KR20050001541A - A detergent composition for washing-machine - Google Patents

Abstract

PURPOSE: Provided is a detergent composition for washing the tub of a washing machine which is improved in washing power and antibacterial property and removes the pollutant adhered on the surface of the tub for a long time. CONSTITUTION: The detergent composition comprises 60-90 wt% of sodium percarbonate; 5-20 wt% of tetraacetyl ethylene diamine; and 5-30 wt% of a mixture of at least one kind of a nonionic surfactant selected from polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyethylene alkyl ether, amine oxide and polyoxyethylene lauryl amine, and at least one kind of anionic surfactant selected from sodium lauryl sulfate, sodium α-olefin sulfonate, sodium xylene sulfonate and α-olefin sulfonate. Preferably the ratio of the nonionic surfactant and the anionic surfactant is 1:5 to 5:1.

Description

A detergent composition for washing-machine

The present invention relates to a cleaning composition for washing a washing tank, more specifically sodium percarbonate; Tetraacetyl ethylenediamine; At least one selected from polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, amine oxide, and polyoxyethylene lauryl amine as a nonionic surfactant, sodium lauryl sulfate as an anionic surfactant, The present invention relates to a laundry detergent composition prepared by mixing at least one selected from sodium alpha olefin sulfonate, sodium xylene sulfonate, sodium lauroyl salcosinate, and alpha olefin sulfonate.

In general, the washing tank in the washing machine is thought to be naturally washed with the washing of the laundry because the laundry detergent is put together with the laundry to perform the washing process with the rotation, so little research has been conducted on the cleaning composition of the washing tank.

However, the laundry detergent alone does not wash the washing tank, but even after washing, the washing machine residues, as well as various proteins and oil-soluble contaminants, and deposits of metal ions salts and various fiber softener soluble components in tap water flowing into the washing tank are adsorbed. In addition, they form contaminants or scales in a compressed form that are not naturally discharged to form hotbeds of various molds. The laundry and laundry detergent are repeatedly put into the contaminated washing tank, and the contaminants of the washing tank are contaminated with the laundry, causing various skin diseases such as atopy to people with sensitive skin. Therefore, a separate washing of the washing tank is required in addition to washing the laundry, and for this purpose, the development of the washing tank cleaner has been attempted.

Although chlorine-based cleaners and organic acid-based cleaners have been used as conventional washing tank cleaners, chlorine-based cleaners have excellent bactericidal effects against bacteria, but the cleaning performance is remarkably deteriorated for the contaminants deposited inside the washing tank. Depending on the type and amount of acid constituting a lot of immersion reaction time for cleaning, there is a problem that has a specific limitation only in the removal of metal ion salt deposits contained in the tap water introduced during washing. On the other hand, when washing the washing tank using such a detergent, the detergent is buried in a sponge or the like directly to wash the parts out of reach so there is a problem that does not wash well.

In order to solve this problem, Korean Patent Application No. 2000-672 discloses a laundry tub detergent composition containing sodium percarbonate and tetraacetyl ethylenediamine and an alpha olefin sulfonate sodium salt as an anionic surfactant. For the contaminants adsorbed therein for a long time, due to their strong binding power, this washing tank detergent composition alone does not provide sufficient washing effect and bleach disinfection effect.

Accordingly, the present inventors have repeatedly experimented to solve the above problems, when a combination of sodium percarbonate, tetraacetyl ethylenediamine and nonionic surfactant and anionic surfactant in a certain ratio to wash the washing tank for a long time adsorption inside the washing tank The present invention was completed by confirming that the contaminants that have been sufficiently washed and having excellent bactericidal power against both bacteria and fungi.

The present invention cleans even the contaminants adsorbed to the inside of the washing tank made of plastic or stainless steel for a long time and has excellent bleach disinfection effect, and can be washed with only rinsing and dehydration by putting it in the washing tank together with water, so the washing effect does not need to be directly rubbed. There is, and to provide a laundry detergent composition that can clean up to the inner corner of the washing tank out of reach or invisible.

1 is a photograph of a washing tank before and after washing a washing tank using a washing agent comprising the washing tank cleaning composition of the present invention;

Figure 2 is a chart showing the bactericidal power test effect on the bacteria and mold of the washing tank detergent composition of the present invention.

The present invention to achieve the above object is 60 to 90% by weight of sodium percarbonate in the total composition content; 5 to 20 weight percent of tetraacetyl ethylenediamine; At least one selected from polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, amine oxide, and polyoxyethylene lauryl amine as a nonionic surfactant, sodium lauryl sulfate as an anionic surfactant, 5 to 30% by weight of one or more mixed compositions selected from sodium alpha olefin sulfonate, sodium xylene sulfonate, sodium lauroyl salcosinate, and alpha olefin sulfonate to further improve sterilization and cleaning performance. to provide.

