JPH07233395A - Detergent and cleaning method - Google Patents

Abstract

PURPOSE:To obtain a detergent not causing run-out of a cleaning solution and falling of drops even in applying to inclined faced, vertical faces, ceiling faces, etc., of various kinds of structures and capable of exhibiting sufficient cleaning effect by retaining the detergent for a long time and to provide a cleaning method having good workability. CONSTITUTION:An one-pack type detergent containing a detergent component (e.g. surfactant) and a gel-forming component (e.g. agar) or a two pack-type detergent consisting of a liquid A containing a detergent component (e.g. surfactant) and a gelling agent and a liquid B containing a gel-forming component (e.g. sodium alginate) gelatinized by the gelling agent is provided as this detergent. As the cleaning method, in the former, sol state is formed under heating to carry out application to stained face and in the later, two liquids are mixed in using and the mixture is applied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent and a cleaning method used for cleaning inclined surfaces, vertical surfaces, ceiling surfaces, etc. of various structures or structures, and more particularly to the cleaning surface as described above. The present invention relates to a cleaning agent capable of stably staying and exhibiting a sufficient cleaning effect, and a cleaning method capable of exhibiting good cleaning workability.

[0002]

2. Description of the Related Art The outer surface of a structure or structure made of a metal material such as iron, aluminum or copper, or plastic or various composite materials has various exposed surfaces such as a horizontal surface, an inclined surface, a vertical surface and a ceiling surface. It is configured. Of these structures or structures, large ones, such as buildings, building accessories, furniture, vehicles, various large machines / equipment, and various other fixed structures (hereinafter simply referred to as large structures) If the exposed surface becomes contaminated, cleaning it becomes a major task. These large structures are submerged in a bath of cleaning solution because of their large size and weight, or because they are fixedly mounted or, in some cases, have complex internal mechanisms. I cannot do the work of cleaning.

[0003]

Therefore, it is necessary to apply a cleaning agent to the contaminated surface to clean it.
Alternatively, depending on the type of detergent component, it is necessary or preferable to allow the used cleaning liquid to remain on the contaminated surface for a desired time. In this case, if the contaminated surface is a horizontal surface, it is sufficiently possible to retain the cleaning liquid on the horizontal surface for a desired time. However, when the contaminated surface is an inclined surface, a vertical surface, a ceiling surface, or the like, there is a problem that the cleaning liquid flows down on these surfaces or drops by forming a ridge. Therefore, the purpose of cleaning is not sufficiently achieved, and it is necessary to repeat cleaning again, or the above-mentioned flow-down or the dropped cleaning liquid enters the internal mechanism of the structure and causes mechanical failure. There is also a problem that they fall on nearby objects (for example, floors and tatami when cleaning window frames and furniture) and stain them.

Therefore, it has been considered to add an adhesive component to the cleaning liquid or to add a thickening agent to enhance the retention property on the vertical surface, but to eliminate the fluidity of the cleaning liquid itself. Since it cannot be done, it is not a fundamental solution.

The present invention has been made by paying attention to the above-mentioned circumstances, and it is easy to carry out coating work such as coating and spraying with fluidity when applied to a contaminated surface. , After being applied to the contaminated surface, it loses fluidity and stays on the contaminated surface for a desired time to exhibit the desired cleaning function, and after cleaning is completed, the cleaning surface can be easily cleaned without any particular difficulty. To provide a new cleaning agent that can be peeled from the surface, or in some cases, can recover the fluidity to the required degree and can be wiped more easily, and an easy and excellent cleaning using such a cleaning agent. The purpose of the present invention is to provide a cleaning method capable of exerting an effect.

[0006]

The novel detergent provided by the present invention includes a one-pack type and a two-pack type, and the one-pack type first contains a detergent component and a gel-forming component. Use as a summary. The gel-forming component may be sol-gel reversible or irreversible depending on temperature, but a reversible type is particularly preferable. Next, the two-pack type is composed of a liquid A containing a detergent component and a gelling agent, and a liquid B containing a gel-forming component which is gelled by the gelling agent, which is mixed and gelled at the time of use. Is something that can be done. At this time, as a combination of the gelling agent and the gel-forming component, the gelling agent is an acidic substance and the gel-forming component gels under acidic conditions, or the gelling agent is an alkaline substance and the gel-forming component is an alkaline condition. The combination of gelling below is recommended as the most preferred.

As a method of cleaning using the above cleaning agent, it is preferable to apply the cleaning agent to the contaminated surface by heating the cleaning agent in a sol state in the former one-liquid type, and in the latter two-liquid type, It is preferable to mix the above liquids A and B at the time of use and apply them to the contaminated surface.

