Wood treatment method and composition

FIELD: process for reducing of wood destruction rate by synthesizing and using non-toxic aqueous composition favorable for environment.

SUBSTANCE: method involves bringing wood into contact with aqueous alkaline colloid composition containing electrostatically charged particles of colloid-colloid silicon oxide comprising barium ions included therein, said contacting occurring under environmental temperature and pressure conditions or under elevated temperature and increased pressure conditions. Composition contains water, hydroxide of alkaline metal in an amount sufficient for bringing of water pH value to 10, silicon-containing salt, boron-containing salt, electrostatically charged particles of colloid silicon oxide, said particles containing boron ions included therein, and, optionally, aluminum halogenide and preservative. Composition is obtained by mixing components thereof. Method is provided under conditions causing production of oversaturated solution of boron-containing salt. Method allows quality of wood to be improved.

EFFECT: improved preservation of wood by increasing resistance thereof to insect, decay, ultraviolet damages, fires and other environmental effects.

43 cl, 7 dwg, 12 ex

 

Cross-reference to another application

This application claims priority based on provisional application for U.S. patent US 60, filed March 30, 2001, and is partially continuing application. Preliminary application is included here by reference. The provisional application entitled "apparatus and method of synthesis and use of preservative compositions for wood".

The technical field

The present invention relates to a method superior protection of wood by the synthesis and use of non-toxic, environmentally friendly water composition with increased in comparison with modern technology, efficiency.

Background of the invention

Protection of wood is a technology for lowering the speed of destruction of timber: 1) biological fungi, insects, nudibranchs, 2) harmful sun rays and 3) fire. Protection of wood, usually achieved by chemical treatment. Protection of wood increases the service life of wood and reduces the cost associated with frequent replacement. Appropriately constructed wooden structures serve for a long time without special protection, but large economic losses can occur when the tree is in a natural state is used when the high temperatures in structures, contact with salt water or in climatic conditions that favor the growth of harmful fungi and insects.

Typically, the means for protecting the wood used at the present time, represent oil, including oil-soluble and water-soluble chemicals. Oils are widely used for exterior applications. They have no smell in the water, but they lead to difficulties when tinting and coloring. Coal tar creosote, by itself, or 5% pentachlorophenol in oil used in the processing of products such as railway sleepers, posts, piles, walls and wooden mounts. Another commonly used solution for prepare water-based, and it contains salts of copper, chromium and arsenic (MHM).

However, protecting tools for wood, which are currently used, have several disadvantages. As the creosote, and (MHM) represent a great danger to the environment due to their significant toxicity for plants and for animals and humans. Even when the inevitable toxicity to the environment protecting these tools for wood used at the present time, are completely ineffective against a giant problem that exists in the United States of America. A quote from Time Magazine tells the story of "Termites is C hell". "Forget killer bees: termites Formoson represent a real disaster. They chew the southern part of the United States - and no one knows how to stop them." Termite Formoson is a subterranean termite that lives in East Asia. He was first admitted to the United States immediately after world war II. It is assumed that they were brought from the far East ports in the boards or packing crates on military cargo ships. The average colony home termites will eat 7 pounds of wood per year. A colony of termites Formoson eat 1000 pounds per year. They cause total expenses from 1 to 2 billion dollars in damage repair and control in the year across the United States and around 350 million dollars per year in the most affected city, new Orleans, Louisiana.

It is obvious that there should be developed an effective, less toxic to the environment means protecting the wood, which will repel termites Formoson. The present invention satisfies this need with the added advantages which will be understood upon further reading of the present application.

The invention

One aspect of the present invention is a method for lowering the speed of destruction of the wood. According to the way lead wood in contact with the aqueous mixture containing the Christmas song colloidal silica-containing salt, containing included boron ions, for a time sufficient for impregnation of this mixture at least part of the wood. Wood can be brought into contact by immersing the wood in an aqueous mixture at a pressure higher than atmospheric pressure, in a closed container or the mixture can be applied on wood by spraying or with a brush. After drying, the wood is very resistant to rot, the effects of insects and other environmental influences.

Another aspect of the present invention is a manufactured product that contains wood, impregnated silicon-containing salt, a boron salt and, optionally, a halide of aluminum. Typically, silicon-containing salt is present in the wood in the amount of from about 1% wt./wt. approximately 50% wt./wt. and boron-containing salt is present in the wood in the amount of from about 1% wt./wt. approximately 30% wt./wt. If it is present, aluminium salt will be present in amounts less than about 1% wt./wt.

Another aspect of the present invention is a colloidal composition, which contains water, an alkali metal hydroxide in sufficient quantity to bring the pH of the water, at least 10, a silicon salt, a boron salt, optional, is halogenid aluminum and optional preservative.

Another aspect of the present invention is a method of obtaining a composition suitable for reducing the speed of destruction of the wood. According to the method mix the boron-containing salt with a solution of alkali metal silicate at a pH of at least 10, optionally with the addition of a halide of aluminum and preservative, and mixed with formation of a homogeneous colloidal composition, which is supersaturated boron salt.

Brief description of drawings

For better understanding of the nature, purposes and advantages of the present invention must be made by reference to the following detailed description, read in conjunction with the following further drawings, where similar reference numbers denote similar elements.

Figure 1 is a representation of the anticipated evolution of polymer electret generator with step gradient magnetic field with ions of K+or core, stabilized with K+with insulation (scenery) boron ion and water.

Figure 2 is a view of the water, connected to a typical colloidal particle obtained by the usual methods of activation.

Figure 3 is a schematic drawing of electret generator suitable in the preparation of the compositions of the present invention.

Figure 4 the submitted is a schematic drawing of electret generator figure 3, showing three magnetic quadrupole amplifier generator and other modifications.

Figure 5 is a detailed schematic drawing of the magnetic quadrupole generator with its streams, fields and gradients.

6 is a representation of the isolation of boron ions using silicon colloid in the composition of the present invention.

Fig.7 is a view of a device for processing under pressure according to the present invention, intended for treatment of a variety of timber products.

Detailed description of the invention

Wood, because it is used for structures such as houses, roofs, fences, ship sheet railings, anchor piles, railway sleepers and the like, tends to collapse with time under the influence of many environmental influences. One aspect of the present invention is a method. to reduce the rate of destruction of the wood. The method includes bringing the wood in contact with aqueous alkaline colloidal composition of the silicon-containing salt containing ions of boron, prisoners in it, over time, sufficient for impregnation with a mixture of at least part of the wood. Preferably, the wood is put in contact by immersing the wood in an aqueous mixture at a pressure PR is exceeding atmospheric pressure, over a period of time sufficient to precipitate at least part of the silicon-containing salt and a boron-containing salt in processed wood or inside it. The method is carried out at a pressure of about 125 psi to about 175 psi, and the temperature may be equal to the ambient temperature or exceed it. The pressure is maintained for a time sufficient to impregnate the most part of wood, for example, from about 30 minutes to about 2 hours. This timber can be treated with an aqueous solution of calcium silicate to improve the results.

In the preferred process, at high pressure, the pressure is maintained for a period of time, depending on the number, porosity and length of the treated wood for wood impregnation throughout the structure. After the wood is impregnated with the composition, the wood is removed from the aqueous composition and dried to obtain a product having a silicon-containing salt and a boron-containing salt is deposited in it. Drying can be carried out at a temperature and ambient pressure or at a temperature and pressure exceeding them. If the wood is treated under pressure and dried in ambient conditions, drying may take 30 days or more. It seems that the processing of the wood under pressure, in soo is according to the present invention, silicon-containing salt and a boron-containing salt is deposited across the wood, resulting in an increase in weight, which can vary from 20 to 70%, compared to untreated wood. It is believed that the colloidal composition is pumped into the wood, possibly under the action of capillarity, and salt are deposited on the fibrous structure of the wood. The weight increase will depend on temperature, pressure, porosity of wood, size of wood, colloidal compositions and the like.

