JP2012144466A - Emulsion - Google Patents

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JP2012144466A
JP2012144466A JP2011003235A JP2011003235A JP2012144466A JP 2012144466 A JP2012144466 A JP 2012144466A JP 2011003235 A JP2011003235 A JP 2011003235A JP 2011003235 A JP2011003235 A JP 2011003235A JP 2012144466 A JP2012144466 A JP 2012144466A
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emulsion
dimer
polyoxyethylene sorbitan
oil
acid
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Wakako Nishimura
和歌子 西村
Eri Ueda
恵利 上田
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Mikimoto Pharmaceutical Co Ltd
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Mikimoto Pharmaceutical Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide emulsion that has high temporal stability of the formulation, exhibits high feeling of use, has high moisture retention, is widely usable for skin care preparation or the like, and contains an ultraviolet absorber.SOLUTION: This emulsion is produced by mixing an oil-soluble ultraviolet absorber, polyoxyethylene sorbitan fatty acid ester, and acrylic acid/alkyl methacrylate copolymer. In addition, better emulsion can be produced by adding a derivative of dimer acid or dimer diol.

Description

本発明は、製剤の経時安定性が高く、使用感の優れ、且つ保湿性も高い、皮膚外用剤等に広く利用可能な、紫外線吸収剤を含むエマルジョンに関する。   The present invention relates to an emulsion containing a UV absorber, which can be widely used for external preparations for skin, etc., which has high stability over time of the preparation, excellent usability, and high moisture retention.

近年、種々理由からオゾン層が減少し、地表に到達する紫外線量が増加しつつある。
この紫外線は、直接的、間接的に様々な作用を皮膚に及ぼし、シミ、ソバカス、シワを増加させ、皮膚の老化を促進させることがわかってきており、夏の一時期のみならず、1年中、多くの場面で紫外線吸収剤配合の皮膚外用剤の使用がなされるようになった。
しかしながら、紫外線吸収剤を配合すると、経時安定性や使用感に問題があり、改善が求められていた。
これらを改善するため、アルキル変性カルボキシビニルポリマー、HLB10以上の非イオン性界面活性剤、ジオールダイマー等を用いて、種々改良が行われてきた。(特許文献1〜3)
しかしながら、満足できる製剤は得られなかった。
In recent years, the ozone layer has decreased for various reasons, and the amount of ultraviolet rays reaching the surface of the earth is increasing.
It has been found that this ultraviolet ray directly and indirectly exerts various effects on the skin, increases spots, freckles and wrinkles, and promotes skin aging. In many scenes, the topical skin preparation containing UV absorbers has been used.
However, when an ultraviolet absorber is blended, there is a problem in stability over time and feeling in use, and improvement has been demanded.
In order to improve these, various improvements have been made using an alkyl-modified carboxyvinyl polymer, a nonionic surfactant having an HLB of 10 or more, a diol dimer, and the like. (Patent Documents 1 to 3)
However, satisfactory formulations were not obtained.

特開平5−97644号公報JP-A-5-97644 特開2005−255669号公報JP 2005-255669 A 特開2005−12008号公報Japanese Patent Laid-Open No. 2005-12008

本発明の目的は製剤の経時安定性が高く、使用感の優れ、且つ保湿性も高い、皮膚外用剤等に広く利用可能な、紫外線吸収剤を含むエマルジョンを得ることにある。   An object of the present invention is to obtain an emulsion containing a UV absorber, which can be widely used for external preparations for skin, etc., having high stability over time of the preparation, excellent usability and high moisture retention.

本発明者は種々検討した結果、油溶性紫外線吸収剤と、ポリオキシエチレンソルビタン脂肪酸エステルと、アクリル酸メタクリル酸アルキル共重合体を配合したエマルジョンにすることによって問題を解決することがわかった。   As a result of various investigations, the present inventor has found that the problem can be solved by preparing an emulsion in which an oil-soluble ultraviolet absorber, a polyoxyethylene sorbitan fatty acid ester, and an alkyl methacrylate methacrylate copolymer are blended.

