JPS5945040B2 - liquid cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel liquid cleaning composition that has high cleaning performance and does not contaminate cleaning tools.

Normally, when washing used dishes, the dirty dishes are soaked in a washing liquid containing detergent and scrubbed with a hand-held sponge or scrubber to remove the dirt while applying mechanical force.

At this time, if the dirt on the tableware transfers to the sponge or scrubber, it can cause undesirable situations such as dirty hands and discomfort, or dirt on other dishes and unhygienic conditions. Therefore, there is a demand for detergents that not only completely remove dirt and grime from dishes and improve the finish, but also prevent dirt from being transferred to sponges, scrubbers, and the like. However, although some of the dishwashing detergents that have been proposed so far have shown excellent effects in terms of removing stains from dishes, foaming, and giving a nice finish, they have the potential to cause stains to transfer to sponges and scrubbers. However, in terms of preventing this, it was not yet fully satisfactory.

The present inventors conducted extensive research to develop a liquid detergent composition that not only cleans dishes but also prevents dirt from being transferred to sponges and scrubbers used when washing dishes. It was discovered that the object could be achieved by containing an acid magnesium salt and a specific polyoxyethylene alkyl magnesium sulfate in a predetermined ratio, and based on this knowledge, the present invention was accomplished.

That is, the present invention provides (N magnesium olefin sulfonate having an average carbon number of 14 to 16; polyoxyethylene alkyl (or alkenyl) magnesium sulfate,
The present invention provides a liquid detergent composition containing the present invention in a weight ratio of 4:1 to 1:4.

The magnesium olefin sulfonate used as the eight component (of the present invention) may be a single magnesium olefin sulfonate having 14 to 16 carbon atoms, but is usually a mixture of two or more magnesium olefin sulfonates having different numbers of carbon atoms. Those having an average carbon number of 14 to 16 are used.

Such magnesium olefin sulfonate is produced by, for example, forming a raw material olefin having a predetermined number of carbon atoms into a thin film, performing a sulfonation reaction with gaseous sulfuric anhydride diluted with an inert gas, neutralizing it with magnesium hydroxide, and then 200
It can be produced by hydrolysis in the temperature range of °C. Alternatively, it can also be produced by producing sodium olefin sulfonate and adding an excess amount of magnesium sulfate thereto to double decompose it.
In this case, raw materials include α-olefins, vinylidene-type olefins obtained by wax cracking method, Ziegler-catalyzed ethylene polymerization method, or modified methods thereof, dehydrogenation of n-paraffin, or dehydrochlorination of chlorinated paraffin. Among the olefins obtained by
~16 can be used. On the other hand, the present invention (
The polyoxyethylene alkyl (or alkenyl) magnesium sulfate used as component B) has the general formula R-0
It can be represented by -(CH2CH2O)NSO3.1/2Mg, which may be used alone or in a mixture of two or more.

R in this formula is an alkyl group or an alkenyl group having an average of 10 to 14 carbon atoms, which is linear or a mixture of linear and branched. In the latter case, the linear chain ratio is preferably 45 to 90%. As long as n in the formula takes an average value of 0.5 to 1.5, it may be used alone or in combination of two or more types. This polyoxyethylene alkyl (or alkenyl) magnesium sulfate is obtained by adding 0.5 to 1.5 moles of ethylene oxide per mole of alcohol to an alcohol having a predetermined number of carbon atoms, and then sulfating the polyoxyethylene alkyl (or alkenyl) magnesium sulfate in accordance with a conventional method. It can then be produced by neutralizing with magnesium hydroxide.

The raw alcohol used in this case is apricot oil, palm oil,
Saturated or unsaturated alcohols derived from natural fats and oils such as palm kernel oil, synthetic alcohols containing branched chains derived from olefins by the oxo synthesis method, and linear alcohols derived from ethylene by the Ziegler method are used. However, synthetic alcohols containing branched chains obtained by the oxo synthesis method are particularly preferred. This addition reaction between the raw alcohol and ethylene oxide is usually carried out in the presence of an alkali catalyst such as sodium hydroxide or potassium hydroxide or an acid catalyst such as tin tetrachloride.

