JP6976543B2 - Foaming emulsifying composition, foaming composition, foaming material, method for improving foaming property, foaming property improving agent, and method for adjusting foam hardness. - Google Patents

Description

The present invention relates to a foaming emulsifying composition, a foaming composition, a foaming substance, a method for improving foaming property, a foaming property improving agent, and a method for adjusting foam hardness.

Conventionally, a surfactant has been used for foaming foam, whipped cream and the like. For example, Patent Document 1 discloses a foaming composition containing two types of nonionic surfactants.

Japanese Unexamined Patent Publication No. 2015-221783

However, although the surfactant is excellent in the ability to form bubbles, for example, when applied to the human body, there is a problem such as strong irritation, so that high foaming property can be obtained without using the surfactant. There was a need for a way to have it.

The present invention has been made in view of the above circumstances, and is a novel foaming emulsifying composition, foaming composition, foaming material, foaming which can obtain high foaming property without using a surfactant. It is an object of the present invention to provide a method for improving the property and a foaming property improving agent. Another object of the present invention is to provide a method for adjusting the hardness of foam.

Unexpectedly, the present inventors have found that the emulsifier used in the three-phase emulsification method can obtain high foaming property, and have completed the present invention. More specifically, the present invention provides the following.

(1) A foaming emulsifying composition containing an oil phase, an aqueous phase, and particles of a polycondensation polymer having a closed endoplasmic reticulum or a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed endoplasmic reticulum. thing.

(2) The foamable emulsifying composition according to (1), wherein the oil phase contains a solid oil.

(3) The foamable emulsifying composition according to (1) or (2), wherein the oil phase contains a liquid oil.

(4) The foaming emulsifying composition according to any one of (1) to (3), which is for foods, cosmetics, pharmaceuticals, detergents or functional agents.

(5) A foamable composition containing an aqueous phase and particles of a polycondensation polymer having a closed endoplasmic reticulum or a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed endoplasmic reticulum.

(6) A foamed product in which the composition according to any one of (1) to (5) is foamed.

(7) The foam according to (6), which has an air content of 50% or more.

(8) The composition containing the oil phase and the aqueous phase further contains particles of a closed endoplasmic reticulum or a polycondensation polymer having a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed endoplasmic reticulum. By doing so, a method of improving foaming property.

(9) By further containing the closed vesicles formed by the amphipathic substance that spontaneously forms the closed vesicles or the particles of the polycondensation polymer having a hydroxyl group in the composition containing the aqueous phase. A method for improving foaming properties.

(10) A foaming agent composed of particles of a polycondensation polymer having a closed vesicle or a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed vesicle.

(11) Containing an oil phase containing solid oil and liquid oil, an aqueous phase, and particles of a closed vesicle or a polycondensed polymer having a hydroxyl group formed by an amphoteric substance that spontaneously forms a closed vesicle. A method for adjusting the hardness of foam by changing the content ratio of solid oil and liquid oil in a foamable emulsifying composition.

According to the present invention, high foaming property can be obtained without using a surfactant.

Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.

<Foamable emulsifying composition>
The emulsified composition of the present invention contains an oil phase, an aqueous phase, and particles of a closed vesicle or a polycondensed polymer having a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed vesicle. According to the foaming emulsifying composition, high foaming property can be obtained without using a surfactant. Further, the foamable emulsifying composition of the present invention is superior in foam stability to the surfactant. The "foaming emulsifying composition" refers to an emulsifying composition used by foaming.

The foamable emulsifying composition of the present invention is based on a so-called three-phase emulsification method using closed vesicles formed by an amphipathic substance that spontaneously forms closed vesicles or particles of a polycondensation polymer having a hydroxyl group. It is a foaming emulsifying composition.

As described above, a surfactant has been conventionally used for foaming. Since the molecular structure of this surfactant has an amphipathic structure, in the case of a water-soluble molecule, it is oriented and adsorbed at the interface formed between the other phases in contact with water. Therefore, at the gas-liquid interface in contact with the gas phase, the molecules are oriented and adsorbed at any surfactant molecule to form an “adsorbed monomolecular layer”. At the oil-water interface as well as the gas-liquid interface, orientation adsorption is performed in the same manner to form an adsorbed monomolecular layer. These adsorption molecular membranes always have a reversible adsorption equilibrium (microseconds) with the activator molecules in the aqueous solution. As a result, the interfacial tension can be reduced. The formation of bubbles by foaming is constructed by the action of this adsorbed monolayer.

