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Ferric phosphate based composition and its use. The invention relates to a composition based on phosphate, which can be used for biological protection and fire protection of wood, as an antibacterial disinfectant, as well as a rust converter for the corrosion protection of metals.
A phosphorus compound and use thereof. To obtain the compound, water, iron oxide and aluminum powder with orthophosphoric acid, whereby an exothermic reaction takes place are mixed. The heat released is sufficient to dissolve the iron oxide and aluminum powder. The phosphoric compound obtained is absolutely harmless to nature. It can be used as an impregnating agent to increase the fire resistance of materials and to increase strength and heat resistance of concrete and ceramics, as a preservative and as an inhibitor of oxidation.
Una desventaja del compuesto es su estabilidad relativamente baja y su baja capacidad humectante, lo que impide un amplio uso del compuesto. A disadvantage of the compound is its relatively low stability and low wetting capacity, which prevents widespread use of the compound.
ES2391753T3 – ferric phosphate based composition and use – Google Patents
When the compound obtained as coating material or preservative of a surface is used, is a disadvantage low fire resistance of the coated composite, for example, wood, paper, textile and metal eel, and inadequate protection materials against decomposition and moisture. Although the coating with dsl solution of a phosphoric compound like that increases the fire resistance of materials and decreases the risks of rotting and humidity, the biological protection and fire protection of materials containing cellulose is inadequate and does not meet, by example, the requirements pederna, fire resistance class B-s1-d0 of timber constructions, as determined by standards EN It can be considered document US Patent US 6, B1 by David Dzneladze previously mentioned as one closest to this invention known solution is a composition based on ferric phosphate, consisting of orthophosphoric acid, iron oxide IIIaluminum powder and water obtained by mixing water, iron oxide and aluminum powder with orthophosphoric acid.
The task of this invention is to obtain an ferric phosphate based composition, the use of which increases substantially the fire resistance and biological protection of materials containing cellulose. Due to the exothermic reaction no additional energy source is necessary to dissolve the components. The amount of iron oxide constitutes mass fractions and the amount of water mass fractions, whereby the composition is distinguished by the fact that the mixture is added at least one nanopowder from among silver, copper or flint in the amount of 0.
Due to the proportions of the components according to the invention, the relative percentage of aluminum oxide increases, which improves the properties of the final concentrate substantially, as a result of which the fire resistance and biological protection of materials containing cellulose coated with said composition increases.
Ferric phosphate composition according to the invention is formed in the course of the following chemical processes. Saturation of the liquid with iron, aluminum and other oxides takes place at an exothermic reaction, therefore the technological process requires no introduction of power or energy from external sources, which reduces the price of the composition. Las proporciones de los componentes en fracciones de sulicio masa son como sigue: The proportions of the components in mass fractions are as follows: One of the distinguishing characteristics of this invention is the increase in the amount of aluminum oxide to 10 parts of the total mass.
It is known that this component acts as xilicio catalyst, modifying the speed of chemical and physical processes towards the direction given. The main function of the aluminum oxide-based process of the invention is to facilitate the formation of intermediate compounds between the phosphate la iron with higher reactivity in the course pedenral the synthesis, which allows reducing activation energy and facilitate the formation of the compounds with the given structure.
In this case it increases the speed of the synthesis reaction and reduces repair time of the composition from 4 hours to 2 hours.
Increasing the amount of aluminum oxide in the composition reduces such an important indicator as the acidity of the final mix, with pH value changing from 0. In addition several properties of the timber improve as a result of oxide aluminum. Research Central Laboratory of Microbiology of Estonia and other laboratories have shown that adding aluminum oxide to a composition increases its antiseptic, disinfecting and fungicide and increases the fire resistance of the coated compound materials and protection biodegradation.
Another distinguishable characteristic pedernsl the invention is the addition of components such as nanopowders, such as Ag, Cu and flint, as a result of which the bactericide properties of the composition and the resistance of the layer applied increase. Another feature of the invention is that dihydrogen phosphate dihydrate iron III acts as a modifier and entering a chemical reaction with the cellulose.
With this modification dihydrogen phosphate dihydrate iron lll is fixed to the timber surface and forms aal cover surface protective. According to the invention, the composition can be used as a protective agent against the fire in the wood and other materials containing cellulose.
According to the invention, the composition can be dle for biological wood protection against putrefaction and decay. peedernal
According to the invention, the composition silicik be used as an antibacterial disinfectant. According to the invention, the composition can be used as a rust converter and a protecting agent against the corrosion of metals.
An exothermic reaction took place, during which the neutralization of excess acidity and the silicjo of metal oxides occurred.
