JP3649620B2 - Composition for external use - Google Patents

Composition for external use Download PDF

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Publication number
JP3649620B2
JP3649620B2 JP08907299A JP8907299A JP3649620B2 JP 3649620 B2 JP3649620 B2 JP 3649620B2 JP 08907299 A JP08907299 A JP 08907299A JP 8907299 A JP8907299 A JP 8907299A JP 3649620 B2 JP3649620 B2 JP 3649620B2
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Japan
Prior art keywords
composition
phenoxyethanol
weight
methoxybutanol
external use
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JP08907299A
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Japanese (ja)
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JP2000281520A (en
Inventor
滋之 小川
良雄 浅賀
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Shiseido Co Ltd
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Shiseido Co Ltd
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Priority to JP08907299A priority Critical patent/JP3649620B2/en
Priority to TW093106144A priority patent/TWI276444B/en
Priority to TW089105626A priority patent/TW592711B/en
Priority to KR1020000016092A priority patent/KR20010014650A/en
Priority to EP00106717A priority patent/EP1040757B1/en
Priority to ES00106717T priority patent/ES2190918T3/en
Priority to US09/537,261 priority patent/US6620418B1/en
Priority to ES02002646T priority patent/ES2213126T3/en
Priority to EP02002646A priority patent/EP1201125B1/en
Priority to DE60001336T priority patent/DE60001336T2/en
Priority to DE60007323T priority patent/DE60007323T2/en
Publication of JP2000281520A publication Critical patent/JP2000281520A/en
Priority to US10/623,174 priority patent/US20050053630A1/en
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Description

【0001】
【発明の属する技術分野】
本発明は、化粧料等の外用組成物に関する。特に、本発明は防腐性に優れる共に使用性及び安全性にも優れた各種化粧料等の外用組成物に関する。
【0002】
【従来の技術】
化粧料等の外用組成物は、製造ラインの配管中等に付着する微生物による汚染、使用中の指等の皮膚との接触によるその表面にある菌による汚染あるいは使用中の水周りなどからの汚染は避けられない。そのため、外用組成物中には、通常微生物の増殖を抑制し、時間の経過と共に保存中に、これらの微生物を死滅させて製品の保存性を向上させることを目的として、パラオキシ安息香酸エステル(パラベン類と通称されている)等の防腐剤が配合されている。かかるパラベン類等の防腐剤は、外用組成物において用いる防腐手段としては、安全性及び有効性に優れたものである。
【0003】
しかしながら、ごく一部の敏感な使用者に対しては、使用時に刺激感等を伴う場合も想定されないわけではない。殊に昨今は、より肌に優しい外用組成物が求められる傾向があり、専らこのパラベン類を防腐手段として配合するだけでは、昨今の外用組成物に対する要求を完全に満足させることは非常に難しくなっている面は否めない。
【0004】
事実、我々の研究によれば、このパラベン類を配合した化粧料に対しごく一部の敏感な使用者において、皮膚刺激を訴える者がいることもわかった。勿論、パラベン類等の防腐剤を配合しない外用組成物を創製することも可能ではあるが、この場合、防腐性を確保するために無菌的に製造する必要が生じたり、内容量や使用期間を制限したり、小分け容器や中身の戻りのない容器(バックレスチューブ、ディスペンサー付きの容器など)の採用等、複雑な手段を駆使する必要性に迫られ、経済性、汎用性に欠けてしまう傾向が強くなる。
