JP3694069B2 - Liquid solidification inhibitor - Google Patents

Description

【００２６】
［実施例２］
上記発明の実施の形態に記した容器充填洗浄料１〜４について、吐出させた後吐出口の液体組成物を拭き取らずキャップを外したまま、室温で２週間放置した後の吐出の具合を、＋：良い、±：普通、−：悪い、の基準で判定した。本発明の液体組成物の代わりに上記実施例１の比較用組成物１〜４を充填した比較用容器充填洗浄料についても同様の試験を行った。結果を表２に示す。これより本発明の化粧料は吐出の具合が変わらないことがわかる。
【００２７】
【表６】

【００２８】
［実施例３］
上記本発明の洗浄用の液体組成物１〜４について、各々比較用組成物１〜４との洗浄能力の比較を専門パネルによって行い、評価した。比較用組成物より洗浄能力に優れるものには＋を、同等のものには±を、劣るものには−を付した。結果を表３に示す。これより、固化抑制剤を添加したことによる洗浄力の低下は認められないことがわかった。
【００２９】
【表７】

【００３０】
【発明の効果】
本発明の固化抑制剤は固化抑制作用に優れ、これを含有する液体洗浄料等の液体組成物をポンプ容器に充填した場合は、液体組成物の固化によるノズルの詰まりがない。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid solidification inhibitor containing hydroxy fatty acid as an active ingredient, which is suitable for blending into liquid compositions such as liquid detergents and liquid cosmetics used by being filled in a container with a pump.
[0002]
[Prior art]
In recent years, with the development of containers having a pump mechanism, liquid compositions such as liquid cleaning materials and liquid cosmetics are often sold and used by filling such containers with pumps. In particular, the spread of liquid detergents is remarkable, and there is a concern about using conventional bar soap that does not know who used it in public places. It is considered that such a concern has been reduced by filling and using.
[0003]
However, when such a liquid composition such as liquid cleaning material is used by filling the pump container, the liquid composition is solidified due to volatilization of the volatile components in the liquid composition remaining at the discharge port from the pump, In many cases, the discharge port was blocked. In order to prevent such a phenomenon, studies have been made such as adopting a structure that reduces the amount of residue attached to the shape of the discharge port, but it has not been fully satisfactory. On the other hand, no attempt has been made to develop a liquid composition that is suitable for filling into such a pump container and hardly solidifies.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of such a situation, and contains a liquid solidification inhibitor having an action of suppressing solidification at a discharge port when a liquid composition is filled in a container with a pump, and the same. It is an object of the present invention to provide a liquid composition suitable for filling and using a container with a pump.
[0005]
[Means for Solving the Problems]
In view of such a situation, the present inventors pay attention to the fact that the composition that is difficult to solidify has not been studied yet when looking at the liquid composition itself to be filled in a container with a pump. As a result of repeated screening using the solidification inhibiting action of the composition as an index, it was found that hydroxy fatty acids and salts thereof have such action, and the invention was completed.
[0006]
That is, this invention solves the said subject by making hydroxy fatty acid or its salt into an active ingredient in a liquid solidification inhibitor.
Hereinafter, the present invention will be described in detail.
[0007]
(1) Solidification inhibitor of the present invention The solidification inhibitor of the present invention comprises a hydroxy fatty acid and a physiologically acceptable salt thereof. As the hydroxy fatty acid, those having 10 to 25 carbon atoms are preferable, and examples thereof include 12-hydroxypalmitic acid, 12-hydroxystearic acid, lithinoleic acid, and the like, and most preferable is 12-hydroxystearic acid. This is because 12-hydroxystearic acid is most readily available and has excellent stability. Of these, only one type may be selected and used, or two or more types may be used in combination.
[0008]
These salts of hydroxy fatty acids are not particularly limited, but are preferably physiologically acceptable in, for example, liquid detergents and liquid cosmetics, specifically, alkali metal salts such as sodium and potassium, Examples include alkaline earth metal salts such as calcium and magnesium, ammonium salts, organic amine salts such as triethylamine and triethanolamine, and basic amino acid salts such as lysine and arginine. Just one of these may be selected and used, or two or more may be used in combination.
[0009]
(2) Liquid composition of the present invention The liquid composition of the present invention is a liquid composition containing the solidification inhibitor. Here, the liquid state means a state having fluidity under a temperature condition assumed in a normal living environment, and a state having a viscosity of 15000 cs or less at 25 ° C. when the viscosity is used as a guide.
[0010]
The suitable content of the solidification inhibitor in the liquid composition of the present invention is 0.01 to 10% by weight, more preferably 0.1 to 5% by weight, based on the total amount of the liquid composition. Further, when the liquid composition of the present invention is a liquid detergent or the like and contains a fatty acid other than the solidification inhibitor, 1 to the total amount of fatty acids contained in the liquid composition It is preferably 20% by weight, more preferably 5-15% by weight. If the blending amount of the solidification inhibitor is within such a range, solidification / clogging at the pump discharge port can be sufficiently suppressed without impairing the original action of the liquid composition such as detergency.
[0011]
In addition, the liquid composition of the present invention is a composition suitable for filling a container with a pump. Here, the container with a pump means a general container having a pump function. The pump function has only to have a mechanism for discharging the liquid composition filled from the container main body by a push operation using air pressure or the like, that is, to be provided with a discharge nozzle and a backflow prevention valve. It doesn't matter. Alternatively, a structure in which a gas such as carbon dioxide gas is previously sealed at a pressure higher than atmospheric pressure, and the filled liquid composition is discharged together with the sealed gas by a push operation.
