The way to protect the wood against biodeterioration

 

(57) Abstract:

The inventive wood handle oily antiseptic. As oily antiseptic take a mixture of the cubic residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oC 1.8 to 4 mm2/c (A) and oil diluent with a kinematic viscosity at 50oC 6 - 8 mm2/cm (B) at a mass ratio of a:B = 70:30, or a mixture of a,B and the product of pyrolysis of petroleum hydrocarbons with a kinematic viscosity at 50oC 15 - 22 mm2/cm (B) at a mass ratio of a:B: = 60oC90:5oC20:5oC30. The impregnation of wood with preservative is carried out at a liquid pressure of 0.8 MPa, a temperature of 70 - 80oC for 0.5 - 3 hours After impregnation spend vacuuming wood at a residual pressure of 0.085 MPa for 20 minutes the Inventive method provides 100% (sapwood) impregnation of wood. table 2.

The invention relates to a method of protecting wood against biodeterioration by impregnation of the wood with a preservative. and can be used in the woodworking industry.

There is a method of protecting wood against biodeterioration, including the following:

alrerady;

impregnation of wood oily antiseptic (coal, shale oil) liquid-phase pressure of 0.8 MPa at 90 100oC for 1 to 3 hours;

vacuuming wood at a residual pressure of 0.085 MPa for 20 min (1).

This method has the following disadvantages: a long, energy-intensive and provides a relatively small depth of impregnation, and, consequently, relatively low protection of wood against biodeterioration.

There is a method of protecting wood against biodeterioration, including the following:

vacuuming wood for 20 min at a residual pressure of 0.085 MPa;

then the impregnation of wood oily antiseptic: coal or shale oil at a liquid pressure of 0.8 MPa, a temperature of 110oC for 1 to 3 h (2).

This method is relatively energy-intensive, provides a relatively small depth of antiseptic impregnation of wood, and therefore a relatively low degree of protection of wood against biodeterioration.

The closest technical solution from a number of known technical solutions to the technical essence and the achieved result is a way to protect the wood against biodeterioration, including Slee liquid pressure of 0.8 MPa, when the temperature is 90 - 110oC for 1 to 3 hours, and then vacuum the wood at a residual pressure of 0.085 MPa for 20 min (3).

This method is relatively energy-intensive and provides a relatively low degree of protection of wood against biodeterioration due to the attainable depth of impregnation.

The technical result of the invention is to increase the degree of protection impregnated wood and the reduction of energy consumption.

The technical result is achieved in that in the method of protecting wood against biodeterioration, including the impregnation of wood oily antiseptic liquid pressure and vacuum at a residual pressure of 0.085 MPa for 20 min, the impregnation of wood oily antiseptic carried out at 70 - 80oC for 0.5 to 3 hours and as an antiseptic use a mixture of the cubic residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oC 1.8 to 4 mm2/with oil and diluent with a kinematic viscosity at 50oC 6 8 mm2/s when the mass ratio of 70:30, or a mixture of the cubic residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oC 1.8 to 4 mm2/s, product of pyrolysis netaniiskii viscosity of 6 to 8 mm2/s at a mass ratio of 60oC90:5oC30: 5oC20.

The invention is illustrated by examples 1 to 10.

As components antiseptic impregnation means according to the invention use

VAT residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oC 1.8 to 4 mm2/s received under THE 38.602-09-42-92 (samples of 2.5 table. 1) and on THE other 38.10296-88 (sample 1 table. 1);

the product of the pyrolysis of petroleum hydrocarbons with a kinematic viscosity at 50oC 15 22 mm2/s received under THE 38.1021256-89 (samples 1,2,3,5 table. 1);

oil diluent with a kinematic viscosity at 50oC 6 8 mm2/s obtained by TU 38.401-64-188-89 (sample 1 table.1) and on THE other 38.301-08-31-89 (samples 2 to 5 of table. 1).