【0005】
【発明が解決しようとする課題】
そのようなことで、本発明者は、ごく敏感な皮膚を有する使用者に対しても使用時に刺激感等を伴うことのない格段に安全性及び使用性に優れ、かつ防腐性確保のために特殊な手段を必要としない外用組成物を提供するべく研究を進め、その結果開発したのが本発明である。したがって、本発明は、防腐性に優れ、かつ使用性及び安全性にも優れた外用組成物を提供することを解決すべき課題とするものである。すなわち本発明は防腐性に優れると共に使用性及び安全性にも優れた外用組成物を提供することを目的とするものである。
【0006】
【課題を解決するための手段】
本発明者は、前記したとおりの研究を行った結果、香料の溶解剤として汎用されている3−メチル−3−メトキシブタノールと、従来から防腐助剤として汎用されている2−フェノキシエタノールとを組み合わせて配合することにより、意外にも優れた防腐効果が発現しパラベン類やフェノキシエタノールの配合量を大幅に減量しても通常の使用に耐えうる防腐性を確保することができることを見出した。すなわち、本願発明では、両化合物については、前記したとおりの使用態様はあるものの、従来併用されることがなかった両化合物を併用することにより、優れた防腐効果が発現し防腐性を確保することができることを見出した。
【0007】
そして、特に3−メチル−3−メトキシブタノール及び2−フェノキシエタノールを組み合わせる際の配合量によっては、パラベン類を配合することなく十分な防腐性を確保できることを見出し、更に使用性及び安全性にも優れたことを確認し本発明を完成するに至った。すなわち、本発明は、3−メチル−3−メトキシブタノール及び2−フェノキシエタノールを含む、防腐性に優れると共に使用性及び安全性にも優れた各種化粧料等の外用組成物を提供するものである。
【0008】
【発明の実施の形態】
以下、本発明の実施の形態について説明する。
本発明において、「外用組成物」とは、凡そ外用に用いる組成物全般を包括する概念であり、例えば基礎化粧料、メーキャップ化粧料、毛髪用化粧料等の各種化粧料や、軟膏剤等の種々の医薬品ないし医薬部外品等に広く適用可能な組成物のことを言う。なお、本発明は、これらの態様の外用組成物を個別に提供するものである。また、本発明において、「防腐」とは、細菌、カビ、酵母等の汚染微生物全てに対する抵抗性を意味し、「防腐力」とはこれらの汚染微生物全てに対する防御力を意味するものである。
【0009】
本発明外用組成物(以下、本発明外用組成物という)に配合する必須2成分のうちの1成分である3−メチル−3−メトキシブタノールは、下記式で表わされる構造をとる。

Figure 0003649620
この化合物は通常香料の溶解剤の1つとして外用組成物中に配合されている成分であり、通常の公知方法を用いて製造したものを本発明外用組成物中に配合することができる。また、市販品(クラレ社製品等)を本発明外用組成物中に配合することも可能である。
【0010】
本発明外用組成物における、3−メチル−3−メトキシブタノールの配合量は、付与すべき防腐力の強度や、これに組み合わせて配合する2フェノキシエタノールの配合量に応じて適宜決定することが可能であり、特に限定されるものでないが、所望する防腐効果を外用組成物中において有効に発揮させるためには、組成物全量に対して0.1重量%以上の割合で配合することが好ましい。その配合量の上限については、特に限定されるべきものではないが、組成物全量に対して10.0重量%で充分であり、それ以上に配合しても効果の向上は期待できない。
【0011】
本発明組成物において、上記3−メチル−3−メトキシブタノールと共に配合されるもう1つの必須成分である2−フェノキシエタノールは下記式で表わされる構造を有する化合物である。この2−フェノキシエタノールは、通常防腐助剤として外用組成物中に配合されている成分である。
【0012】
【式1】
Figure 0003649620
【0013】
本発明外用組成物中に配合する2−フェノキシエタノールについては、通常の公知方法、例えばフェノールにエチレンオキシドを作用させたり、ナトリウムフェノキシドとエチレンクロルヒドリンとを反応させる等の方法により製造した2−フェノキシエタノールを配合することが可能であり、市販品を配合することも勿論可能である。
【0014】
本発明外用組成物中の2−フェノキシエタノールの配合量は、付与すべき防腐力の強度や、これと組み合わせて配合する、上記3−メチル−3−メトキシブタノールの配合量に応じて適宜決定することが可能であり、特に限定されるものではないが、所望の防腐効果を有効に発揮させるためには外用組成物全量に対して0.01重量%以上の割合で配合することが好ましい。
【0015】
その2−フェノキシエタノールの配合量の上限については、外用組成物の性質に応じて適宜決定されるべきものであり特に限定されるべきものではないが、本発明外用組成物は、2−フェノキシエタノールの配合量が減量され得ることも特徴の一つであるから、この2−フェノキシエタノールの配合量は、本発明の所期の効果を損なわない限り、一部に認められるフェノキシエタノールに敏感である使用者に対する配慮の点から可能な限り少量であることが望ましい。
【0016】
