JPS62172100A - Cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) This invention relates to a spray set of cleaning agents that removes stains such as fingerprints, hand marks, oil and fat from stainless steel surfaces and prevents recontamination.

(Prior Art) Stainless steel is used in an extremely wide range of fields because it has excellent corrosion resistance and wear resistance, does not rust, and has an excellent aesthetic appearance.

However, since the surface of stainless steel is formed of a strong oxide film that is corrosion resistant, fingerprints, hand marks, etc. are likely to adhere to it. In general, metal oxides have electrical polarity due to their molecular structure, and thus have a property of interacting with polar compounds with strong affinity. Since water, fingerprints, etc. are a type of polar compound, they tend to adhere to the surface of stainless steel.

In particular, fingerprints leave a seal of fat on objects touched by secretions from the sebaceous glands of the fingertips, and the ingredients are compounds such as sodium chloride, ammonium chloride, acetic acid, acetic acid, lactic acid, urea, and fatty acids. Since these substances act as a type of corrosive agent for stainless steel, their adhesion is undesirable.

For example, stainless steel plates are used for the operation panels of automatic teller machines and banknote exchange machines, which are often used in banks, and are handled by many people on a daily basis, so fingerprints, hand marks, etc. can accumulate on the panel plates. This is not aesthetically or hygienically pleasing. For this purpose, cleaning treatment is periodically performed using commercially available detergents (surfactants), existing solvents such as alcohol, or mixed solutions thereof, but it is easy to be recontaminated by fingerprints, hand dirt, etc. during subsequent use. That is the reality.

(Problems to be Solved by the Invention) The purpose of the present invention is to solve the above-mentioned technical problem, to quickly remove fingerprints, hand marks, oil, etc. that adhere to or accumulate on the surface of stainless steel, and to remove it in a short time for subsequent use. The present invention provides a cleaning agent that forms an adsorption film on the surface of stainless steel that is resistant to recontamination by fingerprints, hand dirt, etc.

(Means for Solving the Problems) The present inventors have achieved the above object as a result of intensive studies, which consists of petroleum-based lubricating oil (A) and sorbitan fatty acid. It consists of an ester compound (B), a sulfonic acid metal salt (C), and a fluorocarbon-based pressure solvent, and contains 0.05 to 5 wt% of (Δ), (B), and (C) to the pressure solvent. It is characterized by:

Hereinafter, the cleaning agent according to the present invention will be explained in more detail.

Fingerprints, finger marks, oil, etc. adhering to stainless steel surfaces can be removed using a cleaning agent containing a petroleum-based lubricating oil (A), a sorbitan fatty acid ester compound (B), and a sulfonic acid metal salt (C). , can be cleaned in a short time. Furthermore, the treated surface forms an adsorption film on the stainless steel surface that is less likely to be recontaminated by fingerprints, hand marks, etc. during subsequent use. The mixing ratio is A: B: C-
The preferred range is 10:1:1 to 10:2:4, and the most preferred range is 7:1:2.

In the above mixing ratio, if the amount of petroleum-based lubricating oil (A) is increased, it is not preferable because the water resistance with water adsorbed on the stainless steel surface and the ability to remove fingerprints, hand marks, etc. will be reduced.

If the amount of petroleum-based lubricating oil (A) is reduced, the protective film of the lubricating oil adsorbed onto the stainless steel surface will not be adequate, and oil stains will occur in places on the stainless steel surface, which is not desirable.

Next, in order to remove fingerprints, hand marks, etc. adsorbed on stainless steel surfaces, using sorbitan fatty acid ester compound (B) and sulfonic acid metal salt (C) in combination has better removability than using each alone. , is preferable because it shows a more synergistic effect.

Furthermore, the total amount of the mixed components of the petroleum-based lubricant (A), the sorbitan fatty acid ester compound (B), and the sulfonic acid metal salt (C) to be contained in the fluorocarbon-based pressure solvent is 0.05 wt.
% In the case of no grooves, when sprayed onto the stainless steel surface, the amount of mixed components remaining on the surface is small, so
This is undesirable because the ability to remove fingerprints, hand marks, etc. will be poor. Conversely, if the content of the mixed components exceeds 5%, fingerprints,
Although there is no difference in the ability to remove hand stains, etc., there are many mixed components that remain after spraying, making the stainless steel surface too sticky and requiring a lot of effort to wipe.

The preferred content of these mixed component detergents is 31%.

Next, as a Freon-based pressure solvent, highly volatile trichlorofluoromethane (hereinafter referred to as Freon Fil) and 1, 1, 2, 2 tetrachloro 2 difluoroethane (hereinafter referred to as Freon F12) were used for mixed cleaning. It sprays the agent. Freon Fil and Freon F12
When filling a pressure solution layer and injecting it, Freon Fil regulates the internal pressure of the pressure can itself and adjusts the size of the spray particles, while Freon F12 increases the internal pressure of the can and injects the mixed components. Therefore, it is preferable that the mixing ratio of Freon Fll and Freon F12 be in the range of 30:0 to 10:90.

The most preferred range is 20:80.

Next, each component of the cleaning agent used in the present invention will be explained.

The petroleum-based lubricating oil is a lubricating oil obtained by hydrorefining or cracking of petroleum fractions or residual oils, and is preferably a highly refined odorless base oil with no sulfur content.

, Sorbitan fatty acid ester compounds include, for example, sorbitan monolaurate, sorbitan monostearate,
Sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, etc. are used, and these are petroleum-soluble nonionic compounds. It is a surfactant. Therefore, it goes without saying that the object of the present invention can be achieved even if the surfactant is a petroleum-based nonionic surfactant other than those mentioned above.

