JPS58131127A - Solubilizing agent good in temperature resistance and method therefor - Google Patents

Abstract

PURPOSE:To obtain a solubilizing agent good in temp. resistance and high solubilizing capacity, by preparing the solubilizing agent for a liquid detergent or a rinse from an ionic surfactant, a nonionic surfactant and an electrolyte. CONSTITUTION:A solubilizing agent substantially consists of an ionic surfactant, a nonionic surfactant and an electrolyte. This solubilizing agent is used within a range of about 0.1-15.0wt% to about 99.8-0.1wt% oil component and about 0.1-99.8wt% water and, by this method, a uniform liquid layer good in temp. resistance is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a =I solubilizer essentially consisting of three components of an ionic surfactant, a nonionic surfactant, and an electrolyte and having good temperature resistance, and a solubilizing method using the same. be.

=T solubilization methods conventionally used in liquid detergents, rinses, shampoos, lotions, etc. can be broadly classified into three methods. That is, the first method uses an ionic surfactant alone as iJ solubilization, and the second method uses
The second method uses a nonionic surfactant alone, and the sixth method uses a combination of these. 10th μ
The general feature of the solubilization method is that the ionic surfactant has a large affinity for water and the HLB balance (hydrophilic/lipophilic balance) becomes hydrophilic, so it maintains temperature resistance but has poor solubilization ability. It is extremely small and therefore requires a large amount to be used in actual use, which is industrially difficult, and when applied to the skin, skin irritation is inevitable and there is a safety problem. In the second method, a problem arising from the physical properties of the nonionic surfactant itself is that the HLB balance changes greatly depending on the temperature. For example, at high temperatures (40 to 50
℃) tends to become lipophilic, and 1) the solubilizing ability decreases markedly.

A third method is to mix both ionic and nonionic surfactants, but in reality,
When increasing the amount of solubilization, the resulting product system tends to separate water and oil at high temperatures, and the function of the solubilizer cannot be fulfilled, and a satisfactory solution has not yet been found.

In view of the current situation, the inventor of the present invention has conducted intensive research and examination of a solubilizing agent with good temperature resistance and a significantly increased solubilizing ability, and a method thereof, and has finally completed the desired present invention. That's what happened.

That is, the present invention uses a solubilizer with good temperature resistance consisting essentially of an ionic surfactant, a nonionic surfactant, and an electrolyte, and more specifically, a solubilizer with good temperature resistance consisting of an ionic surfactant, a nonionic surfactant, and an electrolyte. is 1:100-95:5, preferably 15:85-90:10, and the ratio of ionic surfactant to electrolyte is 100:1-20:80. This invention relates to an iJ solubilizer with good properties.

Furthermore, the present invention provides a solubilization method characterized by forming a uniform liquid layer of 99.8 to 01% oil and 0.1 to 99.8% water using the above i) solubilizer 0.1 to 15.0%. , particularly regarding methods for increasing solubilization capacity.

The ionic surfactant applicable to the present invention may be either anionic or cationic. However, when combined with a nonionic surfactant, the Krafft point (melting point of the ionic surfactant in the presence of water) is preferably 5°C or lower. Specific examples of anionic surfactants include soda, potassium salts of lauric acid, oleic acid, and linoleic acid;
Organic amine salts such as mono-, di-, and triethanolamine, basic amino acids; organic amine salts such as soda, potassium salts, mono-, di-, and triethanolamine; Alkyl ethoxy sulfate soda, potash salt,
These include organic amine salts such as mono-, di-, and triethanolamine, and calcium salts and magnesium salts of dialkyl ethoxy sulfates. As a cationic surfactant,
Alkylpyridinium, alkyltrimethylammonium, dialkyldimethylammonium iodine, bromine,
These are chlorine salts, etc., and these salts or two or more types thereof are used.

