JPH0959691A - Detergent composition for removing oil film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent composition which can effectively remove an oil film on a window glass particularly of, e.g. an automobile and can give good visibility. SOLUTION: This composition is composed mainly of a mixture of 100 pts.wt. colloidal solution containing colloidal inorganic particles and 1-100 pts.wt. rare earth element compound and/or cesium compound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition for removing an oil film, which is capable of effectively removing an oil film particularly for windshields of automobiles and the like, and which provides good visibility.

[0002]

2. Description of the Related Art Dirt adhering to windshields of automobiles includes various types such as pitches on the road, tars, oil components in the air, wax components of automobile waxes, silicone oils and the like. Of these, oily stains are difficult to remove and cause glare and poor visibility when driving on a rainy day. In order to remove the stains on the window glass, a technique of spraying a cleaning agent containing a surfactant as a main component has been conventionally used. However, it is not enough to remove the stubborn oil film, and it is not enough to secure a sufficient field of view during running. Therefore, in order to remove the stubborn oil film, a technique of using an abrasive in combination with a cleaning agent has been performed. For example, JP-A-2-218799 discloses a composition in which an abrasive such as fine silica is added to a surfactant. However, the composition to which the abrasive has been added has a problem that the abrasive is clogged in the hole of the nozzle when the composition is sprayed on the window glass by using a spray.
Therefore, it is necessary to apply the composition directly to the window glass surface, but if the applied composition is dried as it is, the abrasive adheres to the glass surface, which impairs the visibility. To remove such dry abrasive, wash with water or
Or you need to wipe it off with a towel. From this,
Although the composition using the abrasive has a sufficient oil film removing effect,
The workability is not simple. As described above, a composition having good workability and capable of completely removing an oil film has not yet been developed.

[0003]

DISCLOSURE OF THE INVENTION The present invention is particularly useful for removing windshields, such as automobiles, which can easily remove an oil film which is a persistent stain, which has been a drawback so far, and which has good workability. In the development of cleaning composition.

[0004]

With respect to the above problems, the present inventors have made various studies on oil film removing agents having particularly good workability, and have completed the present invention. That is, the present invention is based on 100 parts by weight of a colloidal solution containing colloidal inorganic particles, and
Alternatively, the cleaning composition for removing an oil film is characterized by using 1 part by weight to 100 parts by weight of a cesium compound.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A colloidal solution containing colloidal inorganic particles (hereinafter abbreviated as colloidal solution) means that inorganic particles such as silicic acid, alumina, and cerium oxide are 10 ³ to 1 1.
It means that it forms an atomic population of ⁰⁹ and stably exists in an aqueous solution, and generally, its concentration is 5 to 50% by weight. Such a colloidal solution is easily available, and typical examples thereof include "Snowtex" manufactured by Nissan Chemical Industries, Ltd. and "alumina sol" manufactured by Kawaken Fine Chemical Co., Ltd. Among them, a colloidal solution containing 10 to 20% of silicic acid anhydride is particularly preferable, and this is preferable from the viewpoint of both oil film removability and workability. As rare earth compounds, compounds such as lanthanum and cerium are used, and these can be used as halides, nitrates, hydroxides, oxides and the like. Among them, cerium chloride and cerium acetate are particularly preferable. The cesium compound is its carbonate,
Nitrate, chloride and iodide can be used, and cesium chloride or cesium nitrate is particularly preferable.

As described above, a detergent composition for removing an oil film is manufactured by using a rare earth compound and / or a cesium compound in a colloidal solution. That is, to the composition obtained by adding 100 parts by weight of the colloidal solution with a rare earth compound or a cesium compound, and a mixture of a rare earth compound and a cerium compound in a proportion of 1 to 100 parts by weight, water and, if necessary, an acid, an alcohol or a fragrance. A surfactant composition or the like is added to obtain a detergent composition for removing an oil film. When the amount of the rare earth compound and / or the cesium compound is 1 part by weight or less, it is insufficient to remove the oil film adhering to the glass surface, which is the effect of the present invention, and when it is used over 100 parts by weight, the applied composition adheres to the glass surface. However, it is not preferable because the wiping off becomes bad. The total amount of the colloidal solution and the rare earth and / or cesium compound in the detergent composition is usually used in the range of 0.5 to 80% by weight. In the detergent composition, acetic acid, lactic acid, phosphoric acid, citric acid, malic acid and other acids, ethanol, isopropanol, dipropylene glycol, ethylene glycol and other alcohols, anionic and nonionic compounds may be added as necessary. Surfactants such as can be used.

