FR3045065A1 - BI-COMPONENT ANTI-ASBESTOS PAINT. - Google Patents

Abstract

Two-component anti-asbestos paint characterized in that it comprises in percentage by volume relative to its total volume: - Between 73 and 77% of an A formulation, - Between 23 and 27% of a B formulation.

Description

The present invention is in the field of the treatment of asbestos media.

Asbestos fibers are minerals known for their insulating properties, they do not burn, resist chemical attack and have high tensile strength. All these properties have spread the industrial use of asbestos in building materials and substrates. For example, asbestos has been used for thermal insulation of pipes, for thermal insulation, or incorporated in cement products, in various binders such as glues, paints, even electrical conduits, or in composites like fiber cement (pipes, plates), fibro-polymers, resin, glues, paints, roads, etc. To date, the use of asbestos is prohibited because all varieties of asbestos fibers have been considered since 1996 by the INSERM (National Institute of Health and Medical Research) as carcinogens and dangerous for public health.

Therefore, one of the major current concerns is to find an ecological solution, economical and fast to avoid the spread of asbestos present on the surface of these industrial asbestos.

The object of the present invention is to find a simple and effective alternative solution for treating asbestos-containing substrates and thus to prevent the spread of asbestos, a volatile compound, into the environment by proposing a two-component anti-asbestos paint characterized in that that it includes, as a percentage by volume in relation to its total volume:

Between 73 and 77%, preferably 75% of an A formulation,

Between 23 and 27%, preferably 25% of a formulation B, said formulation A comprises in percentage by volume relative to its total volume:

Between 11 and 29%, preferably 22% of polyamine resin in aqueous phase;

Between 17 and 21%, preferably 19% water;

Between 0.1 and 2%, preferably 0.2%, of mineral antifoam additive;

Between 0.05 and 0.5%, preferably 0.2% of slip additive;

Between 0.1 and 0.3%, preferably 0.3% of a surface additive;

Between 0.1 and 1.2%, preferably 0.7% of a dispersing additive;

Between 0 and 40%, preferably 17% of titanium dioxide;

Between 0 and 17%, preferably 3%, of titanium extender;

Between 0 and 10%, preferably 5%, barium sulfate;

Between 0 and 20%, preferably 7%, of talc;

Between 0 and 10%, preferably 9%, of silica; Between 0 and 10%, preferably 3%, of quartz sand;

Between 5 and 40%, preferably 6%, of calcium carbonate;

Between 0 and 4%, preferably 1.5% of wax without silicone;

Between 0 and 5%, preferably 2% carbonate additive;

Between 0.01 and 0.15%, preferably 0.05%, of castor oil;

Between 0.1 and 0.5%, preferably 0.1%, of natural thixotropic agent;

Between 0.2 and 0.8%, preferably 0.4%, of anti-sedimentant agent;

Between 0.2 and 0.8%, preferably 0.7%, of anti-gout agent;

Between 0 and 5%, preferably 1.1% coalescing agent;

Between 0 and 2%, preferably 1%, of surface polyurethane additive; said formulation B being constituted in volume percentage with respect to its total volume:

Between 37.5 and 100%, preferably 75% of epoxy resin in aqueous phase;

Between 0 and 27%, preferably 25% water.

According to a particular embodiment of the invention, said anti-asbestos two-component paint comprises, in volume percentage relative to its total volume:

Between 73 and 77% of an A formulation,

Between 23 and 27% of a formulation B, said formulation A being constituted in volume percentage with respect to its total volume:

Between 20 and 24%, preferably 22%, of polyamine resin in aqueous phase;

Between 17 and 21%, preferably 19% water;

Between 0.1 and 0.3%, preferably 0.2%, of mineral antifoam additive;

Between 0.1 and 0.3%, preferably 0.2%, of a slip additive;

0.3 to 0.5%, preferably 0.4%, of a surface additive;

Between 0.6 and 0.8%, preferably 0.7%, of a dispersing additive;