The nonionic surfactant is preferably a lipophilic one that is in a liquid state at room temperature;
A hydrophobic surfactant that has an HLB value of 2 to 10 according to n) and is insoluble in water is used. Further, even if it is solid at room temperature, it is acceptable as long as it is dissolved in the product system and becomes a liquid state. Specific examples include nurbitan monolaurate, sorbitan monooleate, sorbitandole oil fatty acid ester, sorbitan castor oil fatty acid ester,
polyoxyethylene oleate, polyoxyethylene
5- Among olive oil fatty acid esters, those with 5 or less ethylene oxide chains (hereinafter abbreviated as n), glyceryl monocaprylate, glyceryl monooleate, glyceryl monoisostearate, glyceryl monoalkyl ether (
Alkyl group is 8-18), diglyceryl monooleate, holoxyethylene glyceryl monooleate) (n=
1 to 6), polyoxyethylene nonylphenyl ether (n = 2 to 6), polyoxyethylene lauryl ether (n = 2 to 6), volJ oxyethylene oleyl ether (n-2 to 6), polyoxyethylene iso Examples include stearyl ether (n = 2-6), polyoxyethylene sorbitol fatty acid-f-ster (n = 2-6),
One or more of these may be used in combination.

The purpose of the present invention is to improve the above-mentioned permeability, temperature resistance, and solubilization ability, but in order to maximize the effect, in particular when selecting a nonionic surfactant, it is necessary to Activators with a narrow distribution of groups are preferably used.

6- Electrolytes used in the novel 1J solubilizer and solubilization method of the present invention include those with good heat resistance and chemical stability, such as alkali metal chlorides (NaCL,
KCl, NaBr, KBr, etc.), alkaline earth metal halides (CaCl2, etc.), oxyacid alkali gold M
FM (milk e-soda, sodium citrate, etc.), oxyacidic amino acids (lactic acid triethanolamine, citric acid monoethanolamine salt, etc.), amino acid alkali metal LM (sodium glutamate, sodium pyrrolidone carboxylate, etc.), basic amino acids of acidic amino acids (pyrrolidonecarboxylic acid arginine salt, etc.), carbonates (sodium carbonate, potassium carbonate, etc.), sulfates (sodium sulfate, potassium sulfate, etc.)
, phosphates (sodium phosphate, potassium phosphate, etc.) are used, and one or more of these can be selected and used. Furthermore, when the ionic surfactant is a substance consisting of a strong base and a weak acid, a monovalent electrolyte is advantageously used to avoid precipitation on the threads.

The solubilizing agent according to the present invention consists of three components: an ionic surfactant, a nonionic surfactant, and an electrolyte. I
lllll La Balance is coming. If it deviates from the range of the above-mentioned rule W, it will be difficult to achieve the desired purpose. For example, if there is a large amount of ionic surfactant and a small amount of nonionic surfactant and solute, the emulsion becomes a cloudy normal emulsion or exhibits a state in which oil is separated. If the ionic surfactant is small and the nonionic surfactant and electrolyte are large, a cloudy emulsion or a state in which water is separated will result. In particular, with regard to electrolytes, if the amount exceeds the specified value, it will inevitably be necessary to increase the use of ionic surfactants, which will likely cause problems with the number of skin cases and pose safety concerns. be. 'If electrolytes are low,
The object of the present invention is not achieved because the temperature resistance is reduced and the solubilization ability is also reduced.

The Fi5 solubilization method of the present invention is characterized by forming oil and water into a uniform liquid layer using a solubilizer consisting of the above-mentioned ionic surfactant, nonionic surfactant, and electrolyte. Accordingly, in the present invention, any manufacturing method may be used as long as the three components constituting the bathing agent are essentially contained in a system consisting of water and oil.

However, in order to obtain a more reliable effect, it is effective to dissolve the electrolyte in water before use.

In the solubilization method according to the present invention, the above-mentioned solubilizing agent is mixed with 0.1% to 0.1% oil and 0.1% to 998% water.
It is used in a range of 1 to 15.0%. If the content of the solubilizing agent is large, it is not practical from the viewpoint of safety and cost. When the content of solubilizer is low, the amount used is not sufficient for solubilization.

