JPS6042839B2 - cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning composition containing a highly concentrated alkylbenzene sulfonate and a quaternary ammonium salt and capable of maintaining a homogeneous and transparent solution state even at low temperatures. be.

In the field of cleaning products such as laundry detergent and shampoo,
For the purpose of imparting even higher performance, many compositions have been proposed in which an anionic surfactant is the main component and a cationic surfactant is blended therein.

It is also known that surfactants having ethylene oxide units in their molecular structures exhibit compatibility even when combined with surfactants having opposite charges.

For example, JP-A-52-35203 describes a shampoo composition containing an anionic surfactant having an ethylene oxide unit and a mono-long chain alkyl type quaternary ammonium salt, and French Patent No. 209462 specifies Japanese Patent Publication No. 51-12646 describes a circular cosmetic soap containing a quaternary ammonium salt having an ethylene oxide unit, and this quaternary ammonium salt having an ethylene oxide unit is well compatible with anionic surfactants. However, it has also been shown that a 2% by weight aqueous solution containing equal amounts of both is a transparent liquid.

However, anionic surfactants having ethylene oxide units exhibit good compatibility with cationic surfactants at relatively low concentrations, but at high concentrations, the compatibility decreases, especially at low temperatures. The solution tends to become opaque.

Furthermore, among anionic surfactants, alkylbenzene sulfonates have particularly poor compatibility with cationic surfactants, making it difficult to form a stable transparent solution when combined with ordinary cationic surfactants. It was hot. The present inventors blended a quaternary ammonium salt having an ethylene oxide unit into an alkylbenzene sulfonate, which is the most commonly used anionic surfactant and has the lowest compatibility with cationic surfactants. In order to obtain a cleaning composition that can obtain a uniform and transparent aqueous solution at high concentrations and even at low temperatures, we have conducted various studies and found that the purpose was achieved by using a quaternary ammonium salt containing a certain type of alkylene oxide unit. We have discovered that the following can be achieved, and based on this knowledge, we have come to form the present invention.

That is, the present invention comprises (4) an alkylbenzenesulfonate salt of 5 to 3% by weight, and (B) a compound of the general formula (wherein R1 is an aliphatic hydrocarbon group having 8 to 24 carbon atoms, and R2 is an aliphatic hydrocarbon group having 1 to 24 carbon atoms). 3 alkyl group or hydroxyalkyl group, R3 is a hydrogen atom or a methyl group, m is an integer of 1 or 2, n is a number in the range of 3 to 30, X is a monovalent anion) Contains 0.1 to 1% quaternary ammonium salt, and (
A cleaning composition comprising an aqueous solution having a weight ratio of B)/(A) of 1 or less is provided.

The aliphatic hydrocarbon group represented by R1 in the quaternary ammonium salt represented by the general formula (1) may be linear or branched, and may be a saturated hydrocarbon group or an unsaturated hydrocarbon group. It may be a base curvature.

Examples of such aliphatic hydrocarbon groups include oc, tyl, isononyl, decyl, undecenyl, dodecyl, oleyl, palmityl, stearyl, and the like. In addition, R2 is, for example, a linear or branched ζ-chain lower alkyl group such as a methyl group, ethyl group, propyl group, isopropyl group, or a hydroxyethyl group, 2-hydroxypropyl group, or 3-hydroxypropyl group. Examples include lower hydroxypropyl groups such as. Furthermore, examples of X- in general formula (1) include halogen ions, alkyl sulfate ions, etc.
Particularly preferred are chloride ions and bromine ions.

A factor that has a large influence on the aqueous solution stability of this quaternary ammonium salt is the average number of moles of alkylene oxide added.

This n is a number in the range of 3 to 3, preferably 5.5 to 20, and if n is smaller than 3, a uniform aqueous solution will not be obtained.
Further, in the general formula (1), when the number of carbon atoms in R1 is large or when m is 2, n is preferably 5.5 or more. Further, the alkylbenzene sulfonate used in the present invention is one in which the alkyl group has 8 to 18 carbon atoms,
Particularly preferred are those having 9 to 15 carbon atoms. This alkyl group may be linear or branched. Further, the salts include alkali metal salts, triethanolamine salts, etc., and sodium salts and potassium salts are preferred. As described above, the cleaning composition of the present invention contains 5 to 3% by weight of an alkylbenzenesulfonate and 0.1 to 1% by weight of a quaternary ammonium salt having the general formula (1). do.

If the alkylbenzene sulfonate is less than 5% by weight, sufficient performance cannot be exhibited, and if it exceeds 30% by weight, it becomes slurry-like and it is difficult to maintain the fluidity of the liquid. In addition, if the quaternary ammonium salt is less than 0.1% by weight, the effect of adding the quaternary ammonium salt will not be fully exhibited, and if it exceeds 1% by weight, the composition will have good compatibility with the alkylbenzene sulfonate. is difficult to obtain. In the detergent composition of the present invention, the quaternary ammonium salt serves as a modifier or quality improver for detergents containing alkylbenzene sulfonate as a main component.

