Coating composition containing photocatalyst coated with apatite, and radiant heating system containing said composition

FIELD: chemistry.

SUBSTANCE: invention relates to photocatalytic coating compositions. The coating composition contains 5-20 wt % photocatalyst selected from titanium dioxide, zinc oxide, zirconium oxide, tin oxide, vanadium trioxide and combinations thereof, which is coated with hydroxyapatite, 5-15 wt % silicon alkoxide-based binder, 1-5 wt % acrylic emulsion, 0.1-1 wt % thickener which is xanthane gum, and 64-85 wt % water. The degree of coverage of the photocatalyst by hydroxyapatite ranges from 5 to 36%, the average diameter of particles of the photocatalyst coated with hydroxyapatite ranges from 1 to 250 nm. Disclosed is a radiant heating system containing said composition. The radiant heating system consists of a heating layer 1, a substrate 2, a heat-radiating layer 3, a heat-insulating layer 4, a non-uniform layer 5 which increases radiating power of the system, and a photocatalytic coating layer 6. Methods of producing radiating heating systems are described.

EFFECT: preventing separation of the photocatalyst from the substrate, increasing impurity adsorption capacity, which provides efficient decomposition of impurities by the photocatalyst; the radiating heating system has deodorising and antibacterial properties.

15 cl, 20 dwg, 4 tbl, 4 ex

 

The SCOPE of the INVENTION

The present invention relates to compositions for coating containing the photocatalyst-coated Apatite, and radiation heat containing this composition.

The LEVEL of TECHNOLOGY

A photocatalyst is a substance absorbing light in a predetermined wavelength range, which contributes to the initiation of chemical reactions. The photocatalyst, for example, provides complete oxidation of toxic substances to carbon dioxide and water when using an oxidant (such as oxygen or water) when exposed to light.

Since the end of 1980-ies in developed countries was conducted substantial research has focused on the reactions of photocatalytic oxidation with the use of photocatalysts, which are considered as high-tech oxidative processes. In a typical reaction photocatalytic oxidation as intermediate compounds, oxidizing organic impurities, are formed hydroxyl radicals and superoxides. An important advantage of the photocatalytic reactions of oxidation is the possibility of achieving a sufficient degree of decomposition of the organic impurities in the application of only one oxygen without adding additional oxidants such as hydrogen peroxide and ozone, as well as the possibility of achievement of the effect of disinfection.

Photocatalysts are widely used with the purpose of decomposition of impurities in different areas of technology. In Japan is currently being developed and implemented a large number of photocatalytic products are able to break down harmful organic substances.

For example, the photocatalyst is applied to the concrete and materials for exterior decoration of buildings (e.g., tiles) to maintain the surface of the concrete and buildings clean at least for ten years. Known photocatalytic products are very effective in the decomposition of organic impurities, but in low light conditions, in particular the lack of UV radiation, for example, indoors, specific properties of such photocatalysts appear insufficient. Accordingly, when applying the known photocatalytic products to products used in the interior, performance photocatalytic products decline sharply.

In the patent application in the Republic of Korea No. 10-2000-0059193 And October 9, 2000, described the material nozzles for cooling towers, in which in order to achieve semi-continuous sterilization used photocatalyst for sterilization, eliminating the need for periodic addition and utilization of sterilization and the clients, without causing contamination of the cooling water and the harmful effects on the equipment.

In the patent application in the Republic of Korea No. 10-2000-0045311 And dated August 4, 2000 proposed water purification system using the rotating element containing film coating based on titanium oxide as a photocatalyst.

In the patent application in the Republic of Korea No. 10-2000-0035845 As of June 28, 2000, describes the capacity for water purification for purification of water in the vessel used UV light and titanium dioxide.

The publication of the patent application of Japan No. 2008-105905 may 8, 2008, for which no examination is carried out, the system described photolysis of water using photocatalyst.

The publication of the patent application of Japan No. 2008-094709 dated 24 April 2008, for which no examination is carried out as described photocatalytic additive to the cement slurry for use in construction, suitable for purification of organic substances.

The publication of the patent application U.S. No. 2007-0297973 on December 27, 2007, describes a method for the photocatalyst.

The publication of the patent application U.S. No. 2006-0159598 dated July 20, 2006, described the purifier, which is used photocatalyst.

Description of the INVENTION

TECHNICAL TASK

Traditionally used photocatalytic products are very effective in the decomposition of organic impurities in the UV region, but the low light conditions, in particular indoors, they show their specific properties are insufficient. Accordingly, when applying traditionally used photocatalytic products to products used indoors inherent photocatalytic products operating characteristics (for example, the decomposition of impurities and sterilizing properties) appear insufficient.

There is therefore a need to develop compositions photocatalytic coating suitable for application to products designed for use both outside and inside the premises.

Photocatalysts capable of decomposing substrate (or media) due to their high catalytic activity. Photocatalysts absorb UV radiation with the formation of hydroxyl radicals or superoxide, which decompose the substrate to water and carbon dioxide. As a result of decomposition is the separation of photocatalyst from the substrate, which leads to deterioration of operational properties of photocatalytic products.

There is therefore a need to develop compositions photocatalytic coatings that minimize separation of the photocatalyst on a substrate.

On the other hand, the radiation of heat, known from the prior art, is not able to purify the air in the room is from the components with an unpleasant odor. Heated room with the use of radiating heat, known from the prior art, activates the molecules of the components of cigarette smoke components and with an unpleasant odor, unpleasant smell inside the room increases. Moreover, the increase of temperature when the heating creates a favorable environment for the proliferation of bacteria. It must be concluded that, since the radiation of heat, known from the prior art, is unable to clean the indoor air, unpleasant smell in the room increases, while also accelerating the growth of bacteria.

There is therefore a need to develop systems of radiation heating, capable of cleaning the air inside the room.

TECHNICAL SOLUTION

The present invention is directed to solving the above problems existing in the prior art; one of the objectives of the present invention is to develop a composition photocatalytic coating suitable for application to products designed for use both outside and inside buildings due to their high photocatalytic performance characteristics even in the visible region.

Another objective of the present invention is to develop a system of radiation heat containing composition photocatalytic coatings for air purification in Utri premises.

In accordance with one aspect of the present invention proposed composition of the photocatalytic coating containing from 5 to 20% wt. photocatalyst coated with hydroxyapatite, from 5 to 15% wt. binders based on alkoxide of silicon, from 1 to 5% wt. acrylic emulsion, from 0.1 to 1% wt. thickener and from 54 to 85 wt.%. water.

The photocatalyst coated with hydroxyapatite preferably has a coverage ratio of from 5 to 36%.

The average particle diameter of the photocatalyst coated with hydroxyapatite is preferably from 1 to 250 nm.

The photocatalyst is preferably selected from titanium dioxide, zinc oxide, zirconium oxide, tin oxide, vanadium trioxide, and combinations of these compounds.

The thickener is preferably a xanthan gum.

The composition of the photocatalytic coating according to the invention is preferably used in the production systems of radiation heating.

