JPH0131387B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to gel fragrance compositions.

More particularly, the present invention provides a gelled fragrance composition containing sodium behenate as a gelling agent, and more particularly, a volatile terpene hydrocarbon and/or isoparaffinic hydrocarbon in addition to the sodium behenate gelling agent. It relates to a gel fragrance composition containing as a solvent.

Traditionally, it is used as a solvent in gel fragrance compositions. Sodium stearate was used for gelation of volatile terpene hydrocarbons and/or isoparaffinic hydrocarbon solvents (e.g.
No. 57-16818, No. 57-50502 and JP-A-55-
No. 75493). However, the use of sodium stearate as a gelling agent has the disadvantage that the resulting gelled fragrance product interacts with surrounding water and dissolves. For example, when a gel fragrance containing sodium stearate is poured into water, the gel surface becomes cloudy;
If left as is for a long time, it would separate and dissolve. This is because sodium tesalate, which is a fragrance component, is water-soluble, so it gradually dissolves when water is added from the outside.

In order to overcome these drawbacks, the inventors of the present invention have conducted extensive research and have discovered that the above drawbacks can be overcome by using sodium behenate as a gelling agent.

According to the present invention, 2 to 15% by weight of sodium behenate, 40% or more by weight of volatile terpene hydrocarbons and/or isoparaffinic hydrocarbons, 1 to 30% of glycols and/or glycol monoethers and/or ethyl alcohol. wt%, water 0.3-10 wt%,
Also provided is a gel-like fragrance composition characterized by containing 0.1 to 40% by weight of Aromaceae.

In the present invention, sodium behenate is used in place of sodium stearate, which has been conventionally used as a gelling agent, in an amount of 2 to 15% based on the total weight of the fragrance component.
Use % by weight. Sodium behenate has 4 more carbon atoms than sodium stearate and has a longer carbon chain, making it highly hydrophobic. Therefore, a gel-like fragrance composition manufactured using sodium behenate as a gelling agent completely repels water even when placed in water, and does not change at all even when placed in water for a long time. do not have.
However, when the amount of behenic acid is less than 2% by weight, the strength (hardness) of the gel is insufficient, and
If the amount exceeds % by weight, it becomes difficult to form a gel and the amount remaining becomes large, which is not preferable.

The sodium behenate used in the present invention preferably has a purity of 40% or more, particularly preferably 60% or more. It may contain fatty acid sodas such as sodium palmitate, sodium stearate, sodium oleate, and sodium arachinate, and water as impurities. For example, when using sodium behenate containing sodium stearate or sodium palmitate as an impurity, depending on the composition ratio,
Gel fragrance compositions with different dissolution rates in water can be produced. However, in any case, the purity of behenic acid is preferably 40% or more. If the purity of behenic acid is less than 40%, the desired durable gel fragrance composition may not be obtained. As such sodium behenate,
Sodium behenate obtained by hydrogenating, saponifying and decomposing and refining erucic acid, etc. present in rapeseed oil, crambe oil, fish oil, etc. or natural fats and oils can be used.

In the present invention, 40% by weight or more of a volatile terpene hydrocarbon and/or isoparaffin hydrocarbon is used as a solvent in the composition, but any volatile terpene hydrocarbon can be used. Also good. Preferred volatile terpene hydrocarbons include, for example, α-pinene, β-pinene, limonene, dipentene, p-cymene, 3-carene, γ-terpinene, myrcene, ocimene, alloocimene, p-menthane, pinane, terpinolene, 1- p-menthene, limonene dimer, dipentene dimer or hydrogenated products thereof, mixtures thereof, or mixtures thereof, such as natural essential oils such as turpentine oil whose main component is α-pinene or β-pinene; d
- Orange oil and lemon oil, which have limonene as a main component, can be mentioned.

In particular, d-limonene is an important component of citrus-based fragrances because of its aroma, and is particularly excellent as a solvent for citrus-based fragrances. In particular, when these terpene hydrocarbons are used as a solvent, they are good for bringing out a natural flavor, and the aroma of the aromatic agent does not change easily until the end. These natural terpene hydrocarbons contain small amounts of oxygen-containing compounds such as alcohols, ketones, aldehydes, etc., but since they do not affect gel formation, mixing of oxygen-containing compounds is not a problem.

Isoparaffinic hydrocarbons are highly preferred as solvents because they are nontoxic, have very little odor, have appropriate volatility, and are inexpensive. Among isoparaffinic hydrocarbons, those having a characteristic formula of C ₈ H ₁₈ to C ₁₈ H ₃₈ , more preferably C ₁₀ H _22
-C16H34 are particularly suitable for _the present invention. It is also possible to use a mixture of isoparaffinic hydrocarbons and volatile terpene hydrocarbons. The use of such mixed volatile hydrocarbons is also included in the gel fragrance composition of the present invention. If it is less than 40%, sodium behenate becomes difficult to dissolve, which is not preferable.

Glycols and/or glycol monoethers and/or ethyl alcohol from 1 to 30% by weight
Contaminated with Preferred glycols include:
For example, hexylene glycol, dipropylene glycol, diethylene glycol, 1,6-hexanediol, 1,5-pentanediol, 2,
Examples include, but are not limited to, 2-dimethyl-1,3-propanediol and mixtures thereof.