本発明外用組成物の防腐手段として配合される、上記3−メチル−3−メトキシブタノールと2−フェノキシエタノールの配合割合は、一般的に一方の配合量を多く設定すると、他方の配合量は相対的に少量にし、逆に一方の配合量を少なく設定すると、他方の配合量は相対的に多量にすることが、本発明の所期の効果を有効に発揮させるためには好ましい。
【0017】
例えば、後述する実施例に示すように、3−メチル−3−メトキシブタノールの配合量が組成物全量に対して0.1重量%以下(0重量%を除く)の場合には、2−フェノキシエタノールを同0.5重量%以上配合すると比較的良好に効果が発揮され得る。また、3−メチル−3−メトキシブタノールの配合量が組成物全量に対して0.1重量%を超えて1.0重量%以下の場合には、2−フェノキシエタノールを同0.3重量%以上配合すると比較的良好に効果が発揮され得、同様に1.0重量%を超えて3.0重量%以下の場合には、2−フェノキシエタノールを同0.1重量%以上配合すると比較的良好に効果が発揮され得る。
【0018】
そして、3−メチル−3−メトキシブタノールの配合量が組成物全量に対して3.0重量%を超えて5.0重量%以下の場合には、2−フェノキシエタノールを同0.05重量%以上配合すると比較的良好に効果が発揮され得る。さらに、3−メチル−3−メトキシブタノールの配合量が組成物全量に対して5.0重量%を超えて10.0重量%以下の場合には、2−フェノキシエタノールを同0.01%以上配合すると比較的良好に効果が発揮され得る。
【0019】
このようにして、本発明では、外用組成物において3−メチル−3−メトキシブタノール及び2−フェノキシエタノールを併用するという新規な組み合わせを採用することにより、驚くべきことにパラベン類を始めとする防腐剤を配合しなくとも、少量の2−フェノキシエタノールの配合で十分な防腐性が確保され、優れた使用性と安全性を兼ね備えた外用組成物が提供される。
【0020】
この本発明における外用組成物は、上記した本発明の所期の効果のみを企図する限り、他の防腐剤や防腐助剤を本発明外用組成物中に追加配合する必要はないが、この所期の効果を損なわない範囲で外用組成物に通常使用されるその他の防腐剤や防腐助剤を本発明外用組成物中に追加配合することを妨げるものではない。すなわち、本発明組成物では、その所期の効果を損なわない限り、企図する外用組成物の性質に応じて、通常外用剤に配合されている成分、例えば、保湿剤、紫外線吸収剤、ビタミン類、動植物抽出成分、消炎剤、美白剤、血管拡張剤、収斂剤、清涼剤、ホルモン剤等を配合することは勿論可能でる。
【0021】
そして、本発明の外用組成物は、前述したように外皮に適用される化粧料、医薬品、医薬部外品等に広く適用することが可能であり、その剤型も水溶液系、可溶化系、乳化系、油液系、ゲル系、ペースト系、軟膏系、エアゾール系、水―油2層系、水―油―粉末3層系等幅広い剤型を採り得る。すなわち、基礎化粧料であれば、洗顔料、化粧水、乳液、クリーム、ジェル、エッセンス(美容液)、パック、マスク等の形態に、上記の多様な剤型において広く適用可能である。
【0022】
また、毛髪用化粧料であれば、シャンプー、リンス、整髪量、養毛料等の形態に上記の多様な剤型において広く適用可能である。さらに、医薬品または医薬部外品の場合には、各種の軟膏剤等の形態に広く適用が可能である。なお、これらの剤型及び形態に、本発明外用組成物の採り得る剤型及び形態が限定されるものではない。
【0023】
その際には、本発明外用組成物は、上記の所望する剤型及び形態に応じて通常公知の基剤成分を本発明の所期の効果が損なわれない範囲で広く配合することができる。すなわち、液体油脂、固体油脂、ロウ類、炭化水素油、高級脂肪酸、高級アルコール、合成エステル油、シリコーン類、各種の界面活性剤、金属イオン封鎖剤、水溶性高分子、増粘剤、各種の粉末成分、色剤、香料、水等を必要に応じて本発明外用組成物中に適宜配合することができる。
【0024】
【実施例】
本発明外用組成物の具体的な処方については、後述する実施例においてさらに具体的に説明するが、これらの実施例により本発明は何等限定されるものではなく、特許請求の範囲の記載により特定されるべきものであることはいうまでもない。なお、本実施例中、配合量を示す「重量%」または「%」は、特に断りがない限り組成物全量に対する重量%を意味する。
【0025】
実施例を開示するに先立ち、先ず使用性等試験と防腐力判定試験について説明する。
<使用性等試験>
過去にパラベンを配合した外用組成物を使用した際に皮膚の刺激感を訴えたパネル30名に対して、本発明外用組成物等を1日当り朝夕2回の頻度で1週間使用させて、べたつき等の点からの使用性の満足度と共に皮膚刺激の有無を申告させた。
【0026】
<防腐力判定試験>
試料30mlに菌液を接種後、塗抹法により菌数の変化を調べた。なお、接種菌は、カビ、酵母、バクテリアを用いて、2週間経時までの菌数変化により防腐力を評価し、得られた結果を以下の4段階の基準に分類した。なお、以下の分類のうち、◎あるいは○のものを合格と判定した。
◎:早急に効果が認められる
○:効果が認められる
△:ほとんど効果が認められない
×:全く効果が認められない
【0027】
[実施例1.2及び比較例1.2]
下記表1において示した処方の本発明外用組成物の一態様としての実施例1、2の化粧水及び比較例1、2の化粧水について上記使用性等試験及び防腐力判定試験を行い、その結果も表1に記載した。なお、これらの化粧水の製造方法は、化粧水の製造方法として一般的に用いられている方法に従った。
【0028】
【表1】
Figure 0003649620