On the other hand, in the three-phase emulsification method, closed vesicles formed by an amphipathic substance that spontaneously forms closed vesicles or particles of a polycondensed polymer having a hydroxyl group are interposed at the oil-water interface to form a fan. It enables emulsification by adhering to the oil phase by the Delwars force. Three-phase emulsification is completely different from emulsification with a surfactant that lowers the interfacial tension by a hydrophilic group and a hydrophobic group, and does not form an "adsorbed monomolecular film" like the above-mentioned surfactant. It was not considered to be foamy. However, we have unexpectedly found that three-phase emulsified particles provide higher foaming properties.

The reason why the three-phase emulsified particles of the present invention can foam is presumed to be the following reasons.

Since the three-phase emulsified particles are hydrophilic nanoparticles, the emulsion made of the three-phase emulsified particles has a water retention site on the three-phase emulsified particles side. The water retention sites of the three-phase emulsified particles or the three-phase emulsified emulsion are connected, a network structure is formed by the three-phase emulsified particles or the three-phase emulsion, and air is held in the gaps to contain the leak. As a result, it is presumed that bubbles can be formed and then stabilized.

In addition, foaming with a conventional surfactant requires a surfactant, a thickener, a foam retainer, and a solid oil at the same time, and especially when hardness such as whipped cream is required, the solid oil is used. Long-term formation and retention is required. However, in this case, it is extremely difficult to maintain the shape for a long time because the foam contains water. On the other hand, in the present invention, when solid oil is used, once foamed to form a shape, and when left to stand, an interaction is formed between the three-phase emulsion particles even if it contains water. A network structure is formed between the emulsified particles, and it is possible to maintain the shape of the firm foam. Therefore, the present invention can be foamed only with three-phase emulsified particles and solid oil, and is suitable for maintaining the shape of foam for a long period of time when solid oil is used. This phenomenon is similar to the phenomenon seen in hydrophobic particles called thixotropy, and it is considered that this phenomenon similar to thixotropy is suitable for maintaining the shape of hard foam for a long period of time when solid oil is used.

In addition, the surfactant cannot form a phase by itself, cannot exist as an independent phase thermodynamically, and is a dependent phase. Therefore, the emulsion made of a surfactant cannot maintain its state when it comes into contact with the gas phase (foam). On the other hand, since the three-phase emulsified particles can exist as an independent phase thermodynamically, the state can be maintained even if the emulsion formed by the three-phase emulsified particles comes into contact with the gas phase (foam). From this, it is presumed that the three-phase emulsified particles have higher foam stability than the surfactant.

The form of the emulsified composition of the present invention is not particularly limited, and may be an O / W type emulsion structure or a W / O type emulsion.

Whether or not the particles can be emulsified in three phases can be determined by light scattering measurement of the hydrophilic nanoparticle dispersion liquid used for emulsification and the average particle size being, for example, 8 to 400 nm. Further, the prepared emulsion can be judged by observing with an atomic force microscope (AFM) and confirming that the emulsifier particles are attached to the surface of the oil droplet.

(Oil phase)
The oil contained in the oil phase in the present invention is not particularly limited, and either solid oil or liquid oil is suitable. In particular, the present invention can hold a hard oil for a long time when a solid oil is used. When solid oil is used, it is suitable for applications where hardness is required, such as whipped cream. On the other hand, when liquid oil is used, it is suitable for applications requiring softness such as cosmetics. The solid oil and the liquid oil mean that they are solid oil and liquid oil at room temperature (20 to 25 ° C.), respectively.

Further, the foamable emulsion of the present invention may contain both solid oil and liquid oil, whereby the hardness of the foam can be adjusted. For example, by increasing the amount of solid oil, the foam can be hardened, and by decreasing the amount of solid oil, the foam can be softened.

The solid oil is not particularly limited as long as it is a solid oil at room temperature, but for example, solid oil (hydrogenated palm oil, palm oil, hardened palm oil, coconut butter, peanut butter, lard, milk fat, etc.), solid paraffin. , Wax, higher alcohol (behenyl alcohol, stearyl alcohol, cetyl alcohol, batyl alcohol, octyldodecanol, oleyl alcohol, etc.), wax (carnauba wax, honeydew, etc.) and the like.

