JPH0686589B2 - Transparent gel composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a gel composition, and more particularly to a transparent gel composition that can be used as a fragrance or a detergent.

<Prior Art> Conventional gelling agents used for gel-like aromatics and gel-like detergents using terpene hydrocarbons as solvents include hydrogenated hydrogenated castor oil, sodium stearate, and lanolin fatty acid alkali metal salts. Was used (for example, JP-A-53
-145931, 55-75493, JP-B-57-16818, JP-A-60-182956 and 60-197797).

<Problems to be Solved by the Invention> However, when the above gelling agent is used, the produced gel-like fragrance or cleaning agent is opaque, or is transparent at room temperature but is 15 ° C or less. Then it loses its transparency and becomes cloudy,
There is a drawback that a gel with good transparency cannot be obtained. Such a drawback was the same when gelling the terpene hydrocarbon with the lanolin fatty acid alkali metal salt.

<Object of the Invention> An object of the present invention is to provide a gel composition which is transparent even at + 10 ° C or lower.

Another object of the present invention is to provide a transparent gel-like composition whose hardness can be easily adjusted from an elastic soft paste form to a hard solid form.

Still another object of the present invention is to provide a transparent gel composition having stable properties.

<Means for Solving Problems> According to the present invention, lanolin fatty acid alkali metal salt 0.5 to 2
2% by weight, ethyl hydroxyethyl cellulose and / or ethyl cellulose 0.1 to 15% by weight, nonionic surfactant 0.1 to 40% by weight, and volatile terpene hydrocarbon 40
A transparent gel-like composition is provided, which is characterized by containing at least wt%.

Hereinafter, the present invention will be described in more detail.

In the present invention, lanolin fatty acid alkali metal salt, in addition to gelling components such as volatile terpene hydrocarbons, a nonionic surfactant as a clarifying agent 0.1 to 40 wt%, preferably 0.5 to 30 wt% Added. When the amount of the nonionic surfactant is 0.1% by weight or less, the gel composition cannot be made transparent at + 10 ° C. or less, and 40% by weight or more is unnecessary.

As the nonionic surfactant that can be used in the present invention, a nonionic surfactant having a hydrophilic and lipophilic balance value (hereinafter referred to as HLB) of 7 to 20 can be preferably used.
If the HLB is less than 7 or more than 20, the desired transparency may not be obtained. Among these nonionic surfactants, polyoxyethylene compounds are particularly preferable. For example, polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl diisostearate, polyoxyethylene glyceryl triisostearate, polyoxyethylene sorbitan monostearate,
Polyoxyethylene sorbitan distearate, polyoxyethylene sorbitan tristearate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbitan diisostearate, polyoxyethylene sorbitan triisostearate, polyoxyethylene nonyl phenyl ether, Polyoxyethylene octyl phenyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene behenyl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, polyoxyethylene lauryl ether,
Polyoxyethylene oleyl ether, polyoxyethylene octyl ether, polyoxyethylene-2-hexyldecyl ether, polyoxyethylene-2-heptylundecyl ether, polyoxyethylene-2-decyltetradecyl ether, polyoxyethylene-2- Decyl pentadecyl ether, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether, polyoxyethylene glyceryl monopyroglutamate monoisostearate, polyoxyethylene hydrogenated castor oil monopyroglutamate monoisostear There are rates, etc. Among these, one or more of polyoxyethylene nonyl phenyl ether, polyoxyethylene hydrogenated castor oil, polyoxyethylene octyl phenyl ether, polyoxyethylene glyceryl triisostearate, and polyoxyethylene oleyl ether may be used. Particularly preferred.

The number of addition moles of polyoxyethylene is preferably 5 to 50 moles. Outside this range, the desired HLB may not be obtained.