The method is carried out using an alkaline colloidal composition containing water, with a pH of at least about 10, podslashennoyi using a hydroxide of an alkali metal, silicon-containing salt, a boron salt and, optionally, a halide of aluminum. More songs will be discussed next.

Although the method of the present invention is particularly suitable for application to the immersion of the wood in the aqueous composition, wood can also be impregnated by applying the aqueous composition to the surface of the wood under pressure and ambient temperature, followed by drying. Such an application can be made by drawing with a brush, pouring the composition onto the surface of the wood, spraying the composition on it and the like. After application of the composition wood is dried and for some is the second time period, to ensure complete impregnation of wood on the surface.

Another aspect of the present invention is a manufactured product that contains wood, impregnated silicon-containing salt, a boron salt and, optionally, a halide of aluminum. The produced product silicon-containing salt is present in the wood in the amount of from about 1% wt./wt. approximately 30% wt./wt., and boron salt (for example, a metal borate or boric acid) is present in the wood in the amount of from about 1% wt./wt. approximately 30% wt./wt., when the aluminum halide is present in an amount of about 1% wt./wt. The dry weight of the product according to the present invention (manufactured by processing under pressure) will be approximately 20-70% higher than comparable untreated wood. If the product obtained by brush application or spraying, impregnation is, first and foremost, surface, and weight increase is less, is not more than 10%. The final increase will depend on a number of factors, as discussed next.

Another aspect of the present invention is a colloidal composition, which contains water, an alkali metal hydroxide in sufficient quantity to bring the pH of the water, at least 10, silicon-containing salt, boron is ol, optionally, the aluminum halide and, optionally, a preservative. Silicon-containing salt preferably be an oxide of silicon or silicate of sodium, while the boron-containing salt will be tetraborates sodium or boric acid. The composition is a combination of hydroxide of alkaline metal and silicon-containing salt, preferably a colloidal solution (or suspension) of the alkali metal silicate such as sodium silicate or potassium, or silicon oxide, dissolved in an aqueous solution of alkali metal hydroxide. The composition will be an aqueous colloidal suspension. Description of the properties of colloidal silica can be found in "The Chemistry of Silica" by Ralph K. Her, John Wiley & Sons, N.Y. (1979). Preferably the alkali metal hydroxide is a hydroxide of sodium or potassium hydroxide, particularly the latter. Mixtures thereof are also suitable. Typically, silicon-containing salt is present in amount from about 2% wt./about. to about 20% wt./about., at least about 4% wt./about., and boron salt (for example, tetraborates sodium) is present in amount from about 2% wt./about. up to 20% wt./about. The composition may include a preservative, such as trisilicate present in a stabilizing amount, and a halide of aluminum, for example try arid aluminum or aluminum TRIFLUORIDE, present in amounts up to about 1.0% wt./about. Typically, the colloidal particles will demonstrate a high Zeta potential, that is, from about -40 to -75 mV.

The method of preparation of the compositions of the present invention includes

(a) mixing the boron-containing salt with melodramatically colloidal composition of the silicon-containing salt, having a pH of at least about 10,

(b) the optional addition of a halide of aluminum and preservative and

(c) mixing to obtain a homogeneous colloidal composition, which is supersaturated with respect to boron salt.

The best silicon-containing salt occurs in nature as an oxide of silicon and is also known as silicon dioxide (SiO2). It is approximately sixty percent of the earth's crust or in free form (e.g., sand), or in combination with other oxides in the form of silicates. About silica unknown to cause any toxic effects when people are consumed in small quantities (as SiO2or as silicate), and it is regularly found in drinking water, in most public water systems across the United States. A preferred composition suitable for use in the present invention is an alkaline aqueous composition kolloidn the th of silicon oxide, which may be referred to as a solution or colloidal suspension.

The aqueous composition is prepared by dissolving particles of silicon oxide in the strongly alkaline water, which is prepared by dissolving a strong base in water to obtain an aqueous solution, which is the basic (i.e. pH greater than 7, preferably at least 10). As a rule, a strong Foundation will be a sodium hydroxide or potassium hydroxide, preferably the latter. The molar amount of at least 3, typically, will be used for the preparation of the alkaline solution, in this case, as a rule, is not required molar quantity greater than 4. Because the solubility (its ability to form stable colloidal composition) of silicon oxide increases with increasing temperature, it is preferable that the alkaline solution was heated to a temperature exceeding the ambient temperature to the boiling point of the solution and including her. Though can be used temperature exceeding this temperature, as a rule, it is not preferred because of the need to create a container of high pressure. Upon the dissolution of the silica in water is made alkaline with sodium hydroxide, it is believed that formed the sodium silicate solution. The composition will change is based on different relations between sodium and silicon oxide, for example, density. The greater the ratio of Na2O to SiO2the more alkalinity and adhesion of mortar. Alternatively, the same result can be achieved by dissolving solid sodium silicate in water. Numerous aqueous colloidal composition of sodium silicate is commercially available, with content from about 20% to about 50% wt./about. A well-known solution known as "egg preservative, which can be prepared using this method and, according to the calculations, contains about 40% of the mass of Na2Si3O7(widely available dry form of sodium silicate). Standard commercially available sodium silicate contains 27% wt./about. sodium silicate.

Not wanting to contact any particular theory, it is assumed that the chemistry of dissolution can be approximately described by the following equations.

This is discussed further in the book Iler, above.

After preparation of the composition alkaline colloidal silica boron-containing salt, such as boric acid or a metal borate such as sodium borate, i.e. tetraborates sodium, add to the mixture, preferably in the form of finely ground powder. The as is, that the addition of boron-containing salt promotes the formation of stable colloidal composition containing ions of boron included in the colloidal structure. In addition, can also be added to the aluminum halide and a preservative. Adding an ion source In+++, preservative, such as trisilicate, and aluminum halide may cause polymerization of Si(OH)4as shown below

It is believed that this leads to the formation of colloidal particles, in which ions In+++are sequestered, as shown in figure 1. It should be noted that figure 1 is used, the alkali may be potassium hydroxide, which supplies ions of K+together with TCC. It is believed that the colloid of this composition is more strongly related and more extensive than the well-known colloidal systems. In addition, it is believed that figure 2 is a view of a typical double layer water, on a typical colloidal particle of silicon oxide.

In this method, the boron-containing salt preferably is tetraborates sodium, i.e. sodium borate, also known as biborate sodium and under other names, with the formula Na2B4About7. He is often in the form of decahydrate.

