JP2004189749A - Cosmetic composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic composition containing an extremely safe surfactant having high emulsifying power and used in a cosmetic. <P>SOLUTION: The cosmetic composition is a mixture of polyglycerine condensed ricinoleic ester and polyglycerine lauric ester and containing 15-60wt.% of polyglycerine condensed ricinoleic ester in the composition. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to an extremely safe surfactant having strong emulsifying power and used as a cosmetic.

    Conventionally, anionic surfactants such as higher fatty acid soaps and alkyl sulfonates, and nonionic surfactants such as polyethylene glycol alkyl ethers, polyoxyethylene fatty acid esters, and sorbitan fatty acid esters have been used as detergents, emulsifiers, dispersants, and the like. It has been widely used. However, the surfactant has a problem in safety. On the other hand, sucrose fatty acid esters and polyglycerin fatty acid esters, which are known as highly safe emulsifiers, have the disadvantage that the emulsifying power is remarkably inferior to those of the above-mentioned surfactants, especially nonionic surfactants. Thus, there has been a demand for a surfactant which is excellent in safety and which can satisfy emulsifying power.

  A small amount of water added to bath water to improve bathing sensation, beauty effects and medicinal effects.For lipophilic components of herbs and crude drugs, olive oil, squalane, etc. Oily components are widely used. However, when added directly to the bath water, it does not dissolve in the bath water, floats on the surface of the bath water, or remains sticky on the skin even after the bath, leaving a problem in the feeling of use. Therefore, as a method of preventing the floating of oily components, an oily active ingredient such as olive oil and a surfactant were previously prepared as a mixture, and when added to bath water, a natural emulsification into bath water was devised. .

  However, surfactants used for these purposes have many problems in terms of safety. That is, any polyhydric alcohol fatty acid ester such as a sorbitan fatty acid ester having relatively high safety cannot be used as a lipophilic emulsifier having a low HLB to produce an emulsion having good water dispersibility that meets the purpose. For this reason, nonionic surfactants having a polyoxyethylene having a high HLB are mainly used for this purpose. However, nonionic surfactants have problems in safety such as hemolysis and skin irritation, and are not suitable for this purpose. On the other hand, sucrose fatty acid esters and polyglycerin fatty acid esters, which are known as highly safe emulsifiers, have a much lower emulsifying power compared to nonionic surfactants, and do not require much emulsifying power, especially food emulsifying systems. Used in many. Also, it was generally considered that it is almost impossible to emulsify olive water or the like in a large-capacity bath water with its low emulsifying power. Therefore, there has been no example of using polyglycerin fatty acid ester alone as an emulsifier for a bath agent. There is a need for the development of a safe and excellent emulsifying surfactant that can be used as an emulsifier for such bath agents, and a new type of bath agent is required.

  A field in which the development of a surfactant having a safe and excellent emulsifying action is required is a waste oil treating agent such as an edible oil used in home and business use. Since waste oil has fluidity, it is difficult to dispose it as garbage as it is, and if it is poured directly into the sewer, there are problems such as clogging of drain pipes and polluting rivers. It has recently been proposed to emulsify such waste oil with a surfactant and convert it to a useful detergent or the like for effective use. However, for this purpose, there is a demand for the development of a surfactant which is safe and has an excellent emulsifying action. There is also a need for the development of a surfactant that has a safe and excellent emulsifying action for products that are directly ingested, such as foods and pharmaceuticals, and cosmetics, and that comes into contact with the skin of humans and the like.

  Of these, the development of a surfactant that is safe and has an excellent emulsifying action is also required especially when capsules are made of fat-soluble drugs such as foods and pharmaceuticals. By the way, when filling a fat-soluble health food and a fat-soluble drug into capsules for the purpose of easy taking, the food and drug are converted into an oily liquid with polyglycerin fatty acid ester in order to improve the absorption rate and absorption rate in the body. None, attempts to make self-emulsifying capsules are known. For example, Japanese Patent Publication No. Sho 62-30965 discloses a technique of dispersing with a polyglycerin unsaturated fatty acid ester, and Japanese Patent Publication No. 474339 discloses a technique of dispersing with a polyglycerin saturated fatty acid ester to form self-emulsifying capsules. It has been disclosed. JP-A-61-12632 discloses a technique of dispersing a mixture of a polyglycerin fatty acid ester having an HLB of 11.5 or more and a polyglycerin fatty acid ester having an HLB of 1.5 or less to form a self-emulsifying capsule. It has been disclosed.

