JPS6059959B2 - Setsuken composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved soap composition, particularly to a soap composition that can suppress the generation of soap scum during rinsing when washing dirty items.

Soaps, which are alkali metal salts of fatty acids, have excellent detergency, mildness to the skin layer, biodegradability, and safety, so they have long been used as detergents for baths, hand washing, and clothes washing. It's here.

However, soap has poor solubility in cold water, and also contains calcium and magnesium, which are present in water, especially hard water.
Reacts with ions such as iron to produce water-insoluble divalent metal soaps. This divalent metal soap aggregates in water and becomes so-called scum, which settles on the items being washed and causes yellowing of the items being washed, the growth of mold, and the generation of strange odors. Not only that, but it also settles in the laundry container as dirt, becoming what is called "black trash." Such a phenomenon causes complaints from soap users, and results in the product being evaluated as a poor product as a laundry detergent. Conventionally,
It is known to use metal chelating agents, metal ion sequestering agents, or scum dispersants for the purpose of preventing scum generation or dispersing scum.

Examples of metal chelating agents include tetrasodium ethylenediaminetetraacetate and trisodium nitrilotriacetate, but even if an appropriate amount of these compounds is added to the laundry during washing, the chelating agent is very low during rinsing. Methods using metal chelators have not yielded satisfactory results because they are diluted to such a concentration that they lose their effectiveness and result in the formation of scum. In addition, metal ion sequestering agents such as tripolyphosphoric acid and zeolite that trap metal ions have some effect on scum dispersion, but are still not satisfactory. As a scum dispersant,
Polyoxyethylene alkyl ether, N-[β-hydroxyalkyl]-N-polyoxyalkylene iminoalkylene carboxylate, betaine, etc. are known, but these compounds do not show any particular scum prevention effect, and especially When washing heavily soiled items, the effect of preventing scum generation is extremely small. As a result of intensive research to overcome the above problems and develop a soap-based detergent with excellent scum dispersibility, good detergency and foaming, the inventors have discovered that a specific sulfobetaine and It has been discovered that this object can be achieved by incorporating an aluminosilicate ion exchanger into soap, and based on this knowledge, the present invention has been accomplished.

That is, the present invention provides (4) an alkali metal salt, ammonium salt, or organic amine salt of a higher fatty acid having 8 to 22 carbon atoms, and (B) general formula (1) (wherein R1 is a
22 alkyl or alkenyl groups, or from 8 carbon atoms
The alkylphenyl group having 22 alkyl groups, R2 and R3, is a methyl group, a hydroxyethyl group, a hydroxyethoxyethyl group or a benzyl group, respectively.

) and sulfobetaine represented by (C) general formula (■)
(M2lnO)x-Al2O3・(SlO2)y-Z
H2O (wherein M is a calcium exchangeable cation of valence n, X is a number within the range of 0.7 to 1.5, and y is 0.8 to 6
and z is a number within the range of 2 to 24) as an essential component. (4) in the present invention
The ingredients are carbon numbers 8 to 8, which are usually used as soaps.
Alkali metal salts, ammonium salts or organic amine salts of higher fatty acids having 22 carbon atoms, especially 10 to 18 carbon atoms.
Preferred are sodium and potassium salts of higher fatty acids with . These higher fatty acid salts can be produced by directly saponifying natural animal or vegetable oils, such as tallow, palm oil, coconut oil, palm kernel oil, etc., or by neutralizing fatty acids derived from these. be done. In addition, it can also be produced by neutralizing synthetic fatty acids. Component (B) in the present invention is a sulfobetaine represented by the general formula (1), which has one long-chain alkyl or alkenyl group or an alkylphenyl group having a long-chain alkyl group, and the carbon Those having a number of 8 to 22, particularly 10 to 20 are preferred.

Even if sulfobetaine that does not meet this condition is used as component (B), the effects of the present invention cannot be achieved. (
Preferred examples of the sulfobetaine used as component B) include octyldimethyl-2-hydroxypropylsulfobetaine, dodecyldimethyl-2-hydroxypropylsulfobetaine, octadecyldimethyl-2-hydroxypropylsulfobetaine, and dodecyldihydroxyethyl-2-hydroxy. Component (C) in the present invention, which can include propylsulfobetaine, is a zeolite represented by the general formula (■), and the calcium exchangeable cation represented by M in the formula includes sodium, potassium, etc. Ions such as , lithium, and magnesium are suitable, with sodium ions being particularly preferred.

As this zeolite, type A zeolite having a particle size of 0.1 to 10 μm is particularly preferable. Zeolites can be produced, for example, by reacting water-soluble silicates with water-soluble aluminates in the presence of water.

In the soap composition of the present invention, the component (B), sulfobetaine, is present at a ratio of 2 to 5 parts by weight, preferably 4 to 5 parts by weight, per 10 parts by weight of the higher fatty acid salt of the component (4). It is blended.

If the amount is less than 2 parts by weight, it will not be possible to produce a product that can suppress the generation of scum even when used in combination with zeolite, which is component (C).

On the other hand, if the amount exceeds 50 parts by weight, the generation of scum can be prevented, but the detergency and foaming will be reduced and the object of the present invention cannot be achieved. In the present invention, the amount of zeolite as component (C) is 5 to 10 parts per 10 parts of component (4).
It is added in an amount of saliva, preferably 10 to 5 parts.

If the amount is less than 5 parts by weight, the desired effect cannot be achieved.