After preparing the aqueous compositions according to nastasemarian preferably it further treated to obtain a supersaturated solution of salt of boron. Preferably the composition is treated to increase the electrostatic charge on the particles. During the preparation of compositions of the present invention is important to maintain the temperature above the ambient temperature to maintain the solubility of the salts. After the composition passes through the electret generator to achieve a higher Zeta potential, the composition is stabilized. This is done by use of the generator, shown in figure 3 and 4. Additional details can be found in the application for U.S. patent No. 09/749243, Holcomb, registered on December 26, 2000, and published as US 2001/0027219, 4 October 2001, and in U.S. patent No. 5537363, Holcomb, issued July 16, 1996, the description of which is included here as a reference in their entirety. Dimensions and volumes in these publications are used here for illustration only and are not limiting. The function generator includes a pump (1)which selects the composition (5) according to the present invention, which is contained in the means (3) hold, and it flows through passage (2) and through the pump (1). The pump (1) generates a speed which depends on the size of the pump and passes. It can be 1-100 gallons per minute (Gal/min). In smaller systems, it is possible to see a thread from 4 to 10 Gal/min and a pressure of 20 pounds per square du is m Fluid at a given pressure and velocity, flows through the passage (6) and enters the means (7) transfer. The fluid flows through the tool (7) transfer in and out through the holes (8) in the means (13) of the transfer, then the fluid flows in the opposite direction, and then exits through holes (9) and again changes the direction of flow through funds (14) transfer. The fluid leaves the means (14) migrate through the holes (10), arrives in means (15) transfer this fluid enters the chamber (11) and actually leaves the generator through the passage (12), and is transferred back to the means (5) retention through the passage (4A) and (4b).

Figure 4 illustrates the functioning and location of the magnetic amplifier nodes of the generator together with the "off line" means (22) for chemical mixing and retention. Continuous flow, high velocity fluid flow through the device according to the present invention is to produce a colloid of the present invention due to the effect of counter-current charging, which generates multiple magnetic fields, in both directions, which generate electrostatic charge on moving near a charged colloidal particle moving in a countercurrent process. If you are adding a magnetic amplifier nodes, in figure 4, the electrostatic charge is created on the colloid much faster. To the Yes device 4 are used fully the valve (17) of the passage (4A) is closed and the valve (16) of the passage (18) is open, and valve (20), pass (19) is also open. The flow passes through the passage (4b) in the passage (18), means holding (22)that can be added chemicals from the boot device (29) for chemicals that are loaded through the passage (30) and (31). Means (22) holding the chemicals are heated using an electric heater (21), which is fed through the wire (25) and stirred using a paddle stirrer (23), through the actuator (24), which rotates with pulley (26), driven by a belt (33) on the pulley (27), driven by a motor (28). The heated fluid with the dissolved chemicals pumped through the pump (32)through the passage (19) in the passage (4) and back, means (5) hold.

As can be seen from figure 5, in the pipeline there are many gradients along the z-axis, these gradients also exist along the axes x and y. The effect of multiple gradients is responsible for electrostatic charge that is generated on the particle when the generator continuously processes the material. The upper part of figure 5 illustrates a top view, in cross-section, concentric passages depicted in figure 4. As can be seen in figure 5, the magnetic amplifier node (e.g. node A) contains a number of magnets (e.g., electromagnets). Here is obrieni four magnet located in the plane, and they are in this plane form the vertices of the quadrangular shape (e.g. a rectangle or square). Poles of adjacent magnets have opposite orientation, as indicated by means of signs "+" and "-"shown in figure 5. As shown in the lower part of figure 5, this system of four magnets creates multiple magnetic field gradients along the z-axis (i.e. the component of the magnetic field along the axis coming out of the plane, depicted in the upper part of figure 5). Here is the measurement for the magnetic field along the z axis, along the line a-a', which is about one inch above the plane of the magnets. There may also be a gradient magnetic field along the x-axis and the y-axis (i.e. the component of the magnetic field along lines a-a' and b'). These multiple gradients are responsible for a significant electrostatic charge, which can be formed on the colloidal particle of silicon oxide, when the generator continuously processes the aqueous composition. By treating the aqueous composition with the help of the generator shown in figure 4, it is possible to obtain colloidal particles of silicon oxide having a size in the range from about 1 micron to about 200 microns, typically in the range of from about 1 micron to about 150 microns, or from about 1 μm to about 110 μm. Colloidal particles of silicon oxide may have Zeta potentials, within approximately -5 millivolts (mV) to more than about -75 mV, and typically in the range from about -30 mV to about -40 and up to -75 mV. As understood by the person skilled in the art, the Zeta potential is the electrostatic charge, demonstrating a colloidal particle and a Zeta potential of greater magnitude, as a rule, corresponds to a more stable colloid system (e.g., the repulsion between particles).

Example 1

This example describes a method of obtaining typical compositions of the present invention.

In detail the preparation of the composition can be depicted with reference to figure 5. The original solution is added to the means (5) hold. The solution contains 1846,2 ml 26,0% of sodium silicate with an amount of water sufficient to bring the volume up to 6500 ml of the Solution circulating through the generator with a closed valve (16) and valve (20), but with an open valve (17). 500 grams of pellets of KOH is added slowly to the solution in a running generator. Perform circulation composition for 30 minutes at 60°C. 2 liters of solution poured into the compartment (22), opening the valve (16) and closing valve (17). When 2 liters of flow in means (22) hold, the valve (20) is opened and 800 grams of trisalicylate added slowly to the solution in the means (22) hold, through the loading device (29) for chemical the EB, and stirred with a paddle stirrer (23) and shaft (24), to dissolve. 1000 g tetraborate sodium (sodium tetraborate decahydrate) are added to a solution through a boot device (29) for chemicals. Tetraborates sodium is dissolved by stirring with a blade stirrer (21) on the actuator (24). The generator runs for 1 hour. Add an additional 1000 grams tetraborate sodium and circulation to carry until they are dissolved. The temperature of the support at 60°C. the Generator runs for 1 hour, and a third portion, tetraborate of sodium in 1000 grams add, mix and perform its circulation up until it is dissolved. Add 10 grams AlF3and passed through the generator within one hour to a final pH to 10.8. The composition is Packed by closing the valve (16) and valve (17), and pumping the solution from the means (22) hold, with a pump (32), means (5) hold, through the passage (4).

Example 2

This example describes a method according to the present invention for processing wood under pressure. Referring to Fig.7, lumber (56), which must be processed, is placed in a chamber (54) high-pressure and sealed with doors (55). Valves (58) and (64) are closed. Valve (68) is opened, and vacuum n the SOS (67) is fed through a supply (19V) power. In one of the embodiments of the system vacuum pump (67) is a 26-inch vacuum pump. However, the vacuum pump may be a vacuum pump of any size, such as 30-inch vacuum pump.

Vacuum pump (67) pumps out the camera (54) for removing gases, which are contained in the fibers of the wood. Vacuum selects gases from the ends of the wood. Thus, the amount of time necessary to maintain the vacuum in the chamber (54), depends on the number, type and length of wood, which is treated. For example, for a small amount of wood vacuum can be maintained within 15 minutes, and for a large number of wood or a long piece of wood vacuum can be maintained for 45 minutes. Then the valve (58) is opened, and the composition of the present invention (for example, 6% SiO2and 8% boron salts, ions of boron) is pumped out of the means (62) for holding and/or means (66) is stored in the camera (4), and then into the wood. The composition passes from the means (66) storage means (62) holding through the passageway (55). The composition passes from the means (62) holding the camera (54) through the passages (57) and (60). Before introduction into the chamber (54) composition can pass through the boiler (59). Boiler (59) can be any type of heating element, capable of maintaining the temperature of the composition is, when it circulates in the system.

In an alternative embodiment, before the flow of the composition into the chamber for processing SILENE® (calcium silicate) mixed with water at a low concentration (for example, 11/2%) SILENE, and the wood is treated using a composition SILENE and compositions of the present invention.

After filling of the chamber (54) preservative and immersing the wood in a preservative system is exposed under increasing pressure.

