JP2018044138A5 - - Google Patents

Description

Method for producing a paint that causes incombustibility by applying to a combustible substance

When the nonflammable coating according to the present invention is applied to a flammable material and heat-treated, a collection of metal-bonded metal fine particles is laminated to form a multilayer structure to cover the flammable material, and oxygen gas is not supplied to the flammable material . For this reason, even if it heats up more than an ignition point, a combustible substance does not self-ignite and does not ignite. Also, pyrolyzable combustible substances are not discharged to the outside. The present invention relates to a method for producing an incombustible coating material that provides such an effect. In addition, since a combustible substance forms various forms, such as a base material, components, and a product, it is grouped as a combustible substance in this invention.

The Building Standards Law stipulates that the main part of the building must be composed of flame-retardant and non-flammable building materials according to the use and scale of the building. Regarding the nonflammability performance and its technical standards, Article 108-2 states, “When building materials are heated by a normal fire, they meet the requirements listed in the following items for 20 minutes after the start of heating. (1) It must not burn. (2) It shall not cause deformation, melting, cracking or other damage harmful to fire prevention. (3) Smoke or gas harmful to evacuation It shall not be generated ". In addition, this law stipulates materials that have the requirements of 3 items as quasi-incombustible materials for 10 minutes after the start of heating, and those that satisfy the requirements of 3 items as flame retardant materials for 5 minutes after the start of heating. doing. Therefore, the incombustible material is a material that is less flammable than the incombustible material, and the incombustible paint has a higher incombustibility than the incombustible paint.
Based on this background, various incombustible paints have been developed and commercialized. On the other hand, paints used for construction and building materials contain emulsion resins and additives made of organic substances, and therefore burn in the event of a fire. The emulsion resin is obtained by dispersing fine particles made of an acrylic resin or the like in a solvent, and forms a film as a coating film after the solvent evaporates. Therefore, a method of adding a flame retardant to a paint is generally used to incombust a coating film containing a flammable organic substance. The flame retardant is divided into an organic flame retardant and an inorganic flame retardant. Furthermore, organic flame retardants are classified into halogen-based flame retardants such as pentabromodiphenyl ether, phosphorus-based flame retardants such as phosphate esters, and composite flame retardants such as melamine. On the other hand, inorganic flame retardants include metal hydroxide flame retardants such as ammonium hydroxide and magnesium hydroxide, antimony flame retardants such as antimony trioxide and antimony pentoxide, and flame retardants such as red phosphorus. And classified. Such a flame retardant is mixed with an emulsion resin dispersed in water, and an additive comprising a plasticizer and an anti-precipitation agent and a pigment for coloring are added, and finally diluted with water. Used as paint. Therefore, even when an inorganic flame retardant is used, an emulsion resin made of an organic material and a plasticizer are used. Among these flame retardants, the halogen-based flame retardant has the greatest non-flammability effect and is the cheapest flame retardant. However, the environmental impact of substances generated by the thermal decomposition of halogenated flame retardants cannot be ignored.

Various flame retardants having a material structure different from that of conventional flame retardants have been developed. For example, Patent Document 1 proposes a flame-retardant paint mainly composed of bentonite produced with high purity and a soap-free emulsion resin. However, since the molecular structure of bentonite becomes unstable at 400 ° C. or higher, there is a problem that the gas barrier property of bentonite is lowered under a high temperature environment of 400 ° C. or higher. Moreover, the manufacturing cost which refine | purifies bentonite as a fine powder whose content of montmorillonite is 85 weight% or more is not cheap. In addition, the emulsion resin does not burn in the above-mentioned Building Standards Act, that is, does not burn for 20 minutes after the start of heating, but burns if heated for a longer time. Bentonite is an inorganic substance made of a kind of clay mineral, and conventionally used as an anti-precipitation agent for paints.
Patent Document 2 discloses inorganic and organic hybrid incombustibles composed mainly of white cement mixed with an inorganic aggregate and an incombustible agent to form a powder, and this powder is mixed with a liquid agent composed of an aqueous emulsion resin. Paint has been proposed. However, in order to increase the incombustibility of a paint having such a composition, the blending ratio of white cement, inorganic aggregate, and incombustible material must be increased in the paint. However, the higher the inorganic flame retardant, the more complicated the handling and the poorer the workability of forming a coating film. Moreover, the adhesiveness with the bottom is inferior, and the coating film physical property is deteriorated with time. Moreover, even if the water-based emulsion resin has the nonflammability of the building standard method described above, that is, the property that it does not burn for 20 minutes after the start of heating, it burns if it is further heated.
The acrylic resin used in the emulsion resin begins to thermally decompose at around 370 ° C. in the atmosphere, and has a boiling point of 101 ° C. and an ignition point of 421 ° C., and a boiling point of 80 ° C. and an ignition point. It is decomposed into methyl acrylate at 468 ° C. and these related compounds. Further, dibutyl phthalate, which is a typical plasticizer, has a boiling point of 340 ° C. and an ignition point of 402 ° C. Therefore, the combustible material to which the incombustible paint having the emulsion resin and the plasticizer as components is applied, the coating film is thermally decomposed at a temperature lower than 400 ° C., the incombustibility is lost, and the combustible material is ignited.

Japanese Patent Laid-Open No. 2006-117810 Japanese Patent Laid-Open No. 2001-043891

