JP2004154294A - Aerosol composition for frothy aroma - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a aerosol composition for a frothy aroma capable of obtaining froth well to smell and stable to a certain degree, and the residue, which is left after froth disappears or fragrance is volatilized, is little and having excellent treatment properties of residue such that the residue after used is easy to remove because solidified. <P>SOLUTION: The aerosol composition for the frothy aroma contains 0.5-5 wt.% of fatty acid soap, a higher aliphatic alcohol, a nonionic surfactant, a water soluble thickener, a highly oil-absorbable powder, a film forming resin and fragrance. <P>COPYRIGHT: (C)2004,JPO

Description

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【表２】

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【実施例】次に下記のような泡沫状芳香剤用エアゾール組成物を調整し、評価した。本実施例に用いた高吸油性粉体の吸油量はＪＩＳ Ｋ ５１０５ 顔料試験方法 吸油量の項目に準じて測定した。
【表３】

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【発明の効果】本発明は匂い立ちがよく、かつある程度安定した泡沫が得られ、かつ泡沫が消失もしくは香料が揮散した後の残物が少量および除去しやすいという残物の処理性に優れた泡沫状芳香剤用エアゾール組成物である。[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residue which has a good smell and provides a somewhat stable foam, and a small amount of the residue after the disappearance of the foam or the volatilization of the fragrance is solidified and is easily removed. This is an aerosol composition for a foamy fragrance excellent in the processability of a foam.
[0002]
2. Description of the Related Art In recent years, a wide variety of fragrances have been developed due to the boom of scents such as aromatherapy. Typical examples are a stationary gel-type fragrance and a liquid spray-type fragrance. However, the gel-type fragrance has a small surface area for emitting odor and has a poor smell. The liquid spray type fragrance is sprayed into the air and thus has a good smell, but has a high volatilization property and thus has a poor odor persistence.
For this reason, a foamy fragrance is used as a dosage form having a good odor and a certain scent persistence. By forming the foam, the surface area for emitting the odor can be increased, and the odor can be maintained until the foam disappears. For regular foaming aerosol products such as foaming hairdressing products, the use time of the product is short, so the stability of the foam is not emphasized.However, if the intended fragrance disappears, the surface area that emits odor is remarkable. Because of the decrease, it is necessary to keep the foam stable for about 1 hour to 2 days.
[0003]
For this purpose, an aerosol composition for a foamy fragrance containing a relatively large amount of a fatty acid soap, a nonionic surfactant and a higher aliphatic alcohol has been developed (see Patent Document 1). However, these are often left behind when the foam disappears or when the fragrance is volatilized, and the fragrance with low volatility remains unattractive. Such a foamy fragrance is usually spouted into a container such as glass, pottery, and porcelain, and is used by placing it at any desired place. After the disappearance of the foam or the evaporation of the fragrance, it is necessary to remove the residue from the container when using again. Therefore, it is desired that a foam which is somewhat stable is obtained, the foam disappears, or a small amount of the residue after the flavor is volatilized is easily removed.
[0004]
[Patent Document 1] JP-A-63-249568
[0005]
Means for Solving the Problems In view of the above-mentioned problems, the present inventors have made intensive studies and found that fatty acid soaps 0.5 to 5% by weight, higher aliphatic alcohols, nonionic surfactants, water-soluble We have invented an aerosol composition for a foamy fragrance, comprising a thickener, a highly oil-absorbing powder, a film-forming resin and a fragrance.
Hereinafter, the configuration of the present invention will be described in detail. The fatty acid soap of the present invention is not particularly limited, but is preferably composed of one or more fatty acids having 12 to 22 carbon atoms. Examples of the fatty acid constituting the fatty acid soap include myristic acid, palmitic acid, stearic acid, and isostearic acid. And sodium salts, potassium salts and triethanolamine salts as alkali salts of the counter ion. Then, one kind or a mixture of two or more kinds may be used. In the present invention, the amount of the fatty acid soap is 0.5 to 5% by weight, preferably 1 to 3% by weight. If the amount is less than 0.5% by weight, the stability of the foam is not sufficient, and if the amount is more than 5%, there are many residues.
The nonionic surfactant is used together with the fatty acid soap for foam formation, emulsification of a propellant, and the like. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene hydrogenated castor oil, coconut oil fatty acid diethanolamide, and glycerin monostearate. The amount is not particularly limited, but is preferably 1 to 5% by weight. If the amount is more than 5% by weight, there is much residue.
[0008] Higher aliphatic alcohols, together with fatty acid soaps, strengthen the foam interface and stabilize the foam. Preferably, those having the same or close carbon number as the fatty acid used are good. The amount is not particularly limited, but is preferably 0.2 to 5% by weight.
Aqueous thickeners include carboxyvinyl polymers, hyaluronic acid, carboxymethylcellulose and the like, which enhance foam stability. By blending these, the amount of fatty acid soap can be reduced, so that the amount of residue when the foam disappears can be reduced. Among these, a carboxyvinyl polymer which can obtain high viscosity with a small amount is not particularly limited, but the amount is preferably 0.01 to 0.5% by weight. More preferably, the content is 0.05 to 0.3% by weight. If the amount is less than 0.01% by weight, the effect of foam stabilization cannot be obtained. If the amount exceeds 0.5% by weight, the viscosity of the composition is high, and the fluidity after filling in a container together with the propellant is poor. There is.
[0010] The high oil-absorbing powder is a powder having an increased oil absorption by reducing the particle size of the powder, increasing the specific surface area by making the surface porous, or increasing the particle shape such as encapsulation. These adsorb the low-volatility fragrance remaining when the foam disappears and solidify the residue. These oil absorptions are preferably at least 40 ml / 100 g, more preferably at least 100 ml / 100 g. Examples of the highly oil-absorbing powder include porous silica, fine-particle silica, porous cellulose powder, fine-particle titanium oxide, magnesium carbonate, and fine-particle nylon powder, and are preferably porous silica and fine-particle silica. Since the highly oil-absorbing silica gels after oil absorption, it is easy to solidify the residue in a small amount. The blending amount is not particularly limited, but is adjusted according to the amount of the low volatile component of the used fragrance and the oil absorption of the used powder. Preferably it is 0.1 to 5% by weight. If the content is less than 0.1% by weight, the effect cannot be obtained. If the content is more than 5% by weight, there are many residues, and the viscosity of the composition increases and the fluidity after filling in a container together with the propellant is poor. is there.
The film-forming resin solidifies the residue when the foam disappears, and makes it easier to remove from the jetted container. The film-forming resin is preferably a water-soluble or dispersible resin in an aqueous base material, and forms a film when dried, such as polyvinyl acetate, polyvinyl pyrrolidone, polyvinyl alcohol, polyethyl acrylate, polyethyl methacrylate, and polystyrene. And copolymers thereof. The blending amount is not particularly limited, but is adjusted according to the amount of the residue when the foam disappears.
The flavor refers to a natural flavor, a synthetic flavor, or a mixture thereof. The amount is not particularly limited, but is preferably 0.5 to 20% by weight. If it is less than 0.5% by weight, it is not functionally sufficient as a fragrance, and if it exceeds 20% by weight, it is difficult to form a stable foam.
The composition for a foamy fragrance of the present invention may contain, in addition to the above essential components, various optional components such as thickeners, preservatives, pigments, dyes, powders, pH adjusters, ultraviolet absorbers and the like. Can be appropriately compounded.
As a propellant for foaming the aerosol composition for a foamy fragrance of the present invention, a liquefied gas (LPG. ), Isopentane and dimethyl ether, which can be used alone or as a mixture.
[0015]
EXPERIMENTAL EXAMPLES The following compositions for a foamy fragrance were prepared and evaluated. As an evaluation method, items of foam stability and ease of removal of the residue were evaluated as follows.
[0016]
Evaluation index Foam state: The sample was filled together with a propellant (LPG) into an aerosol container, spouted out onto a glass plate, and the state of the foam was observed. ◎: The foam was fine and elastic (bulging). ：: Foam is formed and elasticity (swelling) is present. △: Foam is formed. X: Foam is not formed. Stability of foam: A sample is filled together with a propellant (LPG) into an aerosol container, and glass is formed. The amount of foam after 8 hours and 24 hours after jetting into a measuring cylinder was determined, and the stability of the foam was evaluated according to the following criteria. A: The amount of foam was maintained at 80 to 100%. The amount of foam is maintained at 60-79%. The amount of foam is maintained at 40-59%. The amount of foam is maintained at 0-39%. Ease of removal of residue: In aerosol container. A sample is filled together with a propellant (LPG) and sprayed on a glass plate. After 72 hours (foam disappearance), when removing the residue, the shape of the residue and the degree of peeling from the glass plate were evaluated according to the following criteria. ：: The residue was solidified and the glass plate was easily removed. ○: The residue was solidified and could be easily removed from the glass plate, but a small amount of residue remained on the glass plate. Δ: The residue was solidified, but the glass plate It takes time and effort to remove x: The composition shown in Tables 1 and 2 where the residue is not solidified can be easily prepared by heating, stirring and cooling each raw material.
[0017]
[Table 1]

