JP2002327317A - Protector having coloring mechanism for precaution - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a protector or protective clothes such as gloves, shoes, glasses, sanitary gown, etc., with which a part stuck with a stuff such as an acid, an alkali, etc., harmful and dangerous to the human body, a part having a damage or a part having a through hole in the protector can be recognized. SOLUTION: This protector or protective clothes such as gloves, shoes, glasses, sanitary gown, etc., has its surface on which a coloring matter to emit fluorescence or to an acid, an alkali, etc., to change in color is fixed by a resin when the acid or alkali is brought into contact with a material of the protector so as to show the adhesion. In order to exhibit the part of the damage or the pierced hole, a coloring matter to be reacted with a gas or a liquid in an atmosphere used and to emit fluorescence or to change in color is dispersed in the material of the protector. When the damage or the pierced hole is caused, the stuff contained in the material of the protector is reacted with the gas or liquid to emit fluorescence or to change in color, consequently the damage or the pierced hole can be confirmed when they are caused.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique related to the safety of protective equipment used when handling alkalis, acids, dangerous wastes, toxic gases, radioactive substances and the like.

[0002]

2. Description of the Related Art Conventionally, protective equipment and protective clothing have been worn when handling alkalis and acids. However, there has been a problem that even where the acids or alkalis scatter, it is not known where they are attached. In addition to the adhesion, the protective equipment may crack due to fatigue or deterioration, or a hole may be formed in the protective equipment due to metal wire or glass. There was a big problem because there was no sensation such as pain when touching.

[0003] Similarly, toxic organic solvents, toxic gases,
There is also a very serious problem that it is not known that a waste liquid containing lead, mercury or the like has penetrated into the rubber glove even if it penetrates the rubber glove, for example.

Further, rubber gloves and the like are used in completely closed containers such as glove boxes. Dangerous bacteria are often handled by glove hooks, so that no bacteria are leaked to the outside. In addition, there are cases where dangerous gas is handled by controlling the atmosphere in the glove hood with an inert gas, and there is a case where it is necessary to prevent mixing of the outside air atmosphere.

[0005] As described above, when a glove used in a glove box has a penetrating wound, it may affect the life of the glove. There was a problem that was hard to notice.

[0006]

[PROBLEMS TO BE SOLVED] To make it possible to recognize places where dangerous materials such as acids and alka adhere to protective equipment and protective clothing, and places where protective equipment and protective clothing are damaged or penetrated. thing.

[0007]

[Means for solving the problem] The places where dangerous materials such as acid and alkali adhere to protective equipment and protective clothing, the places where scratches are generated due to damage, etc., and the places where they penetrate, are visually recognized by coloring. To do.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As a method for allowing an alkali or an acid to be visually checked for caution when touching clothes, protective equipment, and the like, a dye that develops a color by reacting, a dye that changes color, a phosphor, and the like are used. It is mixed with a thermosetting or ultraviolet-curing resin, coated on the surface of products such as clothes, protective glasses, shoes, gloves, etc., and cured to fix the coloring pigment or phosphor. At this time, the coloring dye or discoloring dye, the fluorescent substance is bonded to the terminal group of the monomer or polymer of the curable resin to improve dispersibility, and the dye and the fluorescent substance are granulated in advance by a spray dryer, etc. Similar effects can be obtained by forming a molecular film having a high affinity with the material to be coated thereon or a particle having a film layer formed thereon and adding this as a color former.

[0009] Even if a curable resin is not used, resin and plastic of the same material as clothes and protective equipment are melted at the melting point or dissolved in an organic solvent and added thereto, and then coated on clothes and protective equipment. The same effect can be obtained. Next, as a method to confirm the location of scratches or penetrating scratches on rubber gloves etc. of glove boxes used for testing clothes, protective equipment, vacuum parts, bio, etc., or tests that require atmosphere control When these components are used to make a product as described above, a multilayer film is formed in the thickness direction, and when the first layer penetrates and the second layer is damaged, the first layer of the additive and the second layer are added. This is a method in which an eye additive reacts to develop color.

At this time, the product is manufactured in advance in a usual manner,
A method of forming a multilayer film by coating the surface of the material, and a method of melting a raw material in a process of manufacturing a product in advance and kneading it as a single additive to a thin plastic film component when molding the material with a mold or a roll press. The same effect can be achieved by rolling and forming a film, then coating another additive on the film and fixing it, or laminating another additive film. can get.

As a method of confirming the difference between a wound and a penetrating wound in a situation where alkali or acid is not involved, a material that emits color or fluorescence when two compounds come into contact with each other, for example, a rubber The surface of a glove or the like is coated and fixed with a material that does not emit color or fluorescence by itself, and an additive that reacts with touching the material coated on the surface is dispersed in the material of the rubber glove. When the glove is damaged, the material of the surface layer reacts with the material in the glove, and only the damaged portion can emit color or emit fluorescence.

Alternatively, materials that generate color or fluorescence when two compounds come into contact are separately encapsulated and dispersed in a rubber glove material, and when a scratch occurs, each encapsulated material touches. It can also come out by emitting color and fluorescence.