Sodium percarbonate used in the present invention (2Na ₂ CO ₃ · 3H ₂ O ₂ ) is an oxygen-based bleaching agent can be used to clean various organic substances in the form of compressed by the foaming of oxygen as well as bleaching by the action of hydrogen peroxide generated in the aqueous solution. Sodium percarbonate is used 60 to 90% by weight, more preferably 70 to 80% by weight relative to the total amount of the composition. This is because if too little sodium percarbonate is used, the desired bleaching and bactericidal effect cannot be obtained, whereas if too much sodium is used, there is a problem in that the cleaning effect is relatively poor because a synergistic effect cannot be obtained especially with a surfactant. However, this single component alone is still not enough to achieve the desired sterilization and cleaning effect in the present invention.

Therefore, the present invention uses 5 to 20% by weight of tetraacetyl ethylenediamine with respect to the total amount of the composition in order to help the sodium percarbonate to improve sterilization as well as cleaning ability. If the content of tetraacetyl ethylenediamine is too small, the cleaning effect cannot be sufficiently obtained, and if too much is used, there is a problem that the sterilization power is lowered due to the insufficient content of sodium percarbonate, so it is necessary to appropriately adjust these contents. However, this bleach alone has a limit to completely decontaminate the inside of the washing tank.

On the other hand, polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, amine oxide, polyoxyethylene, which are nonionic surfactants, in order to obtain a sufficient cleaning effect on contaminants adsorbed inside the washing tank for a long time. At least one selected from rurylamine, more preferably at least one selected from polyoxyethylene nonylphenyl ether and polyoxyethylene lauryl ether and sodium lauryl sulfate, sodium alpha olefin sulfonate and sodium xylene sulfo as an anionic surfactant 5 to 30% by weight of a mixed composition of at least one selected from the group consisting of nate, sodium lauroyl salcosinate, and alpha olefin sulfonate, more preferably sodium lauryl sulfate. In addition, the nonionic surfactant and the anionic surfactant may be mixed in a ratio of 1: 5 to 5: 1.

Nonionic surfactants are surfactants which are not ionized in an aqueous solution and are dissolved in various fields such as dispersants, emulsions, detergents, and dyeing aids. Anionic surfactant means that the main agent of the active agent becomes an anion by ionizing in an aqueous solution. It is used in a large amount as a cleaning agent and also acts as a foaming agent. Representative anionic surfactants include soap. If the content is too small, there is a problem that the detergency is poor, while if too much use, there is a problem that the sterilization power is lowered because it can not use sodium percarbonate, etc., especially in the case of using two or more kinds, the cleaning and sterilization effect is more excellent. do.

The present invention having the composition as described above is particularly excellent in removal rate against fungi and bacteria causing atopic dermatitis, and is very effective in removing the causative bacteria of sensitive skin and atopic dermatitis.

Hereinafter, although an Example demonstrates this invention concretely, the technical scope of this invention is not limited to these.

Example 1-3

Using the components and composition ratios of Table 1 to be described later, the washing tank detergent compositions of Examples and Comparative Examples were prepared, and each washing power was evaluated by the following two methods.

The first evaluation method is to collect the washing tanks with heavy internal contamination from the washing machines that have been used for more than 3 years, disassemble the inner tube, check the contamination status, and reassemble the washing tank cleaning composition in the washing machine. After 3 minutes of washing and stirring, the water was filled to the high water point of the washing machine, and the washing was stirred for about 3 minutes, and then the power was turned off. After leaving the water to the over flow point of the washing machine for 2 hours, washing and stirring for 2 minutes, proceeding 1 cycle in full cycle, and then decontaminating the inner tube to remove the contamination. Were taken and photographed. The decontamination ability before and after washing was visually discriminated and used as an evaluation criterion for the cleaning power test A. In particular, the cleaning power effect for Example 2 is shown in the photograph of FIG. 1.

The second evaluation method is a method of directly cutting a contaminated specimen of a washing tank to a predetermined size. The contaminated specimen of a washing tank is cut into a predetermined size, and then put into a 500 ml tap water at 40 ° C., and 2.5 g of the detergent is washed with the washed water after washing. After adding 0.5g of softening agent and leaving it for 48 hours, it was washed at 100rpm for 5 minutes in a stirred mixed cleaning power tester (terg-o-tometer, US Testing Co. Inc.) with constant rotation speed to visually determine the degree of decontamination. It was set as the evaluation criteria of cleaning power B.

The results of the two cleaning power evaluation tests were classified into very good cleaning power (◎), good (O), normal (△), and poor (×), respectively.

ingredient Example (% by weight) Comparative example (wt%) One 2 3 One 2 3 4 5 6 Sodium percarbonate 75 75 70 60 70 80 80 90 100 Tetraacetyl ethylenediamine 5 5 10 10 30 20 5 10 - Polyoxyethylene nonylphenyl ether 10 15 - 30 - - - - - Polyoxyethylene Laurie Ether 5 - 10 - - - - - - Sodium Lauryl Sulfate 5 5 10 - - - 15 - - Detergency Test A ◎ O ◎ △ △ △ △ O △ Detergency Test B ◎ ◎ O O O △ O △ △

Comparative Example 6 shows the cleaning power of the washing tank detergent using only sodium percarbonate, the cleaning power was shown to be normal, and Comparative Examples 2, 3, and 5 are the case of the washing tank cleaner using sodium percarbonate and tetraacetyl ethylenediamine, sodium percarbonate and tetra Regardless of the mixing ratio of acetyl ethylenediamine, the cleaning power was moderate.