In accordance with another aspect of the present invention proposed a system of radiation heat containing composition photocatalytic coating.

In the particular case of the system of radiation heating according to the invention includes a substrate, a heating layer and a heat-radiating layer.

The substrate preferably is a plate made from aluminum is INIA or stainless steel (SUS, Stainless Steel).

The heating layer is preferably receives at least one nichrome wire covered with silicone, Teflon or glass thread.

Heat-radiating layer is preferably produced by applying onto the substrate a mixture of emitting inorganic material, 20 to 25% wt. alkoxysilanes glue and 10 to 15% wt. an alcoholic solvent and then removing the solvent by drying, and emitting inorganic material consists of 6-12 wt.%. TiO2Between 20 and 30% wt. SiO2, 5-10 wt.%. ZrO2, 5-10 wt.%. Al2O3, 5-10 wt.%. Fe2O3, 5-10 wt.%. MnO2and 1-5 wt.%. Na2O.

The system of radiation heating according to the invention further comprises a heat-insulating layer on the outer surface, opposite the surface of the heat-radiating layer.

The insulating layer preferably consists of glass, and the thickness of the specified layer is from 15 to 25 mm

The system of radiation heating according to the invention further comprises an uneven surface layer lying on the surface of the heat-radiating layer.

The uneven surface layer is preferably obtained by applying a supersaturated aqueous solution of a mixture of SiO2and Sao2on the surface of the heat-radiating layer and removal of water by drying.

The uneven surface layer is preferably obtained by applying a supersaturated aqueous solution of a mixture of SiO 2and Sao2mass ratio of 1:4 on the surface of the heat-radiating layer and removal of water by drying.

The system of radiation heating according to the invention further comprises a layer of photocatalytic coating.

The thickness of the photocatalytic coating is preferably from 30 to 300 microns.

In accordance with another aspect of the present invention, a method for manufacturing the radiation of heat, and this method includes the steps of applying the composition photocatalytic coating on a heat-producing layer and curing the surface of the heat-radiating layer in the temperature range from 18 to 150°C.

In accordance with another aspect of the present invention, a method for manufacturing the radiation of heat, and the method includes the steps of applying the composition photocatalytic coating on an uneven surface layer and curing the surface of the uneven surface of the layer in the temperature range from 18 to 150°C.

Before a detailed description of the present invention should include the following definitions of terms used.

The term "coating material" is a generic term covering liquid materials, including paints and varnishes, applied to the surface of solid materials with the formation of solid plait is OK. The coating material protects the surface of solid materials or makes the surface aesthetically appealing. The coating material is in a liquid state, including in the gel state, before and during application. Preferred are drying and curing of the coating material immediately after application.

The term "Apatite" refers to a material that can adsorb organic matter and bacteria, and is characterized by the formula Cax(FO4)y(OH)z(x=5z, y=3z, z=1-50). A typical example of Apatite is hydroxyapatite, which has the molecular formula of CA10(PO4)6(OH)2.

The term "coverage ratio" is defined as the value obtained by calculating the ratio of the area of the surface of the first material, on which is adsorbed or occupied by the second material, the total surface area of the first material, and multiplication relations at 100.

BRIEF DESCRIPTION of DRAWINGS

The above and other objects, features and other advantages of the present invention will be clearer from the following further detailed description, considered in conjunction with the attached drawings, and:

figure 1 shows the system structure of the radiative heating in accordance with one embodiments of the present invention;

the piano is D.2 results of research on the extent of removal of acetaldehyde composition according to the present invention by irradiation of visible light;

figure 3 shows the results of the research degree of removal of ammonia composition according to the present invention by irradiation of visible light;

figure 4 shows the results of studies of the degree of removal of acetaldehyde composition according to the present invention by irradiation of UV light;

figure 5 shows the results of the research degree of removal of ammonia composition according to the present invention by irradiation of UV light;

figure 6 shows the results of studies of antibacterial activity against Escherichia coli, Staphylococcus aureus and Salmonella typhimurium;

figure 7 shows images showing antibacterial activity against Escherichia coli in accordance with 6;

on Fig the above image showing antibacterial activity against Staphylococcus aureus in accordance with 6;

figure 9 shows images showing antibacterial activity against Salmonella typhimurium in accordance with 6;

figure 10 shows a graph showing the emissivity of the radiation heat containing composition photocatalytic coating according to the invention, in the far infrared region.

The PREFERRED embodiment of the INVENTION

Further details of preferred embodiments of the infusion is of his own invention.

In the present invention proposed composition of the photocatalytic coating containing from 5 to 20% wt. photocatalyst-coated hydroxyapatite, from 5 to 15% wt. binders based on alkoxide of silicon, from 1 to 5% wt. acrylic emulsion, from 0.1 to 1% wt. thickener and from 54 to 85 wt.%. water based on the total weight of the material.

The photocatalyst-coated hydroxyapatite, is a very important component of the compositions of the photocatalytic coating. Traditionally used photocatalysts have a tendency to separation from substrates (or carriers) over time, due to the fact that they decompose the substrate to the same extent as impurities. On the contrary, the photocatalyst-coated Apatite used in the composition of the photocatalytic coating according to the invention, prevents the photocatalyst from direct contact with Apatite used as the substrate and thereby prevents separation of the photocatalyst on a substrate. In addition, Apatite increases the adsorption of impurities due to the presence of porous structure that allows for efficient decomposition of impurities by the photocatalyst.

Photocatalyzing may be selected from titanium dioxide, zinc oxide, zirconium oxide, tin oxide, vanadium trioxide, and combinations of these compounds. Sredstv the e high photocatalytic activity preferred is titanium dioxide. It is known that the photocatalytic activity of the photocatalysts increases in the following order: titanium dioxide > zinc oxide > zirconium oxide > tin oxide > vanadium oxide.

The photocatalyst-coated hydroxyapatite, preferably added in an amount of 5 to 20% wt. calculated on the total weight of the composition. If the photocatalyst-coated hydroxyapatite, type in the amount of less than 5% wt., the demonstration of beneficial effects, including antibacterial activity, antifungal activity, deodorizing effects, and improve the quality of indoor air is hindered. At the same time, if the photocatalyst-coated hydroxyapatite add more than 20 wt.%, the amount of expensive catalyst increases, which is economically disadvantageous.

The coverage ratio of hydroxyapatite in relation to the surface area of the photocatalyst is preferably from 5% to 36%. If the coverage ratio is less than 5%, the ability to hydroxyapatite adsorption of impurities unsatisfactory and the photocatalyst can be separated from the substrate. At the same time, if the coverage ratio exceeds 36%, hydroxyapatite covers a significant portion of the photocatalyst, which degrades its performance characteristics.

The average particle diameter of the photocatalyst coated with Apatite is m, is preferably from 1 to 250 nm. If the average particle diameter of the photocatalyst-coated Apatite is less than 1 nm, the application of the photocatalyst in the composition of the coating material is negligible, and its ability to absorb light significantly reduced. If the particle diameter of the photocatalyst medium, large 250 nm particles of photocatalyst difficult dispersing in water, making it virtually impossible to receive the coating material, in which the photocatalyst dispersed homogeneous.