The nonflammability prescribed in the Building Standards Act is a rule that satisfies the requirements of the three items only for the first 20 minutes at the time of the occurrence of a fire. To be precise, it is a rule of slow flame retardance rather than nonflammability. However, not all people can evacuate from buildings that are burning within 20 minutes of the fire. In addition, when the incombustible paint burns after 20 minutes from the occurrence of the fire, the combustible material to which the incombustible paint is applied ignites, causing the fire to spread, and generating smoke or gas harmful to evacuation. Therefore, if the incombustible paint can be changed to incombustibility that does not ignite the combustible material and does not ignite, the incombustibility of the combustible material will be continued in any fire, and the effect on disaster prevention is great.
Here, the nonflammable paint in the present invention is defined. First, even if various flammable materials are exposed to high temperatures and thermally decomposed, if the coating formed by the incombustible paint does not discharge all the materials generated by the thermal decomposition to the outside, it will be thermally decomposed. Reliable black smoke and harmful gases are not discharged, black smoke blocks the view, and harmful gases do not cause disasters. In addition, combustible substances generated by pyrolysis are self-ignited to create a starting point of fire, and are not ignited to spread the fire. Second, if the film formed of non-combustible paint does not supply oxygen gas to various flammable substances, it will not oxidize with oxygen gas even if the flammable substance is heated to a temperature above its ignition point. There is no combustion, and combustible materials do not ignite and do not ignite. Therefore, as long as the combustible material can be covered with a coating having heat resistance and airtightness close to metal, the combustible material does not ignite and does not ignite even if it is exposed to a fire of any scale for a long time. In addition, the thermally decomposed combustible material is not discharged to the outside. Therefore, a paint in which a combustible material is coated with a film having heat resistance and airtightness close to metal is defined as a non-combustible paint in the present invention.
At present, all buildings use many combustible substances, that is, products mainly composed of organic substances such as resin, wood and paper. For this reason, the effect which a combustible substance is coat | covered with the film which has the heat resistance close | similar to a metal, and airtightness is very large. However, there are currently no paints that provide these effects.
By the way, there are various paints. When classifying paints in general according to the purpose of use, firstly, there are paints intended to protect the surface of a substance. Examples of surface protection include anticorrosion, antiseptic, antifungal, antproof, antifouling, waterproofing, chemical resistance, fire resistance and heat resistance. Second, there are paints aimed at improving the aesthetics of the surface of a substance. Examples of aesthetics include smoothing the surface, imparting gloss, coloring, patterns, designs, and landscape creation. Thirdly, there are paints intended to impart functionality. Functionality includes heat shielding, water repellency, anti-condensation, fluorescence, phosphorescence, light reflection, sound / vibration prevention, camouflage, adsorption of harmful chemicals, electrical insulation, anti-slip, and the like.
The paints are also classified according to the main components that form the coating film. They are classified into oil-based paints mainly composed of dry oil such as varnish, lacquers mainly composed of nitrocellulose, resin paints mainly composed of various resins, and alcoholic paints composed mainly of ceramics. Furthermore, these classifications are subdivided according to the type of material used.
The objects to which such paint is applied include buildings, building materials, metal bases, and parts without products such as products, ships, automobiles, furniture, woodwork, plastic products, etc., and the shapes, sizes and materials are different.
Therefore, the formed coating film changes depending on the purpose of use, the environment of use, and the object. For this reason, the incombustible paint in the present invention has heat resistance and airtightness close to metal for all combustible materials regardless of the coating film already formed and regardless of the presence or absence of the coating film. Must be covered with a coating. In other words, whatever the state of the surface of the combustible substance, whatever material, shape and size, it must be possible to form a coating film with a noncombustible paint.
As described above, the problem related to the present invention is that the surface of all flammable substances has heat resistance close to that of metal regardless of the material, size, shape, and surface state of the flammable substances. An object of the present invention is to realize a non-combustible paint that can be covered with a film having airtightness.

Method of manufacturing a non-flammable paint bring incombustible to the combustible material by applying to the surface of the combustible material in the present invention, a metal compound to deposit metal by pyrolysis and dispersed in an alcohol, the metal compound Is prepared in a molecular state and is dispersed in alcohol. The first property has a melting point lower than 20 ° C., the second property which dissolves or mixes in the alcohol, and the viscosity is 20 times or more than that of the alcohol. Organic that has five properties: a high third property, a fourth property whose boiling point is 50 ° C. or more higher than the thermal decomposition temperature of the metal compound, and a fifth property whose ignition point is 50 ° C. or more higher than the boiling point. compounds were mixed in the alcohol dispersion, the organic compound is dissolved or mixed in the alcohol, a mixture organic compound mixed with the alcohol dispersion and uniformity To formed, thereby, non-flammable coating made from the mixture bring incombustible to the combustible material by applying the mixture on the surface of the combustible material is produced, is a method for producing a non-flammable paint .

That is, according to this production method, when a metal compound that deposits a metal by thermal decomposition is first dispersed in alcohol, the metal compound is converted into a molecular state and dispersed in the alcohol. As a result, the metal raw material is converted into a liquid phase. Next, when the organic compound is mixed with the alcohol dispersion, the organic compound dissolves or mixes with the alcohol, so the organic compound is uniformly mixed with the alcohol dispersion of the metal compound, and is composed of a liquid that causes incombustibility to the combustible substance. Incombustible paints are produced. The viscosity of the incombustible paint changes according to the viscosity of the organic compound and the mixing ratio of the organic compound, and the thickness of the coating film obtained by applying the incombustible paint to the combustible substance is determined by the viscosity of the incombustible paint. Therefore, adjust the viscosity of the non-combustible paint according to the material, shape, size, and surface condition of the combustible material, and apply brush coating, roller coating, spray coating, roll coater, dip coating, etc. By selecting this method, it is possible to form a coating film made of a non-combustible paint on all combustible substances.

The method of covering the surface of the flammable substance with an airtight coating that causes the flammable substance to be nonflammable using the nonflammable paint manufactured by the above-described manufacturing method is a flammable non-flammable paint manufactured by the above-described manufacturing method . It is applied to the surface of the substance, the temperature of the combustible substance is raised, the alcohol constituting the incombustible paint is vaporized , and a collection of fine crystals of the metal compound constituting the incombustible paint constitutes the incombustible paint. deposited simultaneously in an organic compound which, microcrystals sink to the lower layer of the metal compound, the organic compound to move to the upper layer of the fine crystals of the metal compounds, thereafter, fine crystals of the metal compound is thermally decomposed In addition, a collection of granular metal fine particles is deposited on the surface of the combustible substance, and the metal fine particles enter the irregularities on the surface of the combustible substance, and the adjacent metal fine particles are metal-bonded to each other. Collection of the metal fine particles are laminated to form a multilayer structure, the surface of the combustible material, with covered with a film made of the multilayer structure, boiling point than the thermal decomposition temperature is higher the organic compound of the metal compound, wherein covered with a film comprising the surface of the multilayer structure film from the organic compound, wherein the combustible material is, the comprising a coating of a multilayer structure and the organic compound are covered with two types of air-tightness of the coating film, and the In this method, the surface of the combustible material is covered with an airtight coating that causes the combustible material to be incombustible using the incombustible paint produced by the production method .

