JPH06220489A - Remover - Google Patents

Abstract

PURPOSE:To obtain a powerful and widely applicable remover having a removing function as a conventional organic solvent and a conventional detergent and being excellent in especially a peeling function. CONSTITUTION:This remover contains a water-insoluble or hardly water-soluble organic compound which can dissolve or swell the matter adhering to the surface of an adherend and water as the principal components and may further contain a surfactant as an optional component.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to deposits on metal plates, various metal parts, glass plates, various plastics, concrete, paper, etc., for example, various resins such as toner, inks, and various oil agents. The present invention relates to a remover having an excellent action of removing such as.

[0002]

2. Description of the Related Art Conventionally, metal plates, various metal parts, glass plates, various plastics, concrete, paper, etc.
When removing various resins, mineral oils, processing oils, etc. (hereinafter referred to as "adhered substances") adhering to the "adhered substance"), organic solvents or water-soluble cleaning agents are used. It was

[0003]

For example, when removing an oil agent or a resin adhering to a metal plate, a metal part, various kinds of plastics, paper, etc., if an appropriate organic solvent is selected, the solvent is dissolved by the solvent so that the same resin can be removed. Can be removed to some extent, but complete removal is difficult, and there is a problem that it is not effective against other types of oil agents and resins.

On the other hand, the cleaning action of the water-soluble cleaning agent cannot remove the resins except a part of the cleaning agent.
There was a drawback that the application range was narrow. As described above, the conventional organic solvents and water-soluble detergents have limited types of deposits that can be removed with the same agent, and the removal performance of deposits is unsatisfactory.

[0005]

Means for Solving the Problems The present inventor can remove deposits that are difficult to remove with conventional organic solvents and detergents, and is effective for various deposits of different types. The present invention has been completed as a result of earnest studies to find a multipurpose removing agent that acts on. That is,
The removing agent according to the present invention is capable of dissolving or swelling deposits, and an organic compound (organic solvent) insoluble or poorly soluble in water,
It contains water as the main component.

It is preferable that the organic compound is contained in an amount of 1 to 90% by weight with respect to water, and α + 10 / (100
-Β) -10 to (100-β) / β + 10 (where α is the solubility limit (% by weight) of the organic compound in water at room temperature, β is the solubility of water in the organic compound at room temperature) (Representing the respective sex limits (wt%)) are particularly preferred.

In the above-mentioned constitution of the present invention, the organic compound is not particularly limited as long as it can dissolve or swell the deposit and is insoluble or sparingly soluble in water, but it is not limited thereto. Organic ester compound, organic hydrocarbon compound, fatty acid compound , Organic ketone compounds, halogenated hydrocarbon compounds, aldehyde compounds,
At least one compound selected from the group consisting of ether compounds, heterocyclic compounds, alcohol compounds, organic nitrogen compounds and their derivatives can be mentioned. Also, these organic compounds do not have to be liquids. For example, if it is a solid, it may be dissolved in another organic solvent and mixed with water.

As the organic ester compound, for example,
Ethyl acetate, ethyl oleate, ethyl acrylate, methyl methacrylate, dibutyl succinate, diethyl phthalate, dibutyl phthalate, diethyl tartrate, butyl palmitate, dioctyl phthalate, α-amino acid ethyl,
Aliphatic ester compounds such as L-ethyl glutarate and derivatives thereof, aromatic ester compounds such as methyl benzoate and triphenyl phosphate and derivatives thereof, cyclic ester compounds and derivatives thereof, and heteroesters such as methyl isonicotinate Cyclic ester compounds and their derivatives, coal oxides (such as montan wax oxides).

As the organic hydrocarbon compound, for example,
Examples include white kerosene, liquid paraffin, heptane, benzene, toluene, and cyclohexane. As the halogenated hydrocarbon compound, 1,1,1-trichloroethane,
Examples include α-chlornaphthalene. Examples of alcohol compounds include methanol, ethanol, n-octyl alcohol, n-decyl alcohol, diethylene glycol, glycerin, polyethylene glycol, methyl cellosolve, tert-amyl alcohol, phenol, benzyl alcohol, and methylbenzyl alcohol.