まず、油溶性紫外線吸収剤であるが、パラアミノ安息香酸、パラアミノ安息香酸メチル、パラアミノ安息香酸グリセリル、パラジメチルアミノ安息香酸アミル、パラジメチルアミノ安息香酸オクチル、サリチル酸エチレングリコール、サリチル酸フェニル、サリチル酸オクチル、サリチル酸ブチルフェニル、サリチル酸ホモメンチル、パラメトキシ桂皮酸エチル、パラメトキシ桂皮酸イソプロピル、パラメトキシ桂皮酸オクチル、パラメトキシ桂皮酸2-エトキシエチル、パラメトキシ桂皮酸ナトリウム、パラメトキシ桂皮酸カリウム、ジパラメトキシ桂皮酸モノ-2-エチルヘキサン酸グリセリル、2-ヒドロキシ-4-メトキシベンゾフェノン、2-ヒドロキシ-4-メトキシベンゾフェノン-5-スルホン酸、2-ヒドロキシ-4-メトキシベンゾフェノン-5-スルホン酸ナトリウム、ジヒドロキシジメトキシベンゾフェノン、2,4-ジヒドロキシベンゾフェノン、テトラヒドロキシベンゾフェノン、ブチルメトキシベンゾイルメタン、オクチルトリアゾン等が利用できるが、このなかでも、パラメトキシ桂皮酸エチル、パラメトキシ桂皮酸イソプロピル、パラメトキシ桂皮酸オクチル、パラメトキシ桂皮酸2-エトキシエチル、パラメトキシ桂皮酸ナトリウム、パラメトキシ桂皮酸カリウム、ジパラメトキシ桂皮酸モノ-2-エチルヘキサン酸グリセリル等のメトキシ桂皮酸誘導体、ブチルメトキシベンゾイルメタン等のベンゾイルメタン誘導体が好ましい。
これらの中から、幅広い波長で吸収が得られるように複数の油溶性紫外線吸収剤を選択し配合する。配合量は、油溶性紫外線吸収剤の種類や製剤の目的によって大きく異なるが、1〜50%、好ましくは3〜30%を配合する。
First, oil-soluble UV absorbers include paraaminobenzoic acid, methyl paraaminobenzoate, glyceryl paraaminobenzoate, amyl paradimethylaminobenzoate, octyl paradimethylaminobenzoate, ethylene glycol salicylate, phenyl salicylate, octyl salicylate, and salicylic acid. Butylphenyl, homomenthyl salicylate, ethyl paramethoxycinnamate, isopropyl paramethoxycinnamate, octyl paramethoxycinnamate, 2-ethoxyethyl paramethoxycinnamate, sodium paramethoxycinnamate, potassium paramethoxycinnamate, glyceryl di-2-methoxycinnamate mono-2-ethylhexanoate 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-hydroxy-4-methoxybenzophenone-5-sulfone Sodium, dihydroxydimethoxybenzophenone, 2,4-dihydroxybenzophenone, tetrahydroxybenzophenone, butylmethoxybenzoylmethane, octyl triazone, etc. can be used, among which ethyl paramethoxycinnamate, isopropyl paramethoxycinnamate, octyl paramethoxycinnamate, Preference is given to 2-methoxyethyl paramethoxycinnamate, sodium paramethoxycinnamate, potassium paramethoxycinnamate, methoxycinnamic acid derivatives such as glyceryl di-2-methoxycinnamate mono-2-ethylhexanoate, and benzoylmethane derivatives such as butylmethoxybenzoylmethane.
Among these, a plurality of oil-soluble ultraviolet absorbers are selected and blended so that absorption can be obtained in a wide range of wavelengths. The blending amount varies greatly depending on the type of oil-soluble ultraviolet absorber and the purpose of the preparation, but 1 to 50%, preferably 3 to 30% is blended.

ポリオキシエチレンソルビタン脂肪酸エステルは、ポリオキシエチレンの平均付加モル数が3〜60モル、脂肪酸は炭素数12〜22の飽和、不飽和、直鎖、分岐の脂肪酸の1種以上でエステル化度は0.5〜4モルであってHLBが9〜17のポリオキシエチレンソルビタン脂肪酸エステルより1種以上を選択する。
具体的に例示すれば、ポリオキシエチレンソルビタンモノヤシ油脂肪酸エステル(20E.O.)、ポリオキシエチレンソルビタンモノラウレート(6E.O.)、ポリオキシエチレンソルビタンモノパルミテート(20E.O.)、ポリオキシエチレンソルビタンモノステアレート(20E.O.)、ポリオキシエチレンソルビタンモノステアレート(6E.O.)、ポリオキシエチレンソルビタントリステアレート(20E.O.)、ポリオキシエチレンソルビタンモノオレエート(20E.O.)、ポリオキシエチレンソルビタンモノオレエート(6E.O.)、ポリオキシエチレンソルビタンテトラオレエート(30E.O.)、ポリオキシエチレンソルビタンテトラオレエート(40E.O.)、ポリオキシエチレンソルビタンテトラオレエート(40E.O.)等が挙げられる。
これを0.1〜10%好ましくは0.3〜5%配合する。
The polyoxyethylene sorbitan fatty acid ester has an average addition mole number of polyoxyethylene of 3 to 60 moles, and the fatty acid is one or more of saturated, unsaturated, linear and branched fatty acids having 12 to 22 carbon atoms, and the degree of esterification is 1 or more types are selected from the polyoxyethylene sorbitan fatty acid ester which is 0.5-4 mol and HLB is 9-17.
Specifically, polyoxyethylene sorbitan monococonut oil fatty acid ester (20E.O.), polyoxyethylene sorbitan monolaurate (6E.O.), polyoxyethylene sorbitan monopalmitate (20E.O.) , Polyoxyethylene sorbitan monostearate (20E.O.), polyoxyethylene sorbitan monostearate (6E.O.), polyoxyethylene sorbitan tristearate (20E.O.), polyoxyethylene sorbitan monooleate (20E.O.), polyoxyethylene sorbitan monooleate (6E.O.), polyoxyethylene sorbitan tetraoleate (30E.O.), polyoxyethylene sorbitan tetraoleate (40E.O.), poly And oxyethylene sorbitan tetraoleate (40E.O.).
This is blended 0.1 to 10%, preferably 0.3 to 5%.