That is, when the temperature of the combustible material to which the above-described noncombustible coating is applied is raised, alcohol is first vaporized from the noncombustible coating. Thus, the metal compound is dispersed in an alcohol, for not dispersed in an organic compound, a collection of fine crystals of the metal compound is deposited simultaneously in the organic compound. At this time, the fine crystal of the metal compound sinks to the lower layer, and the liquid organic compound moves to the upper layer of the fine crystal of the metal compound. The fine crystal of the metal compound corresponds to the size of the metal fine particles precipitated by thermal decomposition. When the temperature is further increased, thermal decomposition of the metal compound occurs on the surface of the combustible substance. The metal compound first decomposes into a metal and an organic substance, and further, the organic substance evaporates while taking heat of vaporization, and the minute bubbles of the organic substance evaporate through the organic compound layer, and at the moment when the vaporization of the organic substance is completed, A collection of granular metal fine particles having a size of 40-60 nm enters the irregularities on the surface of the combustible substance, and accumulates on one another and precipitates on the surface. At this time, since the metal fine particles are precipitated in an active state having no impurities, adjacent metal fine particles are metal-bonded to each other, and a group of metal metal-bonded layers is laminated to form a multilayer structure. This multilayer structure is combustible. Cover the surface of the active substance as a film. On the other hand, a liquid organic compound having a melting point lower than 20 ° C. has a boiling point that is 50 ° C. or higher than the thermal decomposition temperature of the metal compound, and therefore remains even if the metal compound is thermally decomposed, and more than 20 times the viscosity of the alcohol. Because of its viscosity, the surface of the multilayer structure composed of a collection of metal fine particles is covered with a film. As a result, the flammable substance is covered with a double film of a multi-layered film composed of a collection of metal fine particles and a film composed of a liquid organic compound. On the other hand, in the multilayer structure of metal fine particles, a plurality of layers are stacked to form a multilayer structure of metal fine particles, so that adjacent metal fine particles in the same layer are metal-bonded and metal fine particles adjacent to each other between the upper and lower layers are also metal. In order to bond, the multilayer structure which consists of a collection of metal fine particles has airtightness. Further, since the liquid organic compound forms a film, the organic compound covers the multi-layered film of metal fine particles with airtightness. As a result, the combustible material is covered with two types of airtight coatings.
By the way, the following five functions and effects are brought about by the fact that the organic compound constituting the incombustible paint has the following five properties. First, the liquid organic compound is dissolved or mixed in the alcohol, and secondly, since the organic compound has a certain viscosity, a nonflammable paint consisting of a mixture of a metal compound alcohol dispersion and the organic compound is flammable. It can be applied as a paint on the surface of the active substance, and a coating film is formed. Third, since the organic compound does not disperse in the metal compound, when alcohol is vaporized from the incombustible paint, a collection of fine crystals of the metal compound precipitates in the organic compound, the fine crystals sink to the lower layer, and the liquid organic compound Move up. Thereby, thermal decomposition of the metal compound occurs on the surface of the combustible substance. Fourth, since the boiling point of the organic compound is higher by 50 ° C. or more than the thermal decomposition temperature of the metal compound, the thermal decomposition reaction of the metal compound takes place on the surface of the combustible substance, inside the coating of the organic compound, and Thermal decomposition proceeds while being blocked from the outside, and a multilayer structure composed of a collection of metal fine particles is reliably formed on the surface of the combustible substance. Fifth, when a combustible material covered with two kinds of airtight coatings is heated to the boiling point of the organic compound by a fire, the ignition point of the organic compound is 50 ° C. higher than the boiling point. Vaporization proceeds and organic compounds do not ignite. In addition, the thickness of the coating after the alcohol is vaporized is about 1 micron, and the ratio of the thickness to the area of the coating is very small. Since it is more diluted, the organic compound gas does not ignite.
On the other hand, combustible substances are heated by a fire. If the surface of the combustible material exceeds the thermal decomposition temperature of the metal compound, the metal fine particles have a large specific surface area, which is the surface area per unit volume. Incorporated, metal fine particles grow and become slightly coarse. In the coarsened metal fine particles, adjacent metal fine particles are metal-bonded, and a group of metal particles that are metal-bonded forms a multilayer structure, and still covers the combustible substance. When the surface of the combustible material reaches the boiling point of the organic compound, the organic compound is vaporized, and the second film covering the combustible material evaporates. At this time, since the combustible material is covered with a multilayer structure of metal fine particles, the combustible material is still cut off from the outside. In addition, since the ignition point of the organic compound is 50 ° C. or more higher than the boiling point, the organic compound does not ignite in advance because of vaporization. When the temperature is further increased, the coarsening of the metal fine particles further proceeds. Note that the number of metal fine particles decreases as the metal fine particles become coarser. When the melting point of the metal is approached, the boundary as metal particles disappears, and the film is changed to a film made of a metal bulk material. For this reason, the multilayer structure of metal fine particles has heat resistance close to the melting point of the metal and continues to cover the combustible material with an airtight coating, and the combustible material does not self-ignite and does not ignite. In addition, the combustible material is thermally decomposed in a state where no air is supplied, and the material after the thermal decomposition is covered with an airtight coating made up of a collection of metal fine particles and is not discharged to the outside. As a result, the flammable substance does not ignite and does not ignite even if it is exposed to a fire of any scale for a long time. Moreover, the combustible substance produced | generated by thermal decomposition is not discharged | emitted outside. As the temperature of the metal fine particles increases, the metal fine particles become coarser and the number of metal fine particles decreases. Therefore, when the number of layers of the laminated metal fine particles is small, voids, that is, spaces where no metal fine particles exist are generated in the laminated metal fine particles. Therefore, in consideration of the maximum temperature at which the combustible substance is heated, it is necessary to increase the thickness of the multilayered layer of metal fine particles in advance.
In addition, since the combustible material in which the coating film is formed is heated in the event of a fire, various phenomena starting from the thermal decomposition of the metal compound described above occur in the coating film, and thus it is not necessary to heat-treat in advance. That is, only alcohol is vaporized from the coating film, and thereafter, the combustible substance can be used as a normal combustible substance. That is, after the alcohol is vaporized, the thickness of the coating is about 1 micron, and the coating does not fall off due to entering the irregularities on the surface of the flammable substance. Cannot be detected. Moreover, the organic compound has an extremely low vapor pressure in the air atmosphere and does not evaporate. For this reason, the combustible material in which the coating film was formed can be installed in a building using a normal combustible material, or can be used as daily necessities.
As described above, the flammable material to which the nonflammable paint is applied is covered with a film having heat resistance and airtightness close to metal, and the problems in the present invention described in the fifth paragraph have been solved. .

Method of manufacturing an above mentioned non-flammable paint, with octyl acid metal compound as a metal compound mentioned above, methanol is used as the above-mentioned alcohol, an organic compound described above, an organic compound belonging to the aromatic carboxylic acid esters A manufacturing method for manufacturing the above-described non-flammable paint, which manufactures the non-flammable coating according to the above-described manufacturing method for manufacturing a non-flammable coating .