  However, these techniques still have some problems. That is, the emulsification by the polyglycerin fatty acid ester is insufficient, and a sufficiently good emulsification for improving the absorption rate of the drug in the body cannot be obtained. In addition, as a result, a large amount of a high-glycidyl fatty acid ester having a high HLB and a high viscosity is used, and the viscosity at the time of filling the capsule becomes extremely high, which is a problem in production. If the viscosity of the filling is high, it is not possible to make a seamless minicapsule manufactured by discharging from a double nozzle or a triple nozzle with a small orifice diameter.

  Furthermore, even with soft gelatin capsules, there is a problem that high-viscosity fillers cannot be filled, or even if filled, the filling amount cannot be controlled. In addition, the viscosity is lowered by heating the filling liquid, but at 40 ° C. or higher, the gelatin of the coating film cannot be solidified and cannot be filled. Even if the temperature is kept slightly lower than 40 ° C., the viscosity does not sufficiently decrease, resulting in a deformed capsule, resulting in poor sealing, liquid leakage, and poor stability over time.

  Heretofore, as a countermeasure for such a problem, for example, glycerin or low-viscosity relatively easy to emulsify, such as safflower oil or octyldecyl triglyceride, is added as a part of the emulsified composition for capsule filling, and the viscosity is adjusted. That has been done. However, in such a measure, the amount of addition other than the target substance increases, and it becomes difficult to obtain good emulsification. In addition, there is a problem that it is necessary to increase the dose of two capsules or three capsules instead of one capsule, which makes it difficult to take the capsule easily. Thus, the conventional techniques can be said to be, as it were, unfinished capsules obtained by compromise between the emulsification for improving the absorption rate in the body and the viscosity for filling the capsules.

  Accordingly, the present inventors have conducted intensive studies in pursuit of compatibility between safety and emulsifying power, and as a result, a surfactant composition which is highly safe and has a specifically strong emulsifying power and can cope with many lipophilic components. And succeeded in producing an emulsifier composition using the surfactant composition. Therefore, the object of the present invention is to use it for emulsification of medicines and health foods, to be easily used as an emulsification base for cosmetics, and to be easily used for household detergents. And to provide an emulsifier composition using the surfactant composition. Another object of the present invention is to provide an O / W type surfactant which is safe and strong in emulsifying power, and at the same time, utilizes its emulsifying power, is safe and harmless even if ingested, is gentle on skin, and is biodegradable. Another object of the present invention is to provide a highly safe bathing agent and waste oil treatment agent (which can be disposed directly in sewers and rivers).

    A surface activity, which is a mixture of the polyglycerin condensed ricinoleate and the polyglycerin laurate of the present invention, and wherein the content of the polyglycerin condensed ricinoleate in the mixture is 15 to 60% by weight. The agent composition has excellent emulsifying power, is safe and has no toxicity. When the bath agent of the present invention is added and stirred into a bath tub with excellent emulsifying power, it is easily and uniformly dispersed throughout the hot water, no oil floats on the surface of the bath water, and is safe and harmless. It is safe and harmless when eaten, is gentle on the skin, has high biodegradability, and is excellent in safety. Further, the waste oil treatment composition of the present invention can be easily mixed with waste oil containing salt and the like such as used tempura oil, and can be made into a non-fluid grease state, and can be easily treated. The cosmetic composition of the present invention is safe and harmless, is gentle on the skin, and is stable without any change in the emulsion state even when left at room temperature for a considerable time. Furthermore, the surfactant composition of the present invention is useful for producing capsules containing fat-soluble health foods and fat-soluble drugs, which are uniform, highly transparent, have good emulsification, and have very good stability over time. Very good.

  The present inventors have conducted intensive studies in order to utilize polyglycerol fatty acid esters having excellent safety, and as a result, have found that the combination of polyglycerin fatty acid esters exhibits surprising emulsifying power and completed the present invention. That is, the present inventor has set forth a surfactant composition containing a polyglycerol ester in which the fatty acid of the polyglycerin fatty acid ester is lauric acid and a condensed ricinoleic acid, and particularly a surfactant composition in which the fatty acid of the polyglycerin fatty acid ester is lauric acid. Those containing polyglycerol ester of condensed ricinoleic acid at a specific ratio have very excellent emulsifying power and high safety, and furthermore, such surfactant compositions are used for bath agents. It has been found that it is very excellent as an emulsifier.