Binder-based alkoxide of silicon is well mixed with the photocatalyst. The binder on the basis of silicon dioxide serves to prevent aggregation of the particles of the photocatalyst and dispersion of particles of titanium dioxide, used as photocatalyst in water. For this binder on the basis of silicon dioxide is preferably added in an amount of 5 to 15% wt. calculated on the total weight of the composition. The use of binders on the basis of silicon dioxide in amounts less than 5% wt. may cause aggregation of the particles of the photocatalyst. At the same time, the use of binders on the basis of silicon dioxide more than 15% wt. leads to blocking of the surface of photocatalytical that affects the photocatalytic activity of fo is Katalizator.

Acrylic emulsion is an additional binder. Acrylic emulsion serves to provide a reliable fixing of the applied photocatalyst and a binder on the basis of silicon dioxide on the surface of the radiation of heat, as described below. The content of the acrylic emulsion is preferably from 1 to 5% wt. calculated on the total weight of the composition. The use of acrylic emulsion outside the scope of this interval affects the consolidation and photocatalytic activity of the photocatalyst.

The thickening agent is a component that imparts viscosity other components; and preferably is a xanthan gum. The content of the thickener is preferably from 0.1 to 1% wt. calculated on the total weight of the composition. Outside this range the viscosity of the composition becomes too low or too high, resulting in poor fluidity of the material and its ability to inflict.

With regard to economic efficiency, activity of titanium dioxide, the viscosity of the coating material and technological properties of the coating amount of water preferably ranges from 54 to 85 wt.%. calculated on the total weight of the composition.

Next is explained a method of applying a composition photocatalytic coating according to the invention.

The photocatalytic composition in which rite according to the invention can be applied to various substrates by spraying, makanya or roller. Examples of such substrates include concrete, wood and plastic substrates.

The composition of the photocatalytic coating is applied on the emissivity of the panel system radiation heating using one of the methods of coating, forming a film coating. Curing of the coating on the emissivity of the panel, preferably in the temperature range from 18 to 150°C. the curing Temperature less than 18°C will reduce the hardness of the film coating. At the same time, the curing temperature over 150°C increases the risk of cracking film coating due to too rapid curing.

The present invention also proposed a system of radiation heat containing composition photocatalytic coating.

It is understood that the system of radiation heating according to the invention includes a heating system in which the applied composition photocatalytic coating containing teploizoljatsionnye material and the heating device, and view teploizoljatsionnogo material and a heating device is not imposed special restrictions. In one of the embodiments of the invention, the system of radiation heating has a high emissivity in the far infrared region.

<> In the system of radiation heating using a composition photocatalytic coating; this system includes a substrate, a heating layer and a heat-radiating layer. The composition of the photocatalytic coating is uniformly mixed with the material of the heat-radiating layer or applied to obtain the photocatalytic layer of the coating. The system of radiation heating may further comprise insulating layer.

Figure 1 shows the system structure of the radiative heating in accordance with another embodiment of the present invention. In particular, the system of radiation heating includes a substrate 2, a heating layer 1, the heat radiating layer 3, the insulating layer 4, the uneven surface layer 5 and the layer of photocatalytic coatings 6.

Insulating layer 3 can be obtained from at least one inorganic substance selected from the TiO2, SiO2, ZrO2, Al2O3, Fe2O3, MnO2, 2MgO-2Al2O3-5SiO2and Al2O3-TiO2. It is preferable to choose an inorganic substance from the group consisting of TiO2, SiO2, ZrO2, Al2O3, Fe2O3, MnO2and Na2O. Mentioned inorganic materials can be used individually or as a mixture.

In particular, teplosluzhby the th layer 3 is preferably produced by applying a mixture of emitting inorganic material, 20-25% wt. alkoxysilanes glue and 10-15 wt.%. an alcoholic solvent to the substrate 2 and removal of the solvent by drying. Emitting inorganic material consists of 6-12 wt.%. TiO2Between 20 and 30% wt. SiO2, 5-10 wt.%. ZrO2, 5-10 wt.%. Al2O3, 5-10 wt.%. Fe2O3, 5-10 wt.%. MnO2and 1-5 wt.%. Na2O. At temperatures from about 92°C. to about 110°C heat radiating layer 3 capable of emitting thermal electromagnetic wave whose length ranges from 2.5 to 25 microns (Central wavelength of 9 μm) and which are known to have a high penetrating power.

Material heat-radiating layer preferably has a high purity and a large particle size, for example at least 350 mesh (72,5 μm).

Heat radiating layer 3 can be obtained by mixing an inorganic material with an adhesive and a solvent, applying the mixture on one surface of the substrate 2 and drying the mixture. Glue is a material with high thermal conductivity and excellent heat resistance. In particular, the adhesive is thermally stable at 250°C. or higher, preferably at 300°C or higher. For the described purpose can be used any known adhesive material; examples of such materials include acrylic resin and epoxy resin. The solvent may be applied to dissolve Italy based on the ketone.

In an alternative embodiment of the invention, the system of radiation heat can be produced by mixing the heat-radiating material layer 3 with a composition photocatalytic coating and drying the mixture. Although the system of radiation heating is effective for cleaning the air, it has a relatively low photocatalytic activity in comparison with the system of radiation heat containing layer of the photocatalyst coating 6, obtained with the use of a composition photocatalytic coating.

The substrate 2 plays the role of a support for a heat-radiating layer 3 and the heating layer 1. Specific limitations to the type of substrate material are missing. The substrate 2 may be a plate made of synthetic resin, stainless steel (known to the person skilled in the technical field as SUS) or aluminum. In particular, the substrate is made from a material that has high heat resistance, physico-chemical properties which do not undergo changes in the temperature range from 92 to 250°C and which preferably has a coefficient of thermal expansion close to the corresponding value for the adjacent layers, i.e. the heating layer 1 and the heat radiating layer 3. The substrate is preferably made of a material having high thermal conductivity and low what letestu, that helps reduce the weight of the radiation heating. The system according to the invention can be placed on the ceiling or on the wall. The system according to the invention can be attached to the supporting structure. Therefore, the reduced mass of the system corresponding to the present invention, is considered as an important factor. The substrate 2 preferably is a plate made from aluminium.

For the manufacture of the heating layer 1 may be any material possessing the ability to generate heat upon receiving power from an external power source. The heating layer 1 is preferably made of a material having a low resistance change depending on the temperature (which means a weak dependence of the resistance on temperature), which is very flexible and is not exposed to strong changes of physico-chemical properties. For example, for the manufacture of the heating layer 1 may use a heat-producing a thin wire. If heat radiating wire of small cross section has a low mechanical strength or if there is a tendency to oxidize its surface, which increases the contact resistance, it can degrade the performance of a system according to the invention.