【0029】
その表1の結果から、実施例1、2においては、皮膚刺激が少なく使用性にも満足したものの割合が多く、かつ防腐性も確保されていたことがわかる。また、2−フェノキシエタノールを配合しない比較例1においては、3−メチル−3−メトキシブタノールの配合量が少ない場合には皮膚刺激が少なく、かつ使用性にも満足したものの割合が高かったが、防腐力には劣っていた。
【0030】
一方、比較例1同様2−フェノキシエタノールは配合しないが、メチルパラベンを配合した比較例2においては防腐力には優れるものの、皮膚刺激を訴える者が多く見受けられた。これらの結果より、3−メチル−3−メトキシブタノールと2−フェノキシエタノールとを組み合わせることにより、防腐力を保持しつつ、皮膚刺激が少なく、使用性も良好な外用組成物が提供されることが明らかになった。
【0031】
[実施例3〜7及び比較例3.4]
次に、3−メチル−3−メトキシブタノールと2−フェノキシエタノールとの配合量を変化させた化粧水(なお、3−メチル−3−メトキシブタノールと2−フェノキシエタノールの以外の配合成分及び配合量は上記表1に示した処方と同じである。)について、上記防腐力試験及び使用性試験を行った。それぞれの化粧水の3−メチル−3−メトキシブタノールと2−フェノキシエタノールの配合量と試験結果を表2に示す。
【0032】
【表2】
Figure 0003649620
【0033】
その表2の試験結果から、3−メチル−3−メトキシブタノールの配合量が0.1重量%である実施例3においては、2−フェノキシエタノールの配合量が0.5重量で満足すべき結果が得らた。また、3−メチル−3−メトキシブタノールの配合量が1.0重量%である実施例4においては、2−フェノキシエタノールの配合量が0.3重量%で満足すべき結果が得られ、同様に3−メチル−3−メトキシブタノールの配合量が3.0重量%である実施例5においては、2−フェノキシエタノールの配合量が0.1重量%で満足すべき結果が得られた。
【0034】
そして、3−メチル−3−メトキシブタノールの配合量が5.0重量%である実施例6においては、2−フェノキシエタノールの配合量が0.05重量で満足すべき結果が得られた。さらに3−メチル−3−メトキシブタノールの配合量が外用組成物の10.0重量%である実施例7においても、2−フェノキシエタノールの配合量が0.01重量%で使用性、防腐力共に満足すべき結果が得られた。なお、2−フェノキシエタノールを全く配合していない比較例4、5は、いずれも防腐力が十分なものではなかった。
【0035】
これらの結果より、3−メチル−3−メトキシブタノールと2−フェノキシエタノールとの本発明外用組成物中における配合割合は、3−メチル−3−メトキシブタノールの配合量が0.1重量%以下(0重量%を除く)の場合には、2−フェノキシエタノールを0.5重量%以上配合すると、比較的良好な結果が得られることが明らかになった。また、3−メチル−3−メトキシブタノールの配合量が0.1重量%を超えて1.0重量%以下の場合には、2−フェノキシエタノールを0.3重量%以上配合すると比較的良好な結果が得られることが明らかになった。
【0036】
そして、3−メチル−3−メトキシブタノールの配合量が1.0重量%を超えて3.0重量%以下の場合には、2−フェノキシエタノールを0.1重量%以上配合すると比較的良好な結果が得られることが明らかになった。さらに、3−メチル−3−メトキシブタノールの配合量が3.0重量%を超えて5.0重量%以下の場合には、2−フェノキシエタノールを0.05重量%以上配合すると比較的良好な結果が得られることが明らかになった。また3−メチル−3−メトキシブタノールの配合量が5.0重量%を超えて10重量%以下の場合には、2−フェノキシエタノールを0.01重量%以上配合すると、比較的良好な結果が得られることも明らかになった。
【0037】
以下に、種々の処方の本発明外用組成物の実施例を示すが、いずれの実施例も、優れた防腐力を維持しつつ皮膚刺激が少なく、使用性も良好であった。なお、これらの実施例における外用組成物の製造方法は、各態様の外用組成物における製造方法として一般的に用いられている方法に従った。
【0038】
Figure 0003649620
【0039】
Figure 0003649620
【0040】
Figure 0003649620
【0041】
【発明の効果】
以上の実施例及び発明の実施の形態等の記載から明らかなように、本発明は、基礎化粧料、メーキャップ化粧料あるいは毛髪用化粧料等の各種化粧料や、軟膏剤等の種々の医薬品ないし医薬部外品等の外用組成物において、パラオキシ安息香酸エステルを配合することなく、防腐性に優れ、かつ使用性及び安全性にも優れた外用組成物を提供することを可能とした卓越した効果を奏するものである。その結果、本発明はパラベン類に敏感な使用者に対しても、適用可能な安全性及び有効性に優れたものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composition for external use such as cosmetics. In particular, the present invention relates to a composition for external use such as various cosmetics having excellent antiseptic properties and excellent usability and safety.