アクリル酸メタクリル酸アルキル共重合体はメタクリル酸とアルコールを塩化チオニルなどのハロゲン化剤で処理して得たアルキルクロライドとをアルカリの存在下縮合する事によりメタクリル酸アルキルに誘導したものとアクリル酸とを常法に従って共重合することにより得ることができる。
アルキル基の好ましい炭素鎖の長さは8〜35であり、更に好ましくは10〜30である。更に、このものの分子量としては50万〜500万であることが好ましい。
ペムレン TR−1、ペムレン TR−2またはカーボポールETD(共にBFGoodrich社製)などが市販されているのでこれらをもちいればよい。
これを0.01〜5%好ましくは0.05〜1%配合する。
An alkyl methacrylate copolymer is obtained by condensing methacrylic acid with an alkyl chloride obtained by treating an alcohol with a halogenating agent such as thionyl chloride in the presence of an alkali and an acrylic acid. Can be obtained by copolymerization according to a conventional method.
The preferred carbon chain length of the alkyl group is 8-35, more preferably 10-30. Furthermore, the molecular weight of this product is preferably 500,000 to 5,000,000.
Pemlen TR-1, Pemlen TR-2, or Carbopol ETD (both manufactured by BFGoodrich) are commercially available.
This is blended 0.01 to 5%, preferably 0.05 to 1%.

上記以外ではダイマー酸若しくはダイマージオールの誘導体を配合すると、使用感が増し、保湿性も向上するので配合するとよりよい製剤が得られる。
ダイマー酸若しくはダイマージオールの誘導体としては、ダイマージリノール酸ジ(イソステアリル/フィトステリル)、ダイマージリノール酸(フィトステリル/イソステアリル/セチル/ステアリル/ベヘニル)、ジイソステアリン酸ダイマージリノレイル、ダイマージリノレイル水添ロジン縮合物、ヒドロキシアルキルダイマージリノレイルエーテル等が例示でき、これらの1種以上を配合する。
Except for the above, when a dimer acid or dimer diol derivative is added, the feeling of use is increased and the moisture retention is improved.
Dimer acid or dimer diol derivatives include dimer dilinoleic acid di (isostearyl / phytosteryl), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), diisostearate dimer dilinoleyl, dimer dilinoleyl Examples thereof include hydrogenated rosin condensates and hydroxyalkyl dimer linoleyl ether, and one or more of these are blended.

これ以外にも、水をはじめとして、必要な各種原料を配合し、エマルジョンとする。
このなかでも、保湿剤は配合されることが多く、酸化エチレン、エチレングリコール、ジエチレングリコール、トリエチレングリコール、エチレングリコールモノエチルエーテル、エチレングリコールモノブチルエーテル、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノエチルエーテル、ポリエチレングリコール、酸化プロピレン、プロピレングリコール、ポリプロピレングリコール、1,3-ブチレングリコール、ペンチルグリコール、グリセリン、ペンタエリトリトール、トレイトール、アラビトール、キシリトール、リビトール、ガラクチトール、ソルビトール、マンニトール、ラクチトール、マルチトール等の多価アルコールが利用される。
しかしながら、保湿剤のみで必要な保湿効果を得ようとすると、使用感が悪くなることが多かった。しかし本発明の製剤では、保湿剤以外の原料による保湿性が生じ、少ない多価アルコールの配合ですむことがわかった。
In addition to this, various necessary raw materials including water are blended to prepare an emulsion.
Of these, moisturizers are often blended, and ethylene oxide, ethylene glycol, diethylene glycol, triethylene glycol, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, polyethylene glycol, oxidized Polyhydric alcohols such as propylene, propylene glycol, polypropylene glycol, 1,3-butylene glycol, pentyl glycol, glycerin, pentaerythritol, threitol, arabitol, xylitol, ribitol, galactitol, sorbitol, mannitol, lactitol, maltitol are used Is done.
However, when trying to obtain a necessary moisturizing effect with only a moisturizing agent, the feeling of use often deteriorated. However, it has been found that the preparation of the present invention has a moisturizing property due to raw materials other than the moisturizing agent, and requires only a small amount of polyhydric alcohol.