[0012]
Examples of the liquid composition of the present invention include liquid soaps such as hand soaps, shampoos, rinses, body shampoos and the like; liquid cosmetics such as lotions, emulsions and liquid foundations; liquid baths such as bath lotions; etc. Is mentioned.
[0013]
When the liquid composition of the present invention is a liquid cleaning agent, in addition to the solidification inhibitor, an optional component used in a cleaning surfactant or a normal cleaning agent can be blended. As detergents for washing, anionic surfactants such as soap and sodium lauryl sulfate; nonionic surfactants such as alkylamides; cationic surfactants such as benzalkonium chloride; alkylbetaines and the like Amphoteric surfactants; and the like. In addition, as optional ingredients, hydrocarbons such as squalane and liquid paraffin, esters such as jojoba oil and gay wax, triglycerides such as beef tallow and coconut oil, higher alcohols such as cetanol and oleyl alcohol are used as optional ingredients. Fatty acids such as stearic acid and oleic acid, polyhydric alcohols such as glycerin and 1,3-butanediol, preservatives such as parabens, UV absorbers such as benzophenone and aminobenzoic acid esters, BHT and tocopherol An antioxidant etc. can be illustrated. If these are processed by a usual formulation method, for example, heat solubilization, a composition which is difficult to solidify due to loss of volatile matter or the like can be obtained.
[0014]
When the liquid composition of the present invention is a liquid cosmetic, whitening agents such as pigments, powders, and arbutin can be blended.
In addition, the liquid composition of the present invention may contain an active ingredient such as a fragrance; vitamins such as vitamins A, B, C, E;
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to embodiments of the invention, but it goes without saying that the present invention is not limited to only these examples.
[0016]
(1) Liquid composition and container-filled cleaning material The ingredients shown in Table 1 below were weighed, dissolved by heating and stirring at 80 ° C, and cooled by stirring to obtain a cleaning composition 1. Furthermore, this was filled into a container with a pump to obtain a container-filled cleaning material 1.
[0017]
[Table 1]
<Table 1> (Numbers are% by weight)
─────────────────────────
Cetanol 0.1
Glycerin 20
Potassium hydroxide 2
Sodium hydroxide 1
Palm oil fatty acid amide 5
Lauric acid 10
12-hydroxystearic acid 1
Water 60.9
─────────────────────────
[0018]
(2) Liquid composition and container-filled cleaning material The ingredients shown in Table 2 were weighed, dissolved by heating and stirring at 80 ° C., and stirred and cooled to obtain a liquid composition 2 for cleaning. Further, this was filled in a container with a pump to obtain a container filling cleaning material 2.
[0019]
[Table 2]
<Table 2> (Numbers are% by weight)
─────────────────────────
Ethylene glycol monostearate 0.5
Glycerin 10
1,3-butanediol 10
Potassium hydroxide 1
Sodium hydroxide 0.5
Sodium lauryl sulfate 5
Lauric acid 1
Palmitic acid 4
12-hydroxystearic acid 0.1
Methylparaben 0.2
Water 67.7
─────────────────────────
[0020]
(3) Liquid composition and container-filled cleaning material The blending components shown in Table 3 below were weighed, dissolved by stirring with heating at 80 ° C, and cooled by stirring to obtain a liquid composition 3 for cleaning. Furthermore, this was filled into a container with a pump to obtain a container filling cleaning material 3.
[0021]
[Table 3]
<Table 3> (Numbers are% by weight)
─────────────────────────
Ethylene glycol monostearate 0.5
Glycerin 10
1,3-butanediol 10
Triethanolamine 7.5
Sarcosine lauryl sodium 5
Lauric acid 1
Palmitic acid 9
12-hydroxystearic acid 3
Methylparaben 0.2
Water 53.8
─────────────────────────
[0022]
(4) Liquid composition and container-filled cleaning material The components shown in Table 4 below were weighed, dissolved by heating with stirring at 80 ° C., cooled by stirring, and liquid composition 4 for cleaning was obtained. Furthermore, this was filled into a container with a pump to obtain a container filling cleaning material 4.
[0023]
[Table 4]
<Table 4> (Numbers are% by weight)
──────────────────────────────
Ethylene glycol monostearate 0.5
Glycerin 10
1,3-butanediol 10
Triethanolamine 7.5
2-Undecyl-1-hydroxyethylimidazoline betaine 5
Stearic acid 1
Palmitic acid 9
12-hydroxystearic acid triethylamine 3
Methylparaben 0.2
Water 53.8
──────────────────────────────
[0024]
【Example】
[Example 1]
A forced solidification test was performed on the liquid compositions 1 to 4 of the present invention described in the embodiment of the present invention. That is, 1 g of each of the liquid compositions was weighed in a petri dish and allowed to stand at room temperature for 1 month in an open system, and then the fluidity was determined with the naked eye. The judgment criteria were +: fluidity, ±: slightly solidified, −: solidified. Moreover, what replaced the solidification inhibitor in the liquid compositions 1-4 of this invention with water was used as the comparative compositions 1-4, respectively, and fluidity | liquidity was determined similarly. The results are shown in Table 5. This indicates that the liquid composition of the present invention is difficult to solidify. Furthermore, this shows that the solidification inhibitor of this invention is excellent in the solidification inhibitory effect.
[0025]
[Table 5]