In addition, layers each containing a material that generates color or fluorescence when two compounds come into contact with each other are stacked as a multilayer film, and when a flaw occurs, the material in each film leaks. However, similar results can be obtained by emitting color or fluorescence.

As a method of confirming only a penetrating wound, for example, a material that does not independently emit color or fluorescence is fixed to the inside of clothes, protective equipment, and gloves, that is, the person in contact with the skin. This is a method of adding a material that develops a color when it comes into contact with the material of the glove or the material fixed inside the material surface.

In this method, for example, if the content of the work is an alkali or an acid, the color will not develop on the inside of protective equipment, work clothes and gloves alone, but if it is exposed to an acid or an alkali, discoloration or
It is also possible to simply immobilize a material that emits color and fluorescence.

As a method of visualizing the occurrence of a penetrating scratch when handling an organic solvent or the like, for example, a material that emits color or fluorescence when two compounds come into contact with each other is encapsulated and fixed inside the glove. When the organic solvent enters, the capsule material is dissolved, and the two compounds come into contact with each other to emit color or fluorescence.

As a specific material, as a material which changes color when an acid or an alkali adheres, a material having an amino group or a hydroxyl group in a molecular structure can be mentioned. There are phthalein type, sulfophthalein type, azo type, triphenylmethane type, benzene type and nitro type. For example, there are typically methyl orange and phenolphthalein. Other examples include bromophenol blue, bromocresol blue, bromocresol purple, and thymol blue. Eosin and 1-aminonaphthalene-5-
Sulfonamide and the like.

As a method of granulating the two compounds separately and forming a film into a film to form a color or discoloration when a flaw or a through hole is formed, for example, a complex salt can be formed, and disodium ethylenediaminetetraacetate can be used. And a solution of calcium nitrate can produce a blue color. Such materials include murexide, sulfosalicylic acid, and the like.

Rhodamine B, phosphine, and the like that emit fluorescence with an oxidizing agent or a reducing agent include safranin T, indigosulfonic acid, methylene blue, ferroin, neutral red, diphenylamine, and o-phenanthroline iron, which discolor. Complex salts and the like.
Some emit light by thermal decomposition, such as dioxetane,
In some cases, it can be used.

In addition to the above, an organic dye that changes color when oxidized may be used as a material that changes color when exposed to an atmospheric gas, for example, air.

Further, when special bacteria or materials adhere to the surface of the glove, or when the glove enters the wound or the through-hole, the glove can be colored or fluorescent in a similar way. Is natural.

It is also conceivable that, when a toxic gas component penetrates the protective glove, it reacts with the toxic gas to emit color or fluorescence. Further, it can be improved by means of forming a porous material so that gas or water is easily adsorbed on the surface of protective equipment or clothes, and facilitating the emission of color or fluorescent light through the porous material.

[0023]

【Example】

Example 1 A powder of ammonium carbonate was pulverized to 10 μm
After having the following diameter, this powder is mixed with a thermosetting acrylic resin, applied to the surface of a rubber glove with a thickness of 100 μm,
Cured by applying heat. 1m of copper sulfate on the surface of this glove
Although the ol solution was soaked but did not develop color, when the surface of the glove was scratched, ammonia and copper ions formed an ammonia complex of copper, and the scratched portion turned blue.

[0024]

Example 2 A dry powder of copper sulfate was pulverized to a size of about 0.5 μm, mixed with an ultraviolet curable resin, applied to a surface of a rubber glove to a thickness of about 10 μm, and cured by applying ultraviolet light. Was. Further, an ultraviolet curable resin was applied thereon with a thickness of 5 μm and cured with ultraviolet light. The surface of the glove was immersed in a 1N ammonia solution, but did not develop color. However, when the surface of the glove was scratched, ammonia and copper ions formed an ammonia complex of copper, which caused the scratch. However, it turned blue and the wound was confirmed.

[0025]

Embodiment 3 Zn that fluoresces red with a UV lamp
After the S powder was pulverized to a size of about 0.5 μm, this was mixed with a thermosetting acrylic resin at 50 wt%, and applied to the surface of a rubber glove to a thickness of about 100 μm to be cured. When a UV lamp was applied to the surface of the glove, the glove grew slightly red. When the surface of this glove was scratched, it was confirmed that the wound was brightly fluoresced red when irradiated with a UV lamp.

[0026]

Example 4 Calcein powder which emits fluorescence by forming a metal complex was added to a polyurethane resin in an amount of 10 wt.
% Dispersed. The resin was stretched by a hot press and bonded to a glove. Using this glove, it was put into a solution having a concentration of 100 g of calcium nitrate dissolved in 100 mL of water, but nothing changed. When the glove was scratched in the solution, yellow-green luminescence was observed from the wound.

The addition amount of calcein powder is 0 to 80 wt%
As a result of performing a similar test with a flaw, it was difficult to confirm unless at least 0.1 wt% or more was added.