The fatty acid compounds include acetic acid, benzoic acid,
Examples thereof include alkenyl succinic acid, naphthenic acid, oleic acid, isononanoic acid and the like. Examples of the ketone compound include acetone, methyl ethyl ketone, and methyl isobutyl ketone. Examples of the aldehyde compound include acetaldehyde and benzaldehyde.

Examples of ether compounds include ethyl ether, diisopropyl ether, octylphenyl ether and the like. As the organic nitrogen compound, N, N
-Dimethylformamide, diethylamine, aniline,
Examples thereof include dicyclohexylamine. Examples of the heterocyclic compound include N-methyl-2-pyrrolidone.

The type of water is not particularly limited and may be pure water, distilled water, tap water or river water. Furthermore, in the present invention, a surfactant may be added in addition to the organic compound and water. Specific examples of the surfactant include higher fatty acid metal salts (sodium laurate, sodium oleate, etc.), sodium alkylbenzene sulfonate, higher alcohol sulfate ester salts (lauryl sulfate ester sodium salt, cetyl sulfate ester sodium salt, stearyl sulfate). Anionic surfactants such as ester sodium salts; quaternary ammonium salt type or amine salt type cationic surfactants: higher alcohols (lauryl alcohol, cetyl alcohol, coconut oil reducing alcohol, oleyl alcohol, etc.), alkyls (octyl, nonyl) , Dodecyl, etc.), fatty acid (stearic acid, oleic acid, etc.), etc. alkylene oxide (ethylene oxide, propylene oxide, etc.) addition type or polyhydric alcohol ester (sorbitan, sugar An ester, etc.) type nonionic surface active agents.

The content of the surfactant is usually preferably 1 part by weight or more per 100 parts by weight of the total of the organic compound and water. Even when these surfactants are not used,
Although the removing action of the present invention can be exerted, in this case, it is necessary to shake, stir and the like at the time of use to thoroughly mix the organic compound and water in advance. The method for producing the removing agent of the present invention may be carried out by mixing a predetermined amount of the organic compound and water with a surfactant as necessary, and the order thereof is not limited.

In the present invention, the term "removal" means to remove an adhered substance from an adherend by a part of each action such as dissolution, peeling, washing, dispersion or a combination thereof. The deposits that can be removed by the remover of the present invention include, for example, alkyd resins deposited on various adherends such as iron, stainless steel, non-ferrous metal, glass, plastic, cloth, tiles, concrete walls, wood boards, rubber, and paper. (Short oil alkyd, medium oil alkyd, long oil alkyd, phenol modified alkyd, vinyl modified alkyd, etc.) and various resins such as acrylic resin, acrylic styrene resin, amino resin, polyvinyl chloride resin, polyvinyl acetate resin, polyester resin ( Adhesives and adhesives made of these resins are included), and various oils (petroleum grease, silicon grease, metal working oils such as rust preventive oil, cutting oil, press oil, quenching oil, rolling oil, wax, etc.) , Various inks such as oil-based magic, color printing, ballpoint pen, copy toner,
Various paints such as paint, paint, lacquer, and pencils are included. It can also remove stains such as lipsticks, various sauces (Worcester, ketchup, mayonnaise, etc.), coffee, cocoa, etc. that have adhered to clothes, and chewing gum that has adhered to floors and the like. Needless to say, when the adherend is plastic, it is necessary to appropriately select an organic compound that does not attack the adherend itself by the removing agent of the present invention.

The removing agent of the present invention may be supplemented with cellosolves such as diethylene glycol, triethylene glycol, polyethylene glycol, monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, and so-called coupling agents. good. When such an auxiliary agent is used in combination, the dispersibility of the remover constituent components is improved, the removal performance can be improved, and the amount of the surfactant used can be suppressed.