The liquid oil is not particularly limited as long as it is a liquid oil at room temperature, but for example, vegetable oil (olive oil, avocado oil, camellia oil, macadamia nut oil, evening primrose oil, jojoba oil, rapeseed oil, egg yolk oil, sesame oil, castor oil). , Saflower oil, cottonseed oil, soybean oil, teaseed oil, rice bran oil, wheat germ oil, germ oil, peanut oil, sunflower oil, almond oil, turtle oil, corn oil, mink oil, persic oil, Southernka oil, flaxseed oil , Eno oil, kaya oil, etc.), animal oil (beef fat, pork fat, milk fat, etc.), medium-chain fatty acid triglyceride, hydrocarbon oil (squalene, squalane, liquid paraffin, etc.), ester oil (ethylhexyl methoxycinnamate, cetyl ethylhexanate, etc.) , Diisostearyl malate, isopropyl myristate, ethylhexyl palmitate, octyl palmitate, octyl isopalmitate, isononyl isononanoate, isotridecyl isononanoate, methylheptyl laurate, hexyl laurate, tri (capricyl / capric acid) glyceryl , Triethylhexanoin, neopentyl recall dicaprate, cetyl octanate, isocetyl stearate, isopropyl isostearate, isodecyl oleate, glyceryl tri2-ethylhexanoate, pentaerythritte tetra2-ethylhexanoate, 2-ethylhexyl succinate , Sebacate diethyl, etc.), Silicone oil (cyclopentasiloxane, decamethylcyclopentasiloxane, methylpolysiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, dodecamethylcyclohexasiloxane) Etc.) etc.

The content of oil with respect to the total mass of the emulsified composition in the present invention is not particularly limited, and can be appropriately selected depending on the form of the emulsified composition, the type of oil, and the intended use. According to the emulsified composition in the present invention, the larger the amount of oil, the higher the foaming property can be obtained. Therefore, for example, 20% by mass or more (30% by mass or more, 40% by mass or more, 50% by mass or more, 70). It may be mass% or more, 80% by mass or more, etc.). Further, the oil content with respect to the total mass of the emulsified composition in the present invention is 70% by mass or less (60% by mass or less, 50% by mass or less, 40% by mass or less, 30% by mass or less, 20% by mass or less, 10% by mass). % Or less, 5% by mass or less, etc.).

(Water phase)
According to the closed endoplasmic reticulum or polycondensation polymer particles in the present invention, bubbles can be stabilized even in a small amount. Therefore, the amount of water in the emulsified composition is large and can be widely selected from the range of 0.1 to 95% by mass, and can be appropriately set according to the form of the emulsified composition and the amount of the oil phase. For example, it is preferably 10 to 90% by mass, more preferably 30 to 80% by mass.

(Closed endoplasmic reticulum or polycondensation polymer particles)
The closed endoplasmic reticulum in the present invention is formed by an amphipathic substance that spontaneously forms the closed endoplasmic reticulum. Examples of the amphoteric substance forming the closed vesicles include a polyoxyethylene hydrogenated castor oil derivative represented by the following general formula 1 or a dialkylammonium derivative, a trialkylammonium derivative, and a tetraalkyl represented by the general formula 2. It is advisable to employ an ammonium derivative, a dialkenylammonium derivative, a trialkenylammonium derivative, or a derivative of a halogen salt of a tetraalkenylammonium derivative.

General formula 1

In the formula, E, which is the average number of moles of ethylene oxide added, is 3 to 100. When E becomes excessive, the type of good solvent that dissolves the amphipathic substance is limited, so that the degree of freedom in producing hydrophilic nanoparticles is narrowed. From this, the upper limit of E is preferably 50, more preferably 40. The lower limit of E is preferably 5 or more, more preferably 10 or more, still more preferably 20 or more, and most preferably 30 or more because the foaming property is improved.

General formula 2

In the formula, R1 and R2 are independently alkyl groups or alkenyl groups having 8 to 22 carbon atoms, R3 and R4 are independently hydrogen or alkyl groups having 1 to 4 carbon atoms, respectively, and X is F, Cl, Br, I or CH ₃ COO.

Alternatively, a phospholipid, a phospholipid derivative, or the like may be adopted. As the phospholipid, among the configurations represented by the following general formula 3, DLPC (1,2-Dilauroyl-sn-glycero-3-phospho-rac-1-choline) having a carbon chain length of 12 and a carbon chain length of 14 are used. DMPC (1,2-Dipalmitoyl-sn-glycero-3-phospho-rac-1-choline), DPPC with a carbon chain length of 16 (1,2-Dipalmitoyl-sn-glycero-3-phospho-rac-1-choline) Can be adopted.

General formula 3

Also, of the structure shown by the general formula 4 below, Na salts or NH ₄ salts of DLPG of carbon chain length 12 (1,2-Dilauroyl-sn- glycero-3-phospho-rac-1-glycerol), carbon DMPG chain length 14 (1,2-dimyristoyl-sn- glycero-3-phospho-rac-1-glycerol) Na salt or NH ₄ salt, DPPG (1,2-Dipalmitoyl-sn -glycero carbon chain length 16 -3-phospho-rac-1- glycerol and Na salts or NH ₄ salts may be employed in).