The amount used is 1 part by weight or less, preferably 0.5 part by weight or less, per 1 part by weight of the alkylbenzenesulfonate. The cleaning composition of the present invention is made by dissolving the above surfactant active ingredient in water, but other anionic surfactants, nonionic surfactants, and amphoteric surfactants may be added as desired. It may also be used.

Further, anti-restaining agents, viscosity modifiers, hydrotropes, colorants, antioxidants, fungicides, chelating agents, fragrances, etc. can also be blended. As described above, the cleaning composition of the present invention coexists in an aqueous solution with an alkylbenzene sulfonate and a quaternary ammonium salt in which an alkylene oxide and a hydroxy-substituted alkylene group are bonded between a long-chain alkyl group and a quaternary nitrogen. compared to other quaternary ammonium salt and alkylbenzene sulfonate combinations.
It has excellent stability at low temperatures such as 0°C or lower, especially at temperatures below -10°C.

Further, according to the composition of the present invention, a highly concentrated and uniformly transparent aqueous solution can be obtained compared to the combination of other quaternary ammonium salts and alkylbenzene sulfonates. Furthermore, the composition of the present invention has the effect of acting as a cationic surfactant, maintains the softness and elasticity of items to be washed, prevents static electricity, is soothing to the skin, and has a soothing effect on the skin. It has excellent effects such as reducing crispness.

Therefore, the cleaning composition of the present invention can be suitably used as various cleaning agents such as liquid laundry detergent, kitchen (vegetable and dishwashing) detergent, Jumpoo, and body shampoo.

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

Example 1 An aqueous solution of various quaternary ammonium salts and sodium linear alkylbenzenesulfonate (LAS-Na) was prepared in a weight ratio of 1:2, and the total surfactant active ingredient amount was 1% by volume. The dissolved state at room temperature was observed.

Further, the aqueous solution was stored at -10°C for one week, and its dissolved state was examined. The results are shown in Table 1. Comparing the results of experiments No. 5 and 6 (compositions of the present invention) in the same table with other results, it was found that the combination of the quaternary ammonium salt and LAS-Na of the present invention It can be seen that the combination of grade ammonium salt and LAS-Na not only has an excellent dissolved state at room temperature, but also does not freeze even after being stored at -10°C for one week, indicating excellent low-temperature stability. . Example 2 Several aqueous solutions were prepared by changing the mixing ratio of LAS-Na and quaternary ammonium salt, the dissolved state of the solutions at room temperature was observed, and the solutions were stored at -10°C for one week. The dissolved state of was investigated.

The results are shown in Table 2. The total amount of surfactant active ingredients is 1% by weight in the aqueous solution, and the mixing ratio in Table 2 shows the quaternary ammonium salt/LAS-Na in terms of weight ratio. The quaternary ammonium salt used is represented by the following formula.
Example 3 Using the quaternary ammonium salt shown in Table 3, the mixing ratio of the quaternary ammonium salt and LAS-Na was 1 by weight.
As for Example 5, aqueous solutions with different concentrations of all surfactant active ingredients were prepared, and the dissolved states of the solutions were observed.The dissolved states of the solutions were further examined when the solutions were left at -10°C for one week.

The mixing ratio of the quaternary ammonium salt of Example 4 in which the number of moles of ethylene oxide added, q, was changed and LAS-Na was 1:5 (weight ratio), and the total surfactant active ingredient concentration was 1% by weight. An aqueous solution was prepared and its dissolved state at room temperature was observed.

Further, the solution was stored at -10°C for one week, and its dissolved state was observed. The results are shown in Table 4. The mixing ratio of quaternary ammonium salts with different ethylene oxide addition moles (q) and LAS-Na is 1:5 (weight ratio), and the total surfactant active ingredient concentration is 1% by volume. An aqueous solution was prepared.

The dissolved state of this solution at room temperature was observed, and the solution was stored at -10°C for one week and its dissolved state was observed.
The results are shown in Table 5. By changing the number of moles of ethylene oxide added (q) of the quaternary ammonium salt, expressed as
The mixing ratio of this quaternary ammonium salt and LAS-Na was set to 1:5 (weight ratio), and the total surfactant active ingredient concentration was 1:5 (weight ratio).
An aqueous solution with % slag weight was prepared.

Claims (1)

[Claims] 1(A) Alkylbenzenesulfonate 5 to 30% by weight
and (B) General formula ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (R_1 in the formula is an aliphatic hydrocarbon group having 8 to 24 carbon atoms,
R_2 is an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, R_3 is a hydrogen atom or a methyl group, m is 1 or 2
quaternary ammonium salt 0.1
~W wt% and the weight ratio of (B)/(A) is 1
A cleaning composition comprising the following aqueous solution. 2. The cleaning composition according to claim 1, wherein the alkylbenzene sulfonate is an alkylbenzene sulfonate having an alkyl group having 8 to 18 carbon atoms.