The method for removing deposits using the removing agent of the present invention is carried out by immersing the adherend to which the deposits to be removed are attached in the removing agent of the present invention, or by applying a necessary amount of the deposit on the deposit. Contact the adherent with the remover by a method such as dropping a remover, and after a few seconds to several tens of minutes, wipe the adherend with a cloth or paper,
You can clean the adherend surface by scraping off the resin and other materials with a knife. Then, if necessary, this operation may be repeated several times. If necessary, an ultrasonic cleaner can be used to further improve the removal effect.

[0017]

The reason why the removing agent of the present invention has an excellent removing action is not clear. However, a unique phenomenon is observed when removing the deposit using the removing agent of the present invention. For example, if a black oil-based magic marker (for example, made by Zebra) is applied on a stainless plate or a glass plate for several cm, and 0.5 to 1 cc of the removing agent of the present invention is dropped after drying, the magic marker is instantaneously or within 10 seconds. Disappears (it is colorless at first glance, but when observed in detail, black fine particles are dispersed throughout the removing agent). On the other hand, organic solvents such as 1,1,1
-When using trichloroethane or the like, it is possible to dissolve the magic ink, but a black color emerges (ie the solvent is colored black). In addition, the cleaning action with household detergents such as Mama Royal (made by Lion oil and fat) and Family Fresh (made by Kao) and industrial strong alkaline cleaners does not cause any change in the oily black magic ink on the board and must be removed. I can't.

It is desirable to use a surfactant together with the removing agent of the present invention. When an organic compound and water are mixed, they are usually separated depending on the kind of the organic compound and the mixing ratio of water. Therefore, in order to make the removing action of this remover more reliable, it is preferable to use various surfactants in combination. That is, even if an organic solvent is used, the oil-based magic ink can be dissolved and removed to some extent, but because the solvent is colored black,
The removal of the same ink from the plate surface is incomplete. However, in the case of the present invention, the removing agent is colorless at first glance, so that the adhered substances such as the ink can be more completely removed from the plate surface than the solvent. In the present invention, a phenomenon in which the black color at first glance becomes colorless when the removing agent of the present invention is applied to black oil-based magic ink may be referred to as a peculiar phenomenon.

Although the principle of this peculiar phenomenon is not clear, the removing agent of the present invention has an organic compound dispersed in water. Therefore, it is considered that when the removing agent of the present invention is added to the above-mentioned deposit such as ink, the organic compound first dissolves and peels the deposit such as ink, and at the same time, immediately disperses it in water. Specifically, the dissolution of the ink solvent by the organic compound,
It may be that the ink pigment is peeled from the plate surface, and the solvent and the pigment are dispersed in water.

Of course, the removing agent of the present invention also exhibits a good removing action against various kinds of deposits such as various resins and wax other than the above ink. For example, when removing the adhesive attached to a metal plate, even if the optimum organic solvent (for example, one that can dissolve the resin) is selected, it is not possible to completely remove it at once, Must be used. However, when this remover is used, it can be removed almost once or twice.

In this case, in the case of an organic solvent which cannot dissolve the resin, the resin cannot remove the resin at all. However, it is possible to cleanly remove the adhered matter from the adherend immediately after treatment with the present removing agent or by wiping with a cloth or tissue paper after the treatment. It is considered that the organic compound in the removing agent of the present invention dissolves and / or swells the deposit and penetrates the boundary between the adherend and the deposit, that is, the adhering surface to separate the deposit. Therefore, even if the organic compound cannot dissolve the deposit, the deposit can be removed by peeling.

When a surfactant is used in combination with the scavenger of the present invention composed of an organic compound and water, the organic compound becomes finer particles in water to be dispersed and stabilized. Further, probably because the dispersing action becomes stronger, the peculiar phenomenon of dissolving and dispersing the oil-based magic ink or the like and the action of removing various adhered substances are further enhanced. The reason why the peculiar phenomenon becomes stronger can be presumed to be that the surfactant shields metal ions on the surface of the adherend, particularly when a metal adherend is used.