That is, the metal octylate is thermally decomposed at 290 ° C. to deposit a metal. Moreover, it disperse | distributes to methanol near 10weight%. Therefore, the metal octylate compound becomes a raw material for depositing metal by thermal decomposition. The fine crystals of the metal octylate precipitated in the organic compound are thermally decomposed on the surface of the flammable material in a sealed area where the atmosphere is shut off, but at the boiling point of octylic acid as in the atmosphere. Thermal decomposition begins, and metal is deposited at 290 ° C. to complete thermal decomposition.
That is, the metal ion is the largest among the ions constituting the metal octylate compound. Therefore, in the octylic acid metal compound in which the oxygen ion constituting the carboxyl group of octyl acid is covalently bonded to the metal ion, the distance between the oxygen ion constituting the carboxyl group and the metal ion is longer than the distance between other ions. When heat-treating the octylate metal compound having such a molecular structure, when the boiling point of octylate is exceeded, the bond between the oxygen ion and the metal ion constituting the carboxyl group is first divided and separated into octylate and metal. Furthermore, octylic acid takes the heat of vaporization and vaporizes, and when vaporization is completed, metal is deposited. As such organometallic compounds, there are carboxylic acid metal compounds such as lauric acid metal compounds and stearic acid metal compounds in addition to octylic acid metal compounds. However, at atmospheric pressure, octyl acid has a boiling point of 228 ° C., lauric acid has a boiling point of 296 ° C., and stearic acid has a boiling point of 361 ° C. Therefore, a metal octylate having the lowest boiling point and the lowest thermal decomposition temperature is most desirable.
Furthermore, octylic acid metal compounds are inexpensive industrial chemicals that can be easily synthesized. That is, when octylic acid is reacted with a strong alkali, an alkali metal octylate is produced. Thereafter, when the alkali metal octylate compound is reacted with an inorganic metal compound, metal octylate compounds composed of various metals are synthesized. Therefore, it is the cheapest organometallic compound among the organometallic compounds.
When a combustible material made of a synthetic resin is covered with two kinds of airtight coatings by thermal decomposition of an octylate metal compound, the combustible material contains a collection of fine crystals of the octylate metal compound and an organic compound. The temperature is raised to 290 ° C. in a state where it is covered with. At this time, since the combustible substance is heated to 290 ° C. in a sealed region with the atmosphere blocked, thermal decomposition of the synthetic resin does not occur. In addition, even if a coating film is formed on the surface of the combustible material in advance, the coating film does not ignite or the coating film does not thermally decompose. Therefore, the surface of the combustible material made of the synthetic resin can be covered with the two kinds of airtight coatings without irreversibly changing the properties of the synthetic resin.
Moreover, the ignition point in the atmospheric air of wood is 400-460 degreeC, and is higher than the thermal decomposition temperature of an octylic acid metal compound. Furthermore, even if a coating film is formed in advance on the surface of the combustible material made of wood, the temperature is raised to 290 ° C. while being covered with a collection of fine crystals of the octylate metal compound and the organic compound, The coating film does not ignite and the coating film does not thermally decompose.
Furthermore, the ignition point of newspaper in the atmospheric atmosphere is 290 ° C., and the ignition point of imitation paper is 450 ° C. The flammable material made of paper does not ignite because it is heated to 290 ° C. while being covered with a collection of fine crystals of the metal octylate compound and the organic compound. Moreover, even if a coating film is previously formed on the surface of the combustible substance, the coating film does not ignite and the coating film does not thermally decompose.
Meanwhile, the organic compounds belonging to the aromatic carboxylic acid esters, the melting point is lower than 20 ° C., dissolved or mixed in methanol, having a viscosity of 20 times or more of methanol, a boiling point of 340 ° C. or higher, the ignition point 390 There are organic compounds having these five properties that are at or above ° C. Such organic compounds are general-purpose industrial chemicals.
Therefore, when such an organic compound is mixed with a methanol dispersion of an octylate metal compound, the organic compound dissolves or mixes in the methanol, so that the organic compound is uniformly mixed with the methanol dispersion of the octylate metal compound and is nonflammable. Forming a paint. When this incombustible paint is applied to a flammable substance and vaporizes methanol, the metal octylate compound is dispersed in methanol but not in the organic compound, so a collection of fine crystals of metal octylate is precipitated in the organic compound. To do. Furthermore, when the metal octylate compound is thermally decomposed at an elevated temperature, a collection of metal fine particles having a size of 40-60 nm corresponding to the size of the fine crystals is deposited, and a flammable structure having a multi-layer structure of metal fine particles is obtained. The surface of the sex substance is covered. On the other hand, the organic compound having a boiling point of 340 ° C. or more becomes a second film covering the surface of the film having a multilayer structure of metal fine particles, and covers the combustible substance. For this reason, an organic compound becomes a raw material of a nonflammable coating material.
As explained above, the octylic acid metal compound, the organic compound belonging to the aromatic carboxylic acid ester , and methanol are used as raw materials for producing the incombustible paint, and the inexpensive incombustible paint is produced. It is a raw material.

It is sectional drawing which demonstrated typically the state which the fine particle of chromium piled up on the surface of the melamine decorative board, and was metal-bonded, and also the surface of the organic compound coat | covered the surface. It is sectional drawing which demonstrated typically the state by which the melamine decorative board after thermal decomposition was covered with the coarse particle of chromium.