General formula 4

Further, as the phospholipid and the phospholipid derivative, lecithin (natural lecithin, hydrogenated lecithin, etc.) can be used.

As the amphipathic substance, lysine Na dilauroyl glutamate, a polyglycerin fatty acid ester, and a sugar ester (sucrose fatty acid ester, etc.) can also be used.

The polycondensation polymer having a hydroxyl group is not particularly limited, and may be either a natural polymer or a synthetic polymer, and may be appropriately selected depending on the intended use. However, natural polymers are preferable because they are excellent in safety and generally inexpensive, and sugar polymers described below are more preferable because they are excellent in emulsifying function. The particles include either a single particle of the polycondensation polymer or a series of the single particles, but do not include an agglomerate (having a network structure) before being made into a single particle. For example, "polysaccharides" before being made into single particles are not made into particles, but form a network structure by hydrogen bonds, so that they have so-called three-phase emulsifying ability, "polycondensation polymer particles". Is clearly different. As the polycondensation polymer having a hydroxyl group, only one kind may be used alone, or two or more kinds may be used in combination.

The sugar polymer is a polymer having a glucoside structure such as cellulose and starch. For example, among monosaccharides such as ribose, xylose, ramnorth, fucose, glucose, mannose, glucuronic acid, and gluconic acid, those produced by microorganisms with some sugars as constituents, xanthan gum, arabic gum, guar gum, karaya gum, and carrageenan. , Pectin, fucoidan, quinceed gum, tranth gum, locust bean gum, galactomannan, curdran, gellan gum, fucogel, casein, gelatin, starch, collagen, natural polymers such as white jellyfish polysaccharide, methyl cellulose, ethyl cellulose, methyl hydroxypropyl cellulose. , Carboxymethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, stearoxy hydroxypropylmethyl cellulose, sodium carboxymethyl cellulose, propylene glycol alginate, cellulose crystals, starch / sodium acrylate graft polymer, hydrophobic hydroxypropyl Examples thereof include semi-synthetic polymers such as methyl cellulose. Further, in addition to the sugar polymer, synthetic polymers such as polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, polyacrylate, and polyethylene oxide can be used. These may be used alone or in combination of two or more.

As the sugar polymer, hydroxyethyl cellulose, stearoxyhydroxypropylmethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, guar gum, or salts thereof are preferably used, and hydroxyethyl cellulose is particularly preferable.

The closed endoplasmic reticulum or polycondensation polymer particles in the present invention may have an average particle size of, for example, about 8 nm to 2000 nm, but the smaller the particle size, the better the foaming property. From this, the average particle size is preferably 8 nm or more and 800 nm or less, and more preferably 8 nm or more and 500 nm or less. As disclosed in Japanese Patent No. 3855203 and the like, these preparation methods are omitted because they are conventionally known as methods for preparing particles having a three-phase emulsifying ability.

The amount of the closed endoplasmic reticulum or the polycondensation polymer particles may be appropriately set according to the amount of the oil phase, and is not particularly limited, but may be 0.0001 to 10% by mass in total. In particular, in the case of closed vesicles, unlike conventional surfactants, closed vesicles or polycondensation polymer particles have excellent foaming stability, and therefore, 5% by mass or less (specifically, 4% by mass or less, Even a small amount of 3% by mass or less, 2% by mass or less, 1.0% by mass or less, 0.75% by mass or less) can maintain the foam state. In particular, when liquid oil is used, the foam tends to be more stable when the amount of closed endoplasmic reticulum or polycondensation polymer particles is large. The above amounts are all solid content. Further, the larger the amount of closed vesicles or polycondensed polymer particles, the higher the foaming property. Therefore, it is preferably 0.10% by mass or more, preferably 0.30% by mass, based on the total mass of the emulsified composition. It is more preferably 0% by mass or more, further preferably 0.50% by mass or more, particularly preferably 1.0% by mass or more, and even more preferably 2.0% by mass or more.

The average particle size of the internal phase of the emulsified composition in the present invention is not particularly limited and may be, for example, 0.1 μm or more. However, since the emulsified composition in the present invention is based on three-phase emulsification. Compared with the conventional emulsification using a surfactant, it is possible to make the size of the average particle size in a wide range. For example, when the emulsified composition in the present invention has an O / W type emulsion structure, the average particle size of the oil phase, which is the internal phase, may be appropriately set according to the purpose and use, but for example, the internal phase. The average particle size is preferably 50 μm or less, more preferably 25 μm or less, and even more preferably 10 μm or less. The average particle size of the internal phase is measured by a concentrated particle size analyzer FPAR-1000 (manufactured by Otsuka Electronics Co., Ltd.).

