JP2621092B2 - Pretreatment composition for mud stain, cleaning method and cleaning agent - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pretreatment agent composition for washing clothes, cloth products and the like to which mud stains have adhered, and a cleaning method using the same.
And a cleaning agent for mud dirt.

2. Description of the Related Art Soil attached to clothing varies considerably depending on the season and environment, but is roughly classified into organic soil and inorganic soil. Among them, most of the organic dirt is dropped off when a commercially available detergent is used, and it can be almost completely removed by increasing the detergent concentration or repeating the washing. In contrast, mud stains, which are representative of inorganic stains, are hard to remove with ordinary detergents, as we feel everyday. Mud dirt cannot be completely removed even if the detergent concentration is increased or washing is repeated. The only practical way to deal with this is to increase the mechanical power during washing. However, in a current washing machine, any further increase in mechanical power causes damage to the clothes, and the clothes are washed one by one. In fact, they give up because washing too many sheets places too much burden on them. Developing a composition that efficiently cleans such mud stains has been a common dream of detergent composition developers.

On the other hand, a composition using an organic carboxylic acid builder as a detergent composition resistant to mud stains (JP-A-61-2800).
And a composition containing a cationic surfactant (JP-A No.
JP-A-54-39411 and JP-A-59-166599), and a composition comprising a soap and a nonionic surfactant (JP-A-59-179599) have been provided, but still sufficient effects can be obtained. Not.

As additives other than surfactants, those using a bleaching agent (JP-A-62-230897) and those using an enzyme (cellulase) (JP-A-57-108199) have been proposed. However, it does not show an innovative mud stain cleaning effect.

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a pretreatment composition that breaks down stubbornly adhered to clothes and the like and a dropping method, and a cleaning method and a cleaning agent using the same. .

Constitution of the invention The pretreatment composition for mud dirt of the present invention is a composition used for pretreatment of alkali cleaning, and comprises an acidic composition containing a compound having at least one phosphonic acid group in a molecule. It is characterized by.

Further, the cleaning method of the present invention is characterized in that after the above-mentioned pretreatment composition is treated, it is washed with an alkaline detergent.

Further, the two-part cleaning agent of the present invention is characterized in that the above-mentioned pretreatment composition for mud dirt is used as a first part and an alkaline cleaning agent is used as a second part.

 Hereinafter, the present invention will be described in more detail.

Compounds containing at least two phosphonic oxygens in the molecule include the following.

1-hydroxyethane-1,1-diphosphonic acid, aminotri (methylenephosphonic acid) ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid), 1-hydroxyethylidene 1
-1,1-diphosphonic acid, 4-dimethylamino-1-hydroxybutane-1,1-diphosphonic acid, pyrrolidone-5,5-
Diphosphonic acid, 1-aminoethane-1,1-diphosphonic acid, dimethylaminomethane diphosphonic acid, N-carboxymethylamino-alkanediphosphonic acid, other azacycloalkane-2,2-diphosphonic acids having a cyclic portion, cyclic Phosphonic acids such as aminophosphonic acid.

Orthophosphoric acid having one phosphonic acid group in the molecule, and metaphosphoric acid, pyrophosphoric acid, triphosphoric acid, and tetraphosphoric acid in which this is polycondensed and has two or more phosphonic acid groups per molecular unit , Hexametaphosphoric acid, polyphosphoric acid and the like can also be used.

The pretreatment composition of the present invention exhibits acidity and is preferably used at a pH of less than 6. The lower the pH, the higher the mud dirt cleaning effect. However, if the acidity is too high, it is practically preferred to be 2 or more from the viewpoint of lowering the pH of the alkaline cleaner to be subsequently used to lower the detergency of sebum dirt and safety. Further, the pH is preferably less than 5, since the mud dirt cleaning power decreases as the pH approaches neutrality. These pH
It is adjusted using a suitable alkaline compound such as caustic soda, caustic potash, and ammonia, or, if necessary, an acidic compound.

When the pretreatment composition is directly applied and used, the concentration of the phosphonic acid group-containing compound in the pretreatment composition is 0.01 to
It is preferably 10% by weight, more preferably 0.5 to 5% by weight. If the concentration is lower than 0.01% by weight, the mud dirt cleaning effect is reduced. On the other hand, when the content exceeds 10% by weight, the pH of the alkaline detergent to be subsequently used is reduced, and the mud stain cleaning effect is saturated when the content is 10% by weight or more.

As a coating method, this may be applied as a solution to the mud soiled portion, or it may be applied as a whole paste or solid to the mud soiled portion for treatment. Thereafter, the substrate is washed with an alkaline cleaning agent.

It is also possible to make the acidic composition into a solution, soak the object to be washed contaminated with mud, and then wash it with an alkaline detergent. In this case, the amount of the pretreatment composition and the amount of the phosphonic acid in the pretreatment composition are adjusted so that the concentration of the phosphonic acid group-containing compound in the solution is 0.01 to 10% by weight, more preferably 0.5 to 5% by weight. The amount of the group-containing compound to be added is determined. Also in this case, the pretreatment composition may be solid or liquid.

However, compared with the coating method, the dipping method requires a large amount of the pretreatment composition to wash the same amount of the article to be washed.

