JPH0613698B2 - Azole composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an aerosol composition. More specifically, it relates to a water-based aerosol composition having excellent emulsification and solubilization stability.

[Prior Art] Conventionally, a fatty acid soap has been mainly used as a foaming detergent for an aerosol composition for face washing and beard shaving. However, recently, a weakly acidic foam cleaning agent adapted to the pH of the skin has been more favored than a fatty acid soap having an alkaline pH from the viewpoint of stability such as skin irritation and its usability. Among them, N-acyl glutamic acid (salt) is widely used as a foaming detergent for shampoos, cleansing foams, solid soaps, kitchen detergents, etc., and is particularly promising.

However, since N-acyl glutamic acid (salt) has poor compatibility with a propellant, when used as a foaming detergent for an aerosol composition, there is a drawback that the propellant separates to the upper part.

[Problems to be Solved by the Invention] A large amount of fatty acid soap may be added as a method of eliminating propellant separation, but in this case, the pH will rise and crystals will precipitate at low temperatures over time and However, there is a drawback that the nozzles are clogged. In addition, it is not preferred because the foam quality becomes hard in terms of usability.

[Means for Solving Problems] As a result of earnest research to solve the above-mentioned drawbacks, the present inventors found that N
It was found that the propellant can be uniformly emulsified or solubilized by the combined use of an acylglutamic acid or its salt, a basic substance, a higher fatty acid, a fatty acid alkanolamide, water and a propellant, and this aerosol composition has a low temperature. It was found that the stability and the like are extremely good and the feeling of use is excellent, and the present invention was completed here.

That is, the present invention is characterized in that N-acyl glutamic acid and / or a salt thereof, a higher fatty acid, a basic substance, a fatty acid alkanolamide, water, and a propellant are blended, and the propellant is uniform. The present invention provides an aerosol composition which is emulsified or solubilized and has excellent temperature stability.

Hereinafter, the present invention will be described in detail.

N-acyl glutamine and / or used in the present invention
Alternatively, the acyl group of the salt thereof is preferably an alkyl group having 7 to 13 carbon atoms, an alkenyl group or a mixture thereof, and in particular, N-acyl glutamic acid is contained in an amount of 0.6 mol to 1.4 mol per 1 mol of N-acyl glutamic acid. More preferably, the salt is neutralized with a molar amount of alkali metal and / or triethanolamine.

In the present invention, one or more of these are used, and the blending amount varies depending on the purpose of the product, the type of acyl group, the degree of neutralization, etc., but is preferably 5 to 30% in the composition, and more preferably Is 5 to 20%. If it is less than 5%, the foaming power and detergency tend to be poor, and if it exceeds 30% significantly, it becomes difficult to liquefy and it is not preferable as an undiluted aerosol solution.

The higher fatty acid used in the present invention has 8 to 14 carbon atoms.
Is a straight chain saturated higher fatty acid, and can be used alone or in combination of two or more kinds.

The compounding amount is 2 to 15% by weight. When blending more than 15%,
Stability such as precipitation at low temperature is not preferable.

Examples of the basic substance used in the present invention include metal hydroxides such as potassium hydroxide and sodium hydroxide, triethanolamine, isopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2. At least one of organic amines such as -methyl-1-propanol and basic amino acids such as arginine and lysine is selected and used.

The blending amount varies depending on the type and content of N-acylglutamic acid (salt) and the type of basic substance used, but it is preferably in the range of 0.05 to 0.6 weight per 1 weight of higher fatty acid.

The fatty acid alkanolamide used in the present invention has the general formula In the formula, R is an alkyl group or alkenyl group having 8 to 14 carbon atoms, X is hydrogen or -CH ₂ CH ₂ OH group, -CH ₂ CH (OH) CH ₃ group, and X'is -CH ₂ CH ₂ OH group. Or-CH ₂ C
H (OH) CH ₃ group, and specific examples include lauric acid diethanolamide, lauric acid monoethanolamide,
Examples include coconut oil fatty acid diethanolamide. These may be used alone or in combination of two or more.

The compounding amount is 1 to 20% by weight in the aerosol composition, and 1
%, The effect of improving low temperature stability cannot be expected.

Examples of the propellant used in the present invention include chlorofluorocarbons such as dichlorodifluoromethane, trichloromonofluoromethane, and dichlorotetrafluoroethane, and propane,
One or more lower hydrocarbon gases such as butane, liquefied petroleum gas (hereinafter abbreviated as LPG), and dimethyl ether can be used.

The blending amount is 2 to 20% by weight in the composition, and if it is less than this amount, it is difficult to function as an aerosol, and if it exceeds this amount, stable formulation is difficult. These propellants may be used alone or in combination of two or more.

The blending amount of water in the present invention is 40 to 90% by weight in the composition.