In the present invention, a volatile terpene hydrocarbon is used as a carrier or a cleaning component in an amount of 40% by weight or more in the composition, but any terpene hydrocarbon may be used as long as it has volatility. When the amount of the volatile terpene hydrocarbon is less than 40% by weight, the lanolin resin acid alkali metal salt becomes difficult to dissolve, and when used as a cleaning agent, the cleaning effect also deteriorates, which is not preferable. Preferred volatile terpene hydrocarbons include, for example, α-pinene, β-pinene, limonene, dipentene, p-cymene, 3-calene, γ.
-Terpinene, myrcene, ocimene, aloocimene, p-
Menthane, pinane, terpinolene, 1-p-menthene and limonene dimer, dipentene dimer or hydrogenated product thereof, or a mixture thereof, or a mixture containing these as a main component, for example, natural essential oil such as α-pinene, β- Examples include turpentine oil containing pinene as a main component, orange oil containing d-limonene as a main component, and lemon oil.

In particular, d-limonene is an important component of a citrus-based compounded fragrance due to its aroma, and when used as an fragrance, it is particularly excellent as a solvent for the citrus-based fragrance. In particular, when these terpene-based hydrocarbons are used as a solvent, it is good for producing a natural flavor, and the odor of the fragrance does not change until the end. A small amount of oxygen-containing compounds such as alcohols, ketones, and aldehydes is contained in these natural terpene-based hydrocarbons, but it does not affect the gel formation, so that the oxygen-containing compounds may be mixed. Further, an isoparaffinic hydrocarbon or a paraffinic hydrocarbon may be mixed with the above volatile terpene hydrocarbon, but if used in a large amount, the transparency of the gel composition is impaired.
In any case, it is not preferable to mix and use 50% by weight or more of isoparaffinic or paraffinic hydrocarbon.

Further, in the present invention, a solvent such as glycols, glycol monoethers or ethyl alcohol may be mixed and used up to 30% by weight. Examples of preferable glycols include hexylene glycol, dipropylene glycol, diethylene glycol, 1,6-hexanediol, 1,5-pentanediol, 2,2-dimethyl-1,3-propanediol, or a mixture thereof. However, the present invention is not limited to these.

Glycol monoethers include monomethyl ethers of glycols, monoethyl ether, 3-methyl-3-
Methoxybutanol or mixtures thereof are preferred, but are not necessarily limited to such ethers. Since the glycols remain as a residual component after the volatile components have volatilized, if the amount exceeds 30% by weight, the residual components increase, which is not preferable. When ethyl alcohol is used alone, if it exceeds 30% by weight, the volatilization rate of the produced gel becomes too fast and it becomes unsuitable as an aromatic. It is also possible to use mixtures of ethyl alcohol with glycols and / or glycol monoethers. In this case, it is preferable to use the mixture in a range of up to 30% by weight.

The gel composition of the present invention contains a lanolin fatty acid alkali metal salt as a gelling agent. The lanolin fatty acid alkali metal salt is obtained by adding lanolin fatty acid to a volatile terpene hydrocarbon and dissolving it under heating, and then an aqueous solution of an alkali metal salt such as caustic soda or caustic potash (the amount of water in the final composition is 0.1 -10% by weight is preferred) to form in the final composition by dripping. Alternatively, an alkali metal salt of lanolin fatty acid may be prepared in advance, added to a volatile terpene hydrocarbon, and dissolved by heating. Furthermore,
The lanolin fatty acid alkali metal salt can also be obtained by heating and dissolving the lanolin fatty acid in alcohol such as ethanol, reacting it with an aqueous solution of an alkali metal salt such as caustic soda or potassium hydroxide, and then removing ethanol and water by evaporation.

The lanolin fatty acid used in the present invention contains a large amount of iso-fatty acid and hydroxy fatty acid in addition to the linear fatty acid.
The carbon number of such lanolin fatty acid is widely distributed over 9 to 34, and the linear fatty acid (C _{10 to} C ₃₂ ) has about 7 carbon atoms.
%, Iso-fatty acids (even acids) about 60%, and anteiso fatty acids (odd acids) about 30%. The preferred lanolin fatty acid is particularly preferably deodorized and purified with a fatty acid obtained by hydrolyzing lanolin, and molecularly distilled one. These fatty acids can be industrially produced, and lanolin fatty acid LIV (Yoshikawa Oil Co., Ltd.) and lanolin fatty acid SDO (Yoshikawa Oil Co., Ltd.) are commercially available.