In one embodiments the method is applied to the system fluid pressure. In this embodiment pumped vacuum valve (68) is closed, the valve (58) is open and the pump (P) include to increase the pressure in the liquid. When the chamber is filled with fluid from the means (62) hold, through the passage (60), boiler (59) and the passage (57), (pass (57) to move toward the open end of the chamber), the pump (P) continues to operate, the valve (64) is partially open. This partial restriction will maintain the pressure in the tank, while still making possible the circulation. The whole system can be equipped with sensors for pH and TDS (total dissolved salts), so that could be added to the solution, if necessary. The whole system can be controlled by the computer.

In one of the embodiments of the fluid pressure is maintained at about 150 pounds n the square inch and the temperature is maintained at about 140° F during the period of time between 30 minutes and 2 hours. However, in another embodiment may use other values of pressure, temperature and time.

In another embodiment of the system to the applied gas pressure. In this embodiment, the circulation system is under the action of the pump (P), creating pressure. Pressure is applied through the container (51) with CO2through the passage (53) and the valve (69) to the camera (4) for wood processing. The composition, which at high pH is a colloid with small size particles, under the action of CO2partially converted to a gel. It is believed that this lowers the pH on the surface of the wood. Pressure is applied to the system for about 30 minutes to about 2 hours. The amount of time when pressure is applied to the system depends on the number, type and length of the treated wood.

After the stage of application of the pressure chamber is pumped out. The treated wood is then removed from the chamber (54) and give it a chance to dry during the time period of approximately 30 days.

The formulation of the composition can be changed for better penetration. Boric acid can replace tetraborates sodium (sodium tetraborate decahydrate), if you are using boric acid, the amount by weight is by 1.22 is more, than tetraborate sodium.

Example 3

This composition of the present invention is intended for application by brush or spray on the floor or timber.

1. 1200 ml of 4 M HCl is added to 5300 ml of distilled H2Oh, and placed in the generator.

2. The tank slowly add 800 mg solution trisalicylate. Circulation is carried out for 30 minutes.

3. Dissolve 1000 grams tetraborate sodium (sodium tetraborate decahydrate) in 1846,2 ml of a 26% sodium silicate. Add 500 g of KOH to dissolve, if required, and add 200 g of NaOH. Heated to 200°F for dissolution.

4. In the generator slowly add a portion of the solution tetraborate sodium/sodium silicate within one hour or up to establish a pH of 7.6 and add 10 grams AlF3. Continue to add tetraborates sodium/sodium silicate at 46,3°until then, until it reaches a pH of 10.76.

5. Add 1000 ml of the above solution in a container with constant stirring, at pH 11,33 and T 22,2°C. Titrated with HCl 1:3 (use 150 ml of HCl × 150 ml) and slowly add 4 liters of the above solution for processing pressure to 4 liters of this solution (example 2), and mix. This solution is transparent and it penetrates into the wood.

Cornered 4

In this example, the above-described composition(example 3) according to the present invention is combined with a sealer for wood. In one of the embodiments of the sealer for wood represents 10% of the active mixture Silene (calcium silicate)mixed with anhydrous alcohol. Sprayed composition (example 3) is applied to the overlap, and leave to dry for 3-4 hours. Then the overlap of the applied sealer for wood. The sealer for wood chemically interacts with the processed overlap by reaction with the oxide of silicon. The result is a treated lumber with a water-repellent sealer.

Example 5

Another embodiment of the present invention has the advantage of synthesis of a saturated solution of 21% tetraborate sodium and 21% SiO2. The solution is very viscous. It is heated and mixed with fibers of any type, and dried under a press with heated rollers with obtaining very durable and fire-resistant sheet of construction material. All products are processed using the present invention, are fireproof.

Example 6

Pieces of wood, 2 inches × 4 inch southern yellow pine and light oak, similar size, is treated under pressure in accordance with the present invention. Assess immediate weight increase and weight increase after 1 month.

The immediate increase in mass

Pine 44,8%

Oak 34,4%

Uvelicheniya one month

Pine 22,5%

Oak 22,25%

Example 7

In this example of the present invention are compositions which can be used for spraying on the wooden ceiling. The composition may be obtained using the following procedures.

A. Preparation of solution A.

1) electret generator for inorganic polymer (see, for example, the patent application U.S. 09/749243, registered on December 26, 2000) add 431,340 liter 4 N. HCl to 1905,085 liters of N2About and provide circulation within 30 minutes.

2) In the tank of the generator slowly add 287,560 kg trisalicylate and provide circulation within 30 minutes.

3) Dissolve 202,185 kg tetraborate sodium 995,425 liters 27% NaSiO4. To the solution add 101,095 kg KOH to dissolve tetraborate sodium. Add 38 kg NaOH and heat the solution up to 220°F. After dissolution only tetraborate sodium add two additional quantities 202,185 kg tetraborate sodium, one at a time, dissolving in General 606,455 kg tetraborate sodium.

4) In the generator slowly for 1/2 hour, add a solution tetraborate sodium/sodium silicate.

5) In the tank of the generator slowly add 3,594 kg AlF3and provide circulation within one hour.

C. preparation of the solution C.

1) 673,491 liters 27% of the mass is ilicate sodium, NaSiO4add to the number of N2O, sufficient to obtain 2556,680 liter of solution.

2) Slowly add 394,72 kg of pellets CON.

3) for 30 minutes to carry out circulation in electret generator, as described above.

4) Of the capacity of the generator pumped 789,44 liters. Transfer in a heated tank at 200°F. Stirred 222,03 kg of NaOH pellets, continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) Of the capacity of the generator pumped 1184,2 liters and transferred into a heated tank at 200°F. Add 18,872 NaOH pellets slowly dissolve 333,056 kg of boric acid, mix. Add 57 kg of pellets of NaOH and stirred until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and return to the generator, perform circulation within 10 minutes.

8) Carry out recycling #6, above, back to the generator and provide circulation within 10 minutes.

9) Of the capacity of the generator pumping 1200 gallons and transferred into a heated tank at 200°F. Add 38,25 kg of NaOH pellets slowly dissolve 263,25 kg of boric acid. Add the number of additional NaOH sufficient to dissolve the boric acid.

10) Add 1200 liter is in #9, above, back to the generator, and process for 10 minutes.

11) Of the capacity of the generator pumped 600 liters and dissolve 3,947 kg AlF3and add back to the generator, together with the number of N2O, sufficient for 3000 liters. Within 30 minutes exercise circulation and placed in the container.

C. Preparation of the final product.

1) alternator add to 1500 liters of solution In and slowly titrated during 15 minutes, 1500 liters of solution, and treated within 15 minutes

The composition obtained using this procedure contains silicon oxide (probably in the form of sodium silicate), present in an amount of about 6 wt.%, calculated from known relationships wt./about., and contains tetraborates sodium (in the form of boron ions)present in an amount of about 4.5 wt.%, calculated from known relationships wt./about. The composition obtained using this procedure, has a pH equal to about 10.

Example 8

In this example of the present invention are compositions which can be used for spraying on the wooden floor, which is treated with CCA. The composition may be obtained using the following procedure.

A. Preparation of solution A.

1) Add 431,34 liter 4 N. HCl to 1905,085 liter of H2O electret generator for reorganizes the first polymer and provide circulation within 30 minutes.

2) In the tank of the generator slowly add 287,560 kg trisalicylate and provide circulation within 30 minutes.

3) In 1659,042 liters 27% NaSiO4dissolve 89,860 kg tetraborate sodium. To the solution add 44,931 kg KOH to dissolve tetraborate sodium. Add 16,888 kg NaOH and heat the solution up to 200°f. To the solution add two additional separate aliquots for 89,860 kg tetraborate sodium and dissolve each aliquot separately.