The emulsified composition of the present invention may contain a conventional foam retainer, but has sufficient foaming stability even if it does not contain it. Examples of the foam retainer that can be contained in the emulsified composition of the present invention include thickeners, skim milk powder and the like, but are not particularly limited.

Examples of the thickener include polysaccharides, proteins (milk-derived protein, egg-derived protein, wheat protein, soybean-derived protein), gelatin, agar and the like. These thickeners may be used alone or in combination of two or more. However, for the purpose of preventing allergies, it is preferable not to contain a thickener (for example, protein) which is an allergen. Types of polysaccharides include, for example, starch (tapioca starch, rice starch, potato starch horse bell starch, sweet potato starch, wheat starch, sago starch, etc.), starch derivatives (metal salt of alkenyl succinate starch (sodium octenyl succinate starch, octenyl succinate starch). Aluminum, etc.), alkyl starch (methyl starch, ethyl starch, etc.), carboxyalkyl starch (carboxymethyl starch, carboxyethyl starch, etc.), hydroxyalkyl starch (hydroxyethyl starch, hydroxypropyl starch, etc.), metallic hydrochloric acid of hydroxyalkyl phosphate. Chemical starch (sodium hydroxypropyl phosphate, etc.), acetyl starch, aminoacetyl starch, allyldemp, etc.), dextrin, alginic acids (sodium alginate, potassium alginate, alginate ester (propylene glycol alginate, etc.), etc.), agar, guar gum, locust Bean gum, tara gum, phenuglique gum, tamarind gum, glucomannan, starch, xanthan gum, gellan gum, κ caraginan, ι caraginan, λ caraginan, farcerelan, cassia gum, curdran, queens seed, arabic rubber, succinoglucan, glycosamino Examples thereof include glycans and cellulose-based polymers (methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, etc.). The thickener may be used alone or in combination of two or more.

The content of the foam retainer (thickening agent, defatted milk powder, etc.) in the present invention is not particularly limited, and may be, for example, 0.1 to 20% by mass with respect to the total mass of the composition. As described above, since it has sufficient foaming stability even if it is not contained, for example, its content is 10% by mass or less (5% by mass or less, 4% by mass or less, 3% by mass or less, 2% by mass or less). , 1% by mass or less, 0.5% by mass or less, 0.1% by mass or less, 0.01% by mass or less, 0).

In addition to the components other than the above, the emulsified composition in the present invention may or may not contain a fragrance, a pH adjuster, a preservative, a colorant, an antioxidant, a surfactant and other emulsifiers in combination. good. However, from the viewpoint of suppressing irritation when applied to the human body, the content of the surfactant in the emulsified composition is preferably small, for example, 10% by mass or less with respect to the total mass of the emulsified composition. (5% by mass or less, 1% by mass or less, 0.1% by mass or less, 0.05% by mass or less, 0.01% by mass or less, etc.), and the emulsified composition does not contain a surfactant. Is more preferable.

The use of the emulsified composition of the present invention is not particularly limited as long as it is used by foaming, but for example, foods (whipped cream, dressing, soy sauce, pons vinegar, etc.), cosmetics (cleansers, shampoos, hair styling products, etc.) Etc., cleansing agents, etc.), non-pharmaceutical products, pharmaceuticals, animal products (pet products, etc.), industrial products (cleansing agents, etc.), functional agents (antioxidants such as vitamin E, etc.) Etc. can be used. Of these, the emulsified composition of the present invention is particularly suitable for foods, cosmetics, pharmaceuticals, detergents, and functional agents.

As the emulsified composition, a dispersion containing closed endoplasmic reticulum or polycondensation polymer particles and an oily component can be mixed to prepare an emulsion (for example, O / W type emulsion). The water-soluble optional component may be added before emulsification, before mixing, or after mixing.

<Foamable composition>
The present invention includes a foamable composition containing an aqueous phase and particles of a polycondensation polymer having a closed vesicle or a hydroxyl group formed by an amphoteric substance that spontaneously forms a closed vesicle. The "foaming composition" refers to a composition used by foaming.

Although the above-mentioned foamable emulsifying composition contains an oil phase, the present inventors have surprisingly found that, according to the three-phase emulsified particles, foaming can be performed without containing oil. It is presumed that the reason is that the three-phase emulsified particles can exist as an independent phase instead of a dependent phase, unlike the surfactant as described above.

The foamable composition of the present invention can have the same composition (ingredient, content, use) as the above-mentioned foamable emulsified composition except for the oil phase.