Between 15 and 19%, preferably 17%, of titanium dioxide;

Between 1 and 5%, preferably 3%, of titanium extender; Between 2 and 7%, preferably 5%, barium sulfate; Between 5 and 9%, preferably 7%, of talc;

Between 6 and 11%, preferably 9%, of silica;

Between 1 and 5%, preferably 3%, of quartz sand; Between 4 and 8%, preferably 6%, of calcium carbonate; - Between 1 and 2%, preferably 1.5% of wax without silicone; - Between 1 and 3%, preferably 2%, of additive based on carbonate; - Between 0.01 and 0.15%, preferably 0.1%, of castor oil; Between 0.1 and 0.5%, preferably 0.3% natural tixotropic agent; 0.2 to 0.8%, preferably 0.5%, of anti-sedimenting agent; 0.2 to 0.8%, preferably 0.5%, of anti-drip agent; Between 1 and 1.3%, preferably 1.1%, of coalescing agent; - Between 1 and 2%, preferably 1.5%, of surface polyurethane additive; said formulation B being constituted in percentage by volume relative to its total volume: between 72 and 77%, preferably 75% of epoxy resin in aqueous phase and

Between 23 and 27%, preferably 25% water.

Advantageously, said formulation A comprises, in percentage by volume relative to its total volume, between 0.5 and 2.5% of an anti-UV additive, preferably 1.8%.

Also specifically, said two-component anti-asbestos paint comprises bentonite and / or xanthan gum and / or a non-ionic hydrophobic polyether and / or cellulose and / or acrylic and / or polyurethane as a rheological agent.

The present invention also relates to a method of treating a stabilized support in which: - a first layer of anti-asbestos bicomponent paint of the invention is applied to said support,

A second layer of two-component anti-asbestos paint of the invention is applied to said first layer of paint after a drying time thereof, so as to obtain a total thickness of paint on said support comprising between 60 and 80 micrometers, preferably 70 micrometers,

The two-component anti-asbestos paint is allowed to dry for a period of between 45 and 50 hours, preferably 48 hours.

According to another additional characteristic of the process of the invention, prior to the first application of the anti-asbestos two-component paint on the support, an impregnation product is applied to prevent the asbestos from volatilizing from its support. .

According to one particularity of the invention, said impregnating product comprises in percentage by volume relative to its total volume: between 5 and 80%, preferably 30% of nanoacrylate-based resin;

Between 0.1 and 2%, preferably 0.3%, of an anti-foam additive;

Between 0.1 and 2%, preferably 0.9%, of a dispersing additive;

Between 0.05 and 0.8%, preferably 0.44%, of a surface additive;

Between 0 and 6%, preferably 6% of calcium carbonate; Between 0 and 3%, preferably 0.3%, of an anti-syneresis agent;

Between 0 and 1%, preferably 0.06, of an antimicrobial agent, preferably a fungicide

Water to get enough to have a volume of 100%.

The present invention also relates to the use of the two-component anti-asbestos paint of the invention for treating, by covering, the asbestos supports. Other characteristics and advantages of the invention will emerge from the following detailed description of non-limiting embodiments of the invention. The invention relates to an anti-asbestos two-component paint.

In the present invention, the term "two-component" paint means a paint comprising both formulation A and formulation B.

Formulation A represents a volume of between 73 and 77%, preferably 75% by volume percentage relative to the total volume of said anti-asbestos two-component paint, while formulation B represents a volume of between 23 and 27%, preferably 25%.

Formulation A comprises between 11 and 29%, preferably 22% of aqueous phase polyamine resin providing said paint with its property of resistance to friction.

Formulation A also comprises between 0.1 and 2%, preferably 0.2% of antifoam additive, such as for example a defoamer based on hydrophobic salts dispersed in a paraffinic mineral oil. The anti-foam additive prevents the formation of crater on the support after the application of the paint. Thus, the painted material will not have a rough and irregular undesirable surface.