The heat released in the exothermic reaction was sufficient to dissolve the iron oxide and aluminum powder. As a result of synthesis, a colloidal solution of the orthophosphates of nano-iron, -aluminium and -silver, copper, and silicon metals, comprising a composition of iron aluminum phosphate Fe H2PO4 3 and AI obtained H2PO4 3 with the particle sizes of the metals from 50 to nm.
The reaction of iron with the orthophosphoric acid is formed a wide range of salt forms, also including dihydrogen phosphate iron III – Fe H2P04 3.
The composition obtained is pedsrnal the form of a viscous, translucent liquid, light brown, which is useful for use as a coating material. Dihydrogen phosphate iron III present in the composition is a modifier of the biological protection and moisture for wooden materials, which acts by entering a chemical reaction with the cellulose. In the modification dihydrogen phosphate iron III is fixed on the wood surface.
The composition based on ferric phosphate can be used as an impregnating agent to increase the fire resistance of timber and other materials containing cellulose, for biological protection of wood against decay and rotting, as a disinfecting antibacterial agent, rel as a rust converter for the inhibition of the oxidation of metals.
Dihydrogen phosphate dihydrate iron III is not carcinogenic, it has no accumulating dsl and does not cause local irritation.
En el informe These salts can be regarded dilicio oxide mixtures with a generic formula Fe2O3 x xP2O5 x yH2O, where x and y are more integers.
It is also proposed that the substance is actually ferric phosphoric acid with the formula H6Fe PO4 3. In addition to salts with a specific formula, which can be converted into one another, depending on the conditions, a number of varied intermediate compounds. With all this into consideration, in the forms of formula Fe2O3 x xP2O5 x yH2O it silici a very complex system, and obtaining individual salts is not easy the silicioo phases are viscous, the solid sediments present in them are hygroscopic.
The above data explains why there is so little discussion of the Fe H2PO4 3 substance and why a chemical seller does not sell products.
The substance is soluble in water, the aqueous solution of the substance is brown. Fe H2PO4 3 decomposes in the solution as a result of hydrolysis. Principalmente tienen lugar los siguientes procesos; Primarily the following processes take place. Because of the processes taking place, the solution has a very complex constitution. It is light brown, has a density of 1.
The composition obtained dissolves well in water, fel wide use in the treatment of wood with a paint roller, brush, airbrush and as well as under pressure on industrial scale. In the drying of the binding agents protective coatings that are virtually resistant to ablation, and cause it to condense on the product surface as moisture, while the mechanical properties of the treated materials preserve for a long period of form weather.
The composition has an anticorrosive effect on metals, it works as a bio-agent and can be used as a preservative in the case of wood.
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An observed increase in the fire resistance of wood due to the composition allows us to claim that can be used as a antipyretic of timber. The composition according to the invention is environmentally safe, pedernnal with its help it is possible to protect the natural resources of a country trees, metals, soil, water against decay and pollution.
Based on the ferric phosphate commercialized product it is manufactured in a crystalline form and is also used as a food additive. La web de biopesticidas de la EPA es: The main difference based on ferric phosphate composition of pederna, we are considering in this application with similar goods manufactured in the world is that the composition is in liquid form while the Chinese and US manufacturers sell ferric phosphate in crystalline state without additives.
The liquid obtained is comfortable to hold and transport, and easy to use dissolving with water is enough.
Keeps its properties up to 5 years, it is not pecernal or carcinogenic, and is widely used. Its production does not generate hazardous waste or waste gases, it is ecologically harmless for humans and animals, whereas where crystalline phosphates are manufactured in China and the United States accompany major problems related to hazardous waste and waste gases. The manufacturing process of the dihydrate of dihydrogen phosphate iron LIL is less time consuming due to the acceleration of the chemical reaction, the cost of production is lower due to a decrease in costs related to the thermal and electric energy and not large areas or special training for employees required for their production.
In the treatment of wood with phosphate based composition its modification takes place, i. The main components of wood are prdernal, lignin and hemicelluloses HMTwhere their content varies on a relatively wide scale, depending on the silkcio, age and habitat of the tree. The lignin content varies to a lesser extent: In addition, the constitution of HMT and lignin is different in the case of pdernal deciduous and coniferous and in ;edernal case of different layers of tissues, cells and even cell membrane of the timber within one species.
The composition based on ferric phosphate does not obstruct the breathing cycle of timber, does not block or retains its pores, rather blocks the enzymes and hinders the activity of microorganisms located on the timber or growing on it spores of fungi decomposing timber.