Embodiment 1
As an embodiment of a metal compound that deposits a metal by heat treatment, it will be described that an octylic acid metal compound is suitable. The metal compound is firstly dispersed in methanol, and secondly, when the metal compound applied to the combustible material is heated, the metal compound is thermally decomposed on the surface of the combustible material to deposit two metal fine particles. Combines nature. Here, it will be explained that a chromium octylate compound is appropriate as a substance having chromium and a metal having two properties.
First, the methanol dispersibility of an inorganic chromium compound having a low molecular weight will be described. Chromic oxide _Cr 2 _{O 3,} chromium chloride CrCl _3, inorganic chromium compound, such as chromium nitrate Cr _{(NO 3)} 3 was dissolved in methanol, for chromium ions ^{Cr 3+} is eluted into methanol and vaporize methanol In addition, fine crystals of the inorganic chromium compound do not precipitate, and the inorganic chromium compound cannot participate in the precipitation of the chromium fine particles. In addition, inorganic chromium compounds such as chromium sulfate Cr (SO ₄ ) ₃ , chromium acetate Cr (CH ₃ COO) ₃ , and chromium phosphate CrPO ₄ are not dispersed in methanol. Therefore, such an inorganic chromium compound having a small molecular weight is not suitable as a chromium compound because it is not dispersed in methanol.
Here, the organic chromium compound will be described. Among chemical reactions in which chromium is generated from an organic chromium compound, the simplest chemical reaction is a thermal decomposition reaction. That is, chromium is deposited by thermal decomposition simply by raising the temperature of the organic chromium compound. Furthermore, if the pyrolysis temperature of the organic chromium compound is low, a combustible material made of synthetic resin having a low pyrolysis temperature or paper having a low ignition point can be changed to a property that does not ignite and does not ignite. Furthermore, if the synthesis of the organic chromium compound is easy, it becomes an inexpensive raw material for the incombustible paint. Among the organic chromium compounds that have these properties, there are chromium carboxylate compounds in which the oxygen ions constituting the carboxyl group of the carboxylic acid are covalently bonded to the chromium ions, and the octylate metal compound is the most hot metal carboxylic acid metal compound. The decomposition temperature is low.
That is, the largest ion among the ions constituting the carboxylic acid chromium compound is a chromium ion. Therefore, if the oxygen ion constituting the carboxyl group of the carboxylic acid is covalently bonded to the chromium ion, the distance between the chromium ion and the oxygen ion constituting the carboxyl group is the longest among the distances between the ions. When the temperature of such a carboxylic acid chromium compound is raised in the atmosphere, when the boiling point of the carboxylic acid is exceeded, it is decomposed into carboxylic acid and chromium. When the temperature is further increased, if the carboxylic acid is composed of a saturated fatty acid, the carboxylic acid is vaporized with heat of vaporization, and chromium is precipitated after the carboxylic acid is vaporized. Further, if the carboxylic acid is an unsaturated fatty acid, the carbon atoms are excessive with respect to the hydrogen atoms, and therefore, when the carboxylic acid chromium compound composed of the unsaturated fatty acid is thermally decomposed, chromium oxide is deposited.
On the other hand, among the chromium carboxylate compounds, the oxygen ion composing the carboxyl group of the carboxylic acid acts as a ligand, and the chromium carboxylate compound that coordinates to the chromium ion is the distance between the chromium ion and the oxygen ion. On the other hand, the distance between the oxygen ion and the ion bonded to the chromium ion on the opposite side is the longest. In the thermal decomposition reaction of the carboxylic acid chromium compound having such a molecular structure, the bond portion between the oxygen ion and the ion bonded on the opposite side of the chromium ion is first divided, and as a result, chromium oxide is deposited.
Further, the chromium carboxylate compound is an organic chromium compound that is easy to synthesize and cheapest because carboxylic acid is the most versatile organic acid. That is, when a carboxylic acid is reacted in a strong alkali solution such as sodium hydroxide, a carboxylic acid alkali metal compound is produced. When this alkali metal carboxylate compound is reacted with an inorganic chromium compound such as chromium sulfate, a chromium carboxylate compound is produced. For this reason, it is the cheapest organic chromium compound among the organic chromium compounds.
That is, among the substances constituting the chromium carboxylate compound, the chromium ion Cr ³⁺ located at the center of the composition formula is the largest. Therefore, when the chromium ion Cr ³⁺ and the oxygen ion O ⁻ constituting the carboxyl group are covalently bonded, the distance between the chromium ion Cr ³⁺ and the oxygen ion O ⁻ is maximized. This is because the covalent bond radius in the triple bond of chromium atom is 103 pm, the covalent bond radius in the double bond of oxygen atom is 57 pm, and the covalent bond radius in the double bond of carbon atom is 67 pm. . When the carboxylic acid chromium compound having such a molecular structure exceeds the boiling point of the carboxylic acid, the bond portion between the chromium ion having the longest bond distance and the oxygen ion constituting the carboxyl group is first divided, and the chromium and carboxylic acid are separated. And to separate. When the temperature is further increased, the carboxylic acid is vaporized with heat of vaporization, and chromium is deposited after vaporization of the carboxylic acid is completed.
Further, when the hydrocarbon constituting the saturated fatty acid has a long chain structure, the longer the long chain, that is, the larger the molecular weight of the saturated fatty acid, the higher the boiling point of the saturated fatty acid and the higher the thermal decomposition temperature. Incidentally, the boiling point at atmospheric pressure of lauric acid having a molecular weight of 200.3 is 296 ° C., and the boiling point of stearic acid having a molecular weight of 284.5 at 361 ° C. is 361 ° C.
On the other hand, a saturated fatty acid having a branched chain structure has a shorter chain length and a lower boiling point than a saturated fatty acid having a straight chain structure. Furthermore, since saturated fatty acids having a branched chain structure have polarity, chromium carboxylate compounds composed of saturated fatty acids having a branched chain structure also have polarity, and are dispersed at a relatively high rate in polar organic solvents such as alcohol. . Octyl acid is a saturated fatty acid having such a branched structure. Octyl acid is represented by the structural formula CH ₃ (CH ₂ ) ₃ CH (C ₂ H ₅ ) COOH, branched to an alkane of CH ₃ (CH ₂ ) ₃ and C ₂ H ₅ with CH, and carboxyl group to CH COOH binds. For this reason, the boiling point of octylic acid at atmospheric pressure is 228 ° C., which is 68 ° C. lower than that of lauric acid. Therefore, chromium octylate Cr (C ₇ H ₁₅ COO) ₃ is desirable as a raw material for depositing chromium. Chromium octylate is thermally decomposed at 290 ° C. to deposit chromium.
Similarly, copper octylate Cu (C ₇ H ₁₅ COO) ₂ as a raw material of copper, aluminum octylate Al (C ₇ H ₁₅ COO) ₃ as a raw material of aluminum, and iron octylate Fe (C ₇ ) as a raw material of iron H ₁₅ COO) ₃ is preferably nickel octylate Ni (C ₇ H ₁₅ COO) ₂ as a nickel raw material. Thus, an octylic acid metal compound is comprised with various metals, and turns into a metal compound which comprises a nonflammable coating material.
Here, using octylate copper as octyl acid metal compound, a thermal decomposition reaction in both the air atmosphere and a nitrogen atmosphere, illustrating the TG-DTA characteristic temperature was raised at a heating rate of 5 ° C. / min. The TG characteristic is a result of continuously measuring the weight change of copper octylate accompanying a temperature rise, and the DTA characteristic is a temperature difference between the reference substance and a thermal change generated in copper octylate with a temperature rise. Is the result of differential thermal analysis detected as In both the air and nitrogen atmospheres, after the gradual weight loss due to the removal of moisture is finished, when the boiling point of octyl acid exceeds 228 ° C, a clear weight loss appears, and the weight rapidly decreases with increasing temperature. Pyrolysis proceeds. That is, in the air atmosphere, the calorific value increased rapidly at 278.8 ° C., the peak of the calorific value appeared at 280.7 ° C., the exothermic phenomenon ended at 285.4 ° C., and the weight decreased by 78.5%. On the other hand, in the nitrogen atmosphere, the calorific value increased rapidly at 285.3 ° C., the peak of the calorific value appeared at 289.0 ° C., the exothermic phenomenon ended at 291.3 ° C., and the weight decreased by 77.4%. Therefore, the thermal decomposition of copper octylate has no problem in considering that the thermal decomposition starts at the boiling point of octylic acid and ends at 290 ° C. and precipitates copper in both the air atmosphere and the nitrogen atmosphere. Moreover, since the theoretical weight reduction | decrease of the copper octylate which copper precipitates by thermal decomposition of copper octylate is 81.8 weight%, it is safe to think that copper precipitated by thermal decomposition. Further, chromium octylate, aluminum octylate, iron octylate, and nickel octylate also cause the same thermal decomposition reaction as copper octylate, and deposit metal.
Therefore, the metal octylate compound is a flammable material surface that is blocked from the outside by a liquid organic compound, and the thermal decomposition of fine crystals of the metal octylate compound starts at 228 ° C. and ends at 290 ° C. A collection of metal fine particles is deposited all at once on the surface of the combustible substance. For this reason, an octylic acid metal compound becomes a raw material of a nonflammable coating material.