Formulation A also comprises between 0.05 and 0.5%, preferably 0.2%, of slip additive, such as, for example, a solution of polyether modified dimethylpolysiloxane.

This slip additive has the effect of reducing the surface tension and increasing the slipperiness. The slip additive also influences the ability of adhesion on its support of the two-component paint in the case where it is covered with another layer of decorative or aesthetic order. The slip additive will increase the recoverability of the two-component paint and prevent the poor adhesion of the layers that would be put on top.

Formulation A also comprises between 0.1 and 0.3%; preferably 0.3% of a surface additive. The latter makes it possible to reduce the surface surface tension and also allows a good application of the spray paint. In addition, this surface additive has the effect of also increasing the compatibility with the other compounds in the aqueous phase.

Formulation Ά also comprises between 0.1 and 1.2%, preferably 0.7%, of a dispersing additive, such as, for example, an alkylolamonium salt with a high molecular weight acid copolymer. This dispersing additive increases the dispersing effect of the pigments, for example it consists of a solution of polyether modified dimethylpolysiloxane.

Formulation A can comprise between 0 and 40%, preferably 17%, of titanium dioxide, which is the white pigment responsible for the white color of the paint and its opacity. Titanium dioxide is an optional compound of formulation A, if the paint does not include titanium dioxide, it is colorless and therefore usable for the achievement of particular color by the addition of colored pigment.

Formulation A may also comprise a titanium extender between 0 and 17%, preferably 3%. The titanium extender can come in addition to titanium dioxide or replace it. The titanium extender, like titanium dioxide, makes it possible to modify the physical properties of the paint, by modulating its opacity or its translucency. According to the invention, if the titanium extender is in addition to the titanium dioxide, the extender titanium: titanium dioxide ratio is at most 20: 100. The greater the amount of titanium extender, the greater the amount of titanium extender. with titanium dioxide, the more the paint will be translucent, the opacity of said paint will decrease.

The formulation A may also comprise between 0 and 10% by volume relative to the total volume, preferably 5%, of natural or synthetic baryle sulphate. This compound makes it possible to increase the final density of the paint of the invention. Its presence increases in particular the surface hardness of the paint after application and drying on its support as well as the resistance to the claw.

The amount of barium sulphate is always less than 10% by volume relative to the total volume of formulation A, to avoid obtaining a paint with a density greater than 4.4 kg / L causing a risk of precipitation / sedimentation of lumps of paint at the bottom of his container.

Advantageously, the formulation A may also comprise between 0 and 20% by volume relative to its total volume, preferably 7% of talc. Talc is used in formulation A as a lamellar structure filler, influencing the gloss of the paint, which increases the resistance to light and water. In order to prevent the paint from being too bright, the amount of talc in formulation A is always less than 20% by volume relative to the total volume.

Formulation A can also comprise between 0 and 10%, preferably 9% by volume relative to the total volume of crystalline or non-crystalline silica. In order to avoid risks of toxicity of the paint of the invention, the amount of silica is always less than 10%.

The function of the silica is to be an anti-syneresis agent preventing phase shift between solid and liquid. Its presence makes it possible to increase the surface hardness of the paint after application on its support.

Formulation A can also comprise between 0 and 10% of quartz sand, preferably 3% by volume relative to its total volume. The quartz sand makes it possible to make the paint homogeneous and to increase the surface hardness of said paint, beyond 10% the paint is non-homogeneous and undesirable.

Advantageously, the size of the quartz sand particles is between 4 and 60 p.

According to a particular embodiment, the quartz sand may be replaced by phyllosillicates of the mica type.

According to the invention, the formulation A comprises between 5 and 40%, preferably 6%, by volume relative to its total volume, calcium carbonate for charging the other components. This calcium carbonate is a fine aggregate which serves as a mineral filler giving body to said formulation A. Calcium carbonate does not influence the efficiency of entrapment of asbestos by the paint.