The foamable composition of the present invention is suitable for use in a foaming product containing or not containing oil, for example, for gas supply (foaming with a gas to be supplied (carbon dioxide gas or the like)). It is suitable for the purpose of supplying the gas, for skin, especially for scalp blood circulation promoting spray, etc. for cosmetics) and for fire extinguishers (drugs inside the digestive organs, that is, for carbon dioxide gas fire extinguishers, etc.).

<Foam material>
The present invention includes the above-mentioned foaming emulsifying composition or foamed product in which the foaming composition is foamed.

The foaming product can be produced, for example, by stirring the above-mentioned foaming emulsifying composition or foaming composition with a millet stand (for example, an electric millet stand) for 10 to 15 minutes. In particular, when the fat and oil contains a solid oil component, it is preferable to sufficiently cool the above-mentioned foaming emulsifying composition or foaming composition, and it is preferable that stirring is also performed at room temperature or ice water cooling. Since the foaming composition does not contain oils and fats, it does not need to be cooled.

In the present invention, the above-mentioned foaming emulsifying composition or foaming composition is excellent in foaming property, so that a foamed product having a high air content can be produced. For example, the foamed product of the present invention can have an air content of 50% or more (55% or more, 60% or more, etc.). In the present invention, the air content (% by volume) is calculated by the following formula (1).

_{Further, the VA} in the above formula (1) is measured as follows.

First, foaming was loaded onto a known volume of the vessel (V _T), to measure the weight of the foaming material. The weight of the air is set to 0, the weight of the measured foaming material is the weight of the foamable emulsion composition contained in a container (or the foamable composition) (W _H). (W _H) and foaming emulsifying composition (or the foamable composition) was calculated volume of the composition in a container from the specific gravity (d _E) of, V _A by subtracting the calculated value from the V _T Ask for. Foaming emulsified composition specific gravity (or foaming composition) (d _E) is foaming emulsion composition prior to foaming in a constant volume of the container (V _T) (or the foamable composition) filled, weight _{(W E)} (. to the weight of the foamable emulsified composition when the volume of the composition before foaming is V _T (or foaming _composition) (W E)) It is measured and calculated by _{dividing by the container volume (VT} ). _{(D E),} relationship _{(V T), (W E} ), (V A), (W H) is as illustrated in formula shown below.

The use of the foamed product of the present invention is not particularly limited, but for example, foods (whipped cream, dressing, soy sauce, ponzu, etc.), cosmetics (washing pigments, shampoos, hair styling products, cleansing agents, etc.), quasi-drugs, etc. , Pharmaceuticals, animal products (pet products, etc.), industrial products (cleansing agents, etc.), functional agents (antioxidants such as vitamin E, etc.). Of these, the foamed product of the present invention is particularly suitable for foods, cosmetics, pharmaceuticals, detergents, and functional agents.

<Method of improving foaming property>
The present invention includes a method for improving foaming property.

The method of the present invention is a polycondensation polymer particle having a closed vesicle or a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed vesicle in a composition containing an oil phase and an aqueous phase. It is a method of improving foaming property by containing. Alternatively, the method of the present invention further comprises particles of a closed vesicle or a polycondensation polymer having a hydroxyl group formed by an amphipathic substance that spontaneously forms a closed vesicle in a composition containing an aqueous phase. It is a method of improving foaming property by containing it. In addition, "improvement of foaming property" refers to at least one of improving foaming and improving the stability of foamed foam.

In the present invention, as the oil phase and the aqueous phase, the same foaming emulsifying composition or foaming composition as described above can be used. In the present invention, the closed endoplasmic reticulum and the particles of the polycondensation polymer can be the same as the foaming emulsifying composition or the foaming composition described above.

<Foamability improver>
The present invention includes a foaming improver consisting of closed vesicles formed by an amphipathic substance that spontaneously forms closed vesicles or particles of a polycondensation polymer having a hydroxyl group.

"Improvement of foaming property" refers to an application used for at least one of improving foaming and improving the stability of foamed foam.

In the present invention, the closed endoplasmic reticulum and the particles of the polycondensation polymer can be the same as the foaming emulsifying composition or the foaming composition described above.

<How to adjust the hardness of foam>
The present invention comprises an oil phase containing solid oil and liquid oil, an aqueous phase, and particles of a closed vesicle or a polycondensed polymer having a hydroxyl group formed by an amphoteric substance that spontaneously forms a closed vesicle. The foaming emulsifying composition to be contained includes a method of adjusting the hardness of foam by changing the content ratio of solid oil and liquid oil.

In the present invention, by increasing the content ratio of solid oil, the foam generated when the foaming emulsifying composition is foamed can be adjusted firmly, and by decreasing the content ratio of solid oil, foaming emulsification can be performed. The foam generated when the composition is foamed can be adjusted to be soft.