The heating layer 1 can be manufactured, for example, by coating on minority who she least one heat-radiating wires (for example, ferrochromium (Fe-Cr), nichrome (Ni-Cr) or copper-Nickel (Cu-Ni) wires) synthetic resin (for example, poliferation (Teflon, DuPont, USA), silicone or glass thread, which is a type of fiberglass that are well known in the prior art), stable at such high temperatures, 300°C. heat-radiating wire, covered with synthetic resin generates heat when receiving energy and transfers heat to a heat-producing layer 3.

If the location of the radiation heating according to the invention is chosen arbitrarily, on the outer surface of the system, the opposite surface teploizoljatsionnogo layer 3, can be placed insulating layer 4. In this case, the insulating layer 4 block the passage of heat generated from the heating layer 1 through the surface opposite to the surface teploizoljatsionnogo layer 3, which allows for efficient emission of thermal radiation. In addition, the insulating layer 4 can stop the heat generated in the heating layer 1, which reduces the risk of fire.

Insulating layer 4 is preferably made of non-combustible lightweight material, such as plasterboard or fibre high density cardboard. Especially preferred is a fiber-optic high cardboard PLO is ness, because it is the easiest and most safe for the environment. If the insulating layer intend to produce with the use of fiberglass cardboard, the outer surface of such a carton in which the glass fiber facing the external environment, can be covered with glass or material Vaporbarrier (representing a composite material consisting of aluminum foil, plastic film, fiberglass yarn, and others). You can use any insulating material known in the prior art, without limitation. The thickness of the insulating layer 4 can be appropriately determined by a person skilled in the field of technology taking into account the total mass and volume of the system and other factors. The most preferred thickness of the insulating layer 4 constitute from about 15 nm to about 25 mm

Insulating layer 4 may be attached to the heating layer 1 with glue. In an alternative embodiment, insulating layer 4 may be connected to the substrate 2 or the heating layer 1 without the use of glue. For example, the insulating layer 4, the heating layer 1, the substrate 2 and the heat radiating layer 3 can be fixed in an aluminum frame that eliminates the use of glue.

The uneven surface layer 5 can be RA is substituted on the surface of the heat radiating layer 3, which is accompanied by the emission of thermal radiation. The uneven surface layer 5 is obtained by creating roughness on the surface of the radiation of heat, which is accompanied by the emission of thermal radiation, which increases the surface area, which is accompanied by the emission of thermal radiation, and increases the emissivity of the system. The uneven temperature of the surface layer is slightly less than the temperature of the heat-radiating layer 3. So while the consumer is in contact with the uneven surface layer 5, the risk of receiving no burn.

The uneven surface layer 5 may be made of mixtures, for example mixtures comprising silicon dioxide (SiO2) and calcium oxide (Cao). The uneven surface layer can be obtained by applying a supersaturated solution of a mixture of SiO2and Cao on the surface of the heat-radiating layer and removal of water by drying. The degree of supersaturation of the supersaturated aqueous solution is not particularly limited, if you saved the uniform distribution of dioxide on the surface of the heat radiating layer 3. Texture dioxide particles remains unchanged, which makes the surface system rough and increases the surface area. Thus, unevenness of the surface layer 5 increases the ut area of the external surface of the system, the result may be an increase in emissivity. The ratio of the amounts of SiO2and Cao in the supersaturated aqueous solution can be adjusted properly. With the increased emissivity and smoothness of the coating is more preferable bringing mass relations SiO2to Cao equal to 1:4.

The photocatalytic layer coating 6 can be obtained by applying a composition photocatalytic coating on teploizoljatsionnye layer 3. In an alternative embodiment of the invention the layer of photocatalytic coating 6 can be obtained by applying a composition photocatalytic coating on an uneven surface layer 5. The composition of the photocatalytic coating is transparent to thermal radiation (for example, far infrared radiation) to a degree sufficient for their penetration through the coating after curing and drying. So the effect of the photocatalytic layer coating 6 on the emissivity in the far infrared region is minimized. If the layer of photocatalytic coating 6 is too thick, it may adversely affect the emissivity in the far infrared region. With this in mind, the thickness of the coating layer is preferably from 30 to 300 m is m, more preferably from 30 to 150 microns.

The photocatalytic layer coating 6 has the same shape as the substrate, which minimizes its impact on the efficiency of the emission system of thermal radiation. For example, as shown in figure 1, the photocatalytic layer coating 6 get so, to match the irregularities of the surface layer 5, resulting in the effect of the photocatalytic layer coating 6 on the efficiency of the emission system thermal radiation is minimized. The composition of the photocatalytic coating according to the invention has a viscosity suitable for obtaining photocatalytic layer coating 6.

The size of the system corresponding to the present invention may be determined by a specialist in the art in accordance with the intended application and operating conditions. In addition, consecutive layers that make up the system, do not necessarily have the same dimensions. The dimensions of the layers composing the system, can vary, as it does not affect the functions of the layers.

The IMPLEMENTATION of the INVENTION

The present invention is illustrated in more detail with reference to the following examples. However, these examples are provided to illustrate and not limit the present invention.

EXAMPLES

Preparation is autocatalator, covered with hydroxyapatite

First prepare a solution of hydroxyapatite, simulating biological fluid by mixing Na+(213 mm), K+(7.5 mm), and CA2+(50 mm), Mg2+(1.5 mm), Cl-(147.8 mm)HCO3-(6 mm), the MIT42-(12 mm) and SO42-(0.75 mm) with water.

In solution, simulating a biological fluid, dispersible titanium dioxide and stirred for one hour at high speed. As a result, the surface of titanium dioxide uniformly deposited hydroxyapatite. After mixing hydroxyapatite left on maturing within 24 hours of obtaining titanium dioxide uniformly coated with hydroxyapatite. Titanium dioxide coated with hydroxyapatite, stabilized by heating at 200-300°C for one hour.

Titanium dioxide may be any of anatase, rutile and brookite. In this example, as the photocatalyst used titanium dioxide in the anatase (P25 from Degussa, Germany).

The preparation of the composition photocatalytic coating

An aqueous solution of titanium dioxide-coated hydroxyapatite was mixed with a binder based on alkoxide of silicon and acrylic emulsion, followed by slow stirring. Then to the mixture was added xanthan gum, which serves as a thickener, and quickly eremetical mixture to obtain a composition photocatalytic coating.

Binder-based alkoxide of silicon were prepared by dispersion of silane in alcohol, slowly adding the water dispersion under stirring and leaving the dispersion 24-48 h to hydration of the silane with the receipt of the silicon alkoxide. At this stage the water was used in the amount of 10-20 parts by weight per 100 hours of silane.

The composition of the photocatalytic coating was subjected to curing with the aim cyclization alkoxide of silicon with titanium dioxide. This cyclization led to the ideal condition in which there is only the possibility of air flow through the layer, and the supply of moisture from the external environment is prevented.