In the transparent gel composition of the present invention, 0.5 to 22% by weight of the above lanolin fatty acid alkali metal salt is used. If the amount of lanolin fatty acid alkali metal salt is less than 0.5% by weight, the strength (hardness) of the gel is insufficient, and 22% by weight
If it is more than that, gel is less likely to be formed and the remaining amount is increased, which is not preferable.

Ethyl hydroxyethyl cellulose and / or ethyl cellulose as a thickening stabilizer of the gel composition of the present invention.
Use 1 to 15% by weight. Ethyl hydroxyethyl cellulose and / or ethyl cellulose are soluble in many kinds of organic solvents and are widely used as thickeners, stabilizers and the like. It is also soluble in terpene hydrocarbons and has a remarkable thickening effect, but it is necessary to use at least 15% in order to gel terpene hydrocarbons.

However, when used in combination with the lanolin fatty acid alkali metal salt, it has good elasticity and stability in a small amount within the above range,
A gel-like composition which does not cause syneresis can be prepared. Furthermore, since it is combined with a nonionic surfactant, it has the effect of enhancing its action. Ethyl hydroxyethyl cellulose (Hercules) has EHEC / Extra HIGH, EHEC / H
There are IGH, EHEC / LOW, EHEC / Extra LOW products, and any of them can be preferably used.

Ethyl cellulose has an ethoxyl content of 43 to 50%, which corresponds to a substitution degree of 2.2 to 2.6,
If soluble in volatile terpene hydrocarbons in this range,
Anything can be used.

In the present invention, a fragrance may be contained in the gel composition. Any fragrance can be used as long as it is soluble in a volatile terpene hydrocarbon. The amount of fragrance added is not particularly critical, but is usually 0.1-40
It is preferable to blend within the range of% by weight.

In the gel composition of the present invention, if necessary, other additives such as antioxidants (eg BHT) and fatty acid metal salts as thickening stabilizers (eg aluminum stearate, magnesium stearate, 2-Ethylhexylic acid aluminum acid, etc.) Dextrin fatty acid ester and other additives can be appropriately used.

In addition, myristic acid, palmitic acid, isopalmitic acid, stearic acid, isostearic acid, oleic acid, behenic acid, etc. can be used together in the gel composition of the present invention and reacted together. By using these acids, the hardness and appearance of the gel composition can be adjusted appropriately.

In the production of the gel composition of the present invention, the lanolin fatty acid is dissolved in a volatile terpene hydrocarbon, a nonionic surfactant, ethyl hydroxyethyl cellulose and / or ethyl cellulose at a temperature of 60 to 70 ° C., and each component is dissolved. Is stirred and mixed until it becomes uniform, and then a caustic aqueous solution is added and stirred at a temperature of 70 to 80 ° C. until the complete neutralization reaction is completed. When the reaction is complete, the solution becomes clear. Then, if necessary, a fragrance and other components are added, and the mixture is further stirred at 70 ° C. and filled in a container to obtain a solid gel composition. Also, after adding fragrance and other ingredients, while stirring
When cooled to about 30 ° C., a soft paste-like gel composition is obtained. In the production of the gel composition of the present invention, a lanolin fatty acid alkali metal salt is prepared in advance, and after stirring and mixing at 70 to 80 ° C. with a volatile terpene hydrocarbon until completely dissolved, the same as above. May be processed. Lanolin fatty acid alkali metal salt is easily obtained by dissolving lanolin fatty acid in ethanol at 60 to 70 ° C, adding caustic aqueous solution to react at 70 to 75 ° C, and then evaporating ethanol and water. be able to.