Embodiment 2
First, the melting point is lower than 20 ° C, secondly, it is dissolved or mixed in methanol, third, it has a viscosity of 20 times or more of that of methanol, fourth is boiling point above 340 ° C, and fifth is ignition This is an embodiment relating to an organic compound having these five properties, the point being 390 ° C. or higher. As an organic compound having both of these five characteristics, there are organic compounds belonging to the aromatic carboxylic acid esters. Methanol has a viscosity of 0.59 mPa seconds at 20 ° C.
Dibutyl phthalate C ₆ H ₄ (COO (CH ₂ ) ₃ CH ₃ ) ₂ has a melting point of −35 ° C., dissolves in methanol, has a boiling point of 340 ° C., an ignition point of 402 ° C., and a viscosity of 38 ° C. It is 9.7 mPa seconds. Di (2-ethylhexyl) phthalate C ₆ H ₄ (COOC ₈ H ₁₇ ) ₂ has a melting point of −50 ° C., is miscible with methanol, has a boiling point of 386 ° C., an ignition point of 400 ° C., and a viscosity of 20 ° C. 81 mPa seconds. These aromatic carboxylic acid esters are general-purpose industrial chemicals used as plasticizers in plastic resins and polymers, lacquers, adhesives, paints, industrial inks and the like.

Embodiment 3
An embodiment in which a combustible material made of various types of synthetic resin is covered with two kinds of airtight coatings will be described from the thermal decomposition of the synthetic resin. In other words, when the thermal decomposition of the polymer constituting the synthetic resin begins when the fine crystals of the metal octylate are thermally decomposed, the molecular structure of the polymer is irreversibly changed, and the combustible material made of the synthetic resin is altered. The merchantability of combustible substances is impaired.
The combustible material made of a synthetic resin is heated to 290 ° C. while being covered with a mixture of fine crystals of metal octylate and an organic compound. At this time, the combustible substance is heated up to 290 ° C. in a sealed region where the atmosphere is blocked.
By the way, the thermal decomposition reaction of the polymer constituting the synthetic resin is greatly different between an atmosphere in which oxygen gas exists and a nitrogen atmosphere. That is, the thermal decomposition of the polymer in the atmosphere in which oxygen gas is present is accompanied by heat generation because it is thermal decomposition due to an oxidation reaction. This exothermic phenomenon promotes thermal decomposition of a polymer made of an organic substance that is easily oxidized, and a combustible gas generated during the thermal decomposition self-ignites. On the other hand, in the thermal decomposition in a nitrogen atmosphere, no oxidation reaction occurs, thermal decomposition due to endothermic reaction occurs, and no exothermic phenomenon occurs. For this reason, the temperature at which the polymer starts thermal decomposition shifts to the high temperature side with a significant delay compared to the atmosphere in which oxygen gas exists. For example, the thermal decomposition of the polymer constituting the high-density polyethylene resin starts near 250 ° C. in the air atmosphere, but starts near 400 ° C. in the nitrogen atmosphere, and shifts to 150 ° C. on the high temperature side.
The thermal decomposition of other polymers in a nitrogen atmosphere starts at 280 ° C. and ends at 420 ° C. for the polyacetal resin POM. The polystyrene resin PS starts thermal decomposition at 350 ° C. and ends at around 460 ° C. Polyethylene terephthalate resin PET starts thermal decomposition at 425 ° C. and ends at around 480 ° C. The polypropylene resin PP begins to decompose at 370 ° C. and ends at around 500 ° C. The high-density polyethylene resin HDPE starts thermal decomposition at 400 ° C. and ends at around 520 ° C. The polytetrafluoroethylene resin PTFE starts thermal decomposition at 490 ° C. and ends at around 640 ° C.
Polyvinyl chloride resin PVC in a helium gas atmosphere starts from around 220 ° C. with an endothermic reaction, and the flammable and harmful hydrogen chloride gas and the flammable gases benzene and naphthalene start off at around 260 ° C. And continue to 360 ° C. Thereafter, thermal decomposition of the polymer with endotherm starts from around 420 ° C., and the combustible gases toluene and xylene are removed and the reaction is terminated at around 550 ° C., leaving a solid residue (ash content) of 10%. Furthermore, the novolak type phenolic resin in the high temperature fluid in which the atmosphere is shut off begins to desorb the flammable plasticizer from around 260 ° C. and continues to around 360 ° C., and thereafter, from 390 ° C. Pyrolysis begins, combustible gases such as phenol and cresol are generated, and the process ends at around 700 ° C., leaving a solid residue (ash content) of 65%.
On the other hand, the combustible material of the synthetic resin in the present invention is heated to 290 ° C. in a sealed region where the atmosphere is shut off. For this reason, thermal decomposition of polymers is completely different from thermal decomposition with nitrogen gas, inert gas, or high-temperature fluid. That is, in the case of nitrogen gas, inert gas, or high-temperature fluid, the gas generated by the thermal decomposition is sequentially released into the atmosphere or the high-temperature fluid, so that the thermal decomposition in which the gas is generated proceeds as the temperature rises. On the other hand, since the synthetic resin in the present invention is shielded from the atmosphere and heated in a sealed region, the first gas generated by pyrolysis is confined in a very narrow region, and the partial pressure of the gas in the narrow region is Increases to a saturation pressure at that temperature, and thermal decomposition stops. Therefore, in order to proceed with the thermal decomposition, it is necessary to give the polymer a higher thermal energy than the thermal decomposition in an open atmosphere. For this reason, when a very small amount of gas is generated, the partial pressure of the gas in the narrow region becomes the saturation pressure at that temperature, and the amount of gas generated is extremely small compared to the open atmosphere. Moreover, since the first gas is confined in the second and subsequent gases generated by the thermal decomposition, the thermal decomposition does not proceed unless larger thermal energy is supplied. As a result, the synthetic resin in the sealed area where the atmosphere is shut off is thermally decomposed at a temperature significantly higher than the thermal decomposition temperature in the above-described atmosphere, and is thermally decomposed at a temperature higher than the thermal decomposition temperature of the octylate metal compound. . Therefore, even if the fine crystals of the metal octylate are thermally decomposed, the polymer is not thermally decomposed and the properties of the synthetic resin are not changed.