The coating compositions of the photocatalytic coating and manufacturing systems radiation heat

The composition of the photocatalytic coating was applied to the heat radiating layer 3 or uneven surface layer 5 using the application method selected from sputtering, makanya, roller and brush application. After application, the composition of the photocatalytic coating was utverjdali in the temperature range from 18 to 150°C To produce a functional system of radiation heating.

In the following demonstration tests analyzed the composition of the photocatalytic coating and the radiation of heat.

Demonstration of IP is trial

Example 1. Degradability of organic substances by irradiation of visible light

The composition of the photocatalytic coating was dried and grinded into powder. The powder was used as a sample for measuring the degree of purification from CH3SNO and NH3. The tests were carried out at the Korea Institute of construction materials (KICM), which is the official organization for testing in Korea. The results of the tests are shown in Figure 2 and 3.

1. Conditions and methods of analysis of the degree of purification from CH3SNO

1) Manufacturing of samples for analysis: 0.5 g of sample was placed on a suitable aluminum plate and dried in air for 24 h to obtain samples for analysis.

2) Conditions of the lamp irradiation at a distance of 10 cm from each sample was placed on two fluorescent lamps with three-band phosphor (PhilipsFL20SS/18 Super δO).

3) Pre-treatment of samples for analysis: the samples were not subjected to pre-treatment, however, was irradiated with UV light for 3 hours

4) research Methodology

Prepared four gas-tight package of PWP-resin volume of 5 l (Tokyo Deodorant Inc., Japan). Samples for analysis were placed in gas-tight packages. Each package has breathed in 3 l of air containing 90 ppm of CH3SNO, and hermetically sealed.

Two packages were left in the river is of the infrared radiation; the rest were left in the dark.

Concentrations of CH3SNO packages were measured using indicator tubes.

2. Conditions and methods of analysis of the purification from the NH3

Conditions and methods of analysis of the purification from the NH3were the same as for the analysis of the degree of purification from CH3SNO.

3. Results studies

The research results are summarized in Table 1.

Table 1
The irradiation of visible light (% clean)
CH3SNOCONCENTRATION (>99)*
NH39
* Note
CONCENTRATION: CH3SNO was not detected or was detected at concentrations lower than the detection limit of 0.25 ppm) after irradiation with visible light for 2 hours
>99: purification from CH3SNO was more than 99%.

Upon irradiation with visible light, the degree of purification from CH3SNO was more than 99%, and the degree of purification from the NH3- 9%. The degree of purification from the NH3turned out to be much lower than for CH3SNO. However, given the fact that the strength of the relationships between the elements forming the nitride is higher than that between what ways, forming acetaldehyde, the degree of purification from the NH3under irradiation of visible light having lower energy than UV radiation, was assessed as high.

Example 2. Degradability of organic substances by UV irradiation

The composition of the photocatalytic coating was dried and grinded into powder. The powder was used as a sample for measuring the degree of purification from CH3SNO and NH3. The tests were carried out at the Korea Institute of construction materials (KICM), which is the official organization for testing in Korea. The results of the tests are shown in Figure 4 and 5.

1. Conditions and test methods of purification from CH3SNO

1) test Method: PRKS L-002 (method Gasbag-A)

2) test Conditions

- Number and manufacturer of fluorescent lamps black light: 2, Sankyo Denki

- The manufacturer and model of the meter UV radiation: Konica Minolta (UM-IO), UD-360

The sample for testing: 0.5 g of sample was applied to an aluminum plate and dried in air for 24 h to obtain a sample for testing

- Pretreatment of samples for testing: samples were not subjected to pre-treatment, but were subjected to irradiation with UV light for 3 h

- The distance from the sample for testing to UV-lamps: 10 cm

Temperature in the laboratory: 22°C

Confirmation re the of Ulatov tests:

PRKS L-002: the Concentration of acetaldehyde within the gas-tight packages in the darkness has not changed.

2. Conditions and test methods of purification from the NH3

1) preparation of samples for testing: 0.5 g of sample were applied to the corresponding aluminum plate and dried in air for 24 h to obtain samples for testing.

2) Conditions of the lamp irradiation was installed fluorescent black light lamp (Sankyo company-denki, 20 W); the intensity of UV radiation was set equal to 1.0 mW/cm2using meter UV radiation (Konica-Minolta, UD-360).

3) Pre-treatment of samples for testing: samples were not subjected to pre-treatment, however, was irradiated with UV light for 3 hours

4) test Method

Prepared four gas-tight package of PWP-resin volume of 5 l (Tokyo Deodorant Inc., Japan). Samples for analysis were placed in gas-tight packages. Each package has breathed in 3 l of air containing 90 ppm NH3and hermetically sealed.

Two packages left in the irradiation conditions; the rest were left in the dark.

Concentrations of NH3the packages were measured using indicator tubes.

3. Test results

The results are given in Table 2.

Table 2
The irradiation of UV light (% clean)
CH3SNOCONCENTRATION (>99) *
NH3CONCENTRATION (>99)
* Note

CONCENTRATION: CH3SNO (or NH3) was not detected or was detected at concentrations lower than the detection limit of 0.25 ppm) after irradiation with visible light for 2 hours

>99: purification from CH3SNO (NH3) was more than 99%.

The values of the degree of purification from CH3SNO and NH3amounted to more than 99%.

Example 3: Study of antibacterial effect

Study of antibacterial activity was performed using Escherichia coli, Staphylococcus aureus and Salmonella typhimurium at the Korea Institute of construction materials (KICM), which is the official organization for research in Korea. The results of the study shown in Fig.6-9.

1. Conditions and methods of research

1) Conditions of the lamp irradiation at a distance of 10 cm from the samples for analysis were established by two fluorescent lamps with three-band phosphor (PhilipsFL20SS/18 Super δO).

2) After inoculation with a solution containing bacteria, brassy for analysis were subjected to fluorescent lamps within 2 hours

3) the Samples were placed in the appropriate Petri dishes and were inoculable their solution containing bacteria. Petri dishes were subjected to fluorescent lamps for 2 h and washed with buffer solution. Counted the number of remaining bacteria.

4) the names of the analyzed bacteria:

- Escherichia coli (ATCC 25922);

- Staphylococcus aureus (ATCC 6538);

- Salmonella typhimurium (IFO 14193).

5) sample Size: 5×5 cm

2. The results of the study

The results of the study are shown in Table 3.

Table 3
The strain of bacteriaInitial concentration (CFU/100 PM)Concentration after 2 h (CFU/100 PM)Antibacterial effect (Degree of destruction of bacteria, %)
Escherichia coli (ATSS 25922)2370299,9
Staphylococcus aureus (ATSS 6538)2226299,9
Salmonella typhimurium (IFO 14193)2279299,9

The values of the degree of destruction of bacteria for Eschericha coli (ATSS 25922), Staphylococcus aureus (ATSS 6538) and Salmonella typhimurium (IFO 14193) amounted to 99.9%.

Example 4. The emissivity of the radiation heat in the far infrared region and the adhesion of the photocatalyst

Studies have been conducted emissivity of radiation heat in the far infrared region. Research conducted at the Korea Institute of energy research (KIER), which is the official organization for research in Korea. The research results shown in Figure 10.