<Effects of the Invention> In the present invention, the hardness of the gel composition can be easily changed by preparing simple operations such as heating and stirring and cooling. A gel composition can be obtained. In addition, the gel composition of the present invention is very stable and does not separate or dissolve for a long period of time.

Further, the gel composition of the present invention does not lose its transparency even at a temperature of + 10 ° C. or lower, and when used as an fragrance, it can maintain a fragrance for several months.

<Examples> Hereinafter, the present invention will be described with reference to Examples.

Example-1 Fragrance component (g) 1) Lanolin fatty acid LIV 2.0 (AV127) (Yoshikawa Oil Co., Ltd.) 2) Polyoxyethylene (30) hydrogenated castor oil 4.0 3) Ethyl hydroxyethyl cellulose 3.0 (EHEC ・ HIGH Hercules Company) ) 4) d-limonene 84.32 5) BHT (antioxidant) 0.5 6) Fragrance (scent of lemon) 5.0 7) Caustic soda 0.18 8) Water 1.0 100.0 1), 2), 3), 4), 5) 200 ml Put in Erlenmeyer flask, 60
After heating to ~ 70 ℃, 1), 2), 3), 4), 5) are completely dissolved, and then 7) is dissolved in 8), and the solution is added dropwise for 5-10 minutes.
Reacted at ~ 80 ° C. After completion of the reaction, 6) was added, and the mixture was cooled and filled to obtain a transparent gel-like aromatic agent having a high elasticity. The transparent gel-like fragrance was transparent in the range of -20 ° C to + 60 ° C.

100 g of this transparent gel-like fragrance was filled in a transparent glass container and left to stand at room temperature. After about 60 days, the remaining amount decreased until it reached 10%. The transparency was not affected at all, and no turbidity occurred until the end.

Example-2 Paste-like fragrance ingredient (g) 1) Lanolin fatty acid SDO 2.5 (AV146) (Yoshikawa Oil & Oil Co., Ltd.) 2) Polyoxyethylene (40) hydrogenated castor oil 6.0 3) Ethyl cellulose (49% ethoxy) 4.0 4 ) Α-Pinene 75.34 5) BHT 0.5 6) Fragrance (herbal scent) 10.0 7) Caustic soda 0.26 8) Water 1.4 100.0 1), 2), 3), 4), 5) put in a 200 ml beaker, and Example- Preparation was carried out by the same method as in 1, and finally, 6) was added, and the mixture was cooled to 30 ° C. with stirring to obtain a viscous transparent paste-like aromatic agent. This transparent pasty fragrance was transparent even at −20 ° C. and had good gel stability.

Example-3 Detergent Component (g) 1) Lanolin fatty acid LIV 2.5 (AV127) (Yoshikawa Oil Co., Ltd.) 2) Polyoxyethylene (10) nonyl phenyl ether 15.0 3) Ethyl cellulose (49% ethoxy) 4.0 4) d -Limonene 76.98 5) BHT 0.3 6) Caustic soda 0.22 7) Water 1.0 100.0 1), 2), 3), 4), 5) in a 200 ml beaker, 60 ~ 70
After heating to ℃, completely dissolve 1), 2), 3), 4), 5), and then add the solution of 6) in 7) dropwise for 5-10 minutes 70
Reacted at ~ 80 ° C. After the reaction is complete, stir at 30 ℃
Upon cooling to a clear paste-like detergent was obtained.

The cleaning agent thus obtained was easy to apply to hands, metal surfaces, etc., and showed an excellent cleaning effect. After washing, the detergent was easily removed by flushing with water.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area C11D 1:04 9:38 1:66 9:24)

Claims (1)

[Claims] 1. Alkali metal salt of lanolin fatty acid 0.5 to 22% by weight, ethyl hydroxyethyl cellulose and / or ethyl cellulose 0.1 to 15% by weight, nonionic surfactant
A transparent gel composition comprising 0.1 to 40% by weight and 40% by weight or more of a volatile terpene hydrocarbon.