JPS6058888B2 - Liquid shampoo - composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in liquid shampoo compositions based on α-olefin sulfonates.

Various anionic and nonionic activators are commonly used in liquid cleaning agents for clothing, housing, tableware, and hair. Among these, J anion activators are:
Often in the form of soda or ethanolamine salts are used. Among anionic surfactants, α-olefin sulfonates (hereinafter referred to as AOS salts) have high foaming properties and high detergency, but unlike alkyl ethoxy sulfoates, etc., α-olefin sulfonates (hereinafter referred to as AOS salts) have low liquid stability at low temperatures. It has the disadvantage of becoming cloudy at low temperatures due to its inferior properties, and therefore has a soft spot in terms of commercial value. Generally, an AOS salt is a mixture containing a hydroxyalkane monosulfonate, an alkene monosulfonate, and a small amount of a disulfonate, and these components further have several types of structural isomers.

In the art, this mixture is recognized under the name AOS salt. Since each component of such a mixture exhibits a different crystallization temperature, once only the component with a high melting point precipitates as crystals, the clearing temperature is higher than this crystallization temperature, so the restorability of the liquid is poor. A
In order to improve the stability of OS salts at low temperatures, adding known hydrotropes (compounds that have the ability to increase the solubility of organic compounds) such as ethanol, propylene glycol, and glycerin has the effect of lowering the freezing point of water. However, the effect of improving the low-temperature stability of AOS salt is hardly shown; on the contrary, free water in the system decreases, and AO
Precipitation of S salt will increase.

In order to apply AOS salt to liquid cleaning agents,
No. 26845 discloses the addition of an alkyl metal salt, ammonium salt, or organic base salt of alkyl or alkenyl polyglycol ether carboxylic acid to a C8-C2O(7) AOS salt, and Japanese Patent Publication No. 1127-1989
This indicates that a substituted fatty acid amide component, a sulfonated hydrotrope component, etc. are added to the AOS salt.

However, the inventions shown in these publications are still AO
The low-temperature stability of S salts has not been sufficiently improved. In addition, liquid cleaning agents as commercial products must be stable under storage conditions ranging from low temperatures of around -5°C in winter to high temperatures of 40°C or higher in midsummer, that is, they must not become cloudy or discolored. .

A liquid detergent containing an AOS salt that exhibits excellent stability under such temperature conditions, particularly low-temperature stability, has not yet been found. The present invention was developed under these circumstances, and an object of the present invention is to provide a liquid jumper composition that has excellent low-temperature stability and conditioning properties.

As mentioned above, although AOS has excellent detergency and foaming power, it has been difficult to apply it to liquid detergents4, but the present inventors have made various efforts to stabilize AOS salts at low temperatures. As a result of the study, it was found that the low-temperature stability of liquid Jumpu containing AOS salts is improved by using a betaine-type amphoteric active agent and phosphoric acid ester in combination, and furthermore, such liquid Jumpu makes hair smooth after washing. I found out. That is, the liquid jumper composition of the present invention has (
a) General formula GM (wherein, G is an acid group of a linear olefin sulfonate having an average carbon number of 10 to 16, and M is an alkali metal or an alkaline earth metal.

) 3 to 3% saliva amount of anionic activator represented by (b)
General formula (wherein R1 is a linear or branched alkyl group having an average of 10 to 18 carbon atoms, R2 and R3 are an alkyl group having 1 to 3 carbon atoms, and R4 is an alkylene group having 1 to 3 carbon atoms.

) 1 to 15% by weight of a betaine type amphoteric active agent,
and R5 is H or methyl group, R6, R8 and RlO
is a straight or branched alkyl group having an average carbon number of 10 to 18,
R7 is a straight or branched alkyl group having an average of 6 to 15 carbon atoms, R9 is an alkylene group having 1 to 3 carbon atoms, when Y is 2,) when P=0, x is 3, n is 5 It is an integer between ~15.

) One or more of the phosphoric acid esters represented by 0
．． It is characterized by containing 3 to 7% by weight.

The anionic activator represented by the general formula 0S-M, which is the first essential component of the liquid jumper composition of the present invention, is α
- It is a substance belonging to olefin sulfonates (AOS salts).

This anionic activator is usually made from an α-olefin with an average carbon number of 10 to 16 obtained by the wax cracking method or the ethylene polymerization method using a Ziegler catalyst, and is kept in the form of a thin film to make it inactive. It is obtained by sulfonation with gaseous anhydrous sulfuric acid diluted with gas, neutralization with alkali metal hydroxide or alkaline earth metal hydroxide such as sodium hydroxide, and further hydrolysis. The obtained product contains 10 to 45% by weight of HOS (hydroxyalkanesulfonate) (however, 0.5 to 8% by weight of 2H0S).
Usually 1 to 5% by weight, 5 to 44.5% by weight of 3FI0S or higher), 55 to 8% by weight of ANS (alkenyl sulfonate), and 3 to 15% by weight of DS (disulfonate).
It is a mixture containing The blending amount of the anionic activator is 3 to 3% by weight, more preferably 7 to 2% by weight, based on the Jumpu composition.

The second essential component of the liquid jumper composition of the present invention is a betaine-type amphoteric active agent represented by the general formula below.

(In the formula, R1 is a linear or molecular chain alkyl group having an average of 10 to 18 carbon atoms, R2 and R3 are an alkyl group having 1 to 3 carbon atoms, and R4 is an alkylene group having 1 to 3 carbon atoms.) betaine-type amphoteric active agents are generally N1-
Dissolving N-dimethyl-alkylamine in ethanol,
It is produced by adding an excess molar amount of sodium monochloroacetate thereto, heating and refluxing, and filtering.

The blending amount is 1 to 15% by weight based on the Jumpu composition.
It is. If it is less than 1% by weight or more than 15% by weight, the low temperature stability of the Jumpoo composition at -5°C will be poor.

The preferred amount of betaine type amphoteric active agent is 3 to 7% by weight.
It is. The third essential component of the liquid jumper composition of the present invention is one or more phosphoric esters represented by the following general formula.

R5 is H or a methyl group, R6, R8 and RIO are straight or branched alkyl groups having an average of 10 to 18 carbon atoms, R7 is a straight or branched alkyl group having an average of 6 to 15 carbon atoms, R9
is an alkylene group having 1 to 3 carbon atoms, Y is 2, when diP=0, X is 3, and n is an integer of 5 to 15.

) The blending amount is 0.3 to 7% by weight based on the Jumpu composition, and 0.3 to 7% by weight. If the amount is less than 7% by weight, the low-temperature stabilization of the Jumpu composition will be insufficient even when used in combination with a betaine type amphoteric surfactant, and if it exceeds 7% by weight, the hair will feel slightly sticky after washing, making it unsuitable. It is. The preferred amount of phosphoric acid ester is 0.5 to 5% by weight. What is particularly important about these phosphoric acid esters is that the number n of moles added to the alkylene oxide is 5 to 15; when n is outside this range, the low temperature stability and conditioning properties of the Jumpu composition are poor. The liquid jumper composition of the present invention contains solvents such as ethanol, ethylene glycol, propylene glycol, and polyethylene glycol, hydrotropes such as sodium benzenesulfonate, sodium baratoluenesulfonate, and sodium xylene sulfonate, and urea. It has good low temperature stability without using any low temperature stabilizers.

The liquid jumper composition of the present invention is prepared by dissolving each component in water. Further, the Jumpoo composition of the present invention may contain other known liquid detergents and other components commonly used for Jumpoo, if desired. Such additive components include, for example, anionic activators such as alcohol ethoxy sulfate salts with an average added mole number of ethylene oxide of 1.0 to 5.0, alcohol sulfate salts, and lauric acid organic amine salts, coconut oil fatty acid diethanolamide, etc. and nonionic active agents such as ethylene oxide adducts of higher alcohols, nutritional ingredients such as milk casein, gelatin, protein hydrolysates, and acylated proteins. Although the reason why the effects of the present invention are obtained is not clear, it is probably due to the following reasons.

That is, AOS-Na, which is the first essential component of the liquid jumper composition of the present invention, is a combination of LES-Na (polyoxyethylene alkyl ether sulfate sodium salt) and AS-TE.
It has superior foaming power and cleaning power compared to A (alkyl sulfate triethanolamine salt), but has a high craft point.
For example, in the case of Cl4AOS-Na (Na salt of α-olefin sulfonate of Cl4), this mixture (Cl4AO
Although it varies depending on the proportion of components constituting S-Na), its Kraft point is about 8 to 15°C, and therefore its low-temperature stability is poor. However, by adding 20 to 3% of alkyl betaine (for example, lauryl dimethylamino betaine made by reacting lauryl dimethylamine with monochloroacetic acid) to Cl4AOS-Na, the Kraft point becomes 0°C or less, and the AOS becomes stable at low temperatures. sex is significantly improved. In addition to the addition of this alkyl betaine, when a phosphoric acid ester is further added, the low temperature stability is further improved, especially when the number of moles of the alkylene oxide added is in the range of 5 to 15. This is considered to be because the mixed micelles of AOS and alkyl betaine have more hydration water and are stabilized within the system. Next, the present invention will be explained in more detail with reference to the following examples. The performance evaluation method adopted in each example is as follows. The liquid Jumpoo composition with adjusted low temperature stability is stored at -5°C for one month, and in that state, the presence or absence of crystal precipitation (at -5°C) is visually determined.

If there is no cloudiness or precipitation, it is evaluated as 01 cloudiness, and if there is even a little precipitation, it is evaluated as ×. In each test example, 2% by weight of Glauber's salt was added as a freezing point depressant for the solvent. O Conditioning property O8 Determined by comprehensive evaluation of three points: coefficient of static friction, smoothness of hair, and lack of stickiness during rinsing.

(1) Static friction coefficient After massaging a hair bundle (5x120cm) using Sample Jump-1.0 da for 1 minute and rinsing,
24I Terama was left to dry in a constant temperature room at 25°C and 165% RH.

After drying, the static friction coefficient of the hair is measured using a friction coefficient meter (manufactured by Shinko Electric Co., Ltd.). In addition, the coefficient of static friction was 0.17 based on the comparison with the smoothness of hair in a sensory test.
It is known that the smoothness of the hair is excellent when: (2) Hair smoothness is evaluated by a sensory test.

That is, the hair after washing, rinsing and drying (
The smoothness of 5y120an) was evaluated by the saw pair comparison method by 20 testers using commercially available Jumpu as a control sample. (3) Absence of stickiness during rinsing evaluated by sensory test.

That is, hair is divided into left and right halves, 3.0 y of a test sample and 3.0 y of a control jump (commercially available JUMP) are placed on each of the two halves of the hair, and the stickiness of the hair after washing and rinsing is evaluated. Evaluation Criteria Experimental Example 1 Nine types of Jumpu compositions were prepared by varying the amount of betaine added, and the characteristics of each were evaluated.

The results are shown in Table 1. As is clear from Table 1, all of Comparative Examples 1 to 4, in which the amount of betaine added was outside the range of the present invention, had poor low temperature stability (-5°C). In addition, all the compounding amounts in the table are weight %. Experimental Example 2 Seven types of Jumpu compositions were prepared by varying the amount of phosphate ester added, and the characteristics of each composition were evaluated.

The results are shown in Table 2. As is clear from Table 2, Comparative Example 1, in which the amount of phosphate ester added is outside the range of the present invention;
Nos. 5 to 7 have poor low temperature stability or are sticky during rinsing. Experimental Example 3 Six types of Jumpu compositions were prepared by changing the number of moles of EO added to the phosphate ester, and the characteristics of each composition were evaluated.

The results are shown in Table 3. As is clear from Table 3, Comparative Examples 8 to 10, in which the number of moles of EO added to the phosphate ester was outside the range of the present invention, had poor low-temperature stability or had problems with the smoothness of the hair. Experimental Example 4 Two types of Jumpu compositions of the present invention were prepared by changing the type of A0S, and the characteristics of each were evaluated.

The results are shown in Table 4. As is clear from Table 4, both Examples 12 and 13 are excellent in both low-temperature stability and conditioning properties. Experimental Example 5 Three types of Jumpu compositions were prepared by changing the type of phosphate ester, and the characteristics of each composition were evaluated.

Claims (1)

[Claims] 1(a) General formula OS-M (In the formula, OS is an acid group of a linear olefin sulfonate having an average carbon number of 10 to 16, and M is an alkali metal or alkaline earth metal.) 3 to 30% by weight of an anionic activator represented by (b)
General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, R_1 is a straight or branched alkyl group with an average of 10 to 18 carbon atoms, R_2 and R_3 are alkyl groups with 1 to 3 carbon atoms, and R_4 is a carbon 1 to 15% by weight of a betaine type amphoteric surfactant represented by (1 to 3 alkylene groups);
and (c) General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (In the formula, A is ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ Numerical formulas, chemical formulas, tables, etc. There are ▼ or ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼,
R_5 is H or methyl group, R_6, R_8 and R_1
_0 is a straight or branched alkyl group with an average of 10 to 18 carbon atoms, R_7 is a straight or branched alkyl group with an average of 6 to 15 carbons, R_9 is an alkylene group with 1 to 3 carbons, and Y is ▲
There are mathematical formulas, chemical formulas, tables, etc. ▼ then x is 1; ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼ then x is 2; ▲ there are mathematical formulas, chemical formulas, tables, etc. ▼ then x is 3, n is 5 It is an integer between ~15. ) One or more of the phosphoric acid esters represented by 0
．． A liquid shampoo composition characterized in that it contains 3 to 7% by weight.