A means to protect the wood

 

(57) Abstract:

Describes a new tool to protect the wood, including an antiseptic solution, characterized in that as an antiseptic use guanidine derivative of General formula (I)

(-(CH2)6-NH-C(=OTHER)-NH-)n,

R - organic and inorganic acids;

n - molecular weight ranging from 5,000 to 100,000,

additionally contain organic solvents in the following ratio of all components, wt.%: antiseptic 0,25-2 (organic and inorganic acid), organic solvents of 0.05-2, water - the rest. The technical result is an increase bioprotective properties of biocidal products by reducing the current bactericidal concentration and time of anticipation, expansion of the spectrum of antimicrobial action against fungi and coloring wood mushrooms on the background of safe production and use. 1 C.p. f-crystals, 2 tab.

The invention relates to the protection of the timber from the mold and coloring wood fungi and can be used in timber and woodworking industry, in the construction and repair of wooden structures, storage of lumber.

Known drug Milcat A+88B /Patent Japan, 1988/- closecomponent system consisting of four compounds, has significant drawbacks, the main of which is an economic disadvantage because vysokoporistogo import.

In addition, the effectiveness of the drug were observed in 1% concentration and above the duration of anticipation 15 minutes and above. The compound is moderately toxic /III hazard class/, may cause irritation of mucous membranes of eyes, nose and skin, marked individual sensitivity to Mercato in terms of use and production.

The closest analogue of the number of known technical solutions is a means to protect the wood, including antiseptic is a derivative of guanidine and water /A. with. USSR N 1698061 A1, class B 27 K 3/34, 15.12.91/.

The tool is not effective in the field of bio reducing the current bactericidal concentration and time of anticipation, expansion of the spectrum of antimicrobial action against fungi and coloring of the wood mushrooms, on the background of safe production and use.

It is achieved by the fact that as an antiseptic use guanidine derivative of General formula

< / BR>
where R is an organic and inorganic acid;

n - molecular weight ranging from 5,000 to 100,000;

and the tool further comprises an organic solvent, which is used as derivatives of polyacrylic acid, polyethylene glycol, epichlorohydrin in the following ratio of all components, wt.%:

Antiseptic (inorganic and organic acids) - 0,25-2

Organic solvents were of 0.05-2

Water - the Rest

All the above compounds are soluble in water, no smell.

A specific example.

Wood (sawn) dipped in an antiseptic solution with a concentration of 0.5% solution. Time of anticipation - 10 minutes Experimental material was stored in airtight conditions at t=22oC wood moisture - 97% during the month. The results showed high efficiency of the investigated antiseptic against damaging wood greet and security in real conditions of its application are confirmed by the results, presented in tables 1, 2.

Activity funds against pathogenic microflora of wood are presented in table 1.

These tables show that all the proposed derivatives of guanidine (phmg) highly effective against microorganisms that infect the wood (the comparison is given with the prototype - pgmg chloride). Introduction R increases bioprotective properties derived pgmg.

It should be noted that the above toC working solution of antiseptic, vyrazennie bactericidal effect of drugs in the entire interval of wood moisture.

Table 2 presents the parameters of toxicometric derivatives pgmg in comparison with the prototype, which confirm the low toxicity of the proposed means to warm-blooded animals and humans, which ensures the safety of the use of these compounds for the purpose.

Given sufficient availability of raw materials for the synthesis and reasonable price, all the compounds can be used in woodworking industry, effectively protecting the wood from mould and staining fungi.

The optimal concentration of antiseptic is proposed footwise - uneconomic.

The means are in the 2 stage.

1. Fusion of guanidiniocarbonyl with hexamethylenediamine were;

2. Join acids.

Technical and economic efficiency.

The use of this invention will allow the use of protective drugs in low from 0.25 to 2% concentrations of antiseptic solutions at decrease the time by 5 minutes of anticipation, which gives the opportunity to increase productivity per unit of time, the effectiveness of protection of wood, to reduce the cost for 18-20% of the sawn timber and to ensure the safety in production.

1. A means to protect the wood, including antiseptic is a derivative of guanidine and water, characterized in that as an antiseptic remedy contains guanidine derivative of General formula

< / BR>
where R is an organic and inorganic acid;

n - molecular weight ranging from 5,000 to 100,000,

and optionally an organic solvent in the following ratio, wt.%:

Antiseptic - 0,25 - 2

The organic solvent is 0.05 - 2

Water - the Rest

2. Means under item 1, characterized in that as organic is the notes, the polyethylene glycol and epichlorohydrin.

 

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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

FIELD: chemistry.

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

FIELD: chemistry.

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

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