1. Conditions and methods of research

1) the emissivity of the far infrared region

The emissivity of the radiation heating and absolutely black body was determined using FT-IR spectrometer at the Korea Institute of energy research (KIER).

2) the Adhesion of the photocatalytic coating material

To the surface of the radiation heat glued adhesive tape, which was then removed. The tape was made of polypropylene/rubber had a tensile strength equal to 6.8 kg/inch (2,62 kN/m) (according to the methods of analyses ASTM D-3652 D-3652 D-3330 D-3759 D-3759).

2. Results studies

The research results are summarized in Table 4.

Table 4
The emissivity of the far infraredAdhesion activity
94,8%Tearing down is not observed

The emissivity of the radiation heat in the far infrared region was high (94,8%); exfoliation of the photocatalytic composition was not observed.

POSSIBLE AREAS of APPLICATION IN INDUSTRY.

As is clear from the above, the composition of the photocatalytic coating according to the invention has a high photocatalytic activity even in the visible region and therefore is suitable for use in products that are exposed to exploitation both outside and indoors.

In addition, separation of the photocatalyst composition of the photocatalytic coating according to the invention over time was not observed.

The system of radiation heating according to the present invention also includes a coating layer containing the composition of the photocatalytic coating that allows this system to purify the air indoors.

1. The composition of the photocatalytic coating containing from 5 to 20 wt.% photocatalyst is selected from titanium dioxide, zinc oxide, zirconium oxide, tin oxide, vanadium trioxide, and combinations thereof covered with hydro is capacitor, from 5 to 15 wt.% binder based on alkoxide of silicon, 1 to 5 wt.% acrylic emulsion, from 0.1 to 1 wt.% thickener, representing xanthan gum, and from 64 to 85 wt.% water, whereby the photocatalyst-coated hydroxyapatite, is characterized by the degree of coverage from 5 to 36%, and the average particle diameter of the photocatalyst-coated hydroxyapatite, is from 1 to 250 nm.

2. The composition according to claim 1, characterized in that the composition of the photocatalytic coating is applied to obtain the radiation of heat.

3. The system of radiation heat containing composition photocatalytic coating according to claim 1, with said system includes a heating layer 1, the substrate 2 on top of the heating layer 1 and the heat radiating layer 3 on top of the substrate 2.

4. The system according to claim 3, characterized in that the substrate 2 is a plate of stainless steel (SUS) or aluminum.

5. The system according to claim 3, characterized in that the heating layer 1 is made of at least nichrome wire covered with silicone, Teflon or glass thread.

6. The system according to claim 3, characterized in that the heat radiating layer 3 obtained by applying on a substrate 2 a mixture emitting inorganic material, 20 to 25 wt.% alkoxysilanes adhesive and 10 to 15 wt.% an alcoholic solvent and removing the solvent by drying, moreover, the emitting inorganic material consists of 6-12 wt.% TiO 2, 20-30 wt.% SiO2, 5-10 wt.% ZrO2, 5-10 wt.% Al2About3, 5-10 wt.% Fe2About3, 5-10 wt.% MnO2and 1-5 wt.% Na2O.

7. The system according to claim 3, characterized in that said system further comprises a heat-insulating layer 4 on the outer surface, the opposite surface of the heat radiating layer 3.

8. The system according to claim 7, characterized in that the insulating layer 4 is made of fiberglass, and the thickness of the specified layer is from 15 to 25 mm

9. The system according to claim 3, characterized in that said system further comprises an uneven surface layer 5 on the surface of the heat radiating layer 3.

10. The system according to claim 9, wherein the uneven surface layer 5 obtained by applying a supersaturated aqueous solution of a mixture of SiO2and Cao on the surface of the heat radiating layer 3 and the removal of water by drying.

11. The system according to claim 9 or 10, characterized in that the uneven surface layer 5 obtained by applying a supersaturated aqueous solution of a mixture of SiO2and Cao in a mass ratio of 1:4 on the surface of the heat radiating layer 3 and the removal of water by drying.

12. The system according to claim 3, characterized in that said system further comprises a layer 6 photocatalytic coating.

13. The system of item 12, wherein the thickness of the layer 6 photocatalytic coating pillar is t from 30 to 300 microns.

14. A method of obtaining a radiation heating according to claim 3, comprising the steps of applying the composition photocatalytic coating according to claim 1 on the heat radiating layer 3 and curing the surface of the heat radiating layer 3 in the temperature range from 18 to 150°C.

15. A method of obtaining a radiation heating section 12, including the steps of applying the composition photocatalytic coating according to claim 1 on an uneven surface layer 5 and curing the surface of the irregular surface layer 5 in the temperature range from 18 to 150°C.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to use of nanomaterials in wire enamel for improving thermal properties of enamel. The nanomodified wire enamels are usually used in making insulated winding wire. The polymer base of wire enamel is selected from a group comprising polyamideimide, polyester, polyesterimide, polyurethane and mixtures thereof. The nanomaterial is selected from a group comprising nano-oxides, metal nano-oxides, metal oxides or hydroxides of aluminium, tin, born, germanium, gallium, lead, transition metals, lanthanides, actinides and mixtures thereof. The nanomaterial is also selected from a group comprising nano-oxides, metal nano-oxides, metal oxides and hydroxides of aluminium, silicon, titanium, zinc, yttrium, vanadium, zirconium, nickel and mixtures thereof. After applying enamel on the wire and curing thereof, the wire exhibits improved thermal and mechanical properties.

EFFECT: improved thermal properties of enamel.

8 cl, 6 tbl

FIELD: chemistry.

SUBSTANCE: disclosed is a method of producing a dispersion of silicon dioxide particles with a modified surface, having mean diameter of not more than 100 nm, via high-pressure grinding of a pre-dispersion containing a) 10-50 wt % silicon dioxide particles with a modified surface, b) at least one glycol monoether of general formula H3C(CH2)m-O-(CH2)n-[O-(CH2)o]p-OH (A), c) at least one carboxylic ester of general formula H2x+1Cx-O-CH2-(CHR)-[O-CHR]y-O-C(=O)-CzH2z+1 (B), where the molar ratio A/B ranges from 10:90 to 40:60 and m, n, o, p, x, y and z do not depend on each other. Also disclosed is a dispersion obtained using the disclosed method, a method of producing granules of silicon dioxide particles with a modified surface by separating the liquid phase of the dispersion, granules obtained using the disclosed method and use of the dispersion and granules in coating materials.

EFFECT: disclosed dispersion and particles can be used in transparent coating compositions.

10 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to use of cyclohexane dicarboxylic acid diesters, wherein ester groups contain residues selected from a group of branched and straight substituted and unsubstituted alkyl residues, for producing coating materials for the method of coating roll or sheet metallic materials. The coating method is realised by continuously depositing onto one or both sides of a tape at least one fluid coating material and then thermally treating the layers. The coating material contains at least one said cyclohexane dicarboxylic acid diester, at least one paste-like polyvinyl chloride with mean grain diameter of 1-15 mcm and at least one extender polyvinyl chloride with mean grain diameter of 25-35 mcm. The invention also relates to production of three-dimensional moulded articles from the coated roll or sheet material, obtained by moulding from this material.