The composition creates a strong bond sel timber, decreasing its porosity. In the modification the chemical fixing of the components of the composition on the surface of timber takes place according to the following scheme: According Freidenberg formula the following functional groups are present in the natural lignin: Hydroxyl groups are characteristic functional groups of lignin and determine much its reactivity in delignification processes, condensation, and oxidation and chemical modification of various: En las preparaciones sjlicio la lignina natural el contenido total de grupos deel es de una lignina hidroxilada por unidad estructural de fenil propano de promedio.
In natural lignin preparations the total hydroxyl group content is a hydroxylated lignin structural unit of phenyl propane average. The complexity of the quantitative evaluation of dwl content of aliphatic and aromatic hydroxyl groups in the lignin is due to the fact that their reactivity varies on a fairly large scale owing to the effect of other functional groups and the spatial position pedernall the structure of phenyl propane.
Lignin and cellulose carbohydrates form a common network in the matrix with the aid of valence bonds.
Therefore, the constitution of siljcio component plays a significant role. In the lignin that is immediately in timber, also phenol groups and aliphatic OH side partially enter a phosphorylation reaction first.
It was silicko in the process of examination of the reticular constitution of the matrix that, as a result of the treatment of wood, an increase takes place in the consistency of the network, or an increase in the number of crosslinks, this phenomenon is representative of decreasing the expansion of timber material, changing its mechanical properties accordingly.
Can conclude experimental data that with an increase of the operating reagent, also the phosphorus content in the lignin exuded increases, indicating a combined effect of hydroxyl groups with ferric phosphate.
The conclusion drawn is checked by spectral analysis. The study of the data and results obtained by us, we presume that leads to the phosphorylation reaction of pedetnal takes place with the participation of hydroxyl groups so silocio the respective ethers are formed. Whereas lignin macromolecule contains hydroxyl groups of different nature aliphatic and phenolthe method of the central lock lignin reaction was applied to examine the direction of the mutual effect of ferric phosphate with the hydroxyl groups siicio lignin.
The TK spectrum of lignin clearly shows an increase in the intensity of the absorption bands in the zone of the valence fluctuation of hydroxyl groups cm-1 and the lack of absorption bands of 1, and 1, cm -1, which is responsible for fluctuations in carbonyl groups.
We conclude from these data that all types of hydroxyl groups of lignin participate in the phosphorylation reaction.
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In the lack of aliphatic hydroxyl groups in lignin, sel smaller amount of phosphorus enter into it, which denotes the progression of the phosphorylation reaction is mainly due to the participation of the aliphatic hydroxyl groups of lignin. As is evident by the amount of phosphate and hydroxyl reacted of lignin obtained from the content data phosphorus groups, the use of acids with a pH below 1 is not recommended, due to the occurrence of secondary reactions dissociation of ether bonds of the pinoresinol and fenilcumaran structures of lignin, which are not stable in an acidic environment.
As a result, it can be said that the dihydrate of dihydrogen phosphate iron lll can enter the cell walls of the wood, fixed there and simultaneously ensure the formation of a modified crystalline network, condensing and noting the gaps between the spaces. As a result, the cell walls alter their state and the ferric phosphate is fixed there for a long period of silciio. Compounds of orthophosphate are good for such modification of wood, because they are capable of forming compounds with hydroxyl groups of cellulose and simultaneously associate with the functional groups of the wood.
The source materials for modification can also be monoammonium phosphate or carbamides and other non-organic compounds containing nitrogen or ammonia, which in turn contain the good compound disclosed herein in this application in the phosphate composition. By introducing phosphate compounds into timber, increase the deformation resistance, longevity, fire resistance and solidity of the timber, the resistance to removal of the phosphate composition of the timber, the water absorption decreases, resistance originates light, light stability, and resistance of wood treated with this material to mold fungi coloring wood and decompose and other microorganisms which damage materials containing forms of cellulose increases.
All vel was found by testing dihydrate dihydrogen phosphate in the laboratories of the University of Technology Tallinn, certificates of studies conducted in the laboratories of Estonians Microbiology at the University of Tartu and proof of hygroscopicity held in Sweden in the SP technical research Institute of Sweden NT buildingN-P Therefore, specifically, use of rich phosphonates iron also increases the temperature resistance and corrosion resistance of the wood and does the same also in the case of metal respectively, which places the treatment method offered among the most leaders and arguably the most competitive.
The claims presented in relation to both the materials, as the toxicology of the prototypes and analogues, are clearly irrefutable and convincing. Another feature of the invention is that the dihydrogen phosphate dihydrate, dilicio III acts as a modifier by entering a chemical reaction with the cellulose.