[0008]

The detergent component applicable to the cleaning agent of the present invention is not particularly limited in its type, but the interface should be taken into consideration while considering the condition that the object to be washed itself is not chemically polluted. It can be arbitrarily selected from common detergent components such as an activator, an acid, an alkali, a bleaching agent and a solvent.
As will be understood from the above description, when an acid or an alkali is used as a cleaning agent in the two-pack type, these may also function as a gelling agent.

The most typically used surfactants include anionic surfactants such as soap and various synthetic surfactants. As a synthetic surfactant,
Anionic surfactants such as alkyl sulfate ester salts, alkylbenzenesulfonate salts, α-olefinsulfonate salts, alkylsulfonate salts, aliphatic amidesulfonate salts, dialkylsulfosuccinate salts; alkylpyridinium bromide, alkyltrimethylammonium chloride chloride , Alkyl dimethyl benzyl ammonium chloride and other cationic surfactants; betaine-type amphoteric surfactants, imidazoline-type amphoteric surfactants, alanine-type amphoteric surfactants and other amphoteric surfactants; polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers , Polyoxyethylene fatty acid ester, polyoxyethylene fatty acid amide ether, polyhydric alcohol fatty acid ester, polyoxyethylene polyhydric alcohol fatty acid ester, fatty acid sucrose ester, alkylolamide Nonionic surfactants such as polyoxyalkylene block copolymer is exemplified. The cleaning mechanism using these surfactants exhibits a cleaning action based on various properties such as permeability, wettability, dispersibility, emulsifying property, solubilizing property, and bubble forming property depending on the type of the surfactant. . When using these surfactants, auxiliary agents such as builders, penetration enhancers and optical brighteners can be used if necessary. As the builder, various sodium polyphosphates, zeolites which are not feared to be eutrophication in lakes and the like are used. As the penetration enhancer, ethylene glycol or the like is used.

The acid used as a detergent component may be an organic acid or an inorganic acid, but representative acids include oxalic acid, succinic acid, citric acid, gluconic acid, tartaric acid, malic acid, malonic acid, Examples include fumaric acid and hydrochloric acid, and examples of the alkali include sodium carbonate, sodium hydrogen carbonate, sodium hydroxide and the like. General-purpose bleaching agents and solvents are also used.

As the gel-forming component, in the one-pack type, the sol-gel reversible component, that is, for example, colloidal particles exhibit fluidity in a sol state in a heated state, and the temperature is lowered, particularly to the ambient temperature. Sometimes gels are used, which are reversible (specific examples are agar, starch, gelatin, kudzu powder, etc.), and once gelled, they do not return to sol (irreversible ), It remains as a thin film on the non-washed surface, and after washing, it can be used mechanically, for example, by removing by brushing. The suitable gelling temperature when using the sol-gel reversible component is 50 to 70 ° C. When the temperature is lower than 50 ° C., sufficient gelling occurs when the object is washed at high temperature in summer or under high temperature environment. Can not be achieved, while 70 ℃
When the temperature is higher than the above, it takes time to heat the sol state, and when an excessively high temperature is required, there is a problem in work safety.

When the above-mentioned sol-gel reversible component is used, as a treatment after washing, it is wiped off while heating and returning to a sol state, or water is added or dissolved in running water,
Alternatively, it may be removed from the cleaned surface by scraping it with a mechanical stimulus.

As the gel-forming component in the two-pack type, those which gel with an acid or an alkali are used. Typical examples of the former are sodium alginate and typical examples of the latter are xanthan gum. As the gelling agent when using the former sodium alginate or the like,
An acid that does not adversely affect the surface to be cleaned, for example, an organic acid or an inorganic acid that serves as the above-mentioned detergent component can be used again.
As the gelling agent when the latter xanthan gum or the like is used, an alkali that does not adversely affect the surface to be cleaned, for example, an alkali that serves as the detergent component is again mentioned,
If necessary, it is recommended to use an inorganic calcium compound such as calcium sulfate in combination to assist gelation.

The concentration of the gel-forming component in the present invention varies depending on the type of the component, but in the case of the one-component type, the concentration is equal to or higher than the gelable concentration and the workability of coating or spraying in the sol state can be maintained. From the point of not more than the concentration, it is usually determined from the range of 1 to 100 g / 1 liter (water). In the case of a two-pack type, it is desirable to determine from the viewpoint of the blending ratio with the gelling agent, and it should be determined in consideration of the strength of the acid or alkali used as the gelling agent, but in general, , As a gel-forming component vs. a gelling agent (1
-10): 1 (weight ratio) is recommended.

