KR950007725B1 - Dry-cleaning detergent - Google Patents

Abstract

The solvent having excellent detergency and stability for dry cleaning is composed of 95.5-97.6 wt% normal paraffin having a number of carbons, 8-10, 0.4-1.0 wt% nonylphenol ethoxylate and 2.0-3.5 wt% 3-methyl-3-methoxybutanol. This normal paraffin based solvent decomposes easily the underground bacteria and activated sludge, compared with petroleum based solvents, because of its good distillation property. And minimizing the number of noxious aromatic hydrocarbon, this solvent is not harmful for the human body in handling.

Description

Solvents for Dry Cleaning

The present invention relates to a solvent for dry cleaning. More specifically, the present invention relates to a dry cleaning solvent which is improved in order to be stable in handling and excellent in cleaning effect by subjecting normal paraffin as a cleaning solvent and mixing nonylphenol ethoxylate thereto.

Conventional dry cleaning solvents are mainly petroleum solvents such as kerosene fraction, chlorine solvents such as 1,1,1-trichloroethane, trichloroethylene, 1,1,2-trichloroethane or perchloroethylene, and fluorinated chloride. Fluorine-based solvents such as fluorine were used, and as dry soap, a surfactant or a solvent auxiliary agent was mainly added.

These conventional petroleum solvents are less expensive to wash and less discolored than other solvents, and have less wear on buttons and accessories, but are highly flammable and pose a risk of fire and harmful substances. There is a problem that the effect on the human body is very large, the cleaning power is weak, and the drying is not possible in the machine itself.

In addition, perchloroethylene has no disadvantages of fire and strong cleaning power, but it has a disadvantage of requiring careful attention because it is harmful to the human body due to expensive laundry facilities and strong toxicity. Hydrogen fluoride fluoride is advantageous because it is less toxic and less flammable and faster to dry, but it is difficult to commercialize because it requires a lot of facility cost and high solvent value.

In order to improve the above problems, the conventional Korean Patent Publication No. 88-1146 uses petroleum solvents (No. 5) as the main raw materials, trichloroethylene 2 to 3%, perchloroethylene 1.5 to 25.5, and trifluorination. A technique for producing a dry cleaning solvent by mixing 2 to 2.5% of ethane trichloride has been disclosed. In this case, by lowering the fractionation phase temperature and the aniline point temperature and increasing the flash point temperature, the cleaning power and washing power are improved, and the risk of fire is increased. Although some improvements have been made, the body contains a large amount of harmful substances, rather, the result of not receiving the response from the cleaners can not be sufficiently solved the conventional problems by using the existing solvent.

In addition, Korean Patent Publication No. 90-5570 proposes a dry cleaning solvent in which a low molecular weight petroleum olefin is mixed with a petroleum solvent, a chlorine solvent or a fluorine solvent. Although there are some drawbacks, there is still room for improvement in topical and toxic issues by using significant amounts of petroleum-based olefins.

Therefore, the present inventors mainly use normal paraffin, which is very excellent in the stability of the conventional handling but has been avoided for reasons of poor cleaning effect, and when nonylphenol ethoxylate is added thereto as a surfactant, it is of course not only in terms of handling stability but also in cleaning. The present invention was completed by finding that the effect was greatly improved, the drying speed was fast, and there was no residual odor.

Accordingly, an object of the present invention is to provide a solvent for dry cleaning of a new composition having 8 to 10 carbon atoms of normal paraffin as a main component and a nonionic surfactant mixed therein to improve handling stability and cleaning effect.

Hereinafter, the present invention will be described in detail.

In the solvent for dry cleaning using normal paraffin, the main component is 95.5-97.6 weight percent of normal paraffin having 8 to 10 carbon atoms, and 0.4 to 1.0 weight percent of nonylphenol ethoxylate and 3-methyl-3. It is characterized by containing 2.0-3.5 weight% of methoxybutanol.

Referring to the present invention in more detail as follows.

The present invention uses a normal paraffin that has been used as a dry cleaning solvent as a main component, but the carbon number of 10 or less, preferably 8 to 10 selected from the non-ionic surfactant nonyl phenol ethoxylate (Nonylphenol ethoxylate) was added to increase the cleaning power, the biggest weakness of normal paraffin, to be an ideal dry cleaning solvent.

The use of normal paraffin in the present invention minimizes aromatic hydrocarbons that are harmful to the human body, so that the flash point is high, and thus, the safety of handling can be completely secured, and harmful odors can be prevented. It shows more advantageous distillation properties than the system solvent, and with respect to the problem of water pollution in recent years, there is an advantage that it is easily decomposed to the underground bacteria and activated sludge.

Particularly, according to the present invention, among the normal and raffins, those having 8 to 10 carbon atoms are used, which has a flash point of 58 ° C. or higher, which is superior to conventional solvents, is neutral, and has an initial temperature of 167 ° C. or more, a 50% outlet temperature of 170 ° C. Since the kind point is low with the kind temperature below 172 ℃, the risk of fire is remarkably improved, and the drying time is shortened.