4) In the generator slowly over1/2hours, add a solution tetraborate sodium/sodium silicate.

5) In the tank of the generator slowly add 3,594 kg AlF3and provide circulation within one hour.

C. preparation of the solution C.

1) Add 1122,484 liters of 27 wt.% NaSiO4, sodium silicate, together with the number of H2O, sufficient to obtain 2556,680 liter of solution.

2) Slowly add 175,431 kg of pellets CON.

3) Provide circulation within 30 minutes in electret generator, as above.

4) Of the capacity of the generator pumped 789,44 liters. Transfer in a heated tank at 200°F. Stir in 98,679 kg of boric acid together with 33,353 kg of NaOH pellets, continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) From emotionality pumped 1184,2 liters and transferred into a heated tank at 200° F. Add 8,379 kg of NaOH pellets slowly dissolve 147,877 kg of boric acid, mix and add 25,308 kg of NaOH pellets. Stir until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and return to the generator, perform circulation within 10 minutes.

8) Provides recycling #6, above, back to the generator, and provide circulation within 10 minutes.

9) Of the capacity of the generator pumping 1200 gallons and transferred into a heated tank at 200°F. Add 16,983 kg of NaOH pellets slowly dissolve 196,83 kg of boric acid. Add additional amounts of NaOH sufficient to dissolve the boric acid.

10) Add 1200 litres #9, above, back to the generator and process for 10 minutes.

11) Of the capacity of the generator pumped 600 liters and dissolve 3,947 kg AlF3and add back to the generator together with the number of N2About enough for 3000 liters. Provide circulation within 30 minutes.

C. Preparation of the final product.

1) alternator add to 1500 liters of solution In and slowly titrated within 15 minutes 1500 liters of solution A, and process for 15 minutes

The composition obtained using this procedure contains silicon oxide, is present at about 10 mA is.%, calculated by the well-known relationship weight/volume, and contains a borate ion, present in about 2 wt.%, calculated by the well-known relationship weight/volume. The composition obtained using this procedure, has a pH equal to approximately 10,4 about to 10.6.

Example 9

In this example of the present invention are compositions which can be used for treatment of wood under pressure. This composition ensures that the wood is termite resistant. The composition may be obtained using the following procedure.

1) Add 897,988 liters of 27 wt.% NaSiO4together with the number of N2About enough for 2556,68 liter of solution.

2) Slowly add 197,360 kg of pellets of KOH with stirring.

3) Provide circulation within 30 minutes in electret generator, as above.

4) Of the capacity of the generator pumped 592,1 liters and transferred into a heated tank at 200°F. Stirred 197,360 kg of boric acid together with 66,708 kg of NaOH pellets. Continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) Of the capacity of the generator pumped 592,1 liters and transferred into a heated tank at 200°F. Add 16,776 kg of NaOH pellets slowly dissolve 296,05 kg of boric acid. Mix and dobavlaut,00 kg of NaOH pellets or mix until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and return to the generator, perform circulation within 10 minutes.

8) Carry out recycling #6, above, back to the generator and provide circulation within 10 minutes.

9) Of the capacity of the generator pumped 600 liters and transferred into a heated tank at 200°F. Add 34 kg of NaOH pellets slowly dissolve 234 kg of boric acid. Add the number of additional NaOH sufficient to dissolve the boric acid.

10) Add 600 gallons of #9, above, back to the generator and process for 10 minutes.

11) Pump out 600 liters of capacity of the generator and dissolve 3,947 kg AlF3and add back to the generator together, if necessary, with the number of N2O, sufficient for 3000 liters of solution. Provide circulation within 30 minutes.

The composition obtained using this procedure contains silicon oxide, present in an amount of about 8 wt.%, calculated by the well-known relationship weight/volume, and the level of borate ion to about 4 wt.%, calculated by the well-known relationship weight/volume. The composition obtained using this procedure has a pH of about 10.5 to about 11,5.

Example 10

In this example of the present invention have the comp the stand, which can be used to handle working under pressure beams, such as railway sleepers and structural racks and rack enclosures used in the marine environment. The composition may be obtained using the following procedure.

1) Add 1122,485 liters of 27 wt.% NaSiO4together with the number of N2About enough for 2556,68 liter of solution.

2) Slowly add 394,72 kg of pellets of KOH with stirring.

3) Provide circulation within 30 minutes in electret generator, as described above.

4) Of the capacity of the generator pumped 986,6 liters. Transfer in a heated tank at 200°F. Stirred 493,4 kg of boric acid together with 166,77 kg of NaOH pellets. Continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) Of the capacity of the generator pumped 1480,25 liters and transferred into a heated tank at 200°F. Add 41,9375 kg of NaOH pellets slowly dissolve 740,125 kg of boric acid. Mix and add 125,00 kg of NaOH pellets or mix until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and returns to the generator, perform circulation within 10 minutes.

8) Carry out recircu is aciu #6, above, back to the generator and provide circulation within 10 minutes.

9) Of the capacity of the generator pumping 1500 gallons and transferred into a heated vessel at 200°F. Add 85 kg of NaOH pellets slowly dissolve 585,0 kg of boric acid. Add additional amounts of NaOH sufficient to dissolve the boric acid.

10) Add 1500 liters #9, above, back to the generator and process for 10 minutes.

11) Of the capacity of the generator pump out 1000 liters and dissolve 3,947 kg AlF3and add back to the generator together, if necessary, with the number of N2O, sufficient for 3000 liters of solution, and provide circulation within 30 minutes.

The composition obtained using this procedure contains silicon oxide, present in an amount of about 10 wt.%, calculated by the well-known relationship weight/volume, and borate ions are present in an amount of about 10 wt.%, calculated by the well-known relationship weight/volume. The composition obtained by this method has a pH of about 10.5 or above.

Example 11

In this example of the present invention are compositions which can be used for treatment of wood under pressure. This composition provides a high barrier to the penetration of termites in wood. The composition may be obtained using the m following procedure.

1) Add 897,988 liters of 27 wt.% NaSiO4together with the number of N2About enough for 2556,68 liter of solution.

2) Slowly add 394,72 kg of pellets of KOH with stirring.

3) Provide circulation within 30 minutes, electret generator, as above.

4) Of the capacity of the generator pumped 789,44 liters. Transfer to a heated vessel at 200°F. Stirred 394,72 kg of boric acid together with 133,416 kg of NaOH pellets, continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) Of the capacity of the generator pumped 1184,2 liters and is transferred to heat at 200°F. Add 33,55 kg of NaOH pellets slowly dissolve 592,10 kg of boric acid, mix and add 100,00 kg of NaOH pellets or mix until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and return to the generator, perform circulation within 10 minutes.

8) Carry out the circulation of #6 above, back to the generator and provide circulation within 10 minutes.

9) Of the capacity of the generator pumping 1200 gallons and transferred into a heated tank at 200°F. Add 68 kg of NaOH pellets slowly dissolve 468,00 kg of boric acid. Add an additional amount of NaOH, the sufficiency of the full-time to dissolve the boric acid.

10) Add 1200 litres #9, above, back to the generator and process for 10 minutes.

11) Of the capacity of the generator pumped 600 liters and dissolve 3,947 kg AlF3and add back to the generator together with a quantity of water sufficient to obtain 3000 liters of solution. Provide circulation within 30 minutes.

The composition obtained using this procedure contains silicon oxide, present in an amount of about 8 wt.%, calculated by the well-known relationship weight/volume, and the level of borate ions to about 8 wt.%, calculated by the well-known relations of mass/volume. The composition obtained using this procedure has a pH of about 10.5 or above.