[0002]
[Prior art]
Compositions for external use such as cosmetics are not contaminated by microorganisms adhering to the piping of the production line, contamination by bacteria on the surface due to contact with the skin of the finger during use, or contamination from around the water during use. Unavoidable. Therefore, in the composition for external use, a paraoxybenzoate ester (paraben) is usually used for the purpose of suppressing the growth of microorganisms and killing these microorganisms during storage over time to improve the storage stability of the product. And other preservatives are blended. Such preservatives such as parabens are excellent in safety and effectiveness as antiseptic means used in compositions for external use.
[0003]
However, it may not be assumed that only a part of sensitive users are accompanied by a feeling of irritation during use. In particular, there has recently been a tendency for a skin-friendly external composition to be demanded, and it is very difficult to completely satisfy the recent requirements for an external composition simply by blending these parabens as a preservative. I can't deny the side.
[0004]
In fact, according to our research, it was also found that there are some who complain of skin irritation in a few sensitive users for cosmetics containing this paraben. Of course, it is possible to create a composition for external use that does not contain a preservative such as parabens, but in this case, it may be necessary to produce aseptically to ensure antiseptic properties, There is a tendency to lack economic efficiency and versatility due to the need to use complicated means such as restricting, adopting subdivided containers and containers that do not return contents (backless tubes, containers with dispensers, etc.) Becomes stronger.
[0005]
[Problems to be solved by the invention]
As such, the inventor of the present invention has excellent safety and usability without any irritation during use, even for users with extremely sensitive skin, and to ensure antiseptic properties. The present invention has been developed as a result of research to provide a composition for external use that does not require special means. Therefore, this invention makes it the subject which should be solved to provide the composition for external use which was excellent in antiseptic | preservative property, and was excellent also in usability and safety. That is, an object of the present invention is to provide a composition for external use which is excellent in antiseptic properties and excellent in usability and safety.
[0006]
[Means for Solving the Problems]
As a result of conducting the research as described above, the present inventor combined 3-methyl-3-methoxybutanol, which has been widely used as a fragrance solubilizer, and 2-phenoxyethanol, which has been conventionally used as a preservative. It has been found that an unexpectedly excellent antiseptic effect can be obtained by adding the antibacterial effect, and the antiseptic property that can withstand normal use can be ensured even if the amount of parabens or phenoxyethanol is greatly reduced. That is, in the present invention, although both compounds have a use mode as described above, by using both compounds that have never been used together, an excellent antiseptic effect is exhibited and antiseptic properties are ensured. I found out that I can.
[0007]
In particular, depending on the blending amount when combining 3-methyl-3-methoxybutanol and 2-phenoxyethanol, it was found that sufficient antiseptic properties can be secured without blending parabens, and further excellent in usability and safety. It was confirmed that the present invention was completed. That is, the present invention provides a composition for external use such as various cosmetics including 3-methyl-3-methoxybutanol and 2-phenoxyethanol, which has excellent antiseptic properties and excellent usability and safety.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention are described below.
In the present invention, the “external composition” is a concept encompassing all compositions used for external use, such as various cosmetics such as basic cosmetics, makeup cosmetics, hair cosmetics, ointments and the like. It refers to a composition that can be widely applied to various pharmaceuticals or quasi drugs. In addition, this invention provides the composition for external use of these aspects separately. In the present invention, “preservation” means resistance to all contaminating microorganisms such as bacteria, molds, yeasts, etc., and “preservation power” means protection against all these contaminating microorganisms.
[0009]
3-methyl-3-methoxybutanol, which is one of the two essential components blended in the composition for external use of the present invention (hereinafter referred to as the composition for external use of the present invention), has a structure represented by the following formula.
Figure 0003649620
This compound is a component that is usually blended in the external composition as one of the solubilizing agents for fragrances, and can be blended in the composition for external use of the present invention that is produced by using a known method. Moreover, it is also possible to mix | blend a commercial item (Kuraray company products etc.) in this invention external composition.
[0010]
The blending amount of 3-methyl-3-methoxybutanol in the composition for external use of the present invention can be appropriately determined according to the strength of the antiseptic to be imparted and the blending amount of 2-phenoxyethanol to be blended in combination with this. Although not particularly limited, in order to effectively exhibit the desired antiseptic effect in the composition for external use, it is preferably blended at a ratio of 0.1% by weight or more based on the total amount of the composition. The upper limit of the blending amount is not particularly limited, but 10.0% by weight is sufficient with respect to the total amount of the composition, and even if blended more than that, the effect cannot be expected.
[0011]
In the composition of the present invention, 2-phenoxyethanol, which is another essential component to be blended with the 3-methyl-3-methoxybutanol, is a compound having a structure represented by the following formula. This 2-phenoxyethanol is a component that is usually blended in an external composition as a preservative.