Conventionally, it has been difficult to satisfactorily emulsify or solubilize a propellant in an aerosol composition in a water space, but the aerosol composition of the present invention provides a good and stable emulsified or solubilized state. In the composition of the present invention, in addition to the above essential components, a moisturizer, a lower alcohol, a detergent, a nonionic surfactant, an oil component, an ultraviolet absorber, an antiseptic agent, an antioxidant, a drug, a thickener, if necessary. Ingredients commonly used in aerosol compositions such as pigments and fragrances can also be added.

[Effect of the Invention] Next, the effect of the present invention will be described in more detail with reference to test examples.

Test Example-1 (1) An aerosol composition was prepared by filling a transparent container with a stock solution and a propellant, and allowed to stand at 0 ° C. for 1 week to observe the presence or absence of precipitation.

No precipitation observed ○ Precipitation observed × (2) After shaking well, the sample was left for 1 day for observation.

Separation of propellant ○ Separation of propellant × As shown in Table-1, separation of propellant is observed when sodium N-acylglutamate alone is used (No.
1). When myristic acid is added to this system, the separation of the propellant is eliminated, but precipitation tends to occur at low temperatures, which is not preferable as an aerosol (No. 2). On the other hand, when coconut oil diethanolamide was further added, there was no separation of the filler, no precipitation at low temperature, and a smooth and good aerosol composition in terms of feel to use.

[Examples] Example-1 The following facial cleansing aerosol compositions were prepared.

N-Cocoyl glutamic acid weight% sodium (1.1 mol) 15 2-amino-2-methyl-1,3-propanediol 4 dipropylene glycol 10 myristic acid 7 lauric acid diethanolamide 2 perfume 0.3 purified water 56.7 LPG 5 The above composition had good foaming properties, excellent detergency, no precipitation at low temperature, and uniform solubilization of the filler, resulting in good stability.

Example-2 The shaving aerosol composition shown below was prepared.

N-lauroyl glutamic acid weight% sodium (1.2 mol) 10 N-myristoyl glutamate sodium (1.3 mol) 1 triethanolamine 3.2 lauric acid 6 myristic acid 2 coconut oil diethanolamide 5 glycerin 51,3-butylene Glycol 2 Perfume 0.2 POE Hydrogenated castor oil derivative (E060 mol) 1 Purified water 58.6 Dichlorotetrafluoroethane 4 Dichlorotetrafluoromethane 3 The above composition has good foaming and easy rinsing,
Moreover, the aerosol composition had good usability with no clogging on a razor blade, no precipitation was observed at low temperatures, and was an emulsion composition in which the filler was uniformly emulsified and had good stability.

Example 3 The following body cleaning aerosol composition was prepared and tested.

N-cocoyl glutamic acid weight% sodium (1.2 mol) 9 2-amino-2-methyl-1-propanol 4.6 dipropylene glycol 1 1,3 butylene glycol 3 lauric acid 15 stearic acid 2 fragrance 0.4 coconut oil Diethanolamide 15 Purified water 40 LPG 5 Dimethyl ether 5 The above composition had good foaming properties, excellent detergency, no precipitation at low temperature, and a stable solubilization of the filler.

Example-4 The following shaving aerosol composition was prepared and tested.

N-cocoyl glutamic acid wt% triethanolamine (1.2 mol) 5 KOH 2 lauric acid 8 myristic acid 2 lauric acid diethanolamide 20 fragrance 0.2 purified water 47.8 dichlorotetrafluoroethane 5 dichlorodifluoromethane 5 LPG 5 The above composition Had good foamability, was easy to rinse, had good usability without clogging of the razor blade, and had good stability.

Example-5 The following cleaning aerosol compositions were prepared and tested.

N-lauroyl glutamic acid wt% sodium (1.2 mol) 18 L-arginine 4 stearic acid monoglyceride 0.5 lauric acid 2 stearic acid 2 lauric acid monoethanolamide 10 fragrance 0.2 quinoline yellow 0.02 propylene glycol 2 purified water 43.298 LPG 8 Dimethyl ether 10 The above composition foamed, had excellent detergency, and had good stability.

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Claims (1)

[Claims] 1. N-acyl glutamic acid and / or its salt, and potassium hydroxide, sodium hydroxide, triethanolamine, isopropanolamine, 2-amino-2-.
Methyl-1,3-propanediol, 2-amino-2-
One or more selected from the group consisting of methyl-1-propanol, arginine and lysine, a higher fatty acid, a fatty acid alkanolamide represented by the following general formula A, water, and a propellant. Aerosol composition. (In the formula, R is an alkyl group or alkenyl group having 8 to 14 carbon atoms, X is hydrogen or -CH ₂ CH ₂ OH group, -CH ₂ CH (OH) CH ₃ group, and X'is -CH ₂ CH ₂ OH. Group or -CH ₂ CH (OH) CH ₃ group)