EFFECT: coated sheets, as well as their coating have improved weather resistance, particularly resistance to UV radiation.

21 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a resin paint composition for high internal permeability cationic electrodeposition and can be used as a primer coat. The composition contains a basic resin which contains products of reaction of polysulphide compounds with epoxy compounds and products of reaction of amine compounds and epoxy compounds; a resin curing agent which contains products of reaction of modified polyol compounds; aromatic sulphonic acid; and a substance which provides rheologic properties, containing a urethane functional group.

EFFECT: composition has high stability of aqueous dispersion, coating uniformity, antibacterial properties, plasticity and anticorrosion properties.

8 cl, 11 tbl

FIELD: chemistry.

SUBSTANCE: formulation composition contains: A) 5-95 wt % at least one radiation-curable resin, B) 5-25 wt % silicic acid, C) 0.1-10 wt % at least one adhesion promoter, D) 5-90 wt % at least one radiation-curable reactive diluent, E) 0.5-5 wt % at least one dispersant. The adhesion promoter is selected form phosphoric acid and/or phosphonic acid and/or products of reaction thereof with functionalised acrylates. The composition can additionally contain photoinitiators, pigments and additives, selected from diffusion promoting agents, delustering agents and degassing agents. The compositions are used as a primer, an intermediate layer, coating varnish and/or clear varnish, as well as for making coatings via a coil coating technique.

EFFECT: coatings have flexibility, thereby providing excellent protection of metal substrates from corrosion.

18 cl, 2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: additives are used in compositions which are applied on transparent panel bases, e.g., used in windows. The coating composition additive contains an agent for improving functioning of the coating composition, containing a Michael reaction siloxane product, also containing one or more active hydrogen-containing functional radicals with two or more acrylate groups and a compound containing an acid radical which is a carboxylic acid. The invention also relates to an article obtained using the following method. The base-coating method involves mixing the coating composition with said additive, depositing the mixture onto the base and adhesion of the deposited mixture. The invention relates to a coating composition which contains a resin selected from epoxy, acrylic, polyurethane or any combination thereof, a dye and said additive.

EFFECT: articles with the coating composition are characterised by prolonged use.

9 cl, 5 tbl

Pigment dispersion // 2455326

FIELD: chemistry.

SUBSTANCE: described is a method of producing an essentially aqueous pigment dispersion which is essentially free from organic binder and dispersions obtained using said method. The method involves mixing a water-soluble or water-dispersable silane compound and particles of colloidal silicon dioxide with weight ratio of silane to silicon dioxide from 0.25 to 1.5 to form particles of silanised colloidal silicon dioxide in an aqueous dispersion. Said particles of colloidal silicon dioxide are further mixed with an organic and/or inorganic pigment with weight ratio of silicon dioxide to pigment from about 0.001 to about 0.8, to form said essentially aqueous pigment dispersion. Described also is use of the disclosed pigment dispersion when applying coatings and for reducing formation of bubbles on non-absorbent substrates.

EFFECT: disclosed pigment dispersion has high resistance to flocculation and high stability over time.

20 cl, 5 tbl, 13 ex

FIELD: chemistry.

SUBSTANCE: described are novel benzotriazole UV-absorbers, having absorption spectrum shifted towards the long-wave side with considerable absorption in the region up to 410-420 nm, having general formulae (a)-(k) (structural formula and values of radicals are given in the description), composition which is stabilised with respect to UV radiation and containing novel UV-absorbers, and use of the novel compounds as UV light stabilisers for organic materials.

EFFECT: obtaining novel benzotriazole UV-absorbers, having absorption spectrum shifted towards the long-wave side.

13 cl, 23 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: coating composition has a latex component and a volatile coalescing solvent substituting agent. The agent has the formula: X(AO)nH, where X is a group from C6 to C16, selected from a group of linear chains, branched chains, aromatic rings and combinations thereof, AO is an alkyleneoxy group selected from ethyleneoxy groups, 1,2-propyleneoxy groups, 1,2-butyleneoxy groups and combinations thereof, and n varies from 3 to 14. The coating composition has content of volatile organic compounds less than or equal to 150 g/l. The volatile coalescing solvent substituting agent has little or no contribution into the total level of the volatile organic compounds in the coating composition.

EFFECT: obtaining a coating composition with high continuity and restorability, suitable low-temperature coalescence, resistance to adhesion and operational parameters in freezing and thawing conditions.

25 cl, 11 tbl

FIELD: chemistry.

SUBSTANCE: electroplating composition contains cyclic guanidine and a polymer which contains a functional group. Said polymer contains a functional group which reacts with said cyclic guanidine and said functional group includes an epoxy group. In the composition, said polymer with cyclic guanidine forms a reaction product. Said cyclic guanidine is 1,5,7-triazabicyclo[4.4.0]dec-5-ene. Use of cyclic guanidine in said composition can cut and/or completely eliminate the need for metallic catalysts such as tin and/or bismuth.

EFFECT: invention enables to form a coating which endows a substrate with corrosion resistance, wear resistance, resistance to damages caused by impact, fire resistance and heat resistance, chemical resistance, resistance to UV light and structural integrity.

67 cl, 33 ex

Lacquer coating // 2246515

FIELD: lacquer coatings, in particular metallic-type coatings.

SUBSTANCE: claimed coating is made from composition containing adhesive base and colorant. As colorant mica powder, being the waste of mica industry, coated by oxidation with iron oxide layer is used.

EFFECT: paint of improved strength and optimum optical characteristics.

FIELD: polymer production.

SUBSTANCE: production of urea-formaldehyde filler, useful as synthetic white filler in manufacture of polymers, paper, and varnish-and-paint materials, is accomplished by interaction of urea with urea-formaldehyde concentrate modified in synthesis stage with 1 to 20% of uranium derivatives and containing 54.5-59.5% formaldehyde, 21.0-24.5% urea, the rest water. Synthesis is carried out in aqueous medium in presence of phosphoric acid at elevated temperature, after which reaction mixture is neutralized with chalk/aminoalcohol/aqueous ammonia mixture [(1-4):(1-4):(1-5)]. Aminoalcohol is a product composed of 30-70% monoethanolamine, 10-50% mixture of 1-(2-hydroxyethyl)imidazol-2-ine and 1-(2-hydroxyethyl)ethylenediamine, and water (no more than 20%).

EFFECT: enhanced process efficiency and lowered oil absorption.

1 tbl, 2 ex

FIELD: highway engineering; highways structures and markings.