Example 1
Produces non-combustible paint using chromium octylate (imported product), dibutyl phthalate (product of Showa Ether Co., Ltd.) and methanol (first grade reagent) as raw materials. First, 144.5 g (corresponding to 0.3 mol) of chromium octylate was dispersed in methanol at 10% by weight. This dispersion was mixed with 5% by weight of dibutyl phthalate to produce a non-combustible paint.

Example 2
A melamine decorative board having a thickness of 0.95 mm (product XJN2085KV04 from Aika Kogyo Co., Ltd.) was cut out in a size of 5 cm × 5 cm, immersed in the nonflammable paint produced in Example 1, and the sample was pulled up to vaporize methanol. It was. Thereafter, the temperature was raised to 290 ° C., left for 1 minute, and then cooled. This sample is designated as Sample 1.
Melamine decorative board is a type of surface material used for furniture, furniture, fittings, etc. where strength is required, and impregnated paper that has been impregnated with melamine resin and phenolic resin is impregnated into printing paper and kraft paper, respectively. Lamination is performed by applying a pressure of 100 kg / cm ² at 150 ° C. The melamine resin decomposes into low molecular weight carbides at 230-320 ° C. in the atmospheric air, thermal decomposition of the carbonized residue proceeds slowly at 320-475 ° C., and the carbonized residue burns at 475-570 ° C. Therefore, melamine resin burns with thermal decomposition as well as phenol resin.
Sample 1 was cut and the cut surface was observed with an electron microscope. As the electron microscope, an extremely low acceleration voltage SEM owned by JFE Techno-Research Corporation was used. This apparatus can observe the surface with an extremely low acceleration voltage from 100 V, and can directly observe the surface without forming a conductive film.
First, with respect to the reflected electron beam from the cross section of the sample 1, a secondary electron beam between 900-1000 V was taken out and image processing was performed. Inside the dibutyl phthalate layer, granular fine particles having a size of 40-60 nm were stacked and bonded with a thickness of about 9 layers.
Next, with respect to the reflected electron beam from the cross section of the sample 1, energy between 900-1000 V was extracted and image processing was performed, and the material of the particles was analyzed based on the density of the image. No granular fine particles were observed, and it was found that the fine particles were composed of a single atom.
Further, the energy and intensity of the characteristic X- ray from the cross section of the sample 1 were image-processed, and the types of elements constituting the particles were analyzed. Since the particulate fine particles consisted of only chromium atoms, the sample 1 was coated with a granular layer of chromium having a thickness of about 9 layers to cover the melamine decorative board, and a coating of 1 μm thick dibutyl phthalate thereon. I found that it formed and covered. FIG. 1 schematically shows a cross section of the sample 1. The fine chrome particles 2 were stacked and bonded to the surface of the melamine decorative board 1 with a thickness of about 9 layers, and a coating of dibutyl phthalate 3 covered the surface.

Example 3
Sample 1 prepared in Example 2 was left in an air atmosphere at 840 ° C. for 5 minutes. At this time, no flame, black smoke, or off-flavor was generated from Sample 1. Sample 1 after this heat treatment was taken out as sample 2, a part of sample 2 was cut out, and the surface and the cut surface were observed with an electron microscope. The surface of the sample 2 is green Gakari surface was composed of chromic Cr ₂ O ₃ oxide. Further, the melamine decorative board in Sample 2 is decomposed into a blackish liquid substance and solid ash, and the chromium fine particles covering the melamine decorative board are coarsened to near 200 nm, and the coarsened particles have a thickness of three layers. The melamine decorative board after thermal decomposition was covered. FIG. 2 schematically shows a part of the cross section of the sample 2. The state in which the surface of the melamine decorative board 4 after pyrolysis is covered with coarse chromium particles 5 is shown.

Example 4
Cut out a natural wood veneer veneer with a thickness of 2.5 mm (Tamo-chome product of Matsumoto Plywood Co., Ltd.) in a size of 5 cm × 5 cm, immerse it in the non-combustible paint produced in Example 1, pull up the sample and methanol Vaporized. Thereafter, the sample was heated to 290 ° C., allowed to stand for 1 minute, and then cooled. This sample is designated as Sample 3. Natural wood veneer veneer is used for building materials such as flooring and joinery, and furniture surface veneer, and a plurality of veneer veneer sliced thinly with a thickness of 0.2-0.6mm is pasted on plywood. Combine and dry the adhesive at a temperature above 100 ° C. Wood is ignited at a temperature of 400 to 460 ° C. in an air atmosphere.
Sample 3 was cut, and the cut surface was observed with an electron microscope in the same manner as Sample 1. Sample 3 is the same as Sample 1, but the surface of natural wood veneer veneer plywood is bonded by stacking granular fine particles of chromium with a thickness of about 9 layers, and the surface is coated with 1 μm thick dibutyl phthalate. Covered with.

Example 5
Sample 3 prepared in Example 4 was left in an air atmosphere at 840 ° C. for 5 minutes. At this time, no flame, black smoke, or off-flavor was generated from Sample 3. Sample 3 after the heat treatment was taken out as sample 4, a part of sample 4 was cut out, and the surface and the cut surface were observed with an electron microscope. The surface of the sample 4, green Gakari as Sample 2, the surface was composed of chromic Cr ₂ O ₃ oxide. In addition, the natural wood veneer decorative plywood in Sample 4 is decomposed into a blackish liquid substance and solid ash, and the chromium fine particles covering the natural wood veneer decorative veneer are coarsened to near 200 nm, resulting in 3 coarse particles. The thickness of the layer covered the natural wood veneer decorative plywood after pyrolysis.