Regarding the concentration of the detergent component, the optimum concentration range varies depending on the type of the component and the type and degree of contamination to be cleaned, but generally 0.1 N or more is desired. The upper limit need not be specified, but the cleaning effect saturates after about 3 N. Therefore, this may be used as a guide for the upper limit.

The cleaning agent of the present invention has the above-mentioned constitution, and when applied to a contaminated surface, when it is a one-pack type (particularly in the case of a reversible type), it is heated and applied or sprayed in a sol state to contaminate it. If the temperature lowers on the surface and gels, as well as removing the stain while gelling and holding it on the contaminated surface, and finally removing it by any of the above means,
A clean surface can be recovered. On the other hand, in the two-component type, A liquid and B liquid
The liquids are stored in separate containers, and are sprayed from each of the two-necked nozzles to mix and gel them on the contaminated surface, or they are mixed immediately before the nozzles and then sprayed on the contaminated surface. It is recommended to adopt a method of forming a gelled film on the. The cleaning agent of the present invention exerts its maximum effect when applied to the vertical surface, the inclined surface, or the ceiling surface, but the application target is not particularly limited.

[0017]

EXAMPLES Examples 1 to 4 (one-pack type) C _{24 to} C ₃₇ paraffins / activated carbon mixture (weight ratio 1 /
Using the simulated stain source prepared in 3), the aluminum plate (J
It was applied to IS5052) to give a simulated stain. The aluminum plate was measured for the light reflectance before the application of the simulated dirt source, and the cleaning efficiency (%) was determined from the change in the light reflectance before and after cleaning (according to the calculation formula shown in the footnote of Table 1).

A cleaning agent having the composition shown in Table 1 was prepared,
The sol-like cleaning agent heated to 80 ° C. was adhered to the vertical-position normal-temperature aluminum plate to which the above-mentioned simulated stain was applied (Examples 1 to 4). The cleaning agent gelled shortly after coating, and a thin film was formed on the surface of the aluminum plate. This as it is 3
After leaving for 0 minutes, 1 hour or 2 hours, the cleaning agent was removed under running water using absorbent cotton. As a comparative example, a comparative cleaning solution as shown in Table 1 was prepared and applied on an aluminum plate in the same vertical posture as above, and when the cleaning solution dripped, it was re-applied, and applied 10 times in total. . These cleaning effects are shown in Table 1.

[0019]

[Table 1]

As is clear from Table 1, in the case of using the cleaning agent of the present invention, it is understood that the stains formed on the contaminated surface are more and more peeled off as the retention time of the gelled film increases. To be done.

Examples 5 and 6 (in the case of two-pack type) In the same manner as in Examples 1 to 4, an aluminum plate was subjected to simulated soiling to prepare cleaning agents (solutions A and B) having the compositions shown in Table 2. Then, these were sprayed from separate nozzles onto the normal temperature aluminum plate in the vertical posture to which the above-mentioned simulated stain was given. A gelled film was formed within a short time after spraying. 15 as it is
After leaving it for a minute, it was rinsed with water and the reflectance was measured. As a result, the same excellent cleaning effect as in Examples 1 to 4 was obtained.
Also, the same excellent effect was obtained by using a method of mixing immediately before coating without using a spray nozzle.

[0022]

[Table 2]

[0023]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, even if various structures that cannot be washed by being immersed in a bath of a washing liquid are used, the contamination surface can be treated with a very simple method. Since a gelling film of a cleaning agent can be formed on the surface and held for a long period of time, it becomes possible to sufficiently wash and remove stains during the entire holding process.

Claims (7)

[Claims] 1. A detergent comprising a detergent component and a gel-forming component. 2. The cleaning agent according to claim 1, wherein the gel forming component exhibits sol-gel reversibility depending on temperature. 3. A liquid containing a detergent component and a gelling agent,
A cleaning agent comprising a liquid B containing a gel-forming component that gels with the gelling agent, which is mixed and gelled at the time of use. 4. The cleaning agent according to claim 3, wherein the gelling agent is an acidic substance, and the gel-forming component gels under acidic conditions. 5. The cleaning agent according to claim 3, wherein the gelling agent is an alkaline substance and the gel-forming component gels under alkaline conditions. 6. A cleaning method comprising applying the cleaning agent according to claim 2 to a contaminated surface in a sol state by heating. 7. A cleaning method, characterized in that the liquid A and the liquid B according to claim 3 are mixed at the time of use and applied to a contaminated surface.