METHOD OF DETERMINATION OF AN OPTIMUM CONTENT OF THE COMPONENTS OF A SUBSTANCE INTENDED FOR BIOPROTECTION OF CONSTRUCTION STRUCTURES AND FIRE- AND BIOPROTECTION OF WOOD MATERIALS AND THE SUBSTANCE WITH THE OPTIMUM RATIO OF THE COMPONENTS Russian patent published in 2008 - IPC B27K3/50 B27K3/52 C09K21/12 

FIELD: construction engineering.

SUBSTANCE: invention relates to bio- and fire protection of the objects and is designed to prevent origination and development of biological damages, as well as to up fire resistance of construction objects and structures. A method is described to determine the optimum content of substance components and the substance for biological protection of construction objects, as well as for fire and biological protection of wood materials, the said substance containing component C₁, i.e. ether acids of phosphorous acids, component C₂, i.e. readily coking carbohydrate components, component C₃, i.e. active gas developing agent, component C₄, i.e. homogenising and interbonding component, wherein the content (percent by weight) of component C₁, ether acids of phosphorous acids, and that of component C₂, readily coking carbohydrate components are interrelated by the expression 0,053≤(α₁C₁+α₂C₂)/C₁≤2,l, where α₁ is an experimental factor selected depending upon resistance against biological damages of the object processed surface in the range of 0,051≤α₁≤l,3, α₂ is an experimental factor selected depending upon the object processed surface fire resistance in the range of 0,012≤α₂≤1,1, and the content of component C₁, i.e. ether acids of phosphorous acids, that of component C₂, i.e. readily coking carbohydrate component and that of component C₃, i.e. active gas developing agent are interrelated by the expression 0,62≤(α₁C₁+α₂C₂+βC₃)/C₁≤6,l, where β is an experimental factor selected depending upon the temperature of decomposition of the active gas developing agent in the range of 0,715≤β≤2,2. Here, the content of component C₁, i.e. ether acids of phosphorous acids, that of component C₂ readily coking carbohydrate component, that of component C₃, i.e. active gas developing agent and that of component C4, i.e. homogenizing and interbonding components taken together, do not exceed 100 percent by weight, and are selected from the expression l,7≤(α₁C₁+α₂C₂+βC₃+C₄)/(C₁+C₂)≤12, where γ is an experimental factor selected depending upon the degree of the preset homogeneity of the substance in the range of 0,93≤γ≤1,08. here, the substance as the component C₁, i.e. ether acids of phosphorous acids, contains dimethyl-phosphite, as the component C₂, i.e. readily coking carbohydrate component it contains starch and/or lignine, as the component C₃, i.e. active gas developing agent it contains dicarboxylic acid amides, as the component C4, i.e. homogenizing and interbonding component it contains water.

EFFECT: proposed substance with the optimum content of selected components improves fire and biological protection in compliance with this invention.

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