Glycol monoethers include glycol monomethyl ether, monoethyl ether,
3-Methyl-3-methoxybutanol or a mixture thereof is preferred, but is not necessarily limited to such ethers. When using glycols, glycol monoethers, or a mixture thereof, if the amount is less than 1% by weight, it is not preferable because sodium behenate becomes difficult to dissolve. In addition, glycols remain as residual components after the volatile components have evaporated, so if it exceeds 30% by weight, the residual components will increase, which is not preferable. If ethyl alcohol is used alone, if it is less than 1% by weight, sodium behenate will be difficult to dissolve as described above, while if it exceeds 30% by weight, the resulting gel will volatilize too quickly, making it unsuitable as a fragrance. It is also possible to use mixtures of ethyl alcohol and glycols and/or glycol monoethers. In this case, the amount of the mixture is in the range of 1 to 30% by weight.

Water is contained in a range of 0.3 to 10% by weight. If it is less than 0.3% by weight, sodium behenate will not dissolve, and if it exceeds 10% by weight, each component will be likely to separate.
Regarding water, the amount of water contained in sodium behenate is also important, meaning that it is contained in the final gel fragrance composition in a range of 0.3 to 10% by weight.

In the gel fragrance composition of the present invention, any fragrance can be used as long as it is soluble in volatile terpene hydrocarbons and/or isoparaffinic hydrocarbons. The fragrance is used in a range of 0.1 to 40% by weight. If it is less than 0.1% by weight, it will not be possible to obtain a suitable fragrance, while if it is used in excess of 40% by weight, it will not be very effective.

In addition, in the gel-like fragrance composition of the present invention, other additives such as antioxidants (such as BHT) and fatty acid metal salts as thickening stabilizers (such as aluminum stearate, etc.) may be added as necessary. magnesium stearate, etc.) and other additives can be used as appropriate.

In producing the gel fragrance composition of the present invention, sodium behenate, volatile terpene hydrocarbons and/or isopafine hydrocarbons, glycols and/or glycol monoethers and/or ethyl alcohol, water, Further, if necessary, desired additives are heated and stirred at a temperature of 70°C to 90°C until the sodium behenate is completely dissolved. Then, after being left to cool down to a temperature of 60°C to 70°C,
When the desired fragrance is added, sufficiently stirred, and then allowed to cool, a hard and stable gel-like fragrance is obtained.

The gel-like fragrance composition according to the present invention produced in this manner does not dissolve or become cloudy at all even if it is left in a place with a lot of moisture, such as a bathroom, kitchen, washroom, etc., and persists without dissolving or becoming cloudy. While emitting a fragrance,
It evaporates for several months.

EXAMPLES Hereinafter, the present invention will be explained in more detail using Examples, but the present invention is not limited to the scope described in these Examples.

Example 1 A gel fragrance composition according to the present invention was prepared using each component in the following weight proportions.

Ingredients (g) 1 Sodium behenate (purity 80%) 6.0 2 Hexylene glycol 5.0 3 Water 1.0 4 BHT (antioxidant) 0.3 5 Limonene 82.7 6 Fragrance (lemon-based blended fragrance) 5.0 100.0 Above ingredients 1.2.3.4. Put 5 into a 200ml Erlenmeyer flask,
After heating and stirring at 70 to 80°C until the sodium behenate was completely dissolved, the mixture was cooled to 65°C, 6. After adding the fragrance, stirring well and allowing to cool, a hard and stable gel-like fragrance was obtained. When we left this air freshener in the bathroom and observed the amount and condition of the reduction, we found that when hot water, showers, etc. 90% evaporated. Also, the lemon scent persisted during that time.

Example 2 (g) 1 Sodium behenate (purity 65%) 7.0 2 Diethylene glycol monoethyl ether
6.0 3 BHT (antioxidant) 0.1 4 Water 1.5 5 Isoparaffinic hydrocarbon solvent (trade name "IP Solvent 1620" manufactured by Idemitsu Petrochemical Co., Ltd.) 78.4 6 Fragrance (diasmine-based mixed fragrance) 7 100.0 Example 1 and A gel fragrance composition of the present invention was produced in a similar manner and tested in a similar manner.
The diasmine scent lasted for about two months, and about 90% of it had evaporated after two months.

Example 3 (g) 1 Rapeseed oil hydrogenated fatty acid soda (purity 42%)
6.0 2 Hexylene glycol 5.0 3 BHT 0.3 4 Water 1.2 5 Limonene 80.5 6 Fragrance (lime-based mixed fragrance) 7.0 100.0 The gel-like fragrance composition of the present invention was produced in the same manner as in Example 1, and Tested. Approximately 90% of the liquid evaporated over a period of about two months, during which time the lime scent persisted.

Claims (1)

[Claims] 1 Sodium behenate 2-15% by weight, volatile terpene hydrocarbons and/or isoparaffinic hydrocarbons 40% by weight or more, glycols and/or glycol monoethers and/or ethyl alcohol 1-30% by weight, water 0.3 ~10% by weight, as well as 0.1% fragrance
A gel fragrance composition characterized in that it contains ~40% by weight.