The phosphonic acid group-containing compound may be used alone, but in addition to the above-mentioned pH adjuster, for the purpose of improving the permeability of the solution to the cloth to be washed and the cleaning power of sebum dirt. Surfactants such as anionic, nonionic, cationic and amphoteric surfactants can also be present in the composition. In addition, a thickener in the case of a liquid composition, a solidifying agent for molding into a solid, and the like can also be made to coexist, and various additives are made to coexist for improving stability during storage of a solution or a solid. You can also. Furthermore, pigments, fragrances, bleaching agents, fluorescent agents, enzymes,
A sizing agent and the like may be allowed to coexist.

As the alkaline detergent to be used after pre-treatment with the present composition, a detergent having a solution pH of 8 or more at a working concentration, which is generally used at home at present, is preferable. A surfactant or other builder may not be contained, and the second agent may be simply formed by using an alkali agent.

Washing with an alkaline detergent mainly removes sebum stains and the like.

Alkaline detergents containing surfactants represented by household detergents include surfactants such as anionic surfactants, nonionic surfactants, amphoteric surfactants and cationic surfactants, and alkalis such as carbonates and silicates. It contains builders, calcium ion trapping builders such as ethylenediaminetetraacetate, zeolite and polyacrylate, anti-soil refining agents, viscosity modifiers, sodium sulfate, sulfites, enzymes, fluorescent agents, fragrances, dyes and the like. This dosage form may be any of a powder form and a liquid form.

Further, as the alkaline agent, any one which shows alkalinity, such as sodium hydroxide, sodium carbonate, sodium silicate, ammonia, and alkylethanolamine, can be used. These are used as alkaline detergents as they are or in combination with additives such as sodium sulfate and water. This form may be any of liquid, powder, and the like.

The cleaning agent for mud dirt of the present invention is provided as a two-part cleaning agent using such an alkaline cleaning agent as a second agent and the above-described pretreatment composition as a first agent. At the time of cleaning, the first agent and the second agent may be sequentially applied as described above.

Effects of the Invention According to the present invention, stubborn mud stains can be removed by pre-treating the mud stains of an object to be washed with an acidic composition containing a phosphonic acid group-containing compound.

In addition, by subsequently washing with an alkaline detergent, dirt on the article to be washed is totally removed, and an excellent washing effect can be obtained.

The pretreatment composition and the cleaning method of the present invention can be used as a two-part detergent in addition to clothing, cloth products such as athletic shoes and canvas, and further, mud such as windows, cars (tires and car bodies), and agricultural implements. Can be used for cleaning all areas that may be contaminated.

Hereinafter, the present invention will be described specifically with reference to Examples. Prior to this, the evaluation method used in Examples will be described.

Mud dirt coating and washing evaluation method <Method A> White socks of cotton / synthetic fiber blend are distributed to each household, and they are actually worn to collect those with mud dirt. Then, the portion soiled with the mud is cut into small pieces of about 3 × 3 cm to obtain a mud soiled cloth. The test composition is added to 10 pieces of the mud stain cloth 0.6 ml /
Apply one by one. Next, a total amount of the cloth is adjusted to 30 g by adding a charge cloth. Five minutes after the application, the cloth is washed with a commercially available alkaline detergent (Hitop [trademark]: manufactured by Lion Corporation: pH at the working concentration = 10.5). The detergent concentration is 0.083%
It is. Coexisting sebum stain 0.6% owf, washing temperature 25 ° C, 3 ゜ DH
Under the condition of 900 ml of the washing solution, using a terg-0-Tometer,
Rinse twice for 10 minutes and 3 minutes. The detergency of the mud soiled cloth at this time is calculated from the following equation by measuring the reflectance of the mud soiled cloth before and after cleaning.

(R _W : reflectivity of the soiled dirt cloth after washing R ₀ : reflectance of socks before wearing R _S : reflectance of socks [mud soiled cloth] after wearing) <Method B> In the same manner, the test composition was applied, a charge cloth was added, and 5 minutes after the application, an aqueous solution of sodium carbonate (pH 11.0) was used as an alkaline detergent, and a washing temperature of 25 ° C.
Washing is performed in the same manner as in Method A under the conditions of 3 ゜ DH and 900 ml of a washing solution, and the washing power is evaluated.

Example 1 A phosphonic acid group-containing compound shown in Table 1 was mixed with the following common composition and adjusted to a set pH value using a sulfuric acid aqueous solution or caustic soda aqueous solution, and the remaining water was added to 100 wt%.
As a result, a solution-like pretreatment agent for mud soil of Sample Nos. 2 to 22 was obtained. Common composition wt% hydrogen peroxide 2 Nonionic surfactant (sophthanol 90) 0.5 Xanthan gum 0.1 Fragrance 0.3 Dye 20 ppm Using this solution, the mud stain cleaning power was evaluated according to the above test method, and the results are shown in Table 1.

In addition, the sample No. 1 was washed with only a commercially available alkaline detergent without performing a pretreatment on the mud soiled cloth.

Claims (3)

(57) [Claims] 1. A pretreatment composition for mud soil, comprising an acidic composition containing a compound having at least one phosphonic acid group in a molecule, and used for pretreatment of alkali washing. 2. A method for cleaning mud and dirt, comprising pretreating with the composition according to claim 1 and then cleaning with an alkaline cleaning agent. 3. A cleaning agent for mud stains, wherein an acidic composition containing a compound having at least one phosphonic acid group in a molecule is used as a first agent, and an alkaline cleaning agent is used as a second agent.