Example 6
In this example, a polyester decorative plywood was used. Polyester decorative plywood is inferior in friction resistance and water resistance to melamine decorative board, but is cheaper and therefore used in furniture and fittings. A decorative paper and plywood are bonded together, a polyester resin is applied, a film is applied, the resin is stretched by a roll and cured. A polyester decorative board (product high board RB-5112G manufactured by Aika Kogyo Co., Ltd.) was cut out in a size of 5 cm × 5 cm, dipped in the incombustible paint produced in Example 1, and the sample was pulled up to vaporize methanol. Thereafter, the sample was heated to 290 ° C., allowed to stand for 1 minute, and then cooled. This is designated as Sample 5. The polyester resin begins to thermally decompose at a temperature exceeding 400 ° C. in the atmospheric air and burns when flammable gas is generated.
Sample 5 was cut, and the cut surface was observed with an electron microscope in the same manner as Sample 1. In the sample 5, the surface of the polyester decorative plywood was bonded by stacking the fine particles of chromium with a thickness of about 9 layers, and the surface was covered with a film having a thickness of 1 μm of dibutyl phthalate. .

Example 7
Sample 5 prepared in Example 6 was left in an air atmosphere at 840 ° C. for 5 minutes. At this time, no flame, black smoke, or odor was generated from Sample 5. Sample 5 after the heat treatment was taken out as sample 6, a part of sample 6 was cut out, and the surface and the cut surface were observed with an electron microscope. Surface of the sample 6, green Gakari as Sample 2, the surface was composed of chromic Cr ₂ O ₃ oxide. Further, the polyester decorative plywood in Sample 6 is decomposed into a blackish liquid substance and solid ash, and the chromium fine particles covering the polyester decorative plywood are coarsened to near 200 nm, and the coarsened particles have a thickness of three layers. It covered natural wood veneer plywood after pyrolysis.

The decorative board described above did not ignite even when the temperature was raised to 840 ° C., and the thermally decomposed decorative board was retained inside the coating of chromium particles and was not released to the outside. Therefore, the decorative board was covered with a film having at least 840 ° C. heat resistance and airtightness. The strictest rule among the fire resistance rules is the insulation performance of the fireproof layer of the fireproof wire. This provision is stipulated for the wiring of various emergency facilities defined by the Fire Service Act and the Building Standards Act, in order to ensure the insulation performance of the refractory layer for a certain period of time in order to ensure an emergency power supply in the event of a fire. This regulation stipulates that the insulation performance can withstand heating by a fire temperature curve that reaches 840 ° C. in 30 minutes. Based on this strictest rule, the decorative board was heated to 840 ° C. In other words, since 840 ° C. is the highest among the fire resistance regulations assuming a fire, the decorative board was burned at 840 ° C. in the air atmosphere. Note that the melting point of chromium is as high as 1907 ° C.
The embodiments described above are only some examples. That is, the octylate metal compound is not limited to chromium, and the octylate metal compound composed of various metal ions can be used to cover the surface of the combustible material with a multilayer structure composed of a collection of various metal fine particles.
The combustible material is not limited to the decorative board shown in the examples. That is, the incombustible paint is composed of a liquid, and the viscosity can be freely changed according to the viscosity of the organic compound and the mixing ratio of the organic compound. For this reason, the viscosity is adjusted according to the material, shape and size of the combustible substance, and the surface condition, and further, the application method such as brush coating, roller coating, spray coating, roll coater, dip coating, etc. If selected, a coating can be formed on all combustible materials. Moreover, the thickness of the coating film applied to the combustible substance is determined by the viscosity of the noncombustible paint. Furthermore, the thickness of the layer in the multilayer structure of the metal fine particles covering the combustible substance can be freely changed according to the concentration of the metal octylate compound in the incombustible paint. The higher the temperature at which the combustible substance is exposed, the thicker the layer of the multilayer structure of metal fine particles, the more the metal fine particles become coarse, the multi-layer structure is formed by the metal bonds of the coarse metal particles. The airtightness of the multilayer structure at the time is maintained. Accordingly, the incombustible paint does not ignite and does not ignite the combustible substance up to a temperature close to the melting point of the metal regardless of the material, shape, size, and surface state of the combustible substance. In addition, pyrolytic substances of combustible substances are not discharged to the outside. It is a non-flammable paint that can impart such breakthrough properties to all flammable substances.

1 Melamine decorative board 2 Fine particles of chromium 3 Dibutyl phthalate
4 Pyrolysis melamine decorative board 5 Coarse particles of chromium

Claims (3)

A manufacturing method for producing a non-combustible coating material that imparts non-combustibility to a combustible material by applying it to the combustible material is a method in which a metal compound that precipitates a metal by thermal decomposition is dispersed in alcohol , and the metal compound becomes a molecular state. A first dispersion having a melting point lower than 20 ° C., a second property that dissolves or mixes in the alcohol, and a viscosity that is 20 times higher than the viscosity of the alcohol. An organic compound having the following five properties: a fourth property whose boiling point is 50 ° C. or more higher than the thermal decomposition temperature of the metal compound, and a fifth property whose ignition point is 50 ° C. or more higher than the boiling point, the mixed alcohol dispersion, the organic compound is dissolved or mixed in the alcohol, to create a mixture organic compound mixed with the alcohol dispersion and uniformity, which Therefore, the incombustible coating comprising a mixed solution Ru is manufactured, the manufacturing method of the non-flammable paint bring incombustible to the combustible material by applying the mixture to a combustible material. The method of covering the surface of the combustible material with an airtight coating that causes the combustible material to be incombustible using the incombustible paint manufactured by the manufacturing method according to claim 1 is the manufacturing method according to claim 1. applying a non-flammable coating produced on the surface of the combustible material, the temperature is raised the combustible material, first the alcohol constituting the incombustible coating is vaporized, fine crystals of the metal compound constituting the incombustible coating A collection of the same in the organic compound constituting the incombustible paint, the fine crystal of the metal compound sinks to the lower layer, the organic compound moves to the upper layer of the fine crystal of the metal compound , the fine crystals thermal decomposition of metal compounds, a collection of granular metal particles are deposited on the surface of the combustible material, with the metal particles from entering the unevenness of the surface of the combustible material, the metal particles adjacent to each other Are mutual The metal-bonded metal fine particles are stacked to form a multilayer structure, and the surface of the combustible material is covered with the multilayer film, and the thermal decomposition temperature of the metal compound. high boiling point of the organic compound is covered with a film comprising the surface of the film of the multilayer structure from the organic compound, wherein the combustible material comprises a film of a multilayer structure composed of a collection of the fine metal particles, and a coating of said organic compound two Ru covered with air-tightness of the coating, the surface of the combustible material in airtightness of the film resulting in non-flammable combustible materials using non-flammable paint was prepared by the method described in claim 1 consisting of How to cover. The manufacturing method for producing the nonflammable coating material according to claim 1 uses an octylic acid metal compound as the metal compound according to claim 1, and methanol as the alcohol according to claim 1. as the organic compound, an organic compound belonging to the aromatic carboxylic acid esters, to produce a non-flammable coating according to the production method for producing a non-flammable coating according to claim 1, producing a non-flammable paint according to claim 1 How to do .