As described above, in the removing agent of the present invention, the organic compound dissolves / penetrates as an organic solvent with respect to the deposit.
In addition to having a swelling action and the like, water also has the same action as an organic compound with respect to a water-soluble component, and also has a dispersing and peeling action due to the synergistic effect of mixing with an organic compound, and can exert a strong removing action. It can be guessed that it came to be.
Furthermore, if a surfactant is used in combination, the removing action becomes stronger.

[0024]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. (Examples 1 to 22) Organic compounds in the compounding amounts shown in Table 1,
Water and the necessary surfactant were mixed to obtain the remover of the present invention. Then, the following test examples 1 to 5 were carried out for the removing agent of the example, and the results are shown in Table 1.

(Comparative Examples 1 to 10) For comparison, the organic solvents or conventional cleaning agents shown in Table 2 were used in Examples 1 to 2.
The following Test Examples 1 to 5 were carried out in the same manner as in 2, and the results are shown in Table
It is also shown. Test Example 1 A test piece (10 cm × 8 cm) of a stainless steel plate was coated with black oil-based magic [manufactured by Zebra Corporation] ink, and after drying,
About 0.5 cc of the removing agent obtained in the example was dropped on the magic ink with a pipette, and the removing performance of the oily magic ink was visually observed. The removal performance was judged by whether or not black color remains after lightly wiping the plate surface with a fingertip or a tissue paper.

In Test Example 1, each mark in Table 1 or Table 2 means the following result. ⊚: Has good removability. ◯: Has ordinary removability. Δ: There is some removability. X: There is no removability at all.

Test Example 2 A clip was coated with mineral oil (machine oil) and oil-based magic ink (manufactured by Zebra Corp.) and placed in a constant temperature bath for 100
Heat at 30 ° C. for 30 minutes. After cooling, the clip was immersed in the remover of the invention for 5 minutes. Then 1 clip in the remover
After shaking for a minute, the product was taken out, wiped lightly with a cloth, dried, and then pressed against a commercially available double-sided adhesive tape, and the peeling performance of the removing agent was examined by visual observation from the mineral oil and the oil-based marker attached to the double-sided tape.

In Test Example 2, each mark in Table 1 or Table 2 means the following result. ⊚: Has good peelability. ◯: Has normal peelability. Δ: There is some peelability. X: There is no peelability at all.

Test Example 3 A glass test piece (10 cm × 8 cm) was coated with an oil-based black magic marker (manufactured by Zebra Co., Ltd.) and dried, and then a few drops of the remover of the present invention were dropped on the magic marker. Whether or not the black color disappeared for a moment, that is, whether or not the peculiar phenomenon referred to in the present invention occurred was examined by visual observation.

In Test Example 3, each mark in Table 1 or Table 2 means the following result. ⊚: Has a good unique phenomenon. ◯: Has a normal peculiar phenomenon. Δ: There is a slight peculiar phenomenon. X: There is no peculiar phenomenon.

Test Example 4 A remover of the present invention was placed in a beaker, and a copy paper copied with a dry copying machine (manufactured by Ricoh Co., Ltd.) was dipped in the remover for 1 minute and then taken out, and the surface of the copy paper was covered with a cloth. The peeled state of the toner on the copy paper after rubbing was visually observed. In Test Example 4, each mark in Table 1 or Table 2 means the following results.

⊚: The toner on the copied paper is completely removed. ○: 〃 well removed. △: 〃 Removed a little. ×: 〃 is not removed at all As is clear from Table 1 and Table 2, in the case of the copied paper dipped in the removing agent of the present invention, the copying toner is removed cleanly by rubbing the surface thereof. However, when the copied paper is immersed in an organic solvent, the copy toner dissolves in the solvent,
Even if the surface of the copy paper is rubbed, a considerable amount of black toner remains on the paper.