<Preparation of foaming composition>
(Reference example 1)
An aqueous solution was prepared by dissolving 10 mg of sodium lauryl sulfate (SDS), an anionic surfactant, in 50 g of water, and this was used as the composition according to Reference Example 1.

(Reference example 2)
An aqueous solution was prepared by dissolving 10 mg of the nonionic surfactant polyoxyethylene lauryl ether (C ₁₂ (EO) ₁₂ ) in 50 g of water, and this was used as the composition according to Reference Example 2.

(Example 1)
Using closed vesicles of decaglyceryl distearate (2S10G) as three-phase emulsified particles, a dispersion of 2% by mass decaglyceryl distearate was prepared, and this was used as the composition according to Example 1.

(Example 2)
Using particles of stearoxyhydroxypropylmethylcellulose as the three-phase emulsified particles, a dispersion of 0.25% by mass of stearoxyhydroxypropylmethylcellulose was prepared, and this was used as the composition according to Example 2.

(Example 3)
Using closed endoplasmic reticulum of a derivative of polyoxyethylene hydrogenated castor oil (HCO-40) as three-phase emulsified particles, a dispersion of a 2% by mass polyoxyethylene hydrogenated castor oil derivative (HCO-40) was prepared. Was used as the composition according to Example 3.

(Example 4)
Using closed endoplasmic reticulum of sucrose stearic acid sucrose ester (Mitsubishi Chemical Foods S-1670) as three-phase emulsified particles, a dispersion of 2% by mass sucrose stearic acid sucrose ester was prepared, and this was used in Example 4. The composition according to the above.

<Evaluation 1>
The compositions according to Reference Examples 1 and 2 and Examples 1 to 4 described above were foamed by an electric millet stand to prepare each foamed product, and allowed to stand at room temperature to evaluate the stability of the foam. did. For the evaluation of the stability of the bubbles, the presence or absence of running water from the lower part was visually confirmed after each was allowed to stand still.

As a result, in Reference Examples 1 and 2, the bubbles completely disappeared after 1 day. On the other hand, in Examples 1 and 4, bubbles remained almost even after the lapse of 3 days. From this result, it was found that the three-phase emulsified particles had higher foam stability than the surfactant. It was also found that the foam can be stably retained without oil. The foam retention of Examples 2 and 3 was slightly lower than that of Examples 1 and 4, but bubbles remained.

Further, when the air content of the composition according to each example was measured after foaming, it was found to be 87.3% in Example 1, 55.0% in Example 2, and 88.7% in Example 3. In Example 4, it was 91.8%. From this, it was also found that foaming was good when foamed with three-phase emulsified particles.

<Preparation of whipped cream 1>
(Example 5)
Using closed vesicles of decaglyceryl distearate (2S10G) as three-phase emulsified particles, a dispersion of 4.75% by mass decaglyceryl distearate (2S10G) was prepared, and medium-chain fatty acid triglyceride (2S10G) was added to this dispersion. MCT) was added to a final concentration of 20% by mass, and then the three-phase emulsified composition according to Example 5 of the O / W type emulsion was prepared.

(Example 6)
Using closed endoplasmic reticulum of decaglyceryl distearate (2S10G) as three-phase emulsified particles, a dispersion of 2% by mass of decaglyceryl distearate (2S10G) was prepared, and palm oil was added to the dispersion at a final concentration of 40% by mass. After addition, the three-phase emulsified composition according to Example 6 of the O / W type emulsion was prepared.

<Evaluation 2>
The compositions according to Examples 5 and 6 were foamed in the same manner as in Evaluation 1 and evaluated. As a result, it was found that there was no water separation even after 1 day, and the foam stability was high.

<Evaluation 3>
A three-phase emulsified composition (Example 7) was prepared by the same method as in Example 5 except that the final concentration of decaglyceryl distearate (2S10G) in the composition according to Example 5 was 2% by mass. .. The three-phase emulsified composition containing the liquid oil (MCT) of Example 7 and the three-phase emulsified composition containing the solid oil (purp oil) of Example 6 were prepared at 25:75, 50:50 and 75, respectively. The mixture was mixed so as to have a ratio of 25 to prepare three mixed triemulsified compositions having different liquid oils and solid oils.

As a result, the mixed triemulsified composition of liquid oil: solid oil = 25:75 became slightly softer than that of Example 6, and the mixed triemulsified composition of liquid oil: solid oil = 50:50 became softer. The mixed triemulsified composition of liquid oil: solid oil = 75:25 became softer and became a soft cream. From this result, it was found that the hardness of the foam can be adjusted by changing the content ratio of the liquid oil and the solid oil.