When the carbon number of the normal paraffin used in the present invention is more than 10, not only the volatility is low and the solubility is lowered, but also the classification temperature is high, so it is not good because it is outside the range of the industrial standard (No. 5), the middle class temperature of 210 ° C. or less, and the carbon number is 8 or less. In this case, too, the solvent composition is difficult and there is a problem that the washing power is reduced due to excessive volatility.

In addition, in the present invention, by using the normal paraffin having a purity of 99.9% or more of the colorless low odor, the content of anti-hydrocarbons harmful to the human body is reduced to 500 ppm or less, thereby preventing various human pollution such as odors, anemia or dizziness.

However, in the case of such normal paraffin, since the aniline point is relatively high at 78 ° C. or lower, there is a drawback that the washing power is poor. In order to solve this problem, the present invention uses a small amount of a nonionic surfactant to compensate for the washing power.

As the nonionic surfactant used in the present invention, nonylphenol ethoxylate is used at a ratio of 0.4 to 1.0% by weight, and if the amount thereof is less than 0.4% by weight, the washing power is lowered and an excess amount of 1.0% by weight is added. It is not preferable because there is a poor solubility problem compatibility with normal paraffins.

In addition, according to the present invention, in order to increase the solubility of the nonionic surfactant used for increasing the washing power as described above, 3-methyl-3-methoxybutanol is used as a special solvent, which is used less than 2.0% by weight. There is a problem that the solubility of the surfactant is lowered and the cleaning power is lowered. If it is used in excess of 3.5% by weight, drying may be delayed, which is not preferable.

Such a dry cleaning solvent of the present invention is not only excellent in cleaning power and stability in the composition as described above, but also as a solvent that requires proper dissolving power without breaking each characteristic of the material according to the recent diversification and quality of the laundry. Suitable.

In other words, the conventional solvent is too strong dissolving power, there was a problem such as gradation, fading, touch and softness (smooth) in some of the laundry material or high-quality clothing, the solvent according to the present invention In addition, it shows perfect cleaning power, but it is not too strong or too weak. It also shows proper solvent power, and it is very suitable for air pollution prevention and toxicity control.

The solvent characteristics of the present invention as described above are superior to any conventional solvents.

First, it is low odor and low toxicity. Conventional solvents had a strong irritating odor, but the solvent of the present invention has almost no odor because the aromatic component is less than 500ppm, thus providing an unpleasant environment for workers or odors in the finished clothing, and the aromatic component Almost no vapor toxicity is significantly lowered, which solves the problem of worker health and air pollution concerns.

Second, the drying time is shortened. The aromatic used as a conventional solvent has a problem of delaying drying due to strong cleaning power but high classification temperature, but the solvent of the present invention has almost no aromatic component, so that drying is fast and work efficiency is greatly improved. Excellent for cleaning high-quality natural fibers that require drying.

Third, maintain proper cleaning power. Since the solvent of the present invention hardly uses the aromatic component, it is possible to solve the lowering of the cleaning power resulting from the use of an appropriate surfactant to maintain a proper cleaning power without excess and deficiency.

Fourth, the touch and flexibility after washing are excellent. The solvent of the present invention improves the feel and flexibility of fibers compared to conventional petroleum solvents, and does not cause any problems such as buttons and accessories or resin processing, which requires careful attention to handling not only wool and high-quality clothing products. There is also an effect that can be used with confidence in the material.

Hereinafter, the present invention will be described in detail with reference to Examples.

EXAMPLES 1-5

Next, dry cleaning solvents were prepared by mixing carbonaceous carbon-based normal paraffin, nonylphenol ethoxylate, and 3-methyl-3-methoxybutanol according to the composition of Table 1 below. Is shown in Table 2 below.

This test result was tested by comparing the quality assurance standard of KS standard (KSM 2611) by Korea Inspection Institute of Machinery-Metre & Petro-Chemical, and compared with the conventional products.

TABLE 1

TABLE 2

(Note) 1) The * mark in the quality assurance standard is KS standard (KSM 2611).

2) Product A: ˝SOL-201L˝, Honam Refinery Products

3) Product B: ˝EXSOLD-40˝, manufactured by Exxon.

[Test Example]

The results of measurement of each test result using Example 1 and the product and the existing product (SOL-201L, Honam essential oil) directly as a dry cleaning solvent for washing are shown in Table 3 below.

TABLE 3

^{* In} Table 3, the washing state examines the overall washing power and feel, flexibility and washing state.

As can be seen from the above embodiment, the solvent of the present invention was able to solve the problems shown in the conventional dry cleaning solvent, the result is a high flash point, as shown in Table 2 and Table 3, the first flow temperature, 50 Not only the% runoff temperature and the end point temperature were much lowered, but also the aromatic hydrocarbon content was lowered, resulting in better overall performance than existing products in terms of overall cleaning conditions and risks.

Claims (1)

In the dry cleaning solvent using normal paraffin, the main component is 95.5 to 97.6% by weight of normal paraffin having 8 to 10 carbon atoms, and 0.4 to 1.0% by weight of nonylphenol ethoxylate and 3-methyl-3-methoxy A solvent for dry cleaning, comprising 2.0 to 3.5% by weight of butanol.