JPH1036892A - Coin cleaning composition, production thereof, and method for cleaning coin therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coin cleaning compsn. capable of safely cleaning coins in a short time by compounding water, an org. acid which corrodes metal only mildly and is harmless to the human body, a sequestering agent, a surfactant, and a bactericide. SOLUTION: This compsn. comprises 100 pts.wt. water, 30-80 pts.wt. org. acid, 5-20 pts.wt. sequestering agent, 1-8 pts.wt. surfactant, and 0.1-1 pt.wt. bactericide. Sulfamic acid is used as the org. acid since it converts daily-life substances, such as soil, oil, and protein, adhering to the surface of a coin into easily water-soluble or water-dispersible substances though its corroding action is mild. An example of the sequestering agent is citric acid. Various surfactants can be used, and cationic bactericides (e.g. hexadecyltrimethylammonium chloride) and anionic bactericides (e.g. alkylglycine) can be used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cleaning composition for coins, a method for producing the same, and a method for cleaning coins therewith. More specifically, the present invention is harmless even when the cleaning composition comes into contact with the human body during the production of the cleaning composition for coins or during the cleaning of coins using the cleaning composition for coins, etc. The present invention relates to a cleaning composition for coins which does not generate noise and a method for producing the same, and a method for cleaning coins therewith.

[0002]

2. Description of the Related Art At present, coins (used to include coins such as old coins) are used in daily activities of people.
There's no day you can't touch it. People often wash their hands before doing something everyday, but after touching coins, they don't. At present, in Japan, coins as bank convertible coupons are 1 yen, 5 yen, 10 yen, 50 yen and 100 yen.
Yen and 500 yen. Coins run from human hand to human hand and are dirty and unsanitary.

[0003] New coins depart from the bank, go to the market, gather at the bank, and go to the market. It is thought that the coins that go around the city and collect at the bank again will be washed, cleaned and sanitized in the bank as a sincere service. In a bank, several conditions naturally occur for quick cleaning. (1) Coins collected within a short time, for example, within one minute, can be washed including antibacterialization. (2) The sound when washing is minimized. (3) No unpleasant odor should be generated as in the case of ordinary metal cleaning solutions. (4) Anyone can easily wash and be harmless to the human body. And so on.

[0004] At first glance, the bad appearance is that a 5-yen coin and 1
It is a zero yen coin. The central component is copper. Copper has a lower ionization tendency than hydrogen and does not substitute for hydrogen ions in aqueous solution, so it is sufficiently corrosion-resistant at low temperatures in aqueous solutions of hydrochloric acid, phosphoric acid, sulfuric acid, acetic acid, etc. without oxidizing action . However, corrosion progresses in the coexistence state of these acids and oxygen in the air. Of course, for oxidizing acids such as nitric acid,
Corrodes and dissolves violently. On the other hand, although chromic acid is an oxidizing acid, it forms a hardly soluble chromate salt, so that corrosion does not proceed. An aqueous solution of an ammonium salt, a cyanide, or the like dissolves copper by forming a soluble complex salt.
Ammonia also has corrosive properties in the presence of moisture and oxygen. Copper oxides are relatively hard to corrode by an aqueous alkali solution, but are corroded by concentrated sodium hydroxide at high temperatures.

[0005]

The above-mentioned inorganic acids such as hydrochloric acid, alkali salts and the like have a property of corroding copper in the presence of oxygen and / or moisture. That is, it has cleaning properties. However, such an aqueous solution of an inorganic acid or the like or an alkali salt or the like has a strong irritating odor and, when touched by a human body, severely corrodes the skin and the like, which is extremely dangerous. Therefore, it is impossible to satisfy all the four conditions required when washing coins in the above-mentioned bank.

An object of the present invention is to solve the above problems and to provide a cleaning composition for coins, a method for producing the same, and a method for cleaning coins, which can satisfy all of the above four conditions.

[0007]

Means of the present invention taken to solve the above problems are as follows. According to a first aspect of the present invention, there is provided a cleaning composition for coins, wherein the cleaning composition contains water and an organic acid that has a mild corrosive action on metal and is harmless to the human body. , A cleaning composition for coins.

According to a second aspect of the present invention, there is provided a cleaning composition for coins, the cleaning composition comprising water, an organic acid having a mild corrosive action on metal and harmless to the human body, and a surfactant. And a bactericide.