[0028]

Example 5 A phenolphthalein powder whose color changed according to the pH of the solution was added to an aqueous solution in which polyvinyl alcohol was dissolved at 10% by weight and stirred, and the solution was soaked in a white coat. After drying the lab coat, when the lab coat was sprayed with an alkaline solution of sodium hydroxide 1N, the area with the alkali solution turned red and the place with the alkali was found. Similar effects could be confirmed by changing phenolphthalein to phenol red.

[0029]

Example 6 A solution prepared by dissolving 150 g of copper nitrate in 100 mL of water was stirred at high speed together with a surfactant into an oil to prepare a solution.
Disperse to a diameter of less than μm, coagulate at low temperature, filter, mix this powder into UV-curable acrylic resin, apply it to the surface of rubber glove with a thickness of 100 μm, and cure by applying UV light I let it. No color was formed even when the surface of the glove was exposed to ammonia gas. When a hole was formed in this glove, the copper ion formed a copper ammonia complex due to the ammonia gas, and the damaged portion turned blue, and the position of the hole could be confirmed.

[0030]

Example 7 10% by weight of potassium permanganate powder was added to and mixed with ultrafine silica having a specific surface area of 1000 m2 / g or more, and a powder obtained by adding 10% by weight of water to this powder was prepared.
This powder was mixed with an ultraviolet curable acrylic resin in an amount of 10 wt%, and thereafter, 10 wt% of a methylene blue dye was added to the resin and mixed. This resin was applied to the surface of a rubber glove in a thickness of 100 μm, and cured by applying ultraviolet rays. When the glove was scratched with a cutter, the wound of the cutter was confirmed to be blue-green.

[0031]

Example 8 A thermosetting resin mixed with 50 wt% of phenolphthalein powder added and mixed on a rubber glove was cured, and then 5N hydroxide was added to ultrafine silica powder having a specific surface area of 100 m2 / g or more. After impregnated with 10% by weight of sodium aqueous solution, this was added to ultraviolet curable acrylic resin by 10% by weight.
% And mix this resin with a thickness of about 50μm.
The composition was applied to the surface of a thermosetting resin and cured with ultraviolet rays. When the glove was scratched with a cutter, the wound of the cutter turned red and could be confirmed.

[0032]

Embodiment 9 When bonding between rubber gloves and protective clothing closely, phenolphthalein powder was added to the
0 wt% was added, mixed and cured. Even if an alkaline solution of sodium hydroxide solution 1N was adhered to this joint, it was slightly reddish. Was.

[0033]

According to the present invention, a protective device such as shoes, clothes, gloves, glasses, etc., which emits color or fluorescence against the occurrence of scratches or through-holes, etc. for the purpose of vigilance, has been conventionally used for visual and tactile sensation. The presence or absence and position of scratches and through holes that could not be identified can be confirmed.Also, the presence or absence and position of adhesion and through holes even for adhesion of alkali and acid, harmful liquids and gases, and passage from through holes. Can be visualized, allowing safe work.

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Claims (13)

[Claims] 1. A protective device characterized by having a mechanism for emitting color, discoloration or fluorescence to notify a place where it has adhered as a warning indicator when a harmful and dangerous material comes into contact with the human body. 2. A mechanism that emits color, discoloration or fluorescence to notify the place where the hazardous material harmful to the human body comes into contact as a warning sign, which is caused by acidity such as acid or alkali. Method. 3. A mechanism that emits color, discoloration, or fluorescence to notify the place where the hazardous material harmful to the human body comes in contact as a warning sign, which is caused by metal ions contained in the hazardous material. how to. 4. A mechanism for emitting color, discoloring, or fluorescence to notify a place where a harmful material harmful to a human body comes into contact as a warning sign. The discoloration is caused by an organic compound contained in a dangerous substance. Features method. 5. A mechanism that emits color, discoloration or fluorescence to notify a place where it adheres as a warning sign when a harmful material harmful to the human body comes into contact. Features method. 6. A protective device that emits color, discoloration, or fluorescence to alert the user of a damaged area as a warning when the product is damaged. 7. A protective device which emits color, discoloration or fluorescence to indicate only a penetrated portion as a warning display when a penetrating scratch occurs in a product. 8. A protective device characterized in that the degree of coloration or discoloration varies depending on the depth of a flaw generated in the product. 9. The method according to claim 1, wherein the color and fluorescence are formed of one or more kinds of compounds formed on the surface of a product such as a cloth or a film and emit a color or fluorescence. 10. The method according to claim 1, wherein the coloring is at least one compound contained in a product such as a cloth or a film and is made of a material that emits coloring or fluorescence. 11. The method according to claim 1, wherein the color is formed of a material which emits color or fluorescence by a compound contained in a product such as a cloth or a film and a compound formed on the surface of the cloth or the film. [12] The present invention is characterized in that it has a structure in which a color is formed by contact with an acid or an alkali and a color is formed, and an acid or an alkali which forms a color forming material is dispersed and fixed separately. 13. The method according to claim 1, wherein the amount of the coloring material added to the resin is 0.1 wt% or more.