Antiseptic treatment tool according to the invention obtain in the laboratory by mixing propeller stirrer for 5 min at ambient temperature and atmospheric pressure.

For impregnation using samples of wood with a length of 200 mm with a cross section of 60 mm x 70 mm sapwood width of 35 to 40 mm for pine and sapwood width of 8 to 10 mm for larch. Wood soaked in a laboratory autoclave.

Ends about Samples impregnating mixtures are given in table.1, it is also shown their fungicidal toxicity, defined by the standard method (GOST 16712-71) on the culture of wood-destroying fungus Coniopbora cerebella and nourishing environment "earth+wood" with the definition of the absorption threshold of P95(%).

The first stage of processing wood impregnation oily antiseptic is carried out at a liquid pressure of 0.8 MPa, a temperature of 70 80oC for 0.5 to 3 h

The second stage of the evacuation is carried out at a residual pressure of 0.085 MPa for 20 minutes

Specific modes of implementation of the method according to the examples given in table. 2, there is shown an indicator of the depth of impregnation of the wood.

The data table. 2 indicate that the proposed method is less energy-intensive, because it allows one to reduce the temperature of the impregnation operation for 20 - 30oC.

As can be seen from the presented data, the depth of impregnation of pine wood above in the examples according to the invention 1.2 2.2 times than by a known method, and for larch wood above it 2 to 3 times. The increase in the depth of impregnation of the wood increases the protection from biodeterioration. The temperature reduction process leads to the reduction of atmospheric pollution by harmful emissions losses antiseptic impregnated is about twice what to improve the performance of the equipment.

The way to protect the wood against biodeterioration, including the impregnation of wood oily antiseptic liquid pressure and vacuum at a residual pressure of 0.085 MPa for 20 min, characterized in that the impregnation of wood oily antiseptic carried out at 70 to 80oC for 0.5 to 3 h, and as an antiseptic use a mixture of the cubic residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oWith a 1.8 - 4 mm2/with oil and diluent with a kinematic viscosity at 50o6 8 mm2/s when the mass ratio of 70 to 30, or a mixture of the cubic residue of the distillation product of the alkylation of benzene with a kinematic viscosity at 50oFrom 1.8 to 4 mm2/s, product of pyrolysis of petroleum hydrocarbons with a kinematic viscosity at 50oFrom 15 to 22 mm2/with oil and diluent with a kinematic viscosity at 50o6 8 mm2/s mass ratio 80 90 5 30 5 20.

 

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(OR)x-[OSi(RR)]nO-'OR)x,

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FIELD: protection of wood, for example, protection of green lumbers, against mold and wood-coloring funguses, as well as against insects of various types.

SUBSTANCE: the agent for protection of wood contains sodium dimethyldithiocarbamate in the form of aqueous solution and additionally insecticide chlorpyrophos in the form of a hydrocarbon solution containing in mass percent: chlorpyrophos -30 to 60, aniono-active surface-active agent 1 to 10, non-ionogenic surface-active agent 1 to 10, C7-C10-aromatic solvent - the rest. At a mass ratio of the solution of sodium dimethyldithiocarbomate to the mentioned chlorpyrophos equal to 1.0:0.2 - 5.0.

EFFECT: enhanced efficiency of the agent.

2 tbl, 3 ex

FIELD: protection of wood, for example protection of green lumbers against mold and wood-coloring funguses, as well as against insects of various types.

SUBSTANCE: the agent for protection of wood contains fungicides-sodium dimethyldithiocarbomate and sodium pentaborate, wetting agent sinterol or alkylsulfonate as a quaternary ammonium base - ЛПЭ bactericide, ethylene glycol, defoamer - 2-ethylhexanol, ethylene glycol, water at the following relation of the components, mass percent: sodium pentaborate - 5 to 15, sodium dimethyldithiocarbomate 5-15, ЛПЭ bactericide, sinterol or alkylsulfonate - 5 to 15, 2-ethylhexanol - 1 to 5, ethylene glycol - 5 to 20, water - up to 100.