If it exceeds 100 parts by weight, the scum prevention effect will not be improved any further, and the proportion of component (4) will be relatively reduced, resulting in a decrease in detergency and foaming, which is undesirable. In addition to the above-mentioned components (4), (B), and (C), the soap composition of the present invention may contain, if necessary, conventional granular or solid laundry detergents and liquid detergents. The composition may also contain auxiliary additives such as fillers, builders, solubilizers, pH regulators, stabilizers, bleaching agents, fluorescent agents, fragrances, dyes, and the like.

The soap composition of the present invention can be used as a kitchen cleaner, a clothing cleaner, etc. in liquid, powder, or solid form.

The soap composition of the present invention has the effect of suppressing the generation of scum during washing, and in particular, when washing heavily soiled items, scum may be generated and the laundry container may be contaminated with scum. Not only does it not dry, but it also has excellent cold water solubility, and has good detergency and foaming even in hard water.

Next, the present invention will be explained in more detail with reference to Examples.

The performance evaluation tests for the soap compositions shown in each example are as follows.

(1) Scum dispersibility evaluation
．． A 2% tap water (DH of 5) solution was prepared.

A knitted skin shirt worn for 5 days was used as the fabric to be washed. It was washed in a bath ratio of 1:30 at 25°C in a normal manner. After dehydrating the fabric for 1 minute, it was washed with tap water for 3 minutes.
The product was rinsed for 3 minutes, then allowed to stand for 3 minutes to observe whether there was any scum on the surface of the solution or whether there was any deposits in the washing container. The evaluation of scum dispersibility was based on the following criteria. The rinsing liquid is clear and easily free of deposits.

...◎The rinsing liquid is transparent, but there are some deposits easily.

...0 The rinse liquid is a little cloudy and there is a slight amount of scum floating in it.
...Δ The rinse solution is cloudy, there is a lot of scum floating in it, and there is some sediment in the container.・
・・×(2) Evaluation of cleaning power and foaming As the cloth to be washed, 3
Using a cotton knitted skin shirt worn for a day and 20 lapel cloths with natural stains, washing was carried out under the same conditions as in the case of scum dispersion evaluation.

After washing, the reflectance difference ΔR was calculated using the following formula, and the detergency was expressed as an index with ΔR in the case of soap only (component A only) set as 100. Rvv...Reflectance of dirty cloth after washing R,...Reflectance of dirty cloth before washing Foaming is as follows: 5 minutes after adding the cloth to be washed It was evaluated based on the following criteria.

Foaming in the case of soap only (component A only) was given a score of 4, and no foaming was given a score of 0.

Therefore, the smaller the score is than 4, the worse the foaming. Example 1 50 parts by weight of beef tallow fatty acid sodium soap was added as component A to dodecyl dimethyl-2-hydroxypropyl sulfobetaine (referred to as Cl2-sulfobetaine) and octadecyldimethyl-2-hydroxypropyl sulfobetaine (referred to as Cl8-sulfobetaine) as component B. ), dodecyldimethylbetaine (Cl.

(referred to as betaine) or octadecyl dimethyl betaine (referred to as Cl8-betaine), 15 parts by weight of zeolite A (trade name: Silton, manufactured by Mizusawa Chemical) with an average particle size of 2 μ as component C, and 15 parts by weight of sodium carbonate. Department,
Soap compositions 1 and 2 consisting of 5 parts by weight of sodium silicate and 5 parts by weight of water were prepared and tested for scum dispersibility, detergency and foaming. For comparison, dodecyldimethylbetaine (referred to as Cl2-betaine) or octadecyldimethylbetaine (referred to as Cl2-betaine) was used as component B.
Soap compositions 3 and 4 having the same composition as above except for using Cl8-betaine), C as the B component.
Soap composition 5 having the same composition as above except that it contains 25 parts by weight of l2-sulfobetaine and does not contain component C, and contains 25 parts by weight of zeolite A as component C and does not contain component B. Soap composition 6 having the same composition as above except for that and Cl as the B component.

- Soap composition 7 having the same composition as above except for using 1 part by weight of sulfobetaine and 15 parts by weight of sodium tripolyphosphate as component C was prepared, and these were also tested for scum dispersibility, detergency, and foaming. . The test results are summarized in Table 1.

Example 2 In the same composition as used in Example 1, consisting of sodium tallow fatty acid soap, Cl8-sulfobetaine, zeolite A1 sodium carbonate, sodium silicate, and water, by changing the amount of Cl8-sulfobetaine. Six different soap compositions were prepared.

These soap compositions were tested for scum dispersibility, detergency and foaming.

Claims (1)

[Claims] 1 (A) Per 100 parts by weight of an alkali metal salt, ammonium salt or organic amine salt of a higher fatty acid having 8 to 22 carbon atoms (B) General formula ▲ Numerical formulas, chemical formulas, tables, etc. are available ▼ ( In the formula, R_1 is an alkyl or alkenyl group having 8 to 22 carbon atoms, or an alkylphenyl group having an alkyl group having 8 to 22 carbon atoms, and R_2 and R_3 are each a methyl group, a hydroxyethyl group, a hydroxyethoxyethyl group, or a benzyl group. 2 to 50 parts by weight of sulfobetaine represented by (C) general formula ▲ Numerical formula, chemical formula, table, etc.
is a number within the range of 0.7 to 1.5, y is a number within the range of 0.8 to 6, and z is a number within the range of 2 to 24). A soap composition containing.