[0012]
[Formula 1]
Figure 0003649620
[0013]
As for 2-phenoxyethanol to be blended in the composition for external use of the present invention, 2-phenoxyethanol produced by a usual known method, for example, a method of reacting phenol with ethylene oxide or reacting sodium phenoxide with ethylene chlorohydrin is used. Of course, it is possible to mix commercially available products.
[0014]
The blending amount of 2-phenoxyethanol in the composition for external use of the present invention should be appropriately determined according to the strength of the antiseptic power to be imparted and the blending amount of the above-mentioned 3-methyl-3-methoxybutanol to be blended in combination therewith. Although it is not particularly limited, it is preferably blended at a ratio of 0.01% by weight or more with respect to the total amount of the externally applied composition in order to effectively exhibit the desired antiseptic effect.
[0015]
The upper limit of the blending amount of 2-phenoxyethanol should be appropriately determined according to the properties of the composition for external use and is not particularly limited, but the composition for external use of the present invention is blended with 2-phenoxyethanol. Since it is one of the characteristics that the amount can be reduced, the amount of the 2-phenoxyethanol blended is considered for a user who is sensitive to phenoxyethanol which is partially recognized unless the desired effect of the present invention is impaired. In view of the above, it is desirable that the amount be as small as possible.
[0016]
The blending ratio of the above-mentioned 3-methyl-3-methoxybutanol and 2-phenoxyethanol, which is blended as an antiseptic means of the composition for external use of the present invention, is generally set so that one blending amount is large, and the other blending amount is relative On the contrary, if one compounding amount is set small, it is preferable to make the other compounding amount relatively large in order to effectively exhibit the desired effect of the present invention.
[0017]
For example, as shown in the examples described later, when the blending amount of 3-methyl-3-methoxybutanol is 0.1% by weight or less (excluding 0% by weight) based on the total amount of the composition, 2-phenoxyethanol When 0.5% by weight or more is blended, the effect can be exhibited relatively well. When the blending amount of 3-methyl-3-methoxybutanol is more than 0.1% by weight and not more than 1.0% by weight with respect to the total amount of the composition, 2-phenoxyethanol is added at 0.3% by weight or more. When blended, the effect can be exhibited relatively well. Similarly, in the case of exceeding 1.0% by weight and 3.0% by weight or less, it is relatively favorable when 2-phenoxyethanol is blended by 0.1% by weight or more. The effect can be exhibited.
[0018]
And when the compounding quantity of 3-methyl-3-methoxybutanol exceeds 3.0 weight% with respect to the composition whole quantity and 5.0 weight% or less, 2-phenoxyethanol is 0.05 weight% or more of the same When blended, the effect can be exhibited relatively well. Furthermore, when the blending amount of 3-methyl-3-methoxybutanol exceeds 5.0% by weight and 10.0% by weight or less with respect to the total amount of the composition, 2-phenoxyethanol is blended by 0.01% or more. Then, the effect can be exhibited relatively well.
[0019]
Thus, in the present invention, surprisingly, by adopting a novel combination of 3-methyl-3-methoxybutanol and 2-phenoxyethanol in an external composition, an antiseptic such as parabens is surprisingly used. Even if it does not mix | blend, sufficient antiseptic property is ensured by mixing | blending a small amount of 2-phenoxyethanol, and the composition for external use which has the outstanding usability and safety | security is provided.
[0020]
As long as only the intended effect of the present invention described above is intended, the external composition of the present invention does not require any other preservatives or preservatives to be added to the external composition of the present invention. It does not preclude the addition of other preservatives and preservatives that are usually used in external compositions to the extent that they do not impair the effects of the period. That is, in the composition of the present invention, as long as the intended effect is not impaired, the components that are usually blended in the external preparation, such as a moisturizer, an ultraviolet absorber, and vitamins, depending on the properties of the intended external composition. Of course, it is possible to blend animal and plant extract components, anti-inflammatory agents, whitening agents, vasodilators, astringents, refreshing agents, hormone agents, and the like.
[0021]
And, as described above, the composition for external use of the present invention can be widely applied to cosmetics, pharmaceuticals, quasi-drugs and the like applied to the outer skin, and its dosage form is also an aqueous solution system, a solubilization system, A wide variety of dosage forms such as emulsification system, oil liquid system, gel system, paste system, ointment system, aerosol system, water-oil two-layer system, water-oil-powder three-layer system can be adopted. That is, if it is a basic cosmetic, it can be widely applied to the forms of face wash, lotion, milky lotion, cream, gel, essence (beauty serum), pack, mask and the like in the above various dosage forms.