SUBSTANCE: the invention is pertaining to the field of highway engineering, mainly, to highways structures and markings, in particular, to photoluminescent material for the highways marking and to the highway structure. The invention presents the new photoluminescent material used for marking the highways traffic lanes. The photoluminescent material for the traffic lanes marking is made in the form of the paste containing: from 7 up to 95 mass % of the transparent polymeric component selected from the group consisting of the methacrylic acrylic component, the component of the type of non-saturated polyester, the epoxy component and the component of the silicone type, the photoluminescent colorant component with the average diameter of particles from 10 up to 2000 microns selected from the group composed of the material of the type of strontium aluminate and the material of the zinc sulfide type, and including at least one additional colorant component with the average diameter of the particles from 0.1 up to 40 microns selected from the group consisting of the white colorant, the yellow colorant and the orange or red colorant. At that the ratio of the mass of the photoluminescent colorant component and the mass of the additional colorant components makes of no more than 3.0. The invention also describes the highway structure containing the indicated photoluminescent material. The offered photoluminescent material for the traffic lanes marking possesses the required wear-resistance and resistance to the atmospheric effects, and also obtains the effective photoluminescence and may be used not only for the white lines, but also for the lines of various colors, and the covered with it lines are not slidable.

EFFECT: the invention ensures, that offered photoluminescent material for the traffic lanes marking is wear-resistant, resistant to the atmospheric effects, has the effective photoluminescence, may be used for making the white lines and the various colors lines and such lines are not slidable.

16 cl, 9 tbl, 13 ex

FIELD: varnish-and-paint industry.

SUBSTANCE: lacquer coatings with water-, oil-, and fuel-repellent properties is prepared by applying onto substrate paintwork material containing organofluoric modifier followed by curing thereof. Organofluoric modifier is selected from esters and amides of perfluoropolyether acids with molecular mass 1200-1400 and used in amounts 0.2 to 0.5% of the mass of paintwork material.

EFFECT: increased oil- and fuel-repellent properties of moisture-resistant lacquer coatings.

1 tbl, 10 ex

FIELD: varnish-and-paint industry.

SUBSTANCE: claimed biological varnish-and-paint represents filler suspension in varnish. As dyeing pigment powdered plant-original milled shell of cedar nut, or walnut, or coconut, or cobnut, or pistachio nut, or fiber nut, or milled stone of cherry, or plum, or apricot or peach.

EFFECT: varnish-and-paint with improved protective and ornamental characteristics.

1 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: new cyclic carboxylic acid is obtained in reaction which includes performing connection [J] of, at least one terpen-based diene connection (conjugate diene connection), chosen from group consisting of alloocymen, ocymen, mircen, α-terpinen and α-phellandren, and [K], at least one unsaturated carboxylic acid, chosen from α,β-unsaturated carboxylic acids and monoethers of α, β-unsaturated dicarboxylic acids. Connecting agent (A) for antifouling paint is also revealed. It containes one or more substances chosen from new cyclic carboxylic acid, derivative from cyclic carboxylic acid (excluding metal salt), metal salts of cyclic carboxylic acid and metal salts of the derivative of cyclic carboxylic acid, as well as composition of antifouling paint, which contains connecting agent (A) and copolymer (B) for antifouling paint of self-cleaning type, which is a polymerising copolymer based on basic metal salt of unsaturated carboxylic acid or polymerising unsaturated copolymer based on silyl ether of unsaturated carboxylic acid. From composition of antifouling paint covering film can be formed, which has only slight influence on environment, it is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time and can be applied to the surfaces of ships and other objects, which are used in marine territories with high risk of fouling.

EFFECT: obtaining film of antifouling paint, which has only slight influence on environment, is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time.

26 cl, 12 dwg, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to paint-and-varnish industry, in particular to method for production of alkyd-urethane enamels of various colours, and may be used to produce protective-decorating enamel coatings applied onto various substrates. Method for production of alkyd-urethane enamel is described. This method implies preparation of individual precursor components, their dosing, preparation of intermediate enamel product by combining alkyd pentaphthalic lacquer with dispersing medium, organic solvent and rheological agent, the mixture being stirred at 300-500 rpm, followed by introduction of free-flowing pigments into the mixture, together with filler, when required. Pigments and filler are pre-dispersed under stirring at a speed up to 1000 rpm until homogenous suspension is obtained. Then intermediate product is further dispersed until required degree of grinding is obtained, alkyd-urethane lacquer is added under stirring and, when required, anti-crater additive and paint dryer are added. Then, pigment tinting paste is added, the mixture is stirred to obtain homogenous suspension, and antiskinning agent is added.

EFFECT: production of alkyd-urethane enamels of various colours, with high physical and chemical properties.

10 cl, 5 tbl

FIELD: chemistry.

SUBSTANCE: invention concerns high-concentration storage-stable water dispersions of active light stabilisation substance or light stabilising and antioxidising agents mix with active substance content over 40 wt % and viscosity of 0.01-2 Pa·s, containing at least one non-ion penetration agent as disperser and polyglycol as dissolution facilitator, as well as 0.2-5 wt % of oleic acid as fluidity enhancer. Additionally the dispersions can include biocide. Also invention concerns method of storage stabilisation enhancement of water dispersions of active light stabilisation substance or light stabilising and antioxidising agents mix, involving mixing of disperser and/or other additives with oleic acid at the frist stage and adding light stabilisation substance or light stabilising and antioxidising agents mix in powder, compressed or granulated form at the second stage, with further dispersion in the presence of oleic acid, disperser and polyglycol and optional additives. In addition invention concerns application of claimed high-concentration water dispersions in obtaining varnish mass.

EFFECT: enhanced storage stability of water dispersions of light stabilisation substance or light stabilising and antioxidising agents mix.

11 cl, 28 ex

FIELD: chemistry.

SUBSTANCE: urea resin coating composition contains hollow glass and-or aluminosilicate microspheres of diametre 100-300 mcm, functional additives chosen from the group including ammonium polyphosphate, wollastonite, microcalcite in ratio of glass to aluminosilicate microspheres 1:1. Work surface coating process involves separated preparation of two reagents, one representing compound diamine reaction component A mixed with powder filling mix, containing wt %: hollow microspheres 80-85 and functional additives 15-20, and another reaction component B representing diisocyanate. It is followed with separate, but simultaneous uniform dispersion of compound component A and component B on a coated surface. Once reaching thereof, both components instantly form polymeric binding agent - urea resin with components of powder filling mix being uniformly distributed. Diamine and diisocyanate are taken in equimolar ration required to produce urea resin.

EFFECT: higher coating performance, cost reduction, simplified coating process.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to composition of pigment containing a pigment consisted of product of modified carbon, which contains carbon product having at least one bound organic group where it contains at least one ion group, one ionisable group or its mixture; and composition of dispersing agent containing anionic surface active agent, which does not solve in water at the ambient temperature with concentration more than 2% and remains solved in these conditions for more than a day; and polymer containing at least one salt of carbonic acid. The composition of dispersing agent contains anionic surface active agent and polymer containing at least one salt group of carbonic acid.

EFFECT: provision of high colour characteristics.

12 cl, 2 tbl

Up!