[0026]
[Example 2]
For the container-filled cleaning materials 1 to 4 described in the embodiment of the invention, the condition of discharge after leaving for 2 weeks at room temperature without wiping off the liquid composition at the discharge port after being discharged. , +: Good, ±: normal,-: bad. A similar test was performed on a comparative container-filled cleaning material filled with the comparative compositions 1 to 4 of Example 1 instead of the liquid composition of the present invention. The results are shown in Table 2. From this, it can be seen that the cosmetic of the present invention does not change the discharge condition.
[0027]
[Table 6]

[0028]
[Example 3]
About the washing | cleaning liquid compositions 1-4 of the said invention, the comparison of the washing | cleaning capability with the compositions 1-4 for a comparison was performed, respectively, and it evaluated. Those with better cleaning ability than the comparative composition were marked with +, those with equivalent were marked with +, and those with inferior were marked with-. The results are shown in Table 3. From this, it turned out that the fall of the cleaning power by adding a solidification inhibitor is not recognized.
[0029]
[Table 7]

[0030]
【The invention's effect】
The solidification inhibitor of the present invention is excellent in solidification inhibiting action, and when a liquid composition such as a liquid cleaning material containing the solidification inhibitor is filled in a pump container, there is no clogging of the nozzle due to solidification of the liquid composition.

Claims (1)

A liquid detergent or liquid cosmetic solidification inhibitor comprising 12-hydroxystearic acid or a salt thereof as an active ingredient.