Example 12

In this example, the present invention is a composition that can be sprayed on the wood to help protect the wood from termites. The composition may be obtained using the following procedure.

A. Preparation of solution A.

1) Add 431/340 liter 4 N. HCl to 1905,085 liters of N2O electret generator for inorganic polymer and provide circulation within 30 minutes.

2) In the tank of the generator slowly add 287,560 kg trisalicylate and provide circulation within 30 minutes.

3) For three times dissolved 359,44 kg tetraborate sodium 663,617 liters 27% NaSiO4. To rest the Roux add 179,725 kg KOH to dissolve tetraborate sodium. Add 71,890 kg NaOH and heat the solution up to 200°F.

4) In the generator slowly over1/2hours, add a solution tetraborate sodium/sodium silicate.

5) In the tank of the generator slowly add 3,594 kg AlF3and provide circulation within one hour.

C. preparation of the solution C.

1) Add 448,994 liters of 27 wt.% NaSiO4together with the number of N2About enough for 2556,68 liter of solution.

2) Slowly add 394,72 kg of pellets CON.

3) Provide circulation within 30 minutes, electret generator, as above.

4) Of the capacity of the generator pumped 789,44 liters. Transfer in a heated tank at 200°F. Stirred 394,72 kg of boric acid together with 133,416 kg of NaOH pellets, continue to heat and stir until transparent.

5) Return to the generator and provide circulation within 30 minutes.

6) Of the capacity of the generator pumped 1184,2 liters and transferred into a heated tank at 200°F. Add 33,55 kg of NaOH pellets slowly dissolve 592,10 kg of boric acid, mix and add 100,00 kg of NaOH pellets or mix until transparent.

7) Add 315 kg trisalicylate to 300 litres, pumped out from the tank of the generator, mix to dissolve and return to the generator, perform circulation within 10 minutes.

<> 8) circulates #6, above, back to the generator, and provide circulation within 10 minutes.

9) Of the capacity of the generator pumping 1200 gallons and transferred into a heated tank at 200°F. Add 68 kg of NaOH pellets slowly dissolve 468,00 kg of boric acid. Add additional amounts of NaOH sufficient to dissolve the boric acid.

10) Add 1200 litres #9, above, back to the generator and process s for 10 minutes.

11) Of the capacity of the generator pumped 600 liters and dissolve 3,947 kg AlF3and add back to the generator together with the number of N2About enough for 3000 liters of solution. Provide circulation within 30 minutes.

C. Preparation of the final product.

In the generator add 1500 liters of solution In and slowly titrated within 15 minutes 1500 liters of a solution and process for 15 minutes. The composition obtained using this procedure contains silicon oxide, present in an amount of about 4 wt.%, calculated by the well-known relationship weight/volume, and the level of borate ions to about 8 wt.%, calculated by the well-known relationship weight/volume. The composition obtained using this procedure, has a pH equal to about 10.2 or higher.

1. A method of reducing the rate of destruction of the wood, providing reduction of the wood, in the context of the act with aqueous alkaline colloidal composition, which contains electrostatically charged particles of colloidal silica containing ions of boron included in it, in a period of time sufficient for impregnation composition, at least part of the wood.

2. The method according to claim 1, where the wood is brought into contact by immersing the wood in the composition at a pressure higher than atmospheric pressure, in a closed container.

3. The method according to claim 1 where the colloidal particles exhibit a Zeta potential equal to -40 to -75 mV.

4. The method according to claim 2, where the pressure is generated by increasing the speed of flow of the composition in the container, thus reducing the rate of outflow from the container.

5. The method according to claim 2, where the pressure is about 125 psi to about 175 psi, and it is obtained using fluid pressure.

6. The method according to claim 5, where the pressure is maintained for from about 30 minutes to about 2 hours

7. The method according to claim 6, where the weight of dry wood is increased by a factor of 20 to 70%, compared with the original weight of wood before processing.

8. The method according to claim 1, where after impregnation of wood composition, wood removed from contact with the aqueous composition and dried, obtaining a product containing silicon-containing salt and a boron-containing salt, and besieged it.

9. The method according to claim 1, where the composition was prepared using water, brought hydroxide selecing the metal to pH, equal to at least 10, silicon oxide, a metal borate or boric acid, and optionally, a halide of aluminum.

10. The method according to claim 9, where the composition was prepared using water containing sodium hydroxide or potassium hydroxide to make the pH is from 10 to 11, 2 to 20% wt./about. oxide of silicon, about 2-20% wt./about. boron salts and, optionally, a halide of aluminum.

11. The method according to claim 1, where the composition was prepared using water containing the molar concentration of sodium hydroxide or potassium hydroxide, from about 3 to about 4, from 2 to 20% wt./about. silica in the form of silicate, 2 to 20% wt./about. tetraborate sodium, 0.1 to 1% wt./about. the aluminum halide and a stabilizing amount of tripotassium citrate.

12. The method according to claim 10, where the water contains potassium hydroxide.

13. The method according to claim 1, where the wood is brought into contact by applying the composition to the surface of the wood, at ambient pressure, with subsequent drying.

14. The method according to item 13, where the composition is applied with a brush.

15. The method according to item 13, where the composition is applied by spraying.

16. The method of claim 8, where the wood is dried for at least 30 days in ambient conditions, after treatment at high pressure.

17. The method according to claim 2, where the method further includes introduction to the contact of the wood with an aqueous solution of calcium silicate.

8. Product that contains wood, impregnated silicon-containing salt, a boron salt and, optionally, a halide of aluminum, where the impregnation is carried out by spray or brush application aqueous alkaline colloidal the composition, which contains electrostatically charged particles of colloidal silica containing ions of boron included in it and, optionally, a halide of aluminum.

19. Product by p, where the silicon-containing salt is present in the wood in an amount of from 1% wt./wt. approximately 30% wt./the Mac and the boron-containing salt is present in the wood in an amount of from 1 to 30% wt./wt.

20. Product by p, where the mass of the dry impregnated wood is greater, from 20 to 70%than comparable untreated wood.

21. The product according to claim 20, where the impregnated wood is soaked essentially throughout the wood structure.

22. Product by p, where the wood is impregnated on the surface of the wood.

23. Product by p, where colloidal particles exhibit a Zeta potential equal to -40 to -75 mV.

24. Colloidal composition for wood containing water, alkali metal hydroxide in sufficient quantity to bring the pH of the water at least up to 10 derived from silicon-containing salt and boron salts and containing electrostatically charged particles of colloidal oxide, PU glue, which I containing ions of boron included in it, and, optionally, a halide of aluminum, and optionally, a preservative.

25. The composition according to paragraph 24, where the alkali metal hydroxide is a hydroxide of sodium or potassium hydroxide.

26. The composition according to paragraph 24, where the alkali metal hydroxide is a hydroxide of potassium.

27. The composition according to paragraph 24, where the silicon-containing salt is present in an amount of from 2% wt./about. to about 20% wt./about.

28. The composition according to item 27, where the silicon-containing salt is present in amount of at least about 4% wt./about.

29. The composition according to item 27, where the boron-containing salt is present in an amount of from 2 to 20% wt./about.

30. The composition according to paragraph 24, where the preservative is a tripotassium citrate.

31. The composition according to paragraph 24, where the aluminum halide is trichloride aluminum or aluminum TRIFLUORIDE is present in an amount up to 1.0% wt./about.

