Biogateway composition for wood
(57) Abstract:The inventive object of the invention is the strengthening of the flame retardant properties of the composition and impart to the composition of the bioprotective properties. The composition contains the following components, wt. % : alkylphosphate 25 - 45; solvent 55 - 75. The effect of the composition based on the chemical interaction of the composition with components of wood. table 1. The invention relates to the field of wood protection and can be used in construction, woodworking industry to impart wood and articles of wood biomagnetometer properties.It is known the use of phosphites for flame retardant plastics and fibres. However, for biosecurity wood and articles of wood, they were not used. In addition, the flame retardant properties of the composition is insufficient.The closest technical solution to offer is a flame retardant composition consisting of 100 wt. including polyurethane resin, 7-10 wt. including Tris(2-chloroethylphosphonic) and 1-3 wt. including Tris(2-bromacil)phosphite.The disadvantage of this composition is its fragility, complexity, flame retardant low mass loss during combustion of wood in the standard test is 18% and bi the bioprotective properties of the composition on the basis of alkylphosphates the following formula
HO-P and HO-P
This goal is achieved by the fact that biogateway composition for wood containing alkylphosphate, as alkylphosphate contains dimethylphosphite or diethylphosphate and additionally carbon tetrachloride or perchloroethylene as a solvent in the following ratio, wt. % : Alkylphosphate 25-45 Solvent Else
The essence of the protective action is that alkylphosphate enter into a chemical reaction with components of wood (cellulose and lignin). The phosphorus content in the modified samples after extraction is from 1 to 7% .P R I m e R 1. To 25 wt. % dimethylphosphite (DMF) add 75 wt. % halogenated solvent (for example, CCl4), mixed and applied to the surface of the wood.P R I m m e R 2. To 40 wt. % DMF or diethylphosphate (DEF) add 60 wt. % solvent components are mixed and applied to the surface of the wood.P R I m e R 3. To 50 wt. % DMF or DEF add 50 wt. % galogensoderjasimi solvent, are mixed and the composition is applied to the surface of the wood.Samples treated wood proposed composition was tested by standard methods on fire - and b which contains alkylphosphate, characterized in that the composition as alkylphosphate contains dimethylphosphite or diethylphosphate and additionally carbon tetrachloride or perchloroethylene as a solvent in the following ratio, wt. % :
Dimethylphosphite or diethylphosphate 25 - 45
Carbon tetrachloride or perchlorethylene Else.
FIELD: wood materials.
SUBSTANCE: invention relates to a method for protection of wood providing to confer its hydrophobic properties for enhancing its longevity and stability of sizes. Invention describes a method for chemical treatment of lignocellulose materials, in particular, a wood lump. Indicated material is impregnated with a chemical agent containing hydrocarbon chains and this agent is chosen from mixed anhydrides containing the first hydrocarbon chain R and the second hydrocarbon chain R1 wherein R or R1 represents (C2-C4)-carboxylic acid, and R1 and R represents saturated or unsaturated (C6-C24)-fatty acid with exception mixed anhydride of acetic/benzoic acid. Indicated agent is useful for carrying out grafting based on a covalent bond in a great number of hydrocarbon chains with indicated materials. Grafting is carried out by the esterification reaction of indicated lignocellulose materials using a chemical agent chosen from organic anhydrides. Impregnation is carried out in the presence of a basic, neutral or weak acid catalyst and in the absence of catalyst also by immersion and irrigation in autoclave. Treatment is carried out at temperature from room value to 150°C but preferably from 100°C to 140°C. Also, invention describes an article based on lignocellulose fibers material, in particular, wood lump prepared by above described method. Proposed method provides preparing lignocellulose material, in particular, a wood lump with uniform fibers and smooth shape showing the absorption coefficient 3.5% and the swelling coefficient 3.5%.
EFFECT: improved method of treatment.
16 cl, 3 dwg, 3 tbl, 2 ex
SUBSTANCE: invention relates to use of alkoxylated amines to treat wood in order to improve water-repellent properties of wood or reduce the amount of water absorbed by wood. Treatment is carried out with alkoxylated amines of formula where R1 denotes C8-20-alkyl; R2 denotes -[CH2CH(X)O]bH (a-1) or n is an integer from 1 to 4; each of a, b and c independently denotes an integer ranging from 1 to 20; each X is independently selected from a group comprising hydrogen, methyl, ethyl and phenyl. Alkoxylated amines of formula (I), particularly N,N',N' -tris(2-hydroxyethyl)-N-cocoalkyl-1,3-diaminopropane or N,N',N'-tris(2-hydroxyethyl)-N-tall alkyl-1,3-diaminopropane can be used in the composition for treating wood in amount of 0.1-90 wt %.
EFFECT: use of alkoxylated amines of formula (I) to treat wood improves water-repellent properties of wood and reduces the amount of water absorbed by wood.
10 cl, 2 tbl
SUBSTANCE: invention relates to antiseptic agents for treating wood and specifically to antiseptics based on water-soluble polymers. The antiseptic consists of a mixture of dry salts and acids, with the following ratio in wt %: partial zinc salt of a polyacrylic acid 1.88-2.5; sodium salicylate 37.88-38.25; salicylic acid 20.25-25.18; citric acid 34.07-39.99, soluble in 50% aqueous solution of a quaternary ammonium salt of formula [R(CH3)2(CH2C6H5)N]+Cl-, R=C10H21-C18H37, with the following ratio of components in wt %: mixture of dry compounds 25; aqueous solution of quaternary ammonium salt 75. Working solutions with concentration of 2.0 wt % and 0.5 wt % are prepared from the obtained antiseptic solution.
EFFECT: antiseptic is more effective in treating wood compared to its counterparts.
2 tbl, 5 ex
SUBSTANCE: invention relates to wax dispersions in form of nanoparticles, used for hydrophobisation of lignocellulose- and/or cellulose-based materials. The wax dispersion contains water as a continuous phase, an emulsifying agent and wax which forms the dispersed phase. More than 85 wt % of the wax is made up of one or more long-chain hydrocarbons containing more than 20 carbon atoms on average, and the wax has hardening temperature ranging from higher than 40 to 150°C. The dispersed wax in form of solid particles has mean particle diameter from 10 to less than 500 nm. The wax dispersion is obtained by heating a mixture containing water, an emulsifying agent and wax to temperature higher than the melting point of the wax, and the molten wax is emulsified using a dispersant and then cooling to temperature lower than the hardening temperature of the dispersed wax phase. Hydrophobisation of materials is carried out by bringing said materials into contact with said wax dispersion and then pressing the material.
EFFECT: obtained wax dispersions contain a large weight ratio of a dispersed wax phase, are stable during storage and are resistant to shearing stress, provide a high hydrophobic effect compared to standard wax dispersions with the same content of wax.
23 cl, 3 tbl, 6 ex
SUBSTANCE: composition includes, at least, two components a and b. Component a) contains, at least, one mono- and/or multifunctional thiol. Component b) contains, at least, one mono- and/or multifunctional -ene. The molar ratio between the thiol and -ene groups constitutes from 1:0.9 to 1:10. Also described are: element of soaked wood; method of soaking the wooden element, including soaking wood with the said composition with further hardening.
EFFECT: increased water resistance and improved mechanical properties of wood.
13 cl, 10 tbl, 10 ex