EFFECT: due to its balanced composition and absence of high-toxic compounds and sparingly soluble sediments, the offered agent makes it possible to enhance the biological efficiency and improve the operating properties.

2 tbl

FIELD: protection of timber and products of wood, in particular, wooden trays, that are subject to use in the sphere of production of food products and their processing.

SUBSTANCE: the wooden tray is impregnated with a protective means. The protective means represents a-solution of Sorbic acid and/or one several salts in a solvent selected from group C2-C4-alkandiol or from a mixture of water and C2-C4-alkandiol. Besides, the invention concerns the method for protection of wooden trays against fungi affection by means of impregnation by the given solution.

EFFECT: protected against undesirable affection by mold fungi, there is no risk of the fact that traces of traditional protective means of timber that are doubtful with respect to the health or odor can get onto the food products or their package.

16 cl, 1 tbl, 4 ex

FIELD: woodworking industry.

SUBSTANCE: agent, which may particularly be used to protect wet carving wood, contains, wt %: boric acid 10-25, sodium dimethyl dithiocarbamate 10-20, alkyl sulfonate 1-10, dimethylalkylbenzylammonium chloride 10-50, 2-ethylhexanol (additional component) 1-5, and ethylene glycol 5-30.

EFFECT: enhanced biological efficiency and improved working characteristics.

2 tbl

FIELD: chemical treatment of materials.

SUBSTANCE: composition for removing black deposits resulting from oxidation and fungi colonies contains liquid chlorine (65-75 g/L active Cl), saturated monoatomic alcohol with 2 or 3 carbon atoms (300-250 g/L), and water to 1 L.

EFFECT: achieved restoration of initial color of surface without degradation surface structure.

12 cl, 1 dwg, 4 ex

FIELD: wood-working, in particular, methods for protection of wood products, applicable in the furniture industry and in civil engineering.

SUBSTANCE: in the first modification the method consists in the fact that the product surface is worked by an impregnation compound containing, percent by mass: 70-80 of glycerol and 20-30 of water, at a temperature of 15 to 30C, drying in this case is accomplished at 15 to 30C, drying in this case is accomplished at 15 to 30C during 10 to 12 hours. In the second modification the method consists in the fact that the product surface is worked by an impregnation compound containing, percent by mass: 70-80 of glycerol, 5-10 of blue copperas and 15-20 of water, at a temperature of 15 to 30C, drying in this case is accomplished at 15 to 30C during 10 to 12 hours.

EFFECT: simplified method for working of wood products, enhanced weatherproofness of products, and provided bioprotection of products against batteries, fingi and attack of insects.

2 cl, 2 dwg

FIELD: woodworking industry.

SUBSTANCE: etching of wood with aqueous wood mordants includes treatment of wood with aqueous composition including at least one dye and at least one dye stabilizer of general formula I or II: (I) (II), wherein G1 and G2, independently from each other, represent C1-C4-alkyl or, jointly, pentamethylene moiety; Z1 and Z2 each represents methyl or, jointly, bridge member optionally substituted by ester residue, ether residue, hydroxyl, oxo, cyanohydrine, amido, amino, carboxyl, or urethane radical; E represents oxyl or hydroxyl; X inorganic or organic anion; and total number of cations h corresponds to total number of anions j. Use of dye stabilizers I or II for photochemical and thermal stabilization of etched wood is further described. Wood etched according to present invention meets current requirements regarding penetration, light resistance, and temperature resistance.

EFFECT: expanded wood etching possibilities.

7 cl, 27 ex

FIELD: chemical industry, applicable for treatment of wood products such as piles, supports of communication and power transmission lines, fences, posts, sleepers, bridge deck, etc.

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EFFECT: simplified procedure of production of antiseptic compound with provision of safety of the environment.

1 tbl

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