32. Composition according to any one of p-31, where colloidal particles exhibit a Zeta potential equal to -40 to -75 mV.

33. A method of obtaining a composition for lowering the speed of destruction of wood, including

(a) mixing the boron-containing salt with an alkaline colloidal composition of the silicon-containing salt comprising electrostatically charged particles of colloidal silica at pH of at least 10,

(b) optional add recipients is of the aluminum halide and preservative and

(c) mixing to form a homogeneous colloidal composition, supersaturated boron salt.

34. The method according to p, where the pH adjusted to 10 with potassium hydroxide or sodium hydroxide.

35. The method according to clause 34, where the pH is at least 10, installed with the use of potassium hydroxide.

36. The method according to p, where the boron-containing salt is tetraborates sodium.

37. The method according to p, where the silicon-containing salt is present in an amount of from 2 to 20% wt./about.

38. The method according to clause 37, where the silicon-containing salt is present in amount of at least 4% wt./volume.

39. The method according to p, where the boron-containing salt is present in an amount of from 2% wt./about. up to 20% wt./about.

40. The method according to p, where the preservative is a tripotassium citrate.

41. The method according to p, where the aluminum halide is trichloride aluminum present in an amount up to 1.0% wt./about.

42. The method according to any of PP-41, which is carried out under conditions that produce colloidal particles of the composition, which Express the Zeta potential equal to -40 to -75 mV.

43. The method according to any of PP-42, where the colloidal composition flows countercurrent manner through a magnetic field for a time sufficient to obtain the Zeta potential of colloidal particles from -40 to -75 mV.



 

Same patents:

FIELD: special cover materials.

SUBSTANCE: invention relates to a method for preparing anticorrosive, refractory and heat-insulating cover and its using. The composition comprises the following components, wt-%: sodium or potassium water glass, 4.5-95.0; mixture of hollow microspheres as a filler, 4.5-95.0; non-ionogenic surface-active substance, 0.5-20.0; swollen vermiculite or asbestos fibers as reinforcing filler, 0.0-50.0, and titanium dioxide, 0.0-20.0. Hole microspheres are chosen from the group comprising hollow polymeric microspheres, hollow technogenous microspheres or mixtures of microspheres. Microspheres are taken in limits of their sizes from 10 to 500 mcm with the filled value in limits from 50 to 650 kg/m3. Invention provides enhancing the anticorrosive resistance, refractory and heat-insulating stability, and to simplify technology for making the cover.

EFFECT: improved preparing method, improved and valuable technical properties of cover.

2 cl, 2 tbl, 4 ex

Silicate paint // 2272820

FIELD: building materials industry; production of silicate paint of special composition.

SUBSTANCE: the invention is pertaining to the field of building materials industry, in particular, to the composition of the silicate paint for deposition of protective and the decorative coatings intended for staining, for example, of brick, concrete and plastered external and internal surfaces, protection of metal against oxidation and timber against putrefaction and fire. The paint contains the following components ratio (in mass %): 35.0-65.0 - modified liquid glass, 15.0-45.0 - quartz-containing component, 3.0-23.0 - talcum, 3.0-30.0 - transient oxide of s2 element, 0.1-2.0 - sodium tripolyphosphate as a deflocculant, 0.01-5.0 - organic modifying agent - a copolymer, 0.001-2.5 - cellulose ether as thixotropic additive agent. As the liquid glass they use sodium glass, ammonium glass, lithium glass, potassium glass, sodium-potassium glass modified by polyorganohydridesiloxane. As the organic modifying agent- copolymer they use acrylate copolymer, or butadiene-styrene copolymer, or vinylacetate copolymer. The silicate paint may contain pigments in quantity of 0.5-15.0 mass %. The invention ensures an increased viability and storage duration of the paint, reduction of its value at keeping high parameters of its breaking away capacity, strength of adhesion, water resistance, frost-resistance and required viscosity.

EFFECT: the invention ensures an increased viability and storage duration of the paint, reduction of its value at keeping high parameters of its breaking away capacity, strength of adhesion, water resistance, frost-resistance and required viscosity.

2 cl, 2 tbl

FIELD: protective materials.

SUBSTANCE: invention relates to a method for preparing priming coat for steel that is designated for assembly and applying upper coat. Steel in grounded with priming coat comprising a silicon dioxide-base binding substance containing silicon dioxide aqueous sol stabilized with aluminum oxide and, optionally, small amount of alkaline metal silicate. Indicated binding agent shows the mole ratio SiO2/M2O = at least 6:1 wherein M means the total amount of alkaline metal ions and ammonium ions. After drying the priming coat up to disappearance of stickiness in weal touch by a finger it is treated optionally with a solution that enhances the strength of the priming coat film.

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12 cl, 7 tbl, 21 ex

FIELD: production of refractory paints (molded and non-molded) at roasting temperature up to 1550°C; marking articles before and after heat treatment.

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3 ex

Flameproof coating // 2265631

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1 tbl

FIELD: chemical engineering.

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2 ex

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4 cl, 2 tbl, 19 ex

Heat protective dye // 2245350

FIELD: chemical industry, paint-vehicle systems, in particular heat protective dyes.

SUBSTANCE: claimed dye contains ceramic and corundum microspheres; resins, selected from group including silicone resin, polyesterepoxy resin, acrylic resin dispersions as binder; pigment; and aluminum powder as deflector. Such composition provides reduced heat loss into environment. Obtained dyes have thermal gradient, improved heat-retention properties and strength, and useful in corrosion and heat-loss protection of building construction, transport, gas and oil lines, heating systems, etc.

EFFECT: easier method for dye production; strength and homogenous heat protective dye layer of improved adhesiveness.

2 cl, 3 tbl

The invention relates to heat engineering and can be used to protect spacecraft and launchable objects (from mechanical damage or overheating) both in space and entry into the dense layers of the atmosphere

The invention relates to construction materials and can be used for protective and decorative coatings for building structures with interior and exterior finish of buildings and structures

FIELD: methods for production of fire-retardants for fireproofing treatment of wood materials, applicable in production of fireproof laminated products.

SUBSTANCE: the method is accomplished by interaction of carbamide-formaldehyde concentrate of the following composition, percent by mass: carbamide-21-25; formaldehyde - 54-60; water - the rest with ammonia liquor taken in equimolar relation in formaldehyde and ammonia, at heating in a weak-alkaline medium in the presence of amino alcohol added together with ammonia liquor (0.01-0.2 percent by mass) taking into consideration the carbamide-formaldehyde concentrate with a subsequent introduction of the first portion of carbamide (0.1-10 percent by mass) for 100 percent by mass of carbamide-formaldehyde concentrate, cooling, neutralization of the reaction mixture by ortho-phosphoric acid up to pH=6.0-8.0 and subsequent introduction of the second portion of carbamide (0.1-20 percent by mass), nonionogenic surface-active agent (0.01-0.1 percent by mass), potassium bichromate (0.1-1.5 percent by mass) for 100 percent by mass of carbamide-formaldehyde concentrate.

EFFECT: optimized conditions of synthesis of fire-retardants with preservation of their fireproofing efficiency at a high level.

2 ex, 1 tbl

FIELD: chemical industry, applicable for treatment of wood products such as piles, supports of communication and power transmission lines, fences, posts, sleepers, bridge deck, etc.

SUBSTANCE: anticeptic for wood is obtained on the basis of sovtol, sovtol is processed to paste with simultaneous decontamination of it by successive treatment by reagents - oleum and triethanolamine - at a molar relation of sovtol to reagents of 1:2:3, respectively, before treatment sovtol is heated at agitation to a temperature of 80 to 150C, in the process of treatment of sovtol by oleum heating to a temperature of 180 to 250C is accomplished at agitation during 12 to 14 hours and subsequent cooling down to 70 to 100C, after that treatment by triethanolamine is accomplished up to the completion of the process of neutralization. The obtained paste is used in the form of at least 5-% aqueous solution.