The oil applicable to the present invention may be any ordinary oil,
(e.g. pristane, squalane, liquid paraffin, petrolatum, olive oil, glycerol) IJ: y, -
2-ethylhexanoate, mink oil, isopropyl myristate, myristyl myristate, diglycerin isostearate, octyldodecanol oleate, jojoba oil, lanolin, methylpolysiloxane, methylphenylpolysiloxane, etc. One or more of these are used. (In addition to these, various additives listed as oil-based substances may be used.) In carrying out the method of the present invention, it is necessary to use various additives in addition to oil and water. applied to Among such components, those listed as water layer components include methyl alcohol, ethyl alcohol, flobyl alcohol, isopropyl alcohol, ethylene glycol, polyethylene glycol, phlopylene glycol, 1.3-
7'tanediol, glycerin, 1,4-butanediol, diglycerin, sorbitol, sorbitan, mannitol, mannitan, malpit, maltose, sodium hyaluronate, chondroitin sulfate (sodium), etc., and can be selected arbitrarily depending on the actual product system. It is used as The appropriate amount of these water layer components to be used is usually in the range of 005 to 30 per VC of water.

Father, products to which the solubilization method according to the present invention is applied may contain fragrances, VJJ preservatives, I1J plasticizers, thickeners, cutting agents, certain extraneous agents, astringents, and KIRE-1, as necessary.・Agent, 11u10
- Surfactants, active aids, etc. are added as appropriate.

What is important in the present invention is that in order to exert sufficient solubilizing power, a nonionic surfactant is added to the oil layer component as a production method, and an ionic surfactant is separately added to the f5 component (water containing electrolyte). and then both were heated from room temperature to 85℃.
A method in which the mixture is prepared by stirring and mixing under the temperature conditions of 1 and then cooled to room temperature is preferable because the solubilization time is considerably shortened. In addition, in the conventional solubilization method, each component of the product system separated immediately over time at a temperature of about 40°C, whereas in the present invention, there are no problems due to changes over time, and moreover, it can withstand considerably high temperatures. can. Furthermore, regarding the solubilization ability in temperature resistance, which is cited as an effect of the present invention,
In the conventional case, the limit is twice the total amount of ionic surfactant and nonionic surfactant, but in the case of the present invention, the ability is at least four times higher, so it is possible to reduce the amount of the actual product. The purpose is achieved by using less than half the amount of solubilizing agent than usual. Therefore, the safety problem caused by the use of a large amount of solubilizer in Example 1 can be significantly suppressed.

Next, in order to demonstrate how much better the solubilizer of the present invention is than conventional ones, the results of tests for temperature resistance and solubilization ability are shown in Table 7 below. . Trial j
In the case of the former temperature resistance test, each sample of the solubilizer (1%, 5% aqueous solution concentration) was mixed with liquid paraffin (7Q cst) at 20°C by about 70%. The solubilized sample was incubated at 5L540C for 30 days. The solubilizing ability of the latter was measured using the maximum IJT bathing M of each sample of the above-mentioned solubilizer against liquid paraffin at 20° C. as an index. The samples of the hexagonizing agent include the ionic surfactant sodium dodecyl sulfate (hereinafter referred to as BDB) alone (indicated by (A) in the table), the nonionic surfactant p, 0. Single system of L-(3) oleyl ether (hereinafter referred to as BO-3) (dekasu (B) in the table), EIDE
and BO-3 mixed system (2:98, indicated by (C) in the table),
SDS and BO-3 using sodium chloride as electrolyte
The solubilizing agent of the present invention (each component 2:2:5, in the table (f
)) were used.

Table 1 As is clear from Table 1 above, no oil separation or precipitation was observed in the temperature resistance test for samples corresponding to the present invention (DJ), both at 1% and 5% concentrations. In contrast, conventional samples (G) to (C) were heated at 5°C or 4°C.
At least a change is seen at a temperature of 0°C. In terms of solubilization ability, at a concentration of 1, the solubilizing agent of the present invention had a maximum solubilization amount of 13- or more than 5 times that of a conventional solubilizer, and at a concentration of 5≠, it was 10 times or more. This demonstrated the excellent effects of the uninvented iJ bathing agent and mouth-melting method.