Said formulation A may also comprise between 0 and 4%, preferably 1.5% by volume relative to its total volume of silicone-free wax, of the aqueous emulsion type of natural or synthetic wax or a mixture of wax. The presence of this wax makes it possible to influence the surface hardness of the paint and brings the slipperiness. The amount of wax is always less than or equal to 4% by volume because beyond it has been found a problem of recoverability of the paint by a layer of another miscellaneous product.

Formulation A of the invention also comprises between 0 and 5%, preferably 2%, by volume relative to the total volume, of additive based on carbonate to increase the washability of said paint of the invention, in particular nano-additive type based on fluorosilane emulsion.

Formulation A of the invention also comprises between 0.01 and 0.15%, preferably 0.1% of castor oil which can be replaced or in combination with bentonite, xanthan gum, polyether nonionic hydrophobic, cellulose, acrylic or polyurethane. All these compounds are rheological agents regulating the viscosity of said paint of the invention.

According to the invention, the formulation A comprises between 0.1 and 0.5%, preferably 0.1% thixotropic agent, preferably natural thixotropic agents.

This thixotropic agent consists for example of ethylmethyl cellulose or xanthan gum.

Formulation A also comprises between 0.2 and 0.8%, preferably 0.4% of anti-sedimenting agent such as, for example, natural silica or cellulose.

This anti-sedimenting agent has the effect of preventing the paint sediment in its container during use or storage.

Formulation A also comprises between 0.2 and 0.8%, preferably 0.7% of anti-drip agent, such as for example a polyurethane additive or an acrylate.

This anti-drip agent prevents during the application of the paint of the invention on its support the formation of non-aesthetic drop.

Advantageously, the formulation A also comprises between 0 and 5%, preferably 1.1% of coalescing agent, especially at high molecular weight, such as for example texanol, or glycols of butylglycol, butyldiglycol or propylene glycol type.

The presence of this coalescing agent makes it possible to slow down the drying of the paint film after application on its support, thus facilitating easy application by the user. In addition, the coalescing agent also allows the paint film to be properly tensioned on its support so to have a visually homogeneous and aesthetic distribution of the paint on its support.

The amount of coalescing agent is always less than or equal to 5% by volume relative to the total volume of the formulation A, because beyond it has been found that the paint film of the invention is incapable of drying on its support .

Formulation A also comprises a surface polyurethane additive of between 0 and 2%, preferably 1% by volume relative to the total volume of formulation A. The surface polyurethane provides hydrophobicity to the paint of the invention.

Advantageously, the formulation A can also comprise between 0.5 and 2.5%, preferably between 1.8 and 2%, of an anti-UV agent increasing the resistance to UV radiation of the support on which said paint of the invention. For example, the anti-UV agent consists of hindered amine light stabilizers.

According to the invention, said paint comprises, in addition to the formulation A, between 23 and 27%, preferably 25% of a formulation B.

According to the invention, the formulation B is constituted, in percentage by volume relative to its total volume of 37.5 and 100%, preferably 75% of epoxy resin in aqueous phase; supplemented or not with a volume of water of between 0 and 27%, preferably 25%.

The epoxy resin in aqueous phase serves as a binder to said paint.

According to the invention, the amount of epoxy resin in aqueous phase is correlated with the amount of polyamine resin in aqueous phase. Indeed, it has been found that an epoxy resin: polyamine resin ratio of 22:75 is the ideal ratio for trapping asbestos within its support.

The two-component anti-asbestos paint according to the invention has several advantageous properties. It is resistant to ultraviolet, oils, hydrocarbons and all types of salt. The application on a support amianté of the paint according to the invention makes it possible not to lift the asbestos fibers present on said support. Advantageously, the paint of the invention has the effect of increasing the asbestos fiber contained in the support, as a result, the asbestos becomes non-volatile and remains fixed on the support.

The paint of the invention has particular properties of adhesion to the support and abrasion resistance. In particular, said paint has an adhesion to the supported support, in particular on a concrete type support, of the order of 50 mPa / cm 2 and an abrasion resistance. These properties allow the paint to trap asbestos on its support and prevent its spread in the environment.

