JP3560128B2 - Transparent gel composition - Google Patents

Transparent gel composition Download PDF

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Publication number
JP3560128B2
JP3560128B2 JP21390898A JP21390898A JP3560128B2 JP 3560128 B2 JP3560128 B2 JP 3560128B2 JP 21390898 A JP21390898 A JP 21390898A JP 21390898 A JP21390898 A JP 21390898A JP 3560128 B2 JP3560128 B2 JP 3560128B2
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Prior art keywords
fatty acid
gel composition
weight
transparent gel
ester
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JP21390898A
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JP2000044424A (en
Inventor
雅彦 石飛
博信 國枝
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Mitsubishi Chemical Corp
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Mitsubishi Chemical Corp
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  • Cosmetics (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Colloid Chemistry (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、安全性の高いショ糖脂肪酸エステルを含有する透明ゲル状組成物に関し、更に詳細には、保湿化粧料、浴用化粧料、クレンジング剤、マッサージ剤、パック化粧料、頭髪化粧料などや医薬品基材として使用することのできる、多量の油性成分を含有し、伸びが良く、且つ外観が透明なゲル状組成物に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
従来、透明ゲル状組成物の界面活性剤としてアルキル硫酸塩、ポリオキシエチレンアルキルエーテル硫酸エステル塩、ポリオキシエチレンアルキルエーテルリン酸エステル塩及びα−オレフィンスルホン酸塩などのアニオン界面活性剤が広く使われている。しかし、これらアニオン界面活性剤は、程度の差はあるが、いずれも皮膚刺激性を誘発するという欠点を有している。
【0003】
また、同様に、透明ゲル状組成物の界面活性剤として用いられている、ポリオキシエチレン系非イオン性界面活性剤は、分子鎖中に親水性基としてエチレンオキシド鎖を有しているので、エチレンオキシド鎖が経時的に分解してゲル形成能が低下してしまうほか、エチレンオキシドの分解生成物であるホルマリンの溶出や、pHが低下するなどの危険があり、特に食品用途には安全性上の問題から、我国においては認可されておらず、用途に制約がある。
【0004】
一方、ショ糖脂肪酸エステルは、食品添加物として認可されている界面活性剤であり、人体に対する安全性が高いことが確認されている。このようなことから、ショ糖脂肪酸エステルを用いた透明ゲル状組成物の開発が望まれていた。しかし、ショ糖脂肪酸エステルを用いてゲル状組成物を調製した場合には、透明で安定なゲルを得ることが難しく、実用的に満足できるものとはならなかった。
【0005】
【課題を解決するための手段】
本発明者らは、このような現状に鑑み、食品用乳化剤として認可されているショ糖脂肪酸エステルによる透明ゲルの生成に関して鋭意研究した結果、特定のエステル化率のショ糖脂肪酸エステルを特定量比の油性成分及び水と混合しゲル状組成物を調製することにより、使用感が良好で、保存安定性に優れ、さらに皮膚に対する作用が温和であり、洗浄効果に優れた透明ゲル状組成物が生成することを見いだし、本発明を完成するに至った。
【0006】
すなわち、本発明の要旨は、(a)モノエステルとモノエステル以外のエステルとの重量比が1.0〜2.0:1であるエステル分布を持ち、構成脂肪酸の65重量%以上が炭素数8〜14の飽和脂肪酸または炭素数16〜22の不飽和脂肪酸であるショ糖脂肪酸エステル30〜50重量%、(b)油性成分15〜50重量%および(c)水20〜35重量%を含有してなる透明ゲル状組成物に存する。
【0007】
【発明の実施の形態】
以下、本発明を詳細に説明する。
本発明に係る透明ゲル状組成物は、(a)特定のショ糖脂肪酸エステル、(b)油性成分、および(c)水の3成分をその構成成分として含有する。以下、各成分につき説明する。
【0008】
(a)成分:
本発明に用いるショ糖脂肪酸エステルとしては、特定の種類の脂肪酸が特定の割合以上で、脂肪酸が特定のエステル化率でエステル化されたショ糖脂肪酸エステルである。
本発明に用いるショ糖脂肪酸エステルの構成脂肪酸としては、構成脂肪酸の65重量%以上が炭素数8〜14の飽和脂肪酸または炭素数16〜22の不飽和脂肪酸であり、具体的にはラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、オレイン酸、エルカ酸などが挙げられる。これらの中でも炭素数12〜18の脂肪酸が好ましく、特にラウリン酸が好ましい。これらの脂肪酸はショ糖脂肪酸エステルの構成脂肪酸の65重量%以上であり、好ましくは80重量%以上、特に90重量%以上であることが好ましい。
【0009】