According to a third aspect of the present invention, there is provided a cleaning composition for coins, wherein the cleaning composition comprises water, an organic acid which has a mild corrosive action on metals and is harmless to the human body, and the water. A cleaning composition for coins, comprising: a component for increasing hardness to be obtained and a metal ion sealant for inactivating metal ions contained in dirt.

According to a fourth aspect of the present invention, there is provided a cleaning composition for coins, wherein the cleaning composition comprises water, an organic acid which has a mild corrosive action on metals and is harmless to the human body. A cleaning composition for coins, comprising: a metal ion sealant that inactivates a component for increasing hardness and metal ions contained in dirt; a surfactant; and a bactericide. is there.

According to a fifth aspect of the present invention, the organic acid which is mildly corrosive to the metal and harmless to the human body is sulfamic acid.
Or a cleaning composition for coins according to the fourth invention.

A sixth aspect of the present invention is the coin cleaning composition according to the third or fourth aspect, wherein the metal ion sealant is a food additive.

[0013] In a seventh aspect of the present invention, the metal ion sealing agent is citric acid, gluconic acid, or glycolic acid, wherein the coin cleaning agent according to the third or fourth aspect is used. A composition.

According to an eighth aspect of the present invention, there is provided a method for producing a cleaning composition for coins, the method comprising the steps of heating water, wherein the heated water has a mild corrosive action on metal. In addition, an organic acid that is harmless to the human body, a step of dissolving by adding a metal ion sealing agent that inactivates a component that increases the hardness contained in the water and metal ions contained in the dirt, wherein the solution is warm. A method for producing a cleaning composition for coins, comprising a step of adding and stirring a surfactant and a bactericide.

According to a ninth aspect of the present invention, there is provided a method for cleaning coins with a cleaning composition for coins, wherein the cleaning method comprises a first, second, third, fourth, fifth, sixth or sixth cleaning method. 7. A method for cleaning coins with a cleaning composition for coins, comprising the steps of: inserting coins into the cleaning composition for coins according to the invention of 7 and performing ultrasonic cleaning.

According to a tenth aspect of the present invention, there is provided a method for cleaning coins with a cleaning composition for coins, wherein the cleaning method comprises first, second, third, fourth, fifth, sixth or sixth. 7. A step of putting coins into the cleaning composition for coins according to the invention of 7 and performing ultrasonic cleaning, a step of taking out coins from the cleaning composition, placing the coins in hot water and rinsing with ultrasonic waves, Taking out and drying,
This is a method for cleaning coins using the cleaning composition for coins.

In the present invention, sulfamic acid is most used as an organic acid which has a mild corrosion effect on metals and is harmless to the human body. This acid, although mildly corrosive, can convert living substances such as soil, oil, and proteins attached to the surface of coins into substances that are easily dissolved or dispersed in water by a chemical reaction. . Also, oxalic acid can be used, and other organic acids having the same effect can also be used. The organic acid is usually used in an amount of 30 to 80 parts by weight based on 100 parts by weight of water. Looking at the condition of the deposits on the surface of the coin, if the deposits are large,
An amount close to parts by weight is used. When it is small, an amount close to 30 parts by weight is used.

As the metal ion sealant, citric acid, gluconic acid, or glycolic acid is used, which has a —OH group or a —COOH group in the molecule and has a hardness in water that is an obstacle to washing. It binds to metal ions in components and dirt to make it inactive, assists in corrosion, and promotes cleaning. They are also recognized as food additives and are harmless to the human body. The citric acid, gluconic acid, glycolic acid, and the like are included in hydroxy-carbonate, amino-carbonate, and hydroxy-amino-carbonate organic acids. used. The organic acid is usually used in an amount of 5 to 20 parts by weight based on 100 parts by weight of water. Looking at the state of the deposit on the surface of the coin, if the deposit is large, an amount close to 20 parts by weight is used. When the amount is small, an amount close to 5 parts by weight is used.

As the surfactant, a cationic, anionic, nonionic, or amphoteric surfactant which functions as a detergent, such as wetting, permeation, and micellization, is used.
Non-ionic surfactants are most often used to also prevent reattachment of dirt. As the nonionic surfactant, an alkylphenol-based, ether-based, ester-based, sorbitan ester-based one, or the like is used. The surfactant is usually used in an amount of 1 to 8 parts by weight based on 100 parts by weight of water. Looking at the state of the deposit on the surface of the coin, if the deposit is large, an amount close to 8 parts by weight is used. When the amount is small, an amount close to 1 part by weight is used.