According to another specificity of the invention, the anti-asbestos two-component paint has the effect of reducing carbonation, especially concretes. As a result, said paint makes it possible to seal the various media trapping the asbestos fibers with air and carbon. Thus, the limitation of the carbonation phenomenon by the paint of the invention makes it possible to avoid a multiplication of asbestos fibers in its support and to totally block their propagation on the surface. The paint of the invention thus makes it possible to trap the asbestos fibers in its support.

Advantageously, said paint of the invention may further comprise intermediate adhesion additives.

According to another specificity of the invention, the support painted by said two-component anti-asbestos paint according to the process of the invention may be covered by any material, in particular if intermediate adhesion additives have been used. .

The physicochemical properties of the paint of the invention were tested in comparison with a decorative paint: dispersol and with a competing paint.

The measured physicochemical parameters are viscosity, density, opacity, hardness, resistance to wet abrasion.

The viscosity was measured using a viscometer. It represents the degree of fluidity of the paint, that is to say its resistance to deformation under the effect of shear stress. The ease of application of a paint depends on its viscosity.

The density was measured using water as a reference. The opacity of the paint represents the ability of the paint to cover the support, that is to say the ability of the paint to hide the defects of the support. Opacity is measured by applying a paint film of known thickness to a surface with a printed pattern and measuring the percentage of the surface covered by the paint.

The hardness of the paint was measured by applying the ISO 1522 standard, which consists in measuring the damping time in seconds of a needle on a support painted with paint after inclination of 12 to 15 °. The lower the time in seconds, the softer the product. The hardness was measured after 24h, 48h and 72h after application of the paint on the support. The harder the paint, the better is its ability to trap asbestos in the painted support.

The resistance to wet abrasion was measured by applying the standard NF 13 300 which consists in measuring the thickness loss in μm of the paint film applied to the support, after 200 cycles of friction of a wet sponge on said support . The classification in class I means that the paint film applied to the substrate loses less than 5 μm in thickness after 200 cycles of wet friction, whereas a classification in class I means that the paint film loses between 2 and 20 μm. thick after 200 cycles of friction. A low abrasion resistance avoids a loss of thickness of the paint on the support therefore decreases the risk of asbestos leakage from the painted support.

The table below shows the results obtained for the two-component anti-asbestos paint in comparison with a decorative paint, dispersol and a competing paint.

Table 1:

As mentioned above in the table above, the formulation of the paint of the invention makes it possible to have advantageous physicochemical properties. Indeed, the paint of the invention resists abrasion and has a high hardness. Thus, the paint of the invention after application on the support amianté does not deteriorate and retains its asbestos trapping properties on its support.

The entrapment of asbestos in its support is possible thanks to the implementation of the method of treating a stabilized support of the invention.

Indeed, the present application also relates to a method for treating a stabilized support in which several successive steps are carried out, namely:

Step 1: applying a first layer of anti-asbestos bicomponent paint of the invention to said stabilized support;

Step 2: a second layer of two-component anti-asbestos paint of the invention is applied to said first layer of paint after a drying time thereof, so as to obtain a thickness of paint on said supported support comprising between 60 and 80 micrometers, preferably 70 micrometers;

Step 3: The two-component anti-blocking paint is allowed to dry for a period of between 45 and 50 hours, preferably 48 hours.

Thus, the implementation of this method of application of the paint makes it possible to trap the asbestos fibers of the support. After the application of the paint, the asbestos is no longer volatile, and the support coated with the paint of the invention no longer represents any danger to health and the environment.

It should be noted that said anti-asbestos two-component paint of the invention can be applied to asbestos substrates present outdoors or indoors. For example, on asbestos-type substrates such as glue, plaster, plaster, concrete, sandwich panel, floors or any other hard and non-friable substrates containing asbestos.

Advantageously, in order to increase the trapping efficiency of asbestos by implementing the method of the invention, prior to the above-mentioned step 1, step 0 is carried out. impregnation product on the support, the latter being intended to prevent asbestos from volatilizing its support, especially during its application.