  The surfactant composition having such properties is useful as a waste oil treatment agent such as tempura oil, a cosmetic compounding agent, a food compounding agent, a pharmaceutical compounding agent, etc. by utilizing its strong emulsifying action with ease. In addition, the present inventor has made various studies to emulsify the maximum amount of fat-soluble health food and fat-soluble drug by using the extremely safe polyglycerin fatty acid ester in a minimum amount. The combination of polyglycerol condensed ricinoleate, a saturated fatty acid ester, and polyglycerin laurate, a polyglycerin saturated fatty acid ester, has excellent emulsifying power in a small amount and can maintain a low viscosity optimal for capsule filling. Was found.

  Thus, an object of the present invention is to provide a means for easily producing a capsule having good self-emulsifying properties from a fat-soluble health food or / and a fat-soluble drug with a small amount of an emulsified composition. The present invention relates to (1) a surfactant comprising a mixture of polyglycerin condensed ricinoleate and polyglycerin laurate, wherein the content of the polyglycerin condensed ricinoleate in the mixture is 15 to 60% by weight. A cosmetic composition comprising the composition.

  In the surfactant (1) of the cosmetic composition of the present invention, the content of the polyglycerol condensed ricinoleate is preferably in the range of 15 to 60% by weight, since the emulsifying effect is sufficiently exhibited, but it is preferable. Experiments have confirmed that when the content is less than 15% by weight or more than 60% by weight, the emulsifying action becomes insufficient. Further, the emulsifying action of the surfactant composition of the present invention is to maintain stable and good results against temperature change, salt concentration change, pH change, etc., and the fact is confirmed by some experiments. Has been confirmed. The surfactant composition of the present invention can be used in various fields by utilizing its safety and high emulsifying action.

  The surfactant composition of the present invention can also be used as a stabilizer such as gluten, an emulsifier or stabilizer such as fat, a wetting agent, a viscosity reducing agent, a dispersant, and a foam stabilizer. The product thus emulsifies, enhances its taste, texture and texture, prevents drying, improves viscosity loss, inhibits crystallization, stabilizes emulsions, separates fat, To prevent product precipitation, prevent sugar precipitation, prevent water loss, preserve fragrance, accelerate dissolution in water, assist in product reconstitution, prevent product aging, and stabilize dispersion. It is useful for improving the coloration, improving the dispersibility of various dyes, improving the coloring performance, and improving the flexibility.

  Furthermore, the present inventors have conducted intensive studies in order to utilize this highly safe polyglycerin fatty acid ester, and have found that the combination of the polyglycerin fatty acid ester and the polyglycerin fatty acid ester exerts a surprising emulsifying power. Has provided a bath agent comprising lauric acid and a polyglycerol ester of condensed ricinoleic acid.

  In the present invention, as the bath agent, those appropriately selected from components usually known as active ingredients of bath agents can be used. Active ingredients of such bath preparations include olive oil, safflower oil, jojoba oil, sclaren, skrawan, horse oil, vitamin A, vitamin D, vitamin E, collagen and the like. In addition, essential oil components of herbs, lipophilic components of crude drugs and the like can be mentioned. These components can be obtained as they are or by mixing an oily component dissolved in olive oil or the like with a polyglycerin fatty acid ester in a mixing ratio of the former and the latter, from 1: 0.05 to 200 parts by weight.

  Examples of medicinal plants include fennel, giant gourd, oak, chamomile, kouboku, fermented rice extract, peonies, jujuk, shobu, shokyo, senkyu, chimpanzee, capsicum, touki, carrot, yuzu, mugwort, aloe, alba, mint, etc. No. Plant essential oils include rose oil, jasmine oil, lavender oil, tuberose oil, orange oil, cinnamon oil, peppermint oil, patchouli oil, bergamot oil and the like. At that time, in consideration of the viscosity and compatibility of the bath agent, a small amount of water or ethanol, a small amount of other active ingredients, a fragrance, a dye, and the like can be added. The bath agent mixture thus obtained can be used as it is in a cosmetic container, filled in a soft capsule, made into a cream by adding water, or adsorbed on light silicic acid or the like and used as a powder.

