面のpH調節機能を有することが明示できる。
Examples 1 and 2 suppressed the increase of the skin surface pH due to the buffer solution.
From the above results, it can be clearly shown that the powdered face containing the powder treated with the copolymer of methyl methacrylate and methacrylic acid of the present invention has a function of adjusting the pH of the skin surface.

<処方例1>おしろい
(成分名) (配合量:重量%)
a)メタクリル酸メチルとメタクリル酸の共重合体処理タルク(処理粉体1) 25.0
b)タルク 30.0
c)カオリン 10.0
d)セリサイト 5.0
e)酸化チタン 5.0
f)ミリスチン酸亜鉛 5.0
g)着色顔料 適 量
h)オクタン酸セチル 5.0
i)防腐剤 適 量
(製法)
1) b)の一部とg)を混合し、粉砕機で粉砕する。
2) a)〜f)と前処理した1)を混合し、ヘンシェルミキサーにて均一に混合する。
3) 予めh)で溶解したi)を2)に噴霧添加し、均一に混合する。
4) 3)を粉砕機で粉砕し、中皿に圧縮成型する。
<Prescription Example 1> Interesting (Ingredient name) (Amount:% by weight)
a) Copolymerized talc of methyl methacrylate and methacrylic acid (treated powder 1) 25.0
b) Talc 30.0
c) Kaolin 10.0
d) Sericite 5.0
e) Titanium oxide 5.0
f) Zinc myristate 5.0
g) Coloring pigment appropriate amount
h) Cetyl octanoate 5.0
i) Preservative appropriate amount (Production method)
1) Part of b) and g) are mixed and pulverized with a pulverizer.
2) Mix a) to f) and pretreated 1), and mix uniformly with a Henschel mixer.
3) Spray i) previously dissolved in h) to 2) and mix uniformly.
4) Crush 3) with a pulverizer and compress it into an intermediate dish.

<処方例1>パウダーファンデーション1
(成分名) (配合量:重量%)
a)アクリル酸メチルとメタクリル酸の共重合体処理タルク(処理粉体2)
10.0
b)タルク 10.0
c)マイカ 30.0
d)カオリン 5.0
e)酸化チタン 15.0
f)ミリスチン酸亜鉛 5.0
g)ナイロンパウダー 10.0
h)着色顔料 適 量
i)オクタン酸セチル 2.0
j)スクワラン 5.0
k)モノオレイン酸ソルビタン 1.0
l)酸化防止剤 適 量
m)防腐剤 適 量
(製法)
1) b)の一部とh)を混合し、粉砕機で粉砕する。
2) a)〜g)と前処理した1)を混合し、ヘンシェルミキサーにて均一に混合する。
3) i)〜m)を混合し均一に溶解する。
4) 2)に3)を均一に噴霧混合し、粉砕機で粉砕し、中皿に圧縮成型する。
<Prescription Example 1> Powder Foundation 1
(Ingredient name) (Blending amount: wt%)
a) Copolymerized talc of methyl acrylate and methacrylic acid (treated powder 2)
10.0
b) Talc 10.0
c) Mica 30.0
d) Kaolin 5.0
e) Titanium oxide 15.0
f) Zinc myristate 5.0
g) Nylon powder 10.0
h) Coloring pigment appropriate amount
i) Cetyl octanoate 2.0
j) Squalane 5.0
k) Sorbitan monooleate 1.0
l) Antioxidant dosage
m) Preservative appropriate amount (production method)
1) Part of b) and h) are mixed and pulverized with a pulverizer.
2) Mix a) to g) with pretreated 1) and mix uniformly with a Henschel mixer.
3) Mix i) to m) and dissolve uniformly.
4) Spray and mix 3) into 2) uniformly, pulverize with a pulverizer, and compression mold into an intermediate dish

本発明のメーキャップ化粧料は、皮膚表面のpH調節機能を有することから皮膚保護効果の高いメーキャップ化粧料等へ応用が期待できる。 Since the makeup cosmetic of the present invention has a pH control function on the skin surface, it can be expected to be applied to makeup cosmetics having a high skin protection effect.

本発明の粉体の皮膚表面のpHに及ぼす影響を表わしたグラフ。The graph showing the influence which it has on the skin surface pH of the powder of this invention.

Claims (4)

メタクリル酸アルキルとメタクリル酸との共重合体、メタクリル酸アルキルとアクリル酸との共重合体、アクリル酸アルキルとメタクリル酸との共重合体あるいはアクリル酸アルキルとアクリル酸との共重合体で表面処理した粉体を含有することを特徴とするメーキャップ化粧料。 Surface treatment with a copolymer of alkyl methacrylate and methacrylic acid, a copolymer of alkyl methacrylate and acrylic acid, a copolymer of alkyl acrylate and methacrylic acid, or a copolymer of alkyl acrylate and acrylic acid Makeup cosmetics characterized in that they contain a powder. 請求項1に記載のメタクリル酸アルキルがメタクリル酸メチル、メタクリル酸エチル、メタクリル酸プロピルから選ばれる1種あるいは2種以上である共重合体で表面処理した粉体を含有することを特徴とするメーキャップ化粧料。 A makeup comprising a powder that is surface-treated with a copolymer in which the alkyl methacrylate according to claim 1 is one or more selected from methyl methacrylate, ethyl methacrylate, and propyl methacrylate. Cosmetics. 請求項1に記載のアクリル酸アルキルがアクリル酸メチル、アクリル酸エチル、アクリル酸プロピルから選ばれる1種あるいは2種以上である共重合体で表面処理した粉体を含有することを特徴とするメーキャップ化粧料。 A makeup comprising a powder that is surface-treated with a copolymer in which the alkyl acrylate according to claim 1 is one or more selected from methyl acrylate, ethyl acrylate, and propyl acrylate. Cosmetics. 請求項1に記載の粉体がタルク、カオリン、マイカ、ベントナイト、無水ケイ酸、ケイ酸マグネシウム、酸化チタン、雲母チタン、酸化亜鉛、ポリアクリル酸アルキル、ナイロン、結晶セルロースを処理した粉体から選ばれる1種あるいは2種以上である請求項2および3に記載の共重合体で表面処理した粉体を含有することを特徴とするメーキャップ化粧料。 The powder according to claim 1 is selected from powders obtained by treating talc, kaolin, mica, bentonite, silicic anhydride, magnesium silicate, titanium oxide, titanium mica, zinc oxide, polyalkyl acrylate, nylon, and crystalline cellulose. 4. A makeup cosmetic comprising the powder surface-treated with the copolymer according to claim 2 or 3 which is one kind or two or more kinds.
JP2007011984A 2007-01-22 2007-01-22 Makeup cosmetic Pending JP2008174528A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010265198A (en) * 2009-05-13 2010-11-25 Nippon Menaade Keshohin Kk Makeup cosmetic
JP2014101284A (en) * 2012-11-16 2014-06-05 Kao Corp Sheet-like cosmetic

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