Said impregnating product makes it possible to trap the asbestos fibers in the support and thus make them less volatile. Advantageously, this impregnation product can be applied by brush, roller or by injection to the mechanical pump. The means of application is variable depending on the constraints of the type of support friendly.

According to the invention, said impregnating product comprises in percentage by volume relative to its total volume:

Between 5 and 80%, preferably 30% of nano acrylate resin;

Between 0.1 and 2%, preferably 0.3%, of an anti-foam additive;

Between 0.1 and 2%, preferably 0.9%, of a dispersing additive;

Between 0.05 and 0.8%, preferably 0.44%, of a surface additive;

Between 0 and 6%, preferably 6% of calcium carbonate; Between 0 and 3%, preferably 0.3%, of an anti-syneresis agent;

Between 0 and 1%, preferably 0.06, of an antimicrobial agent, preferably a fungicide

Water to get a sufficient amount to reach a volume of 100%.

According to the invention, the nano-acrylate-based resin of the impregnation product allows deep penetration of the paint of the invention into the support to which it is applied.

The amount of acrylate-derived resin is always greater than or equal to 5%, and less than or equal to 80% by volume relative to the total volume of the impregnating product. Indeed, it has been shown that outside these threshold limits, the penetration of the impregnating product into the support is not achieved and the adhesion of the two-component anti-blocking paint is not effective. Thus, outside these threshold limits, the trapping of asbestos is not possible.

According to the invention, the percentage of the antifoam additive of the impregnating product is never greater than 2%. Indeed, beyond 2%, the two-component paint of the invention forms, after application to the preimpregnated material, a non-homogeneous film having an uneven rough and irregular surface. Advantageously, the antifoam additive of the impregnating product may consist of a defoamer based on hydrophobic salts dispersed in a silicone-free paraffinic mineral oil. The dispersant additive of the impregnating product may be, for example, an ammonium polymetaphosphate salt in solution in water, whose role is to help disperse the calcium carbonate. The amount of dispersant additive is less than or equal to 2%. Indeed, the pH of the impregnating product must remain basic, that is to say greater than 7 to have a stable viscosity and better storage stability. Thus, it has been found that by using more than 2% acid-releasing additive, the overall acidic pH of the impregnating product changes its storage resistance and viscosity properties. The surface additive of the impregnating product may for example be a solution of polyether modified dimethylpolysiloxane which makes it possible to reduce the surface tension and to increase its surface slipperiness. Nevertheless, the presence of this surface additive does not influence the trapping efficiency of asbestos in the support.

The impregnating product also comprises calcium carbonate as a mineral filler to give body to the impregnating product. Calcium carbonate does not influence the entrapment efficiency of asbestos in the support, it can in particular be replaced by talc.

The impregnating product also comprises an anti-syneresis agent such as, for example, crystalline or non-crystalline silica. According to a particular embodiment of the invention, the silica may be replaced by xanthan gum in solution or an organic derivative of bentonite clay.

The function of the silica is to prevent the phase shift between solid and liquid, its presence makes it possible to increase the hardness of the impregnation product after application in the support.

The impregnating product may also comprise an antimicrobial agent, in particular of the fungicidal type, which makes it possible to protect it against contamination by microorganisms, more specifically by fungi. Thus, this agent will make it possible to increase the retention over time of the impregnating product and to prevent it from rotting quickly in storage. The antimicrobial agent is, for example, chloromethylisothiazolinone and / or methylisothiazolinone and / or a benzisothiazolinone solution. If present, the antimicrobial agent is less than or equal to 1% by volume based on the total volume of the impregnating product.

Preferably, the injection of the impregnating product into the stabilized support is carried out using an injector avoiding the piercing of the support to be treated. These injectors are for example of the gas pistol or powder type.