  The polyglycerin fatty acid ester referred to in the present invention is obtained by esterifying various fatty acids to a polymer of two or more glycerins, and HLB is the degree of polymerization of glycerin, the molecular weight of fatty acids, the degree of esterification in the substance. Various HLB products in which fatty acids such as stearic acid, oleic acid, lauric acid, linoleic acid and condensed ricinoleic acid are mono-, tri-, penta- and deca-esters, etc. are added to tetraglycerin, hexaglycerin and decaglycerin. They can be used and they are commercially available and readily available.

  In one typical specific example of the bath agent composition of the present invention, for example, 5 g of squalane, 52 g of olive oil, 16 g of polyglycerin polycondensed ricinoleate (trade name: CRS-75, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.), decaglycerin monolaurate 16 g of (trade name: ML-750, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) and 8 g of tetraglycerin monolaurate (trade name: ML-310, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) are uniformly stirred and mixed, and finally a fragrance (Ogawa fragrance) (Manufactured by K.K.) and uniformly mixed to obtain 100 g of an oily bath agent. When 5 g of the present bath agent product was added to a bath filled with about 200 liters of hot water, it was promptly emulsified in the hot water and easily dispersed uniformly by gentle stirring. There was no oil floating on the bath water surface. On the other hand, the remaining 95 g of the bath agent was allowed to stand at room temperature for one month. However, a uniform state was maintained without causing layer separation, and the emulsifying properties were not changed at all.

  Furthermore, the present inventor has proposed a surfactant composition containing a glycerin ester of condensed ricinoleic acid, in which the fatty acid of the highly safe polyglycerin fatty acid ester is lauric acid, Providing a waste oil treating agent composition, cosmetic composition, food composition, and pharmaceutical composition by utilizing surprising emulsifying power as a result of intensive research to utilize a surfactant composition containing a specific ratio. I came to. The waste oil treating agent composition of the present invention may further contain other components such as a fragrance, a coloring agent, a bulking agent, a buffer, and a preservative, if necessary. As the edible oil as waste oil, vegetable oils and fats, animal oils and fats, and arbitrary mixtures thereof can be considered. As vegetable oils, olive oil, mustard oil, wheat germ oil, rice bran oil, sesame oil, safflower oil, soybean oil, corn oil, rapeseed oil, palm oil, sunflower oil, cottonseed oil, coconut oil, peanut oil, camellia oil, Cocoa oil and the like. Animal fats and oils include beef tallow, chicken fat, lard, sheep tallow, sardine oil, mackerel oil, taro oil, whale oil and the like.

  The cosmetic compositions of the present invention include those intended for cleaning shampoos, facial cleansers, toothpastes, body shampoos, etc., for example, creamy cosmetics such as cold creams and burnishing creams, basic cosmetics such as milky lotions and lotions, and finished cosmetics. For example, cosmetics for hair such as permanent wave, hair styling, hair liquid, and hair rinse can be used. As the food composition of the present invention, fats and oils and a hydrophilic substance are sufficiently and uniformly mixed to improve the appearance, flavor, tongue, and preservability of the product, and to improve and improve workability during production. Includes those used for For example, emulsifying or dispersing food ingredients, stabilizing emulsified food, defoaming, improving product cutting performance, improving mold release, and preventing sucrose crystallization. Used for It can be used for bread, cake, biscuit, caramel, chewing gum, chocolate, candy, ice cream, margarine, cheese, milk drink, mayonnaise, salad dressing, potato products, fish paste products, soy sauce, tofu products and the like. In addition, it can be used for solubilizing soft drink beverage turbidizers, fragrances, vitamins, and the like, and in the treatment of canned fruits. In the fermentation industry, it can also be used in miso, soy sauce, sake, beer brewing and others. The pharmaceutical composition of the present invention can be used for solubilization of fat-soluble drugs such as ointments, for example, emulsifying bases, emulsified products, and solubilization of poorly soluble drugs.