As detailed above, the present invention relates to a solubilizer with good temperature resistance consisting of specific three components of an ionic surfactant, a nonionic surfactant, and an electrolyte, and a solubilization method using the same. The i'
The amount of T-solubilizing agent to be used can be minimized, safety problems are largely solved, and in the industrial field, an efficient product with great practical value is provided.6 In particular, the present invention Because of its benefits, it is widely used in water-based products such as liquid cleansers, conditioners, shampoos, hair tonics, hair lotions, cosmetic lotions, aftershave lotions, deodorizers, aerosol products, pharmaceutical liquids, body lotions, bath salts, etc. It can be used in oil-based products such as hair oils, emollient oils, cleansing oils, and polishes.

Next, examples of formulations of various products to which the solubilizer and solubilization method of the present invention are applied will be shown. The proportion of public ownership is in cents by weight.

Example 1 Cosmetic lotion [I] Alkyl phosphate sodium salt 1.
0 sorbitan monool/ate 0.5 fragrance
0.1 Liquid paraffin 1.0 Sheath water 30 [1) Glycerin 5.0 Ethanol
3.0 Electrolytic purchase (NaCt) 0.7 Purified water
85.2 [■] Ethanol 40 Preservative
Appropriate amount Pigment Appropriate amount Example 2 Emollient oil [1) Squalane 80.0 Octyldodecyl myristate 12.0 Olive oil
4.7 [11] Arginine oleate In 0.5 Sorbitan monooleate 0.5 (fll'l [Delyte (PCA
-Na) 0.3 water
2.0 actual m Example 3
Emollient lotion (II) liquid paraffin
5.02-Octyldodecanol myristate 6.02-Ethylhexyltris-glyceride 4.9P, O, (3) oleate 4.0 Zeraoxybenzoic acid butyl ester 02[11] 1
．． 3-Butanediol 3.2 Baroxybenrezoic acid methyl ester 01 Monoalkyl phosphate sodium salt 16 Electrolyte (sodium glutamate salt) 1.6 Water
73,4 Example 4 Hair lotion (1) a-motive paraffin 2.52-
Octyldodecanol myristate 6.12-ethylhexyltris-glyceride 2.4 paraoxybenzoic acid butyl ester 02(n) 1.
3-Butanediol 3.5 Paraoxybenzoic acid methyl ester 01 Magnesium salt of dialkyl ethoxy sulfate 0.9 Sodium lydone carboxylate 0.5 Water
84.71
7-

Claims (1)

[Claims] 1. A vTd agent with good temperature resistance essentially consisting of an ionic surfactant, a nonionic surfactant, and an electrolyte. 2. An oil content of 998 to 0.1% is achieved by using an af solubilizing agent of 0.1 to 15.0% (heavy electric percentage, the same applies hereinafter) consisting essentially of an ionic surfactant, a nonionic surfactant, and an electrolyte.
A 1 pJ bathing method characterized by forming a uniform liquid layer with 0.1 to 998 g of water. 3. The ratio of ionic surfactant to nonionic surfactant (IIIR ratio, same hereinafter) is 1 = 100 to 95:5
and the ratio of ionic surfactant to electrolyte is 100:1 to 20:80.The solubilizer with good temperature resistance according to claim 1 and the solubilizer according to claim 2 Method. 4. The solute is an alkali metal halide, an alkaline earth metal...halogenide, an oxyacid alkali metal salt, an oxyacid Aiso Aminawa, an amino acid alkali metal salt, a basic amino acid salt of an acidic amino acid, a carbonate, A solubilizing agent with good temperature resistance as described in item 1, characterized in that one or more sulfates, phosphates, etc. are selected from two or more types; The solubilization method according to item 2.