[0018]
[Table 2]

[0019]
EXAMPLES Next, the following aerosol compositions for a foamy fragrance were prepared and evaluated. The oil absorption of the highly oil-absorbing powder used in this example was measured according to JIS K 5105, Pigment Test Method, Oil Absorption.
[Table 3]

[0020]
Industrial Applicability The present invention has excellent smelling properties, provides a somewhat stable foam, and has a small amount of the residue after the disappearance of the foam or the volatilization of the fragrance, and is excellent in the processability of the residue, which is easy to remove. An aerosol composition for a foamy fragrance.

Claims (4)

A foamy fragrance comprising 0.5 to 5% by weight of a fatty acid soap, a higher aliphatic alcohol, a nonionic surfactant, a water-soluble thickener, a highly oil-absorbing powder, a film-forming resin and a fragrance. Aerosol composition The aerosol composition for a foamy fragrance according to claim 1, wherein the highly oil-absorbing powder has an oil absorption of 40 ml / 100 g or more. 3. The aerosol composition for a foamed fragrance according to claim 1, wherein the water-soluble thickener is a carboxyvinyl polymer and the highly oil-absorbing powder is silica. The aerosol composition for a foamed fragrance according to any one of claims 1 to 3, wherein the amount of the carboxyvinyl polymer is 0.01 to 0.5% by weight and the amount of the silica is 0.1 to 5% by weight.