<Preparation of whipped cream 2>
(Examples 8 to 17)
Using a dispersion of 2% by mass decaglyceryl distearate (2S10G), each oil, skim milk powder, and citric acid were added so as to be as prescribed in Table 1 described later, and the three phases according to Examples 8 to 17 were added. An emulsified composition was prepared and further used to prepare each foam.

<Evaluation 4>
The compositions according to Examples 8 to 17 were foamed by the same method as in Evaluation 1 and evaluated. As a result, it was found that there was no water separation even after 1 day, and the foam stability was high. Moreover, when the air content was also measured, it was found that all of them had an air content of 50% or more.

Claims (11)

A foamable three-phase emulsifying composition containing an oil phase, an aqueous phase, and particles of a polycondensation polymer having a closed vesicle or a hydroxyl group formed by an amphoteric substance that spontaneously forms a closed vesicle. The foaming agent contained , wherein the closed vesicles or particles of the polycondensation polymer intervene at the interface between the oil phase and the aqueous phase and do not contain an adsorbed monomolecular film formed by the surfactant. Air is retained in the gaps of the network structure formed by the connection of the water-retaining sites of the closed vesicles or the particles of the polycondensate polymer constituting the foaming agent containing the foamable three-phase emulsifying composition, and the shape of the foam is maintained. A foaming agent containing a foamable three-phase emulsifying composition, which is possible. The foaming agent containing a foamable three-phase emulsifying composition according to claim 1, wherein the oil phase contains solid oil. The foaming agent containing a foamable three-phase emulsifying composition according to claim 1 or 2, wherein the oil phase contains a liquid oil. The foaming agent containing a foaming three-phase emulsifying composition according to any one of claims 1 to 3, which is for foods, cosmetics, pharmaceuticals, detergents or functional agents. A foaming agent containing a foaming composition, which comprises an aqueous phase and particles of a polycondensation polymer having a closed vesicle or a hydroxyl group formed by an amphoteric substance that spontaneously forms a closed vesicle. , Which does not contain an adsorbed monomolecular film formed of a surfactant, but is formed by linking the water-retaining sites of the closed vesicles or the particles of the polycondensate polymer constituting the foaming agent containing the foaming composition. A foaming agent containing a foaming composition that retains air in the gaps of the network structure and can maintain the shape of foam. A foamed product in which the composition-containing foaming agent according to any one of claims 1 to 5 is foamed. The foam according to claim 6, wherein the air content is 50% or more. By further containing the closed vesicles formed by the amphoteric substance that spontaneously forms the closed vesicles or the particles of the polycondensate polymer having a hydroxyl group in the composition containing the oil phase and the aqueous phase. A method for improving foaming property, wherein particles of the closed vesicle or the polycondensed polymer intervene in the interface between the oil phase and the aqueous phase, and contain an adsorbed monomolecular film formed by a surfactant. Instead, a method that allows the shape of a bubble to be retained by retaining air in the gaps of a network structure formed by the connection of the water-retaining sites of the closed vesicles or the particles of the polycondensate polymer. Foaming property is further contained in the composition containing an aqueous phase by containing particles of a closed vesicle formed by an amphoteric substance that spontaneously forms a closed vesicle or a polycondensation polymer having a hydroxyl group. It is a method for improving the above, and does not contain an adsorbed monomolecular film formed by a surfactant, and air is formed in the gap of the network structure formed by the connection of the water-retaining sites of the closed vesicles or the particles of the polycondensation polymer. A method that enables the shape of bubbles to be retained by retaining the shape of the particles. A foaming improver consisting of closed vesicles formed by amphipathic substances that spontaneously form closed vesicles or particles of a polycondensed polymer having a hydroxyl group, and an adsorption unit formed by a surfactant. It does not contain a molecular film and retains air in the gaps of the network structure formed by the connection of the water-retaining sites of the closed vesicles or the particles of the polycondensate polymer, so that the shape of the foam can be maintained, and the foaming property is improved. Agent. Foaming containing an oil phase containing solid oil and liquid oil, an aqueous phase, and closed vesicles formed by an amphoteric substance that spontaneously forms closed vesicles or particles of a polycondensate polymer having a hydroxyl group. In the foaming agent containing the sex three-phase emulsifying composition, the closed vesicle or the particles of the polycondensation polymer are interposed at the interface between the oil phase and the aqueous phase, and contain an adsorbed monomolecular film formed by the surfactant. By retaining air in the gaps of the network structure formed by the connection of the water-retaining sites of the closed vesicles or the particles of the polycondensate polymer constituting the foaming agent containing the foamable three-phase emulsifying composition. , A method of adjusting the hardness of foam by changing the content ratio of solid oil and liquid oil, which enables the shape of foam to be maintained.