On the other hand, as can be seen in Examples 1 to 3, the washing power of the washing tub detergent prepared by adding a nonionic surfactant and an anionic surfactant together to sodium percarbonate and tetraacetyl ethylenediamine was found to be excellent. It was much better than the cleaning power (Comparative Examples 1 and 4) of the washing tub detergent prepared by adding nonionic surfactant or anionic surfactant alone to sodium carbonate and tetraacetyl ethylenediamine.

Thus, as can be seen in the results of Examples 1 to 3, 60 to 90% by weight of sodium percarbonate, 5 to 20% by weight of tetraacetyl ethylenediamine, and 5 to 20% by weight of nonionic and anionic surfactants together. It can be seen that the cleaning power of the very excellent, and also mixing the nonionic surfactant and anionic surfactant in the ratio of 1: 5 to 5: 1 it can be seen that can increase the cleaning power of the laundry detergent. In particular, the cleaning power of Example 1 using 10% by weight of polyoxyethylene nonylphenyl ether and 5% by weight of polyoxyethylene laurie ether as a nonionic surfactant was very excellent.

Example 4-6

Using the components and the composition ratios of Table 2 to be described later to prepare the washing detergent composition of the Examples and Comparative Examples, each sterilization power was evaluated by the following method.

First, the test strain was cultured on a liquid medium and used. As bacteria, E. coli, Staphylococcus aureus, P. aeruginosa, A. niger, and C. albicans were used. In the test method, the degree of bacterial count reduction and death after 1 hour (washing time) after inoculation of the target strain to 200 ⁵ -10 ⁶ cfu / ml in a solution diluted to a certain concentration (0.5%) of the washing machine detergent in the laboratory The rate was measured, and in particular, the bactericidal effect of Example 5 is summarized in FIG.

ingredient Example (% by weight) Comparative example (wt%) 4 5 6 7 8 9 10 11 12 Sodium percarbonate 80 75 70 60 50 - - 40 50 Tetraacetyl ethylenediamine 5 5 5 10 10 10 20 - 10 Polyoxyethylene nonylphenyl ether 10 5 10 10 10 40 40 10 - Polyoxyethylene Laurie Ether - - - 10 - - - - - Sodium Lauryl Sulfate 5 10 10 - 10 - - - - Competition 0 5 5 10 15 50 40 50 40 % Mortality Escherichia coli 100 100 100 99.9 99.8 99.8 99.8 99.9 99.8 Staphylococcus aureus 100 100 100 99.9 99.8 99.8 99.9 99.9 99.9 Pseudomonas aeruginosa 100 100 100 99.9 99.8 99.8 99.9 99.9 99.9 Black mold 100 100 99.9 99.8 99.8 99.8 99.8 99.8 99.8 Candida 100 99.9 99.9 99.8 99.8 99.7 99.8 99.8 99.9

Example 4 to Example 6 of the washing tub detergent composition according to the present invention showed that the bactericidal power against bacteria and fungi is very excellent.

On the other hand, Comparative Example 8 has the same composition as the present invention, but it can be seen that the bactericidal power is reduced compared to the embodiment of the present invention, which is increased even if the content of other components when the content of sodium percarbonate is less than 60% by weight It can be seen from the results of Comparative Examples 8 to 12 that the bactericidal power is lowered compared to the present invention, and that the bactericidal power is lowered even when the surfactant is excessively contained in an amount of 40% by weight.

As described above, the present invention is polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, amine oxide, polyoxyethylene which are nonionic surfactants in sodium percarbonate and tetra acetyl ethylenediamine. Synthesized by combining at least one selected from rurylamine and at least one selected from sodium lauryl sulfate, sodium alpha olefin sulfonate, sodium xylene sulfonate, sodium lauroyl salcosinate and alpha olefin sulfonate as an anionic surfactant Thereby, it is possible to provide a laundry detergent composition which increases cleaning power to remove contaminants inside the washing tank and at the same time enhances sterilization power.

Claims (2)

60 to 90% by weight sodium percarbonate in the total composition content; 5 to 20 weight percent of tetraacetyl ethylenediamine; At least one selected from polyoxyethylene nonylphenyl ether, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, amine oxide and polyoxyethylene lauryl amine as a nonionic surfactant, sodium lauryl sulfate as an anionic surfactant, 5-30 wt% of a laundry detergent composition comprising at least one mixture selected from sodium alpha olefin sulfonate, sodium xylene sulfonate, sodium lauroyl salcosinate, and alpha olefin sulfonate. The laundry detergent composition of claim 1, wherein the nonionic surfactant and the anionic surfactant are mixed in a ratio of 1: 5 to 5: 1.