[0007]

EXAMPLES The present invention will be further described below with reference to examples. Moreover, the present invention is not limited to the following examples. Example 1 1 part by weight of cerium chloride was added to 5 parts by weight of a colloidal solution containing 20% silicic acid anhydride (Snowtex manufactured by Nissan Kagaku Co., Ltd.), and 94 parts by weight of water was added to the composition to remove the oil film. Got 1. Example 2 A cleaning composition 2 for removing an oil film was obtained in the same manner as in Example 1 except that cerium chloride was replaced with cesium chloride. Example 3 Cerium acetate 1 was added to 10 parts by weight of a colloidal solution containing 20% silicic acid anhydride (Snowtex manufactured by Nissan Chemical Industries, Ltd.).
1 part by weight of acetic acid and 88 parts by weight of water were added thereto to obtain a cleaning composition 3 for removing an oil film. Example 4 5 parts by weight of a colloidal solution containing 20% of anhydrous silicic acid (Snowtex manufactured by Nissan Chemical Co., Ltd.) was added, and 1 part by weight of cesium chloride, 2 parts by weight of cerium chloride and water 9 were added thereto.
2 parts by weight was added to obtain a cleaning composition 4 for removing an oil film. Example 5 5 parts by weight of cesium nitrate was added to 5 parts by weight of a colloidal solution containing 20% of anhydrous silicic acid (Snowtex manufactured by Nissan Kagaku Co., Ltd.), and 90 parts by weight of water was added to the composition to remove the oil film. Got 5.

Comparative Example 1 0.02 parts by weight of cerium chloride and 94.9 parts of water were used.
A cleaning composition C1 for removing an oil film was obtained in the same manner as in Example 1 except that the amount was 8 parts by weight. Comparative Example 2 A cleaning composition C2 for removing an oil film was obtained in the same manner as in Example 1 except that 95 parts by weight of water was used without using cerium chloride. Comparative Example 3 99 parts by weight of water was added to 1 part by weight of a surfactant to obtain a cleaning composition C3 for removing an oil film. Comparative Example 4 15 parts by weight of an abrasive, a small amount of a thickener, 3 parts by weight of a water-soluble solvent, and a trace amount of a fragrance were added, and 80 parts by weight of water was added thereto to obtain a cleaning composition C4 for removing an oil film.

The compositions 1 to 5 and C1 to C4 for oil film removal obtained in the above Examples and Comparative Examples were used, and the effects were evaluated by the following test methods. <Determination method of oil film removal effect> Commercially available silicone water repellent (made by Nishinodo Co., Ltd.)
An artificial oil film was made by applying Rain X) to a thickness of 10 microns. Compositions 1 to 5 and C1 to C4 for removing an oil film were sprayed onto the artificial oil film, and an excess cleaning agent was lightly wiped off with a towel and dried, and then the oil film removability on the surface of the windshield was evaluated. The results are shown in Table 1. The removal degree was judged by the following criteria by visual judgment. When the oil film removing agent was not used, the surface of the window glass was glared, which caused poor visibility.

[00010]

[Table 1] *) In Examples 1 to 5 and Comparative Examples 1 to 3, after spraying, the cleaning agent was lightly wiped off with a towel and dried. Further, Comparative Example 4 was dried using a sponge because a spray cannot be used. However, since the polishing agent remained white, it was necessary to wipe it off with a towel. Rank Oil film removability ○ Good visibility △ or oil film remains × Oil film completely remains

[00011]

From the results shown in Table 1, the composition for removing an oil film according to the present invention is excellent in oil film removing property and workability,
It is possible to effectively remove the oil film on the glass surface or plastic surface of an automobile.

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Claims (3)

[Claims] 1. A composition comprising 100 parts by weight of a colloidal solution containing colloidal inorganic particles and 1 to 100 parts by weight of a rare earth compound and / or a cesium compound as a main component. A cleaning composition for removing an oil film. 2. The cleaning composition for removing an oil film according to claim 1, wherein the rare earth compound is a cerium compound. 3. The cleaning composition for oil film removal according to claim 1, wherein the cesium compound is cesium chloride or cesium nitrate.