これ以外にも、油、界面活性剤、水溶性高分子、各種薬剤等を配合し、エマルジョンを作成する。   In addition to this, an oil, a surfactant, a water-soluble polymer, various drugs and the like are blended to prepare an emulsion.

以下の表1と表2に実施例と比較例を記すがこれに限定されるものではない。数値は重量部を表す。また、その作成方法はA、B、それぞれ計量し、加温溶解したのち、撹拌しつつBにAを徐々に加えた。   Examples and Comparative Examples are shown in Tables 1 and 2 below, but are not limited thereto. Numerical values represent parts by weight. Further, A and B were weighed and dissolved by heating, and then A was gradually added to B while stirring.

Figure 2012144466
Figure 2012144466

Figure 2012144466
Figure 2012144466

なお、表1及び表2の注の原料は以下の商品を用いた。
注1)日本精化社製、商品名『Plandool−S』
注2)グッドリッチ株式会社製、商品名『ペムレンTR−1』
注3)和光純薬社製、商品名『ハイビスワコー103』
In addition, the following goods were used for the raw material of the note of Table 1 and Table 2.
Note 1) Product name “Plandool-S” manufactured by Nippon Seika Co., Ltd.
Note 2) Product name “Pemlen TR-1” manufactured by Goodrich Corporation
Note 3) Product name “Hibiswako 103” manufactured by Wako Pure Chemical Industries, Ltd.

表3は、製剤の外観、製剤の経時安定性は目視で観察した結果を記す。なお、製剤の経時安定性は40℃で、3ヶ月保管後に観察した結果である。
使用後のしっとり感、製剤の皮膚へのなじみの良さに関しては、女性10名に実施例及び比較例を使用してもらい以下の基準で評価し、平均を記載した。
3:かなり良好
2:良好
1:やや良好
0:普通
−1:やや不良
−2:不良
−3:かなり不良
Table 3 shows the results of visual observation of the appearance of the preparation and the temporal stability of the preparation. The stability over time of the formulation is the result observed after storage at 40 ° C. for 3 months.
Regarding the moist feeling after use and the familiarity of the preparation with the skin, 10 women were asked to use the examples and comparative examples, and the average was described.
3: Pretty good 2: Good 1: Slightly good 0: Normal-1: Slightly bad-2: Defective-3: Pretty bad

Figure 2012144466
Figure 2012144466

本発明の製剤は製剤の経時安定性が良く、使用後のしっとり感が強く、製剤の皮膚へのなじみも非常によいことがわかった。
さらに1ケ月間使用してもらったところ、比較例より紫外線防止効果も高かったことがわかり、当然必要な日焼け防止機能も充分なエマルジョンが得られることがわかった。
It has been found that the preparation of the present invention has good stability over time, has a strong moist feeling after use, and has a very good familiarity with the skin of the preparation.
Further, when used for one month, it was found that the ultraviolet ray prevention effect was higher than that of the comparative example, and it was naturally found that an emulsion having sufficient necessary sun protection function could be obtained.

Claims (3)

油溶性紫外線吸収剤と、ポリオキシエチレンソルビタン脂肪酸エステルと、アクリル酸メタクリル酸アルキル共重合体を配合したエマルジョン   An emulsion containing an oil-soluble UV absorber, polyoxyethylene sorbitan fatty acid ester, and an alkyl methacrylate methacrylate copolymer 油溶性紫外線吸収剤がメトキシ桂皮酸誘導体または/およびベンゾイルメタン誘導体である請求項1のエマルジョン   The emulsion according to claim 1, wherein the oil-soluble ultraviolet absorber is a methoxycinnamic acid derivative and / or a benzoylmethane derivative. さらに、ダイマー酸若しくはダイマージオールの誘導体を配合した請求項1乃至請求項2のエマルジョン   3. The emulsion according to claim 1, further comprising a dimer acid or a derivative of dimer diol.
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US9655821B2 (en) 2013-04-05 2017-05-23 The Procter & Gamble Company Personal care composition comprising a pre-emulsified formulation
US9993404B2 (en) 2015-01-15 2018-06-12 The Procter & Gamble Company Translucent hair conditioning composition
JP2020132568A (en) * 2019-02-20 2020-08-31 株式会社ノエビア Emulsion cosmetic
US10806688B2 (en) 2014-10-03 2020-10-20 The Procter And Gamble Company Method of achieving improved volume and combability using an anti-dandruff personal care composition comprising a pre-emulsified formulation
US10912723B2 (en) 2016-01-20 2021-02-09 The Procter And Gamble Company Hair conditioning composition comprising monoalkyl glyceryl ether

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US10912723B2 (en) 2016-01-20 2021-02-09 The Procter And Gamble Company Hair conditioning composition comprising monoalkyl glyceryl ether
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