The disinfectant is used to prevent various bacteria from adhering when coins are washed and re-emerged in the market. Cationic disinfectants and anionic disinfectants are mainly used. The former includes, for example, hexadecyltrimethylammonium chloride, didecyldimethylammonium chloride, alkyldimethylbenzylammonium chloride, octadecyldimethylbenzylammonium chloride, tetraacyldimethylbenzylammonium chloride, dioleyldimethylammonium chloride, polyoxyethylene dodecylmonomethylammonium chloride, etc. Is used. For the latter, alkyl glycyl and the like are used. The disinfectant is usually water 1
0.1 to 1 part by weight is used based on 00 parts by weight.

When preparing a coin cleaning composition, the water is usually heated to 60-80 ° C. so that the other components to be added are rapidly and completely dissolved, while stirring. Done. Further, when washing coins using the washing composition for coins, ultrasonic waves are used.

(Operation) The above-mentioned cleaning composition for coins has a mild corrosive action on metals and is harmless to the human body.
Since it contains organic acids that can remove extraneous substances such as living substances on the coin surface, there is no off-flavor such as pungent odor, and indoors,
The coins can be washed safely and within a short time. When the cleaning composition contains a component for increasing hardness and a metal ion sealant that inactivates metal ions contained in dirt, the corrosive action of the organic acid in the cleaning composition can be promoted. Cleaning can be performed in a shorter time. Also, since it is a food additive, it is safe to touch the human body during cleaning.

Further, when a surfactant is also contained, it is possible to remove deposits on the coin surface from the viewpoint of detergent action such as wetting, penetration and micelle formation. In addition, re-adhesion of dirt and the like to the coin surface after washing can be prevented. Furthermore, if a bactericide is also included, the coins are washed and when circulated again, various bacteria do not adhere.

In preparing the above cleaning composition for coins, water is usually heated to 60 to 80 ° C. and the operation is carried out with stirring, so that the components to be added are dissolved quickly and completely. be able to. Moreover, when washing | cleaning a coin using the cleaning composition for coins, ultrasonic waves are used and it can be performed promptly without noise.

[0025]

EXAMPLES The present invention will be described in more detail with reference to Examples. Sulfamic acid was used as an organic acid that has a mild corrosion effect on metals and is harmless to the human body. Citric acid was used as a metal ion sealant for inactivating a component for increasing hardness contained in water and a metal ion contained in dirt. POE oleyl ether was used as a surfactant, and alkyl glycidyl was used as a bactericide. First, 100 parts by weight of water was warmed to about 80 ° C., and 40 parts by weight of sulfamic acid and 10 parts by weight of citric acid were added, stirred, and completely dissolved. While the temperature of the water had not dropped so much, 5 parts by weight of POE oleyl ether and 0.5 parts by weight of alkyl glycidyl were added, stirred, and allowed to stand at room temperature to prepare a cleaning composition for coins.

In 2 kg of the cleaning composition for coins thus prepared, 60 pieces of 5 yen coins and 60 pieces of 10 yen coins (comprising 30 coins before Heisei and 30 coins after 1989) And ultrasonic cleaning for 20 seconds. Next, the coin was removed from the coin cleaning composition, placed in hot water at 90 ° C., and rinsed with ultrasonic waves for 20 seconds. Take out, 5
It dried with the hot air of 0 degreeC. The 10-yen coin before Heisei had no terry, but it was left in an atmosphere with a relative humidity of 70% for about 1 hour to give the surface a gloss like new, in order to achieve a perfect gloss.

(Action) The most typical example is that the corrosive action on the metal is mild and harmless to the human body, and that the living substances attached to the surface of the coin can be chemically and rapidly made water-soluble. Because we use sulfamic acid,
The coins could be washed safely and in a short time, even indoors, without any off-flavors such as pungent odors. In addition, since citric acid is used as a metal ion sealing agent that inactivates a component for increasing hardness and metal ions contained in dirt, it is possible to promote the corrosive action of the sulfamic acid in a cleaning composition. The cleaning was completed within a short time. Since it is also a food additive, it was safe to touch the human body during cleaning.