The sulfation reaction of the polyoxyethylene alkyl ether obtained in this way can be carried out, for example, by using a thin film continuous sulfation apparatus and reacting gaseous sulfuric anhydride diluted with an inert gas, or by reacting chlorosulfonic acid. This can be done by

Moreover, the magnesium salt of polyoxyethylene alkyl sulfate can also be obtained by preparing the corresponding sodium salt, adding an excess amount of magnesium sulfate to the sodium salt, and subjecting it to double decomposition.

The weight ratio of component (4) and component (B) in the composition of the present invention must be in the range of 4:1 to 1:4. Even if the number of eight components increases or decreases, the effect of preventing dirt from adhering to sponges and scrubbing brushes decreases.
It is also advantageous for the sum of the N component and the homogeneous component to be in the range of 20 to 35%, based on the total weight of the composition.

If the amount is less than this, the cleaning effect will inevitably decrease,
If the amount is larger than this, the stability of the cleaning agent will decrease.
In addition to the components (4) and (B), the liquid detergent composition of the present invention may contain additives commonly used in liquid detergents, depending on the intended use.

Examples of such additives include anionic surfactants such as magnesium linear alkylbenzenesulfonates having 10 to 14 carbon atoms, alcohol ethoxylates having 8 to 18 carbon atoms (EOP=5 to 20), ~11 alkylphenol ethoxylates (EOP=5-20),
Corresponding oxypropylene/oxyethylene adducts, nonionic surfactants such as mono-, di- or triethanolamides of fatty acids having 10 to 14 carbon atoms, amphoteric surfactants such as betaine, sulfobetaine, xylene sulfone lower alkylbenzenesulfonates such as toluenesulfonates and benzenesulfonates, lower alcohols such as ethanol, propanol, and isopropyl alcohol, polyhydric alcohols such as ethylene glycol, glycerin, sorbitol, and carbitol, polyethylene glycol, and polypropylene. Polyalkylene glycols like glycols, potassium chloride, potassium sulfate,
Inorganic salts such as ammonium chloride and ammonium sulfate, benzoates, ethylenediaminetetraacetate, fragrances,
You can give it dye.

The liquid detergent composition of the present invention does not transfer dirt to other objects such as sponges and scrubbing brushes during cleaning, and is therefore suitable as a detergent for kitchen use, jump cleaning, and laundry detergent.

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

The adhesion of dirt in each example was determined as follows.

Test method: In a vat with a diameter of 30 CIn and a depth of 12 CTfL containing a detergent solution with a volume of 31, a concentration of 0.15%, and a liquid temperature of 25°C, the surface of a plate contaminated with butter (0.57/1 plate) was 5 times, 3 times on the back side, sponge (9cTn x 13CffL)
X4? ), and after washing 15 dishes, judge by the state of the butter that sticks to the sponge.

Evaluation A: No butterfly attached B: Very small amount of butterfly adhered C: Some butterfly adhered D: One butterfly adhered E: A large amount of butterfly adhered Example 1 Dirt sponge with various formulations When the adhesion was evaluated, the results shown in Table 1 were obtained.

Example 2 With the second composition of Example 1, A for the adhesion of dirt to sponge
When the influence of the carbon chain length and structure of OS was evaluated, the results shown in Table 2 were obtained.

Example 3 AE against the adhesion of dirt to sponge using the 3 composition of Example 1
When the influence of the carbon chain length of S and EOP was evaluated, the results shown in Table 3 were obtained.

Example 4 In the composition examples shown in Table 4, no dirt was observed to adhere to the sponge.

Claims (1)

[Scope of Claims] 1 (A) Magnesium olefin sulfonate having an average carbon number of 14 to 16, and (B) an alkyl or alkenyl group having an average carbon number of 10 to 14 and an average number of moles of ethylene oxide added of 0.5 to 1. A liquid cleaning composition characterized in that it contains polyoxyethylene alkyl (or alkenyl) magnesium sulfate of No. 5 in a weight ratio of 4:1 to 1:4. 2 The sum of component (A) and component (B) is 20% of the total composition weight.
A composition according to claim 1 in the range of -35%.