The paint and the method of the invention have the advantage of being able to prevent the propagation of asbestos fibers contained in a support by a simple technique, easy to implement and without danger to the environment. Thus, the fibers of amiantes of these supports covered by said paint become non-degradable and non-volatile. These asbestos supports, preferably pre-impregnated treated with said paint are again in safety standards and can be used again.

The results set out below show the effectiveness of the two-component anti-asbestos paint of the invention on asbestos substrates. The effectiveness of entrapment of asbestos by the paint of the invention has been demonstrated in a room with asbestos walls, in particular 95% of the walls of the room were asbestos.

During asbestos trapping work, the asbestos fiber dust content was measured in 10 m3 of air for 24 hours according to standard NF X 43-050. The analysis and counting of asbestos fibers according to this standard are carried out by analytical electron microscopy (META). All asbestos fibers longer than 5 micrometers, less than 3 micrometers wide and having a length-to-width ratio greater than 3 are taken into account. The air sample is taken by suction of a volume of air through a cellulose ester filtration membrane having a porosity of 0.45 μιη by means of a pump equipped with a volumetric meter. Thus, the ability of the paint to prevent the spread of asbestos in the air during the work is measured.

The concentration of asbestos fibers during application of the paint of the invention by the painter is less than or equal to 5 asbestos fibers / liter, more specifically of the order of 0 asbestos fibers / liter.

The concentration of asbestos fibers 48 hours after application of the paint on the asbestos walls is lower is 0 to 0 asbestos fibers / liter.

Thus, during the works and after works; there was no dissemination of asbestos in the air, the fibers of asbestos remained trapped in the walls thanks to the paint of the invention.

Thus, the two-component paint of the invention makes it possible to trap asbestos in the support and avoids its dispersion in the air even during the treatment work of the support. The physico-chemical properties of the paint are such that its degradation after application to the support is impossible. Asbestos fibers are no longer a danger to health and the environment.

The paint of the invention can be used to cover and treat any type of support in order to trap asbestos and eliminate the danger associated with these media. The use of said paint of the invention is a simple, inexpensive, quick and easy solution for treating the ammunition media.

Claims (8)

1. Anti-asbestos two-component paint characterized in that it comprises, in volume percentage relative to its total volume: between 73 and 77%, preferably 75% of a formulation A; Between 23 and 27%, preferably 25% of a formulation B; said formulation A comprises in percentage by volume relative to its total volume: between 11 and 29%, preferably 22% of polyamine resin in aqueous phase; - Between 17 and 21%, preferably 19% water; - Between 0.1 and 2%, preferably 0.2%, mineral antifoam additive; - Between 0.05 and 0.5%, preferably 0.2% of slip additive; - Between 0.1 and 0.3%, preferably 0.3% of a surface additive; - Between 0.1 and 1.2%, preferably 0.7% of a dispersing additive; - Between 0 and 40%, preferably 17% of titanium dioxide; ~ Between 0 and 17%, preferably 3%, of titanium extender; - Between 0 and 10%, preferably 5%, of baryte sulfate; - Between 0 and 20%, preferably 7%, of talc; - Between 0 and 10%, preferably 9%, of silica; - Between 0 and 10%, preferably 3%, of quartz sand; - Between 5 and 40%, preferably 6%, of calcium carbonate; - Between 0 and 4%, preferably 1.5% of wax without silicone; - Between 0 and 5%, preferably 2% of additive based on carbonate; - Between 0.01 and 0.15%, preferably 0.05%, of castor oil; Between 0.1 and 0.5%, preferably 0.1%, of natural thixotropic agent; 0.2 to 0.8%, preferably 0.4%, of anti-sedimenting agent; 0.2 to 0.8%, preferably 0.7%, of anti-gout agent; - Between 0 and 5%, preferably 1.1% of coalescing agent; - Between 0 and 2%, preferably 1%, of surface polyurethane additive; said formulation B being constituted in volume percentage relative to its total volume: between 37.5 and 100%, preferably 75% of epoxy resin in aqueous phase; - Between 0 and 27%, preferably 25% water. 2. anti-asbestos two-component paint according to the preceding claim characterized in that it comprises, in percentage by volume relative to its total volume: - Between 73 and 77% of a formulation A, - between 23 and 27% d a formulation B, said formulation A being constituted in volume percentage with respect to its total volume: between 20 and 24%, preferably 22%, of polyamine resin in aqueous phase; - Between 17 and 21%, preferably 19% water; - Between 0.1 and 0.3%, preferably 0.2%, mineral antifoam additive; - Between 0.1 and 0.3%, preferably 0.2%, of a slip additive; - Between 0.1 and 0.3%, preferably 0.3%, of a surface additive; - Between 0.6 and 0.8%, preferably 0.7%, of a dispersing additive; - Between 15 and 19%, preferably 17%, of titanium dioxide; Between 1 and 5%, preferably 3%, of titanium extender; Between 2 and 7%, preferably 5%, of barite sulphate; Between 5 and 9%, preferably 7%, of talc; - Between 6 and 10%, preferably 9%, of silica; Between 1 and 5%, preferably 3%, of quartz sand; - Between 4 and 8%, preferably 6%, of calcium carbonate; - Between 1 and 2%, preferably 1.5% of wax without silicone; - Between 1 and 3%, preferably 2%, of additive based on carbonate; - Between 0.01 and 0.15%, preferably 0.1%, of castor oil; Between 0.1 and 0.5%, preferably 0.3% natural tixotropic agent; 0.2 to 0.8%, preferably 0.5%, of anti-sedimenting agent; 0.2 to 0.8%, preferably 0.5%, of anti-drip agent; Between 1 and 1.3%, preferably 1.1%, of coalescing agent; - Between 1 and 2%, preferably 1.5%, of surface polyurethane additive; said formulation B being composed in volume percentage relative to its total volume: between 72 and 77%, preferably 75% of epoxy resin in aqueous phase and between 23 and 27%, preferably 25% of water. 3. Anti-asbestos two-component paint according to any one of the preceding claims characterized in that said formulation A comprises, in percentage by volume relative to its total volume, between 0.5 and 2.5% of an anti-asbestos additive. UV, preferably 1.8%. 4. Anti-asbestos bicomponent paint according to any one of the preceding claims, characterized in that it comprises bentonite and / or xanthan gum and / or a non-ionic hydrophobic polyether and / or cellulose and / or acrylic and or polyurethane as a rheological agent. 5. A method of treating a tethered support, characterized in that: - A first layer of anti-asbestos bicomponent paint according to any one of the preceding claims is applied to said tethered support. first layer of paint, after a drying time thereof, a second layer of two-component anti-asbestos paint according to any one of the preceding claims, so as to obtain a total thickness of paint on said support-friendly between 60 and 80 micrometers, preferably 70 micrometers. The two-component anti-asbestos paint is allowed to dry for a period of between 45 and 50 hours, preferably 48 hours. 6. A method of treating a tethered support according to the preceding claim characterized in that, prior to the first application of the two-component anti-asbestos paint on the support amianté, an impregnating product is applied to prevent the asbestos to volatilize from its support. 7. A method of treating a stabilized support according to the preceding claim characterized in that, said impregnating product comprises in volume percentage relative to its total volume: - Between 5 and 80%, preferably 30% of resin based nano acrylate; Between 0.1 and 2%, preferably 0.3%, of an anti-foam additive; between 0.1 and 2%, preferably 0.9%, of a dispersing additive; - Between 0.05 and 0.8%, preferably 0.44%, of a surface additive; - Between 0 and 6%, preferably 6% of calcium carbonate; Between 0 and 3%, preferably 0.3%, of an anti-syneresis agent; - Between 0 and 1%, preferably 0.06, of an antimicrobial agent, preferably a fungicide - Water to obtain an amount sufficient to have a volume of 100%. 8. Use of the anti-asbestos two-component paint according to any one of claims 1 to 4 for treating, by covering, the asbestos supports.