  The surfactant composition of the present invention has excellent emulsifying power, high safety, and is suitable for emulsifying foods, pharmaceuticals, and the like. It has been found that even when encapsulating a health food or a fat-soluble drug, it shows very excellent properties. In the present invention, there is provided a surfactant composition comprising a polyglycerin condensed ricinoleate and a polyglycerin laurate, wherein the content of the polyglycerin condensed ricinoleate in the composition is 15 to 60% by weight. A mixture with a fat-soluble health food, wherein the mixture ratio of the latter is 50% by weight or more and the mixture is filled in a capsule, or a health food composition or polyglycerin-condensed ricinoleate and polyglycerin laurate And a mixture of a surfactant composition having a polyglycerol condensed ricinoleate content of 15 to 60% and a fat-soluble drug, and filling the mixture into a capsule. A pharmaceutical composition comprising:

  In the present invention, the fat-soluble health food means a fat-soluble health-oriented food, such as vitamin E, α-carotene, β-carotene, lycopene, eicosapentaenoic acid, docosahexaenoic acid, squalene, γ-linolenic acid, Furthermore, natural oils containing these components as active ingredients, for example, vegetable oils such as soybean oil, wheat germ oil, Donariella disperse oil, lycopene-containing oil, tuna oil, mackerel oil, evening primrose oil, perilla oil, animal oil, fish oil, etc. There may be mentioned those selected from the group.

  In the present invention, the fat-soluble drug means a drug having a fat-soluble pharmaceutical activity or a fat-soluble pharmaceutical raw material, such as vitamin A, vitamin D, vitamin E, vitamin K, or acetic acid, butyric acid, Esters such as nicotinic acid and palmitic acid, fat-soluble derivatives of water-soluble vitamins such as CoQ7, CoQ9, CoQ10 (ubidecarenone), riboflavin tetranicotinate and ascorbic acid palmitate; antibiotics such as erythromycin and xanthamycin; Drugs that are substantially insoluble in water, such as oryzanol.

  In the present invention, the polyglycerin condensed ricinoleate used in the surfactant composition suitable for producing the capsule, the hydroxyl group and the carboxyl group in the ricinoleic acid molecule are partially condensed in advance with ricinoleic acid, and the condensate is obtained. Further, it means a product condensed with polyglycerin. Such polyglycerin condensed ricinoleate can be selected from commercially available ones, for example, SY Glister CR-ED, CR-310, CR-500, CRS-75 (all manufactured by Sakamoto Pharmaceutical Co., Ltd.) and the like. Is mentioned. According to Griffin's formula, the HLB of each of these is 2-3.

  These are obviously different from tetraglycerin polyricinoleate (HLB 0.5) disclosed in JP-A-61-12632 in terms of their HLB value and the presence or absence of condensation of ricinoleic acid itself. is there. In the present invention, the polyglycerin laurate used in the surfactant composition suitable for producing the capsule is a condensate of polyglycerin and lauric acid. Those having a low high HLB value, such as decaglycerin monolaurate, hexaglycerin monolaurate, and tetraglycerin monolaurate, are preferred.

  Polyglycerin-condensed ricinoleate and polyglycerol laurate used in the surfactant composition in the present invention, unlike esters with lower fatty acids, have excellent properties such as bitterness and do not affect taste. Can be Water or ethanol may be added to the composition of the present invention, if necessary. The compositions suitable for encapsulation according to the invention are particularly suitable for filling capsules, but are of course not limited to capsule filling only, for example by dispersing in water to give aqueous suspensions, emulsions, dispersions, jellies. Or adsorbed on a carrier such as dextrin or starch, or spray-dried and used as a powder.

Next, the present invention will be described more specifically with reference to examples.
Example 1
This example relates to the invention of a surfactant suitable for use as an emulsifier. As shown in Table 1, the emulsifying power was compared / experimented using a mixture of various kinds of polyglycerin fatty acid esters and an object to be emulsified such as olive oil as a test liquid. The mixing ratio of the former various polyglycerol fatty acid esters to the latter, such as olive oil, was 50:50 parts by weight of the former and olive oil or vitamin E, and 30 parts of squalane were mixed to prepare a test solution. Ubidecarenone as an object to be emulsified was prepared by weighing 100 mg of ubidecarenone in a beaker, dissolving it in a water bath at 60 ° C., and adding and mixing 1 g of a polyglycerin fatty acid ester mixture to prepare a test solution. After adding 2 to 3 drops of each of the test liquids thus obtained into a screw-mouth test tube containing about 20 ml of water, close the stopper, lightly shake up and down several times, and after 30 minutes, The emulsified state was observed. The results are shown in Tables 1 and 2.