[0022]
Moreover, if it is cosmetics for hair, it can apply widely in said various dosage forms to forms, such as a shampoo, rinse, hair-styling, and hair nourishing. Furthermore, in the case of pharmaceuticals or quasi drugs, it can be widely applied to various ointment forms. In addition, the dosage form and form which the composition for external use of this invention can take are not limited to these dosage forms and forms.
[0023]
In that case, the composition for external use of this invention can mix | blend widely well-known base components in the range which does not impair the desired effect of this invention according to said desired dosage form and form. That is, liquid fats and oils, solid fats and oils, waxes, hydrocarbon oils, higher fatty acids, higher alcohols, synthetic ester oils, silicones, various surfactants, sequestering agents, water-soluble polymers, thickeners, various types A powder component, a coloring agent, a fragrance | flavor, water, etc. can be suitably mix | blended in this invention external composition as needed.
[0024]
【Example】
The specific formulation of the composition for external use of the present invention will be described more specifically in the examples described later. However, the present invention is not limited to these examples, and is specified by the description of the claims. It goes without saying that it should be done. In the examples, “wt%” or “%” indicating the blending amount means wt% relative to the total amount of the composition unless otherwise specified.
[0025]
Prior to disclosing the examples, the usability test and the antiseptic test will be described first.
<Usability test>
For 30 panelists who complained of skin irritation when using an external composition containing parabens in the past, the external composition of the present invention was used twice a day in the morning and evening for a week. The presence or absence of skin irritation was reported along with satisfaction with usability from the above points.
[0026]
<Preservation test>
After inoculating the bacterial solution in 30 ml of the sample, the change in the number of bacteria was examined by a smear method. The inoculum used was mold, yeast, and bacteria, and the antiseptic power was evaluated by the change in the number of bacteria up to 2 weeks. The obtained results were classified into the following four steps. Of the following classifications, ◎ or ○ were determined to be acceptable.
◎: Effect is recognized immediately ○: Effect is recognized Δ: Almost no effect is observed ×: No effect is observed at all [0027]
[Example 1.2 and Comparative Example 1.2]
For the lotions of Examples 1 and 2 and the lotions of Comparative Examples 1 and 2 as one embodiment of the composition for external use of the present invention having the formulation shown in Table 1 below, the above usability test and antiseptic test were conducted. The results are also shown in Table 1. In addition, the manufacturing method of these lotions followed the method generally used as the manufacturing method of a lotion.
[0028]
[Table 1]
Figure 0003649620
[0029]
From the results shown in Table 1, it can be seen that in Examples 1 and 2, the ratio of those with little skin irritation and satisfactory usability was high, and antiseptic properties were secured. Further, in Comparative Example 1 in which 2-phenoxyethanol was not blended, when the blending amount of 3-methyl-3-methoxybutanol was small, the ratio of those with little skin irritation and satisfactory usability was high. It was inferior to power.
[0030]
On the other hand, 2-phenoxyethanol was not blended as in Comparative Example 1, but in Comparative Example 2 blended with methylparaben, many people complained of skin irritation although excellent in antiseptic power. From these results, it is clear that the combination of 3-methyl-3-methoxybutanol and 2-phenoxyethanol provides an external composition that maintains antiseptic power, has little skin irritation, and has good usability. Became.
[0031]
[Examples 3 to 7 and Comparative Example 3.4]
Next, a lotion in which the blending amount of 3-methyl-3-methoxybutanol and 2-phenoxyethanol is changed (note that the blending components and blending amounts other than 3-methyl-3-methoxybutanol and 2-phenoxyethanol are the same as above) The preservative test and usability test were conducted for the same formula as shown in Table 1. Table 2 shows the blending amounts of 3-methyl-3-methoxybutanol and 2-phenoxyethanol and the test results for each lotion.
[0032]
[Table 2]
Figure 0003649620
[0033]
From the test results of Table 2, in Example 3 where the blending amount of 3-methyl-3-methoxybutanol is 0.1% by weight, a satisfactory result is obtained when the blending amount of 2-phenoxyethanol is 0.5%. Got. Further, in Example 4 where the blending amount of 3-methyl-3-methoxybutanol is 1.0% by weight, satisfactory results were obtained when the blending amount of 2-phenoxyethanol was 0.3% by weight. In Example 5 where the blending amount of 3-methyl-3-methoxybutanol was 3.0% by weight, satisfactory results were obtained when the blending amount of 2-phenoxyethanol was 0.1% by weight.
[0034]
In Example 6 in which the blending amount of 3-methyl-3-methoxybutanol was 5.0% by weight, a satisfactory result was obtained when the blending amount of 2-phenoxyethanol was 0.05%. Furthermore, also in Example 7 where the blending amount of 3-methyl-3-methoxybutanol is 10.0% by weight of the composition for external use, the blending amount of 2-phenoxyethanol is 0.01% by weight and both usability and antiseptic power are satisfied. The result to be obtained was obtained. In Comparative Examples 4 and 5 in which 2-phenoxyethanol was not blended at all, the antiseptic power was not sufficient.