EFFECT: simplified procedure of production of antiseptic compound with provision of safety of the environment.

1 tbl

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to methods for synthesis of antipyrenes used in fireproofing wood materials. Method for synthesis of antipyrenes is carried out by mixing two components one of that - amidophosphate is synthesized by interaction of carbamidoformaldehyde concentrate comprising, wt.-%: carbamide, 21-25; formaldehyde, 54-60, and water, the balance, with ammonia water taken in equimolar ratio with respect to formaldehyde and ammonia, at heating in weakly alkaline medium, in the presence of aminoalcohol chosen from the group comprising monoethanolamine, diethanolamine, triethanolamine, amine modifying agent AM-1 adding in common with ammonia water in the amount 0.01-0.3 wt.-% as measured for carbamidoformaldehyde concentrate followed by addition of 1-10 wt.-% of carbamide as measured for 100 wt.-% of carbamidoformaldehyde concentrate, cooling and neutralization of the reaction mixture with ortho-phosphoric acid to pH 6.0-8.0, and the second component - an aqueous dispersion of acrylic or vinyl acetate polymers. Invention provides optimization conditions for synthesis of antipyrenes with simultaneous retention of their high effectiveness after contact of water with wood.

EFFECT: improved method of synthesis.

1 tbl, 6 ex

FIELD: production of antipyrines, applicable in wood-working industry, as well as in building at carrying-out of preventive maintenance measures in fireproofing of products made of dry wood.

SUBSTANCE: the method consists in mixing of alumochromophosphate, non-ionogenic surface-active agent and polyamine, preliminarily neutralized by ortho-phosphoric acid to pH 6.0-8.0, used as polyamine is the aqueous solution of a product of general formula: , where: n=0.1 and m=0.1 at the following mass relation of components: alumochromophosphate: non-ionogenic surface-active agent: polyamine equal to (20-90):(0.01-0.5):(10-80).

EFFECT: produced wood materials of the first group of fireproofing efficiency at reduced consumption of antipyrine.

4 ex, 1 tbl

FIELD: methods of production of antipyrines for fireproof treatment of wood materials.

SUBSTANCE: proposed method includes interaction of carbamide formaldehyde concentrate of the following composition, mass-%: carbamide, 21-25; formaldehyde, 54-60; the remainder being water with ammonia water taken at equimolar ratio by formaldehyde and ammonia at heating in weak-alkaline medium in presence of aminoalcohol selected from group containing mono-ethanol amine, di-ethanol amine, tri-ethanol amine and amine modifying agent AM-1 added together with ammonia water in the amount of 0.01-0.3 mass-% in terms of carbamide formaldehyde concentrate followed by introduction of carbamide in the amount of 1-10 mass-% per 100 mass-% of carbamide formaldehyde concentrate; then, reaction mixture is cooled and neutralized with ortho-phosphoric acid to pH= 6.0-8.0.

EFFECT: optimization of synthesis process of antipyrines at retained fire resistance efficiency.

1 tbl, 2 ex

FIELD: methods of production of antipyrines; woodworking industry; production of fire-resistant plate products; construction engineering.

SUBSTANCE: proposed method includes interaction of carbamide formaldehyde concentrate of the following composition, mass-%: carbamide, 21-25; formaldehyde, 54-60; the remainder being water with ammonia water taken at equimolar ratio formaldehyde and ammonia at heating in weak-alkaline medium in presence of aminoalcohol selected from group containing mono-ethanol amine, di-ethanol amine, tri-ethanol amine, amine modifying agent AM-1 or their mixtures added together with ammonia water in the amount of 0.01-0.02 mass-% per 100 mass-% of carbamide formaldehyde concentrate at subsequent introduction of 1-10 mass-% of carbamide per 100 mass-% of carbamide formaldehyde concentrate, cooling, neutralization of reaction mixture by orthophosphoric acid to pH=6.0-8.0 and introduction of 0.1-0.5 mass-% of sodium fluosilicate and 0.1-0.8 mass-% of potassium bichromate into synthesized product.

EFFECT: optimization of synthesis of antipyrines at enhanced fire resistance efficiency.

1 tbl, 2 ex

FIELD: wood-working, in particular, methods for protection of wood products, applicable in the furniture industry and in civil engineering.

SUBSTANCE: in the first modification the method consists in the fact that the product surface is worked by an impregnation compound containing, percent by mass: 70-80 of glycerol and 20-30 of water, at a temperature of 15 to 30C, drying in this case is accomplished at 15 to 30C, drying in this case is accomplished at 15 to 30C during 10 to 12 hours. In the second modification the method consists in the fact that the product surface is worked by an impregnation compound containing, percent by mass: 70-80 of glycerol, 5-10 of blue copperas and 15-20 of water, at a temperature of 15 to 30C, drying in this case is accomplished at 15 to 30C during 10 to 12 hours.

EFFECT: simplified method for working of wood products, enhanced weatherproofness of products, and provided bioprotection of products against batteries, fingi and attack of insects.

2 cl, 2 dwg

FIELD: protective agents for wood.

SUBSTANCE: low-temperature protective agent for wood with bioprotective and fireproofing effect represents an aqueous-alcoholic solution of o-phosphoric acid and silver nitrate in the following ratio of components, wt.-%: o-phosphoric acid, 10-20; silver nitrate, 0.0001-0.0005; aqueous-alcoholic solution, the balance. Low-temperature protective agent for wood can be used in treatment of wood and wood articles at positive, moderate and low temperatures and possesses good wettability and penetrating ability into wood and provides bioprotection and fireproofing.

EFFECT: valuable properties of agent.

3 tbl, 2 ex

FIELD: woodworking industry.

SUBSTANCE: low-temperature wood protection agent with bio- and moisture-protection effect represents alcohol-water solution of phenol-formaldehyde resin supplemented by iron sulfate and potassium sulfate, in particular containing, wt %: ethanol (as anhydrous) 42.4-62.4, resin 10-20, iron sulfate 0.05-0.10, potassium bromide 0.05-0.10, and water - the balance.

EFFECT: extended efficiency temperature range, improved moistening and wood-impregnation abilities, achieved prevention of impregnated wood from moisture absorption, lack of washout, and imparted biological protection.

2 ex

FIELD: chemical treatment of materials.

SUBSTANCE: composition for removing black deposits resulting from oxidation and fungi colonies contains liquid chlorine (65-75 g/L active Cl), saturated monoatomic alcohol with 2 or 3 carbon atoms (300-250 g/L), and water to 1 L.

EFFECT: achieved restoration of initial color of surface without degradation surface structure.

12 cl, 1 dwg, 4 ex

FIELD: pesticides, chemical technology.

SUBSTANCE: invention describes a method for preparing copper-containing liquid pesticide. Method involves formation of a hardened water-soluble complex copper-borate, its grinding to form granules and dissolving granules in water to obtain liquid pesticide comprising the copper concentration at least 0.20% but not above 1.00 wt.-%. Also, invention describes liquid pesticide prepared by indicated method and a set comprising granules of hardened water-soluble complex copper-borate and letter instructions for preparing the liquid pesticide. Method provides remaining copper in solution in dissolving the hardened complex copper-borate in water.

EFFECT: improved preparing method.

4 cl, 1 dwg

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