  Evaluation at this time.段 階, ○, Δ and × were displayed in four stages. ◎ is `` good '', the oil does not float on the surface, the transparency of the emulsion is high, and even if it is cloudy, it is slight, and ○ is `` relatively good '' and it is strongly cloudy. The one with little oil floating on the surface, the one with な い is `` not good '', the one with poor emulsification such as an emulsion forming a layer or the cloudiness floating on the surface, and the one with `` bad '' , Little or no emulsification, respectively.

The symbols in Table 1 and the HLB values (values of the balance between lipophilicity and hydrophilicity) are as follows.
[Symbol] [HLB] [Component name]
CRS-75 3 polyglycerin polycondensed ricinoleate ML-750 15 decaglycerin monolaurate ML-500 13 hexaglycerin monolaurate ML-310 10 tetraglycerin monolaurate MCA-750 16 decaglycerin monocaprate FRL-1 13 decaglycerin Monolinoleate MO-500 11 Hexaglycerin monooleate MO-310 8 Tetraglycerin monooleate PO-500 4 Hexaglycerin pentaoleate PO-310 2 Tetraglycerin pentaoleate

  From the results shown in Tables 1 and 2, it was found that the combination of polyglycerin-condensed ricinoleate and another polyglycerin fatty acid ester was favorable as an emulsifier. Among them, it was found that the combination of the polyglycerin condensed ricinoleate and the polyglycerol laurate has a particularly good emulsifying power, and at the same time can be widely used for many emulsified objects.

  As can be seen from the results shown in Tables 1 and 2, in a combination other than the present invention, a sufficient emulsifying power is not exhibited even if a similar HLB is used. On the other hand, according to the present invention, by using a polyglycerin condensed ricinoleate which is low in HLB and is not generally used for O / W type emulsification, it becomes a kind of modifying solvent for lipophilic emulsified substances, In combination with polyglycerol laurate having high emulsification, it is considered that unexpected emulsifying power was exhibited.

Example 4
This example relates to the production of a soft capsule containing CoQ10 + natural vitamin E. 100 g of ubidecarenone (CoQ10), 1 kg of vitamin E (trade name: vitamin E5-67, manufactured by Eastman), 1 kg of polyglycerin polycondensed ricinoleate (trade name: SY Glister CRS-75, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.), decaglycerin 1 kg of monolaurate (trade name: ML-750, manufactured by Sakamoto Pharmaceutical Co., Ltd.) was mixed well while keeping the temperature at 30 ° C., and an oval soft gelatin capsule filled with 300 mg of this mixed solution per capsule was produced. The obtained capsule was easily emulsified and dispersed in an artificial gastric juice at 37 ° C. The stability over time was also very good.

Example 5
This example relates to the production of a water-soluble powdered fragrance. 10 g of spearmint oil, 10 g of polyglycerin polycondensed ricinoleate (trade name: SY Glister CRS-75, manufactured by Sakamoto Pharmaceutical Co., Ltd.), 10 g of decaglycerin monolaurate (trade name: ML-750, manufactured by Sakamoto Pharmaceutical Co., Ltd.) as an emulsifier and Dextrin (70 g) was added as an excipient to 200 ml of water, sufficiently emulsified and dispersed by a homogenizer (Polytron RT3000, manufactured by Kinematica), and then spray-dried to obtain a fine powder having very good water dispersibility. This product was a substitute for a water-soluble powdered flavor using gum arabic added as an emulsifier.

Example 6
This example is an example relating to production of a cosmetic emulsion. As a surfactant, 2 g of polyglycerin polycondensed ricinoleate (trade name: SY Glister CRS-75, manufactured by Sakamoto Pharmaceutical Co., Ltd.), 2.5 g of decaglycerin monolaurate (trade name: ML-750, manufactured by Sakamoto Pharmaceutical Co., Ltd.) , 5.5 g of tetraglycerin monolaurate (trade name: ML-310, manufactured by Sakamoto Pharmaceutical Co., Ltd.) and 20 g of squalane as a cosmetic base were mixed while keeping the temperature at 30 ° C., and then 400 ml of purified water was added to the mixture. Was added and stirred vigorously to produce a squalane emulsion. The obtained emulsion had a good feeling of use as a refreshment, and was allowed to stand at room temperature for 2 weeks. However, no change was observed in the emulsion state, and the emulsion stability was very good.