[0035]
From these results, the blending ratio of 3-methyl-3-methoxybutanol and 2-phenoxyethanol in the composition for external use of the present invention was such that the blending amount of 3-methyl-3-methoxybutanol was 0.1% by weight or less (0 In the case of (except for% by weight), it was revealed that relatively good results can be obtained by adding 0.5% by weight or more of 2-phenoxyethanol. When the blending amount of 3-methyl-3-methoxybutanol is more than 0.1% by weight and 1.0% by weight or less, a relatively good result is obtained by blending 0.3% by weight or more of 2-phenoxyethanol. It became clear that can be obtained.
[0036]
And when the compounding quantity of 3-methyl-3-methoxybutanol exceeds 1.0 weight% and 3.0 weight% or less, when 2-phenoxyethanol is mix | blended 0.1 weight% or more, it is a comparatively favorable result. It became clear that can be obtained. Furthermore, when the blending amount of 3-methyl-3-methoxybutanol is more than 3.0% by weight and 5.0% by weight or less, relatively good results are obtained when 0.05% by weight or more of 2-phenoxyethanol is blended. It became clear that can be obtained. When the blending amount of 3-methyl-3-methoxybutanol is more than 5.0% by weight and 10% by weight or less, a relatively good result can be obtained by blending 2-phenoxyethanol in an amount of 0.01% by weight or more. It was also revealed that
[0037]
Examples of the composition for external use of the present invention with various formulations will be shown below. In each of the examples, while maintaining excellent antiseptic power, there was little skin irritation and good usability. In addition, the manufacturing method of the external composition in these Examples followed the method generally used as the manufacturing method in the external composition of each aspect.
[0038]
Figure 0003649620
[0039]
Figure 0003649620
[0040]
Figure 0003649620
[0041]
【The invention's effect】
As is apparent from the description of the above examples and embodiments of the invention, the present invention is not limited to various cosmetics such as basic cosmetics, makeup cosmetics or hair cosmetics, and various pharmaceuticals such as ointments. Outstanding effects that made it possible to provide a composition for external use, such as quasi-drugs, which has excellent antiseptic properties and is excellent in usability and safety, without the addition of paraoxybenzoate. It plays. As a result, the present invention is excellent in safety and effectiveness applicable even to users who are sensitive to parabens.

Claims (2)

3−メチル−3−メトキシブタノールおよび2−フェノキシエタノールを含有する、防腐性に優れ、かつ使用性及び安全性に優れた外用組成物。A composition for external use, which contains 3-methyl-3-methoxybutanol and 2-phenoxyethanol, has excellent antiseptic properties, and is excellent in usability and safety. 外用組成物が化粧料である、請求項1記載の外用組成物。The external composition according to claim 1, wherein the external composition is a cosmetic.
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JP08907299A JP3649620B2 (en) 1999-03-30 1999-03-30 Composition for external use
TW089105626A TW592711B (en) 1999-03-30 2000-03-28 Antiseptic/antifungal agent and endermic liniment composition which contains the same
TW093106144A TWI276444B (en) 1999-03-30 2000-03-28 Cosmetic composition for external use
ES02002646T ES2213126T3 (en) 1999-03-30 2000-03-29 ANTISEPTIC / ANTIMICOTIC AGENT AND COMPOSITION OF LINIMENT THAT IS ABSORBED THROUGH THE SKIN CONTAINING IT.
ES00106717T ES2190918T3 (en) 1999-03-30 2000-03-29 ANTISEPTICO / ANTIFUNGICO AGENT AND ENDERMIC LINIMENT COMPOSITION CONTAINING IT.
US09/537,261 US6620418B1 (en) 1999-03-30 2000-03-29 Antiseptic/antifungal agent and endermic liniment composition which contains it
KR1020000016092A KR20010014650A (en) 1999-03-30 2000-03-29 An antiseptic/antifungal agent and an endermic liniment composition containing same
EP02002646A EP1201125B1 (en) 1999-03-30 2000-03-29 Antiseptic/antifungal agent and endermic liniment composition which contains it
DE60001336T DE60001336T2 (en) 1999-03-30 2000-03-29 Antiseptic / fungicidal agent and endermatic ointment containing it
DE60007323T DE60007323T2 (en) 1999-03-30 2000-03-29 Antiseptic / fungicidal agent and endermatic ointment that it contains
EP00106717A EP1040757B1 (en) 1999-03-30 2000-03-29 Antiseptic/antifungal agent and endermic liniment composition which contains it
US10/623,174 US20050053630A1 (en) 1999-03-30 2003-07-21 Antiseptic/antifungal agent and endermic liniment composition which contains it

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