Test Example 5 A test piece (10 cm × 8 cm) of a stainless plate was dipped in a 70% xylol solution of a quick-drying type alkyd resin, taken out, and allowed to stand at room temperature for 24 hours to dry. The thickness of the alkyd resin layer deposited on the test piece is about 5
It was 0 to 100 μm. Next, 0.5 cc of the remover of the present invention was dropped on the alkyd resin with a pipette, and after 5 minutes, the test piece was wiped off with a cloth, and whether the resin could be peeled off or not was determined by visual observation.

In Test Example 5, each mark in Table 1 or Table 2 means the following result. ⊚: Has good peelability. ◯: Has normal peelability. Δ: There is some peelability. X: There is no peelability at all.

[0035]

[Table 1] (Note) In Table 1, the blending amounts of the organic compound, water and the surfactant are parts by weight based on 100 parts by weight of the total of the organic compound and water. In addition, the symbols (1) to (5) in the column of the surfactants indicate the types of the main surfactants to be mixed, and the types thereof are as follows.

Ether type nonionic surfactant, fatty acid ester sulfate (anionic type) surfactant, ethylene oxide-propylene oxide polymerization type nonionic surfactant, sulfosuccinate type nonionic surfactant

[0037]

[Table 2] (Note) In Table 2, the blending amount of the organic compound and water is parts by weight based on 100 parts by weight of the total of the organic compound and water. The symbol 1 in the column of surfactant indicates that the main surfactant compounded is an ether type nonionic surfactant. The following were used as household detergents A to C. (1) Household detergent A: "Mama Royal" manufactured by Lion Oil and Fats Co., Ltd. (2) Household detergent B: "Family Fresh" manufactured by Kao Corporation (3) Household detergent C: "Ariel" manufactured by P & G Co., Ltd. As described above, as is clear from the results of Table 1 and Table 2, no conventional organic solvent or detergent satisfies all of Test Examples 1 to 5, but the remover of the present invention is good in all tests. I'm getting results. As described above, the removing agent of the present invention has a good removability for many kinds of deposits and can be used for various purposes.

(Examples 23 to 75) Surfactants were added to a mixture of an organic compound and water in the proportions shown in Tables 3 to 5 to obtain a removing agent, and the dispersion state of the obtained removing agent is shown in Table 3. It is shown together with ~ 5. In addition, in Tables 3-5, the ratio of an organic compound and water is a weight part, and the addition amount of a surfactant is weight% with respect to an organic compound. Further, the surfactant A is
Alkyl sulfate soda salt, surfactant B represents polyoxyethylene nonyl phenyl ether, ◎,
◯ and △ represent the following evaluations, respectively.

◎ A stable dispersed state can be obtained for a long time (48 hours or more). ○ A stable dispersed state can be obtained for 1 day (up to about 24 hours). △ It tends to separate within 1 day.

[0040]

[Table 3]

[0041]

[Table 4]

[0042]

[Table 5] From Tables 3 to 5, it can be seen that the organic compound and water show a good dispersion state by adding the surfactant.

[0043]

The removing agent of the present invention has an effective action of removing deposits which are difficult or impossible to remove with conventional organic solvents and detergents. Further, it has a good removing effect on various kinds of deposits, has a wide range of application, and can be used for various purposes. By appropriately changing the organic compound constituting the removing agent of the present invention, construction, civil engineering, transportation,
It can be used for removing the above-mentioned deposits related to foods, printing, office machines, electric appliances, semiconductor products, medical devices, copying machines, etc., and is extremely useful.

Further, by appropriately adding a surfactant, the organic compound and water can be kept in a good dispersed state, and a better removal effect can be expected.

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Claims (3)

[Claims] 1. A remover containing, as main components, an organic compound capable of dissolving or swelling an adhered substance adhering to the surface of an adherend and insoluble or hardly soluble in water, and water. 2. The remover according to claim 1, wherein the organic compound is contained in an amount of 1 to 90% by weight based on water. 3. The removing agent according to claim 1, which also contains a surfactant.