JP2007009199A - 液晶乳化型組成物 - Google Patents
液晶乳化型組成物 Download PDFInfo
- Publication number
- JP2007009199A JP2007009199A JP2006154968A JP2006154968A JP2007009199A JP 2007009199 A JP2007009199 A JP 2007009199A JP 2006154968 A JP2006154968 A JP 2006154968A JP 2006154968 A JP2006154968 A JP 2006154968A JP 2007009199 A JP2007009199 A JP 2007009199A
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- Prior art keywords
- oil
- liquid crystal
- water
- solid
- fatty acid
- Prior art date
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- 235000011007 phosphoric acid Nutrition 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 229940093625 propylene glycol monostearate Drugs 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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- 235000011083 sodium citrates Nutrition 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
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- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
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- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
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- Medicinal Preparation (AREA)
- Cosmetics (AREA)
- Fats And Perfumes (AREA)
Abstract
皮膚外用剤または皮膚化粧料として油分量が少なく、基剤の保湿性能と温度安定性を高め、使用性(感触)に優れるラメラ構造を有する液晶乳化型組成物を提供する。
【解決手段】
油分に溶解しない固形高級アルコール、油分に溶解しない固形脂肪酸、油分、親油性非イオン界面活性剤、親水性非イオン界面活性剤、油分と混和しない水溶性多価アルコール、アミノ酸及び水の所定量を乳化し、適切な撹拌又は温度条件を選択することによって、明確な乳化粒子を認めず、光学異方性による屈折光を認める液晶乳化型組成物を調製する。
【選択図】なし
Description
固形高級アルコール、固形脂肪酸、油分および界面活性剤を表1に示した組成比率で秤量し、85℃で溶解させて、油相を調製した。また、アミノ酸およびpH調整剤、水溶性多価アルコールならびに水の一部を85℃で溶解させて水相を調製した。油相に水相を少量ずつ加えながら撹拌して濃縮混合物を調製した。
次に、保存剤及びpH調整剤、多価アルコールならびに水の残部を溶解させて後添水相を調製した。濃縮乳化物に後添水相を加え、撹拌および脱気を実施して、目的とする組成物を得た。
実施例1と同様に操作して表1〜表8に示した組成比率で組成物を調製した。
実施例1〜実施例21および比較例1〜比較例9の各組成物の少量をスライドグラス上にとり、カバーグラスを被せた後、顕微鏡観察(対物レンズ:40 倍,接眼レンズ 10倍)を実施した。また、簡易偏光フィルターを用いて光学異方性の有無についても観察した(対物レンズ:4〜40 倍,接眼レンズ 10倍)。
<評価基準>
A:明確な乳化粒子を認めず、光学異方性による屈折光を認める
B:1μm以下の乳化粒子のみ
C:1〜5μmの乳化粒子のみ
D:1〜5μmの乳化粒子が主で数〜数十μmの粒子も含む
E:その他
試験例1において液晶構造を形成していることが確認できた実施例1〜実施例21、比較例2、比較例3、比較例5、比較例6および比較例8の各組成物について乳化安定性試験を実施した。つまり、各組成物約5gをスピッツ管に充填し、充填した各試料を遠心(毎分3000回転,10分間)して脱気を行った。脱気後、50℃環境下にて1週間保管した。各試料を取り出し、室温下放置した後、遠心(毎分3000回転,10分間)した後に、各試料の水分離の程度を評価した。
<評価基準>
○:分離なし
×:分離あり
−:実施せず
官能性試験として、組成物を皮膚に塗布したときの延び具合、べたつきおよび白残りの3項目について評価した。
実施例1〜実施例21の各組成物はいずれも延びは非常にあり、塗布時のべたつきも「ない」から「ややある」である。また、皮膚に指で塗布したとき通常見られる白残り現象は起きず、直ちに透明になり皮膚になじむ様相が見られた。従って、皮膚外用剤または皮膚化粧料として用いるのに適している。
Claims (10)
- 油分に溶解しない固形高級アルコール、油分に溶解しない固形脂肪酸、油分、親油性非イオン界面活性剤、親水性非イオン界面活性剤、油分と混和しない水溶性多価アルコール、アミノ酸および水を含有する液晶乳化型組成物であって、油分に溶解しない固形高級アルコールの配合量が0.1〜1重量%である液晶乳化型組成物。
- 油分に溶解しない固形高級アルコールが炭素数16から22の飽和・直鎖型アルコールである請求項1に記載の液晶乳化型組成物。
- 油分に溶解しない固形脂肪酸が炭素数16から22の飽和・直鎖型脂肪酸である請求項1または2に記載の液晶乳化型組成物。
- 油分に溶解しない固形脂肪酸がパルミチン酸、ステアリン酸およびベヘン酸からなる群から選ばれる1種以上の固形脂肪酸である請求項1ないし3のいずれかに記載の液晶乳化型組成物。
- 油分に溶解しない固形脂肪酸がベヘン酸である請求項1ないし4のいずれかに記載の液晶乳化型組成物。
- 油分に溶解しない固形脂肪酸の配合量が0.05〜1重量%である請求項1ないし5のいずれかに記載の液晶乳化型組成物。
- アミノ酸がL−アルギニン、グリシンおよびN−アシル−L−グルタミン酸ナトリウムからなる群から選ばれる1種または2種以上のアミノ酸である請求項1ないし6のいずれかに記載の液晶乳化型組成物
- アミノ酸の配合量が0.001〜5重量%である請求項1ないし7のいずれかに記載の液晶乳化型組成物。
- 油分と混和しない水溶性多価アルコールがプロピレングリコール、ジプロピレングリコール、1,3−ブチレングリコールおよびグリセリンからなる群から選ばれる1種または2種以上の水溶性多価アルコールである請求項1ないし8のいずれかに記載の液晶乳化型組成物。
- 油分と混和しない水溶性多価アルコールの配合量が1〜20重量%である請求項1ないし9のいずれかに記載の液晶乳化型組成物。
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JP2007153786A (ja) * | 2005-12-02 | 2007-06-21 | Naris Cosmetics Co Ltd | 液晶組成物を含有する化粧料 |
WO2009034604A1 (ja) * | 2007-09-10 | 2009-03-19 | Maruho Co., Ltd. | シクロスポリンを含有する液晶乳化型医薬組成物およびそれを用いた皮膚疾患の治療方法 |
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