Since POE oleyl ether was used as the surfactant, it was possible to remove deposits on the coin surface from the viewpoint of detergent action. In addition, reattachment of dirt and the like to the coin surface after washing could be prevented. In addition, since the alkyl glycidyl was used as a bactericide, even after the coins were washed and re-emerged in the market, various bacteria did not adhere and so-called antibacterialization was achieved.

In preparing the above cleaning composition for coins, the water was warmed to about 80 ° C. and the operation was carried out with stirring, so that the components to be added can be dissolved quickly and completely. Was. In addition, when washing coins using the above-described coin cleaning composition, since ultrasonic waves were used, glossy coins could be obtained quickly without noise. The terms and expressions used in the present specification are illustrative only and are not limiting, and exclude terms and expressions equivalent to the features described in this specification and some of them. There is no intention. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

[0030]

The present invention has the above configuration and has the following effects. The cleaning composition for coins has a mild corrosive action on metals and is harmless to the human body, but contains an organic acid capable of removing deposits on the coin surface, so that it does not have an unpleasant odor such as a pungent odor and can be used indoors. , Safely and in a short time,
You can wash coins. In the above cleaning composition,
In those containing a metal ion sealant that inactivates a component that increases hardness and metal ions contained in dirt, it is possible to promote the corrosive action of the organic acid in the cleaning composition. Cleaning can be performed in a short time. Also, since it is a food additive, it is safe to touch the human body during cleaning. In the case of containing a surfactant, it is possible to remove deposits on the coin surface from the viewpoint of detergent action. Further, re-adhesion of dirt or the like to the coin surface after washing can be prevented. Further, in the case of containing a disinfectant, when the coins are washed and re-emerged in the market, various kinds of bacteria do not adhere and so-called antibacterialization can be performed.

In the production of the above cleaning composition for coins, water is usually heated to 60 to 80 ° C., and the operation is carried out with stirring, so that the components to be added are dissolved quickly and completely. be able to. Moreover, when washing | cleaning a coin using the cleaning composition for coins, since ultrasonic waves are used, it can be performed promptly without noise.

Claims (10)

[Claims] 1. A cleaning composition for coins, comprising: water, an organic acid which is mild in corrosive action on metals and is harmless to the human body, wherein the cleaning composition is for coins. Composition. 2. A cleaning composition for coins, the cleaning composition comprising water, an organic acid having a mild corrosive action on metals and harmless to the human body, a surfactant, and a bactericide. A cleaning composition for coins, characterized in that: 3. A cleaning composition for coins, the cleaning composition comprising: an organic acid which has a mild corrosive action on water and metal and is harmless to the human body; and a component for increasing hardness contained in the water. A cleaning composition for coins, comprising: a metal ion sealing agent for inactivating metal ions contained therein. 4. A cleaning composition for coins, the cleaning composition comprising: an organic acid which has a mild corrosive action on water and metal and is harmless to the human body; and a component for increasing hardness contained in the water. A cleaning composition for coins, comprising: a metal ion sealant for inactivating metal ions contained therein, a surfactant, and a bactericide. 5. The corrosion action on the metal is mild,
The cleaning composition for coins according to claim 1, wherein the organic acid harmless to the human body is sulfamic acid. 6. The cleaning composition for coins according to claim 3, wherein the metal ion sealant is a food additive. 7. The cleaning composition for coins according to claim 3, wherein the metal ion sealing agent is citric acid, gluconic acid, or glycolic acid. 8. A method for producing a cleaning composition for coins, comprising:
The manufacturing method comprises the steps of heating water, the heated water has a mild corrosive action on metals and is harmless to the human body. Adding and dissolving a metal ion sealing agent that inactivates the metal ions to be dissolved, and a step of adding and stirring a surfactant and a bactericide while the solution is warm, A method for producing a cleaning composition for coins. 9. A method for cleaning coins with a cleaning composition for coins, wherein the cleaning method comprises the steps of: cleaning the coins in the cleaning composition for coins according to claim 1, 2, 3, 4, 5, 6, or 7; And ultrasonic cleaning. A method for cleaning coins using a cleaning composition for coins. 10. A method for cleaning coins with a cleaning composition for coins, the cleaning method comprising the steps of: washing the coins in the cleaning composition for coins according to claim 1, 2, 3, 4, 5, 6, or 7; , Ultrasonic cleaning, removing coins from the cleaning composition, placing in hot water, rinsing with ultrasonic waves, removing coins from the hot water, and drying. A method for cleaning coins with a cleaning composition for coins.