Example 7
A mixed oil of 2 parts by weight of vitamin E (trade name: vitamin E5-67, manufactured by Eastman Co.) and 8 parts by weight of evening primrose oil was prepared as an emulsification target. This mixed oil and various polyglycerin fatty acid esters shown in Table 3 were added in the amounts shown in Table 3 and mixed well. 6 to 8, 26 to 35 were prototyped. Each test solution was added to a 50 ml beaker containing 20 ml of water kept at about 35 ° C. in a 50 ml beaker, and an emulsified state was observed when the mixture was stirred several times with a microspatula. The test liquid having a viscosity higher than that of tetraglycerin monooleate having a viscosity of about 10,000 cps (trade name: SY-Glister-MO-310 manufactured by Sakamoto Yakuhin Kogyo) is filled with a rotary capsule filling machine. It was judged to be unsuitable for evaluation.

The results are shown in Table 3. As is clear from the table, the sample No. Nos. 26 to 29 are examples using a polyglycerol fatty acid ester having a high HLB of 13 or more, but all of them had a disadvantage that emulsification was slightly insufficient and the viscosity became extremely high. Sample No. In an example in which a low-LBB polyglycerin fatty acid ester having an HLB of 30 to 33 or less was used in combination, the viscosity was reduced but the emulsification was insufficient. Further, the sample No. In No. 34, when the mixing ratio of the emulsified object and the surfactant exceeds 50%, it is found that the viscosity increases and a problem occurs. Further, the sample No. In the case of No. 35, when the mixing ratio of the polyglycerin polycondensed ricinoleic acid in the emulsifier composition is reduced from 20% to 10%, the emulsification becomes poor.
In addition, "MO-750" in Table 3 means decaglycerin monooleate. In addition, in the column of emulsified state, ○ indicates that emulsification was very good. X: Hardly emulsified. [Delta] indicates that the viscosity is high and the material is hardened and hardly emulsified. Or, it disperses, but the emulsification is insufficient, and the oil floats on the surface after a while. In the column of viscosity, ○ means that the viscosity is lower than that of the control tetraglycerin monooleate, and the filling suitability is good. X is higher than the viscosity of the control tetraglycerin monooleate and poor in filling suitability. In the column of pass / fail of the comprehensive judgment, ○ means that both emulsification and viscosity are very good. △ indicates that there is room for improvement in either emulsification or viscosity. × indicates that both emulsification and viscosity are poor. , Respectively.

Example 8
Using fish oil containing 27% DHA as an emulsifying target, emulsification was studied using various polyglycerin fatty acid esters. As a result, high HLB decaglycerin oleic acid, lauric acid, linoleic acid, and stearic acid monoesters suitable for O / W emulsification alone or in combination with low HLB tetraglycerin pentaoleate are: On standing, all mixtures of any system separated into two layers within one day and night. On the other hand, 26 g of tetraglycerin monolaurate, 14 g of polyglycerin polycondensed ricinoleate (trade name: SY Glister CRS-75, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) (content of 35% in surfactant), which is a formulation of the present invention, fish oil The mixture of 60 g (60% of the content in the mixture for filling capsules) was a uniform transparent liquid, had no layer separation, and was very good in both emulsified state and viscosity.

Example 9
80 kg of squalene (content 80% in the mixture for filling capsules), 6 kg of decaglycerin monolaurate, 8 kg of tetraglycerin monolaurate, 6 kg of polyglycerin polycondensed ricinoleate (content 30% in surfactant) were mixed well. An oval soft gelatin capsule was prepared by filling this mixture with a rotary automatic capsule filling machine at 250 mg per capsule. The production could be carried out very smoothly, the weight of the obtained capsules was uniform without variation, the transparency was high, the emulsification was good, and the stability over time was also very good.

Example 10
70 kg of dl-α-tocophenol acetate (manufactured by Roche), 15 kg of decaglycerin monolaurate, and 15 kg of polyglycerin polycondensed ricinoleate were mixed well, and 600 mg per capsule was filled with a rotary automatic capsule filling machine in the same manner as in Example 9. Oblong soft gelatin capsules were manufactured. The production was carried out very smoothly, there was no variation in the weight of the obtained capsules, the emulsified state was good, and the stability over time was also very good.

Claims (1)

It is a mixture of a polyglycerin condensed ricinoleate and a polyglycerin laurate, and contains a surfactant composition in which the content of the polyglycerin condensed ricinoleate is 15 to 60% by weight. A cosmetic composition comprising: