JPS5849597B2 - detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition that has an extremely mild effect on the skin and has excellent detergency and foaming power.

Hand washing is commonly used to clean tableware, vegetables, hair, skin, or delicate clothing such as silk, wool, and acetate fibers.

Therefore, there has been a demand for detergents for cleaning objects of this type that have not only detergency and foaming power but also mild effects on the skin and less roughness.

Conventionally, surfactants that are relatively gentle on hands, such as polyoxyethylene alkyl ether monosulfate salt and polyoxyethylene alkyl ether, have been used for this purpose, but the former is not satisfactory in terms of skin irritation and roughness. In particular, those with a small number of added moles of ethylene oxide have good detergency and foaming power, but are more irritating to the skin and cause rough hands.

On the other hand, although the latter has a mild effect on the skin, it has poor detergency and foaming power and is not satisfactory as a raw material for commercial products.

Furthermore, attempts have been made to use alkyl ether fatty acid salts, which are fatty acid derivatives that are still water-soluble even in hard water and have high surface activity, but they have been found to have poor cleaning power, foaming power, and foaming power, especially in cases of heavy oil stains. The drawback was that it was not sufficient.

As a result of intensive research aimed at improving these shortcomings, the present inventors surprisingly found that among the combinations of anionic surfactants and cationic surfactants, which were generally considered to be unsuitable for detergent formulations, This book discovered the fact that a combination of a specific anionic surfactant and a specific cationic surfactant has an extremely mild effect on the skin, and that this combination provides even better cleaning and foaming power. Completed the invention.

That is, the present invention provides general formula (1) [wherein R1 is an alkyl group or alkenyl group having an average carbon number of 6 to 22, preferably 8 to 18 carbon atoms, or an alkylphenyl group having an alkyl group of 6 to 17 carbon atoms, R', R "respectively H, CH3 or C2H5 (at least one of them is H), A is an oxygen atom or a sulfur atom, preferably an oxygen atom, B is an alkylene group having 1 to 3 carbon atoms, preferably a methylene group, M is an alkali metal , an alkaline earth metal, ammonium, or an alkanolamine having 2 to 4 carbon atoms, and n is a number of 0 to 20, preferably 0 to 10]; and an alkyl ether fatty acid salt represented by the general formula (n
) [In the formula, R3 is an alkyl group having an average carbon number of 6 to 15, R4
t R5 t R6 is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, or -(C2H40)mH(
(where m is a number from 1 to 10), and X is a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms. The proportion is higher than the alkylammonium salt, preferably the equivalent ratio is 20/1 to 1/
The present invention provides a detergent composition characterized in that the detergent composition contains the following:

By the way, examples of using an anionic surfactant and a cationic surfactant in combination can be seen in shampoo formulations [U.S. Pat. Nos. 3,313,743, 3,65
No. 8, 7 1 7, No. 3, 8 1 6, 6 1 6,
No. 3,9 6 2,4 1 8, No. 4,0 6 1,
60 No. 2], the anionic surfactant is a sulfonate, sulfate ester salt, or alkyl fatty acid salt, and the cationic surfactant is a polymer compound or a specific compound, and the purpose is However, it is expected to have a hair softening effect, and is not intended to have cleaning power or foaming power as in the present invention.
The present invention provides, for the first time, a detergent composition that exhibits skin gentleness and excellent detergency and foaming power, which is achieved through the combination of an alkyl ether fatty acid salt and an alkylammonium salt.

The relationship between the blending ratio of the alkyl ammonium salt to the alkyl ether fatty acid salt, detergency, and foaming power becomes better as the ratio of the alkyl ammonium salt increases.

However, if the amount of the alkyl ammonium salt is too large, the alkyl ammonium salt itself will cause skin irritation, which is undesirable, and the detergency and foaming power will also decrease, so the equivalent ratio of the alkyl ammonium salt and the alkyl ether fatty acid salt It is desirable to suppress it to 1 or less, preferably 1 to 1/20.

Further, the content of the alkyl ether fatty acid salt and the alkyl ammonium salt in the detergent composition of the present invention is preferably 5 to 30% by weight for the former and 1 to 10% by weight for the latter.

The alkyl ether fatty acid salt used in the present invention is a compound having a structural formula represented by general formula (I), and these are obtained by adding ethylene oxide, propylene oxide, and butylene oxide to the starting alcohol by a conventional method. It can also be obtained by reacting the polyoxyalkylene alcohol obtained by this method with a salt of monochloroacetic acid or monobromoacetic acid, a salt of chloropropionic acid, chloro-n-monobutyric acid, etc., or by oxidizing the polyoxyalkylene alkyl ether. This can be obtained by

Representative compounds include polyoxyethylene lauryl ether sodium acetate (average number of added moles of alkylene oxide W-5), polyoxyethylene myristyl ether ammonium acetate (n-3), polyoxyethylene cetyl ether magnesium acetate (π- 7), polyoxypropylene lauryl ether potassium acetate (π4), polyoxybutylene lauryl ether acetic acid triethanolamine (n=1), polyoxyethylene myristyl ether sodium propionate (n-3), polyoxyethylene cetyl ether butyric acid diethanolamine (π
-5), polyoxyethylene lauryl thioether potassium acetate (π=7), and the like.

The alkylammonium salt used in the present invention has the general formula (
II), in particular, compounds in which R4, R5, and Ra are each an alkyl group having 1 to 3 carbon atoms, the following general formula (I) or (IV)
Compounds represented by are preferred.

[In the formula, R'3 is an alkyl group having an average carbon number of 6 to 15, R'
4 and R' are each an alkyl group having 1 to 3 carbon atoms,
X is a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms, p is 1 to 10] [In the formula, R'3
is an alkyl group having an average carbon number of 6 to 15, R'4 is an alkyl group having an average carbon number of 1
-3 alkyl group, X represents a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms, p and q
are each from 1 to 10 and the sum is from 2 to 11] Specific examples of these compounds include decyltrimethylammonium chloride, myristyltrimethylammonium bromide, lauryltrimethylammonium methylsulfate, lauryltriethylammonium chloride, and dipolyoxyethylene chloride. Examples include octylmethylammonium (average number of added moles of alkylene oxide p+q=2), dipolyoxyethylenedecylmethylammonium chloride (Yi-4), and the like.

Since the present invention can only be achieved by a combination of the anionic surfactant and cationic surfactant shown above, in carrying out the present invention, use of anionic surfactants other than those described above should be avoided as much as possible. The use limit is up to 1/5 equivalent of the cationic activator.

In carrying out the present invention, detergent raw materials other than conventionally known anionic activators can also be used as optional ingredients.

These include nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, fatty acid alkanolamides, and the like.

Furthermore, amphoteric surfactants such as alkyl betaines and alkyl amine oxides can also be used.

In addition, when preparing a liquid detergent, a conventionally known low-temperature stabilizer can be used in combination.

For example, lower alcohols such as ethanol and isopropanol, glycols such as ethylene glycol, polyethylene glycol, propylene glycol, and polypropylene glycol, lower alcohols such as benzene sulfonate, p-toluene sulfonate, and xylene sulfonate. Examples include alkylbenzenesulfonic acids, aromatic carboxylates such as benzoates and salicylates, and urea.

Furthermore, various substances known to be compoundable in detergents can be used in combination depending on the purpose.

These include organic builders and inorganic builders for improving cleaning power such as citric acid, malic acid, gluconic acid, or their salts, as well as anti-aging agents, enzymes, protein derivatives, opacifying agents, coloring agents, Examples include additives such as preservatives and fragrances.

Furthermore, in practice, the pH of the cleaning agent composition should be 5 to 9.
It is desirable that the pH is 6 to 8, and more preferably the pH is 6 to 8.

The present invention will be explained below with reference to Examples, but the present invention is not limited by these Examples.

In addition, hereinafter, % represents weight %, alkyl ether fatty acid salt is ABC-M (M is a counter ion), linear alkylbenzene sulfonate is LAS-M, alkyl sulfate ester salt is AS-M, polyoxyethylene alkyl sulfate. Ester salt is AES-M, alkyl sulfonate is SAS-M
, α-olefin sulfonate is abbreviated as AOS-M.

In addition, the detergency test and the foaming power test in the following examples were conducted by the following method.

Test method> a) Detergent power 0.1% Sudan (red pigment) was added as an indicator to beef tallow, and 5g of this was applied to a magnetic dish (diameter 25 crrL). It is indicated by the number of dishes that have been cleaned until the tallow can no longer be removed by scrubbing them with a sponge soaked in the dish.

Mouth) Foaming power: Measure the foaming power when 0.1% of commercially available Baku is added to a detergent solution with a detergent concentration of 0.5%.

The measurement method is to place 4 Qcc of the above detergent solution to which butter has been added into a glass cylinder with a diameter of 5 cfrL, rotate and stir for 10 minutes, and measure the foam height immediately after stopping.

Example 1 According to the above test method, various detergent compositions were tested for detergency and foaming power.

The results are shown in Table-1 and Table-2.

The results in Tables 1 and 2 show that ABC-Na alone (composition 2) has poor detergency and foaming power, but the detergent of the present invention consisting of a combination of quaternary ammonium salt and ABC-M (composition 2)
In compositions 1, 8 to 12), the detergency and foaming power are enhanced.

On the other hand, when other anionic surfactants are combined with quaternary ammonium salts (Kumikaimono 3 to 7), it becomes a combination of a normal anionic surfactant G3 and a cationic surfactant, resulting in cleaning power,
Almost no foaming power is observed.

Example 2 For performance comparison with various foaming agents, a foaming power test was conducted on the compositions shown in Table 3.

The results are shown in Table-3.

The results in Table 3 show that compared to conventionally used foaming agents such as Vequin and amine oxide, the foaming agent provided by the present invention
It is clear that the grade ammonium salt exhibits a significantly superior auxiliary effect in terms of foaming power when dirt is present.

Example 3 A detergency and foaming power test was conducted using different types of alkyl ether fatty acid salts in the following formulations.

The results are shown in Table 4.

Example 4 A detergency and foaming power test was conducted using the following formulations with different types of alkyl ammonium salts.

The results are shown in Table 5.

Example 5 A hand roughness test was conducted using the detergent of the present invention (Kumikaimono/161) used in Example 1 and the comparative detergent composition (439) below using the method described below.

The results are shown in Table-6.

<Rough hands test method> The left and right palms are immersed in a detergent solution and a pairwise comparison is made. Test personnel: 10 people for the detergent to be compared Immersion period: 1
Tako is carried out for 30 minutes for 2 consecutive days and judged the next morning. Immersion concentration: Detergent 1.2% solution Immersion temperature: 40°C Evaluation method: The right hand is used as the standard, and changes in the left hand are scored. Judgments are made by summing the evaluated scores. From the results in Table 6, it can be seen that the detergent composition of the present invention (/i61) has superior skin mildness compared to the comparative detergent composition (439).

Example 6 A rough hand test was conducted in the same manner as in Example 5 for the detergent composition of the present invention (440) and a comparative detergent composition containing an alkyl ammonium salt alone (/f641) as shown below.

The results are shown in Table-7. *From the results in Table 7, it was found that when an alkyl ammonium salt is combined with an alkyl ether fatty acid salt, the skin mildness is greatly improved compared to when the alkyl ammonium salt is used alone.

Claims (1)

[Scope of Claims] 1 General formula (I) [wherein R1 is an alkyl group or alkenyl group having an average of 6 to 22 carbon atoms, or an alkylphenyl group having an alkyl group having 6 to 17 carbon atoms, Rl, R // is H, respectively
CH3 or C2H5 (at least one of them is H)
, A is an oxygen atom or a sulfur atom, B is an alkylene group having 1 to 3 carbon atoms, M is an alkali metal, an alkaline earth metal, ammonium, or an alkanolamine having 2 to 4 carbon atoms, n
is a number from 0 to 20] and an alkyl ether fatty acid salt represented by the general formula (I
I) [In the formula, R3 is an alkyl group having an average carbon number of 6 to 15, R4,
R5 and R6 are each an alkyl group having 1 to 3 carbon atoms,
a hydroxyalkyl group or -(C2H40)rnH (where m is a number from 1 to 10), X is a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms. , the equivalent ratio of alkyl ether fatty acid salt and alkyl ammonium salt is 2
A detergent composition characterized in that the detergent composition is contained in a ratio of 0/1 to 1/1. 2. The detergent composition according to claim 1, wherein in general formula (1), A is an oxygen atom and B is a methylene group. 3 In general formula (II), R4? R5 t R
3. The detergent composition according to claim 2, wherein each of 6 is an alkyl group having 1 to 3 carbon atoms. 4 The alkylammonium salt has the general formula (I) [in the formula R'
3, an alkyl group having an average carbon number of 6 to 15, R'4, R
5 is an alkyl group having 1 to 3 carbon atoms, X is a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms, and p is 1 to 10. 2. Detergent composition according to item 2. [In the formula, R'3 is an alkyl group having an average carbon number of 6 to 15, R'
4 represents an alkyl group having 1 to 3 carbon atoms, X represents a halogen or a monoalkyl sulfate group having an alkyl group having 1 to 3 carbon atoms, p and q each represent 1 to 10, and the sum thereof is 2 to 11.] The detergent composition according to claim 2, which is a compound represented by: 6 In general formula (I), A is an oxygen atom, B is a methylene group, R1 is an alkyl group having an average carbon number of 8 to 18, R' is H, R// is H or CH3, and n is a number of 0 to 10. A detergent composition according to claim 3, 4 or 5. 7 The content of alkyl ether fatty acid salt is 5 to 30 F
%, the content of alkylammonium salt is 1-10% by weight
A detergent composition according to claim 1, 3, 4, 5, or 6.