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.

 

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