本発明に用いるショ糖脂肪酸エステルは、上記のような構成脂肪酸を持ち、そのエステル分布は、モノエステルの、ジエステルからオクタエステルの合計に対する比が1.0−2.0、より好ましくは1.15−1.90である。
(a)成分であるショ糖脂肪酸エステルは、(b)成分である油性成分を水相中へ可溶化させた界面活性剤閉鎖集合体(球状ミセル、棒状ミセル等)が格子配列した、非常に粘性が高い等方性の透明なゲルを形成する機能を果たす。
ショ糖脂肪酸エステルは、上記に示す性質のものであれば特に制限はされず、またこれらは1種でも2種以上の混合物であってもよい。
また、ショ糖脂肪酸エステルの配合量は、最終組成物の重量に対する重量%で30−50%、より好ましくは35−45%である。
【0010】
(b)成分:
本発明で使用される液状油性物質は,常温で液状を呈する液状物質であって、液状の高級脂肪族炭化水素類、動植物性油脂類、高級アルコール、高級脂肪酸、合成エステル油、グリコール高級脂肪酸エステル、シリコン油等である。例えば、n−ヘプタン、n−オクタン、n−デカン、n−ヘキサデカン、流動パラフィン,スクワラン、菜種油、オリーブ油、ひまし油、ホホバ油、オクチルドデカノール、オクチルドデシルミリステート、2−エチルヘキサン酸トリグリセリド、カプリン酸トリグリセリド、オレインアルコール、オレイン酸等を挙げることが出来る。これらの液状油性物質は1種又は2種以上組み合わせて用いることができる。
液状油性物質の配合量は、最終組成物の重量に対する重量%で15−50%、より好ましくは20−45%である。
【0011】
(c)成分:
水であれば特に制限はないが、化粧品、医薬品、食品などの用途に応じた品質の水を適宜選択すれば良い。また、水の配合量は、最終組成物の重量に対する重量%で20−35%、より好ましくは25−30%である。
本発明の透明ゲル状組成物は、上述した成分を必須の構成成分とするが、当該組成物には、本発明の目的を達成する範囲で他の成分を適宜配合することが出来る。なお、当然のことながら、本発明の成分(a)〜(c)の配合量はその合計量が100重量%となるように選択される。
【0012】
すなわち、化粧料、医薬品などに一般に使用される薬剤、防腐剤、着色料、着香料、保湿剤、紫外線吸収剤、エッセンシャルオイル、ワックス、脂肪酸およびそのアルコールとのエステル、ビタミン類、抗酸化剤、飽和、不飽和の高級アルコール、炭化水素類、保存料、殺菌料等が挙げられる。
本発明にかかる、透明ゲル状組成物は、ショ糖脂肪酸エステル、水、液状油性物質を各所定量秤量し、加熱下撹拌・混合し、室温に冷却して、容易に調製することができる。この際の撹拌は強力な機械撹拌を適用することは必須ではなく、振盪程度で十分である。ただし、強力な剪断力を適用する撹拌を全く排除するものではない。
本発明にかかる透明ゲル状組成物は、化粧品、消臭剤、入浴剤、芳香剤、脱臭剤、食品、医薬などにおいて常温で透明ゲル状を呈する各種の用途がある。そして、これら製品は油溶性物質が分離したりすることなく、液状油性物質が水性媒体に安定に分散されている。
【0013】
【発明の効果】
本発明に係る透明ゲル状組成物は、食品添加物として広く使用されているショ糖脂肪酸エステルのみを用い、実質的に他の成分を用いず、油性成分が安定に水性媒体に安定に分散されており、極めて安全性に優れている。
【0014】
【実施例】
次に、本発明を実施例によって更に具体的に説明するが、本発明はその要旨を越えない限り以下の実施例に限定されるものではない。
なお、以下の例において、透明ゲル状組成物についての「保存安定性」の測定は、次に記載の方法によった。
実施例、比較例で調製した液状組成物を、直径10mm、長さ8cmのガラス管に封入し、25℃に設定した恒温水槽中に6ヶ月間浸漬し、管内の透明ゲル状組成物の分離の有無を、目視観察した。
【0015】
実施例1〜6
(a)成分としてショ糖ラウリン酸エステル(L−1695(モノエステル含量82.5%)、L−595(モノエステル含量32.1%)、三菱化学フーズ(株))、(b)成分としてデカン(特級、東京化成工業(株))、ヘキサデカン(特級、東京化成工業(株))、スクアラン(特級、東京化成工業(株))、(c)成分として蒸留水を表−1に記載した配合で秤量し、容器に入れ、95℃に加熱しつつ振盪したあと室温に冷却し、透明ゲル状組成物を得た。
得られた透明ゲル状組成物につき、上に記載の方法で保存安定性を測定した。結果を表−1に示す。
また、用いたショ糖ラウリン酸エステルのモノエステルとモノエステル以外のエステルとの重量比を併せて表−1に示す。
【0016】
比較例1〜5
(a)成分としてショ糖ラウリン酸エステル(L−1695(モノエステル含量82.5%)、L−595(モノエステル含量32.1%)、三菱化学フーズ(株))、(b)成分としてデカン(特級、東京化成工業(株))、ヘキサデカン(特級、東京化成工業(株))、スクアラン(特級、東京化成工業(株))(c)成分として蒸留水を表−1に記載した配合で秤量し、容器に入れ、95℃に加熱しつつ振盪したあと室温に冷却し、ゲル状組成物を得た。
得られたゲル状組成物につき、上に記載の方法で保存安定性を測定した。結果を表−1に示す。
また、用いたショ糖ラウリン酸エステルのモノエステルとモノエステル以外のエステルとの重量比を併せて表−1に示す。
【0017】
【表1】

Figure 0003560128
【0018】
【表2】
Figure 0003560128
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a transparent gel composition containing a highly safe sucrose fatty acid ester, and more specifically, a moisturizing cosmetic, a bath cosmetic, a cleansing agent, a massage agent, a pack cosmetic, a hair cosmetic, and the like. The present invention relates to a gel composition containing a large amount of oily components, having good elongation, and having a transparent appearance, which can be used as a pharmaceutical base material.
[0002]
Problems to be solved by the prior art and the invention
Conventionally, anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl ether phosphates, and α-olefin sulfonates have been widely used as surfactants in transparent gel compositions. Has been done. However, these anionic surfactants have the disadvantage that, to varying degrees, they induce skin irritation.
[0003]
Similarly, a polyoxyethylene-based nonionic surfactant used as a surfactant in a transparent gel composition has an ethylene oxide chain as a hydrophilic group in the molecular chain. In addition to the degradation of the gel formation ability due to the decomposition of the chains over time, there is also the danger of elution of formalin, which is the decomposition product of ethylene oxide, and a decrease in pH. Therefore, it has not been approved in Japan and its use is restricted.
[0004]
On the other hand, sucrose fatty acid ester is a surfactant approved as a food additive and has been confirmed to be highly safe for the human body. For these reasons, development of a transparent gel composition using a sucrose fatty acid ester has been desired. However, when a gel composition was prepared using a sucrose fatty acid ester, it was difficult to obtain a transparent and stable gel, which was not practically satisfactory.
[0005]
[Means for Solving the Problems]
In view of such circumstances, the present inventors have conducted intensive studies on the production of transparent gels using sucrose fatty acid esters that have been approved as food emulsifiers. By preparing a gel composition by mixing with the oily component of water and water, a transparent gel composition having a good usability, excellent storage stability, a mild action on the skin, and an excellent cleaning effect can be obtained. It has been found that the present invention is produced, and the present invention has been completed.
[0006]
That is, the gist of the present invention is to provide (a) an ester distribution in which the weight ratio of a monoester to an ester other than a monoester is 1.0 to 2.0: 1, and 65% by weight or more of the constituent fatty acids has carbon atoms. Contains 30 to 50% by weight of a sucrose fatty acid ester which is a saturated fatty acid having 8 to 14 or an unsaturated fatty acid having 16 to 22 carbon atoms, (b) 15 to 50% by weight of an oily component, and (c) 20 to 35% by weight of water. In a transparent gel composition.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail.
The transparent gel composition according to the present invention contains (a) a specific sucrose fatty acid ester, (b) an oily component, and (c) water as three components. Hereinafter, each component will be described.
[0008]
Component (a):
The sucrose fatty acid ester used in the present invention is a sucrose fatty acid ester in which a specific type of fatty acid has a specific ratio or more and the fatty acid is esterified at a specific esterification rate.
As the constituent fatty acid of the sucrose fatty acid ester used in the present invention, 65% by weight or more of the constituent fatty acid is a saturated fatty acid having 8 to 14 carbon atoms or an unsaturated fatty acid having 16 to 22 carbon atoms, and specifically, lauric acid, And myristic acid, palmitic acid, stearic acid, oleic acid, erucic acid and the like. Among them, fatty acids having 12 to 18 carbon atoms are preferable, and lauric acid is particularly preferable. These fatty acids are at least 65% by weight of the constituent fatty acids of the sucrose fatty acid ester, preferably at least 80% by weight, particularly preferably at least 90% by weight.
[0009]
The sucrose fatty acid ester used in the present invention has the constituent fatty acids as described above, and the ester distribution is such that the ratio of the monoester to the total of diester to octaester is 1.0 to 2.0, more preferably 1. 15-1.90.
The sucrose fatty acid ester as the component (a) has a very small number of surfactant-closed aggregates (spherical micelles, rod-shaped micelles, etc.) obtained by solubilizing the oily component as the component (b) in an aqueous phase. It performs the function of forming a highly viscous isotropic transparent gel.
The sucrose fatty acid ester is not particularly limited as long as it has the properties described above, and these may be one kind or a mixture of two or more kinds.
The amount of the sucrose fatty acid ester is 30 to 50% by weight, more preferably 35 to 45% by weight based on the weight of the final composition.
[0010]
Component (b):
The liquid oily substance used in the present invention is a liquid substance which exhibits a liquid state at normal temperature, and is a liquid higher aliphatic hydrocarbon, animal and vegetable oils and fats, higher alcohols, higher fatty acids, synthetic ester oils, glycol higher fatty acid esters. , Silicon oil and the like. For example, n-heptane, n-octane, n-decane, n-hexadecane, liquid paraffin, squalane, rapeseed oil, olive oil, castor oil, jojoba oil, octyldodecanol, octyldodecyl myristate, 2-ethylhexanoic acid triglyceride, capric acid Triglyceride, oleic alcohol, oleic acid and the like can be mentioned. These liquid oily substances can be used alone or in combination of two or more.
The amount of the liquid oleaginous substance is 15 to 50% by weight relative to the weight of the final composition, more preferably 20 to 45%.
[0011]
Component (c):
There is no particular limitation as long as it is water, but water of a quality according to the use of cosmetics, pharmaceuticals, foods and the like may be appropriately selected. The amount of water is 20-35% by weight relative to the weight of the final composition, and more preferably 25-30%.
The transparent gel composition of the present invention contains the above-mentioned components as essential components, but other components can be appropriately added to the composition as long as the object of the present invention is achieved. It should be noted that the amounts of the components (a) to (c) of the present invention are selected so that the total amount is 100% by weight.
[0012]
That is, drugs, preservatives, coloring agents, flavoring agents, humectants, ultraviolet absorbers, essential oils, waxes, esters with fatty acids and their alcohols, vitamins, antioxidants, saturated agents commonly used in cosmetics, pharmaceuticals, etc. , Unsaturated higher alcohols, hydrocarbons, preservatives, disinfectants and the like.
The transparent gel composition according to the present invention can be easily prepared by weighing predetermined amounts of sucrose fatty acid ester, water and liquid oily substance, stirring and mixing under heating, and cooling to room temperature. In this case, it is not essential to apply strong mechanical stirring, and shaking is sufficient. However, this does not preclude the application of strong shear forces.
The transparent gel composition according to the present invention has various uses in a cosmetic, a deodorant, a bath agent, a fragrance, a deodorant, a food, a medicine, etc., exhibiting a transparent gel at room temperature. In these products, the liquid oily substance is stably dispersed in the aqueous medium without separating the oil-soluble substance.
[0013]
【The invention's effect】
The transparent gel composition according to the present invention uses only a sucrose fatty acid ester widely used as a food additive, uses substantially no other components, and the oil component is stably dispersed in the aqueous medium. It is extremely safe.
[0014]
【Example】
Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples unless departing from the gist of the present invention.
In the following examples, the "storage stability" of the transparent gel composition was measured according to the method described below.
The liquid compositions prepared in Examples and Comparative Examples were sealed in a glass tube having a diameter of 10 mm and a length of 8 cm, and immersed in a constant temperature water bath set at 25 ° C. for 6 months to separate the transparent gel composition in the tubes. Was visually observed.
[0015]
Examples 1 to 6
As component (a) sucrose laurate (L-1695 (monoester content 82.5%), L-595 (monoester content 32.1%), Mitsubishi Chemical Foods Co., Ltd.), component (b) Table 1 lists decane (special grade, Tokyo Chemical Industry Co., Ltd.), hexadecane (special grade, Tokyo Chemical Industry Co., Ltd.), squalane (special grade, Tokyo Chemical Industry Co., Ltd.), and distilled water as the component (c). The mixture was weighed, placed in a container, shaken while heating to 95 ° C., and then cooled to room temperature to obtain a transparent gel composition.
The storage stability of the obtained transparent gel composition was measured by the method described above. The results are shown in Table 1.
Table 1 also shows the weight ratio of the monoester of sucrose laurate used and the ester other than the monoester used.
[0016]
Comparative Examples 1 to 5
As component (a) sucrose laurate (L-1695 (monoester content 82.5%), L-595 (monoester content 32.1%), Mitsubishi Chemical Foods Co., Ltd.), component (b) Decane (special grade, Tokyo Chemical Industry Co., Ltd.), hexadecane (special grade, Tokyo Chemical Industry Co., Ltd.), squalane (special grade, Tokyo Chemical Industry Co., Ltd.) , The mixture was placed in a container, shaken while heating to 95 ° C, and then cooled to room temperature to obtain a gel composition.
The storage stability of the obtained gel composition was measured by the method described above. The results are shown in Table 1.
Table 1 also shows the weight ratio of the monoester of sucrose laurate used and the ester other than the monoester used.
[0017]
[Table 1]
Figure 0003560128
[0018]
[Table 2]
Figure 0003560128

Claims (3)

(a)モノエステルとモノエステル以外のエステルとの重量比が1.0〜2.0:1であるエステル分布を持ち、構成脂肪酸の65重量%以上が炭素数8〜14の飽和脂肪酸または炭素数16〜22の不飽和脂肪酸であるショ糖脂肪酸エステル30〜50重量%、
(b)油性成分15〜50重量%および
(c)水20〜35重量%を含有してなる透明ゲル状組成物。
(A) a monoester and an ester other than the monoester have an ester distribution in which the weight ratio is 1.0 to 2.0: 1, and 65% by weight or more of the constituent fatty acid is a saturated fatty acid having 8 to 14 carbon atoms or carbon 30 to 50% by weight of a sucrose fatty acid ester which is an unsaturated fatty acid having a number of 16 to 22,
A transparent gel composition comprising (b) 15 to 50% by weight of an oily component and (c) 20 to 35% by weight of water.
ショ糖脂肪酸エステルが、モノエステルとモノエステル以外のエステルとの重量比が1.15〜1.90:1であるエステル分布を持つことを特徴とする請求項1記載の透明ゲル状組成物。The transparent gel composition according to claim 1, wherein the sucrose fatty acid ester has an ester distribution in which the weight ratio of the monoester to the ester other than the monoester is 1.15 to 1.90: 1. 0〜60℃の温度範囲において、外観が均一透明を呈するものである請求項1または2に記載の透明ゲル状組成物。The transparent gel composition according to claim 1 or 2, wherein the composition has a uniform and transparent appearance in a temperature range of 0 to 60C.
JP21390898A 1998-07-29 1998-07-29 Transparent gel composition Expired - Fee Related JP3560128B2 (en)

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JP3560128B2 true JP3560128B2 (en) 2004-09-02

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