Sulfonic acid metal salts include, for example, petroleum sulfonic acids obtained by sulfonation of aromatic hydrocarbon components in lubricating oil fractions, synthetic sulfonic acids such as nonylnaphthalene sulfonic acids, and heavy alkylhenzenesulfonic acids. Alkali metal or alkaline earth metal salts are used, with sodium, calcium and barium salts being generally preferred.

Here, there are no particular restrictions on the method of mixing the cleaning agent of the present invention and the method of encapsulating it in a spray, and any conventional method may be employed.

(Function) The function of each component in the cleaning agent according to the present invention is estimated as follows.

Since the sorbitan fatty acid ester compound (B) is surface active, it has the effect of cleaning moisture and stains such as fingerprints and hand marks already adsorbed on the stainless steel surface. In other words, it has water displacement properties and the ability to remove fingerprints and hand marks.

Sulfonic acid metal salts have the ability to remove fingerprints, hand marks, etc., and simultaneously adsorb onto the stainless steel surface to form a protective film, working together with lubricating oil to prevent recontamination due to adhesion of fingerprints, hand marks, etc.

Petroleum-based lubricating oils lack the spreadability of oil films when water is adsorbed on metal surfaces, but when there is a protective film (monomolecular film) formed by the above-mentioned sulfonic acid metal salts, a thicker protective film is formed on top of the protective film (monolayer film). Since a mixed adsorption film of lubricating oil is formed, the spreadability of the lubricating oil film on the metal surface is also excellent.

The cleaning agent according to the present invention is an optimal mixture of the above three components, so when removing moisture, fingerprints, and hand marks adsorbed on the stainless steel surface, it can be sprayed onto the area to remove fingerprints, hand marks, etc. At the same time as removal, an adsorption protective film is formed on the stainless steel surface by metal sulfonate, and on top of that, a thick mixed adsorption film is formed with lubricant to protect the stainless steel surface, preventing re-contamination from fingerprints, hand marks, etc. This will prevent the shine and maintain the luster of the stainless steel surface for a long time.

As mentioned above, sebaceous gland secretions such as fingerprints and hand marks contain corrosive substances such as salt, so if left as is, the surface of even stainless steel will corrode and eventually lose its surface luster. .

However, the cleaning agent according to the present invention completely prevents this risk and exhibits similar actions and effects on metal surfaces other than stainless steel, so it can be used in a wide range of applications.

(Example) Hereinafter, the present invention will be explained in more detail by comparing the example, the comparative example, and the conventional example.

The stainless steel operation panel of an automatic teller machine installed in a bank and used on a daily basis was used as a test sample as a temporary sample of Stainless Steel II. Find out.

To test the removability, first use a commercially available neutral detergent to sufficiently remove fingerprints, finger marks, and other stains from the stainless steel operation panel using a new cloth, then use a sample that has actually been used for three days. The removability of Examples, Comparative Examples, and Conventional Examples will be investigated.

Non-staining property was determined by examining the removability, and then actually using the product as it was for 3 days, and then checking for the presence or absence of adhesion due to fingerprints, hand marks, etc.

The cleaning agent was prepared by filling a 100 ml spray with the components of the Examples and Comparative Examples shown in Table 1, and adding 20% of the Freon Fil.
A pressure solvent consisting of 80% of Freon F12 is injected,
After spraying a total amount of 100g onto the sample surface, remove fingerprints and hand marks using a new cloth.

In the conventional example, a commercially available detergent was used, and in the conventional example 1, a commercially available spray cleaner using a pressure solvent was sprayed onto the four sample surfaces, and after a few minutes, the deposits on the sample surface were removed with a new cloth.

Conventional Example 2 uses a neutral detergent diluted with appropriate water.
Soak it in a new cloth to remove any deposits on the sample surface.

The results of these tests are shown in the lower part of Table 1.

As can be seen from the results, Examples 1 to 3 are the same as Comparative Examples 1 to 4.
And compared to Conventional Examples 1 and 2, it is found that fingerprints, hand marks, etc. are easily removed, re-contamination is less likely to occur, and the surface is not sticky.

(Effects of the Invention) Fingerprints, hand marks, etc. are easily adsorbed on the surface of stainless steel, and even if they are sufficiently removed, they are recontaminated with fingerprints, hand marks, etc. However, the cleaning agent according to the present invention
Since it is sprayed using Freon F12 and CFC, the mist of the cleaning agent when sprayed penetrates into the details of the complex shape and wets the surface to be treated, displacing the moisture adsorbed on the stainless steel surface and removing fingerprints, fingerprints, etc. Instantly removes dirt from your hands,
In addition, since a thick mixed adsorption film is formed using the adsorption protection film of the sulfonic acid metal salt and the lubricant, it is effective in preventing re-contamination by fingerprints, hand marks, etc. and maintaining the gloss of the stainless steel surface for a long period of time. Moreover, the treatment operation is carried out by wiping the sprayed stainless steel surface with a new cloth.

As described above, the cleaning agent of the present invention achieves the object of the present invention only by combining specific components and adding a specific amount of the ingredients to a pressure solvent. This is not something that can be achieved with the example.

Claims (1)

[Claims] It consists of a petroleum-based lubricating oil (A), a sorbitan fatty acid ester compound (B), a sulfonic acid metal salt (C), and a fluorocarbon-based pressure solvent.
) in a total amount of 0.05 to 5 wt%.