FR2474937A1 - AGENT FOR THE PRESERVATION OF WOOD AND TIMBER PARTS, LIQUID COMPOSITION FOR THE IMPREGNATION OF WOOD, OBTAINED BY DILUTION OF SAID AGENT AND METHOD FOR MANUFACTURING AN AGENT FOR THE PRESERVATION OF WOOD - Google Patents

Abstract

AGENT FOR THE PRESERVATION OF WOOD AND WOODEN PARTS AND WOOD IMPREGNATION LIQUID OBTAINED BY DILUTION OF THIS AGENT WITH WATER, CONSTITUTES 80 TO 95 BY WEIGHT OF AN INORGANIC SALT, WATER-SOLUBLE, FUNGICIDE OR INSECTICIDE AND OF 20 TO 5 BY WEIGHT OF AN ORGANIC INSECTICIDE CONCENTRATE, INSOLUBLE IN WATER AND SOLUBLE IN AN ORGANIC SOLVENT, 20 TO 60 PARTS BY WEIGHT OF AN ORGANIC SOLVENT IN WATER AND 20 TO 70 PARTS BY WEIGHT OF A NON-IONOGENIC EMULSIONER .

Description

_, _ Agent for preserving wood and wooden parts

  liquid for impregnating wood, obtained by diluting said agent and method for manufacturing an agent for preserving wood Cas DUH 79/3

DESOWAG-BAYER HOLZSCHUTZ G.m.b.H.

  The present invention relates to an agent for preserving wood and wooden parts and impregnating liquids for preserving wood, produced by diluting this agent with water, said agent for preserving wood and parts of wood consisting of 80 to 95% by weight, preferably 84 to 94%

by weight, of at least one salt or mixture of inorganic hydro-

  soluble which is fungicide and / or insecticide or wood protector and which is free from or contains hexavalent chromium compounds only in weight amounts less than 2%, and from 20 to 5% by weight, preferably 16 to 6% by weight, of a water-emulsifiable insecticide concentrate, containing 0.1 to 30 parts by weight, preferably 0.5 to 25 parts by weight, of at least one organic insecticide, insoluble in water and soluble in an organic solvent, preferably an insecticide on contact, 20 to 60 parts by weight, preferably 35 to 45 parts by weight, of at least one organic solvent insoluble in water and 20 to 70 parts by weight, preferably 30 to 50 parts by weight, of at least one

emulsifier or nonionogenic emulsifier mixture.

  There is already known a wood preservative which is produced from a liquid concentrate, the active constituents of which are insecticides and fungicides which are insoluble in water and are dissolved in a solvent and in oils, with the addition emulsifiers, so that the ready-to-use wood preservative appears as a fluid emulsion (request for

German patent DE-OS 25 18 416).

In this wood preservative, caprylates and naphthenates insoluble in water or other organic heavy metal compounds are preferably used as fungicides,

insoluble in water.

The wood preservatives described in said German patent application DE-OS 25 18 416 have the drawback that when water is added, a cloudy milky emulsion is formed which is creamed after a certain time; therefore, a uniform distribution of active agents is not obtained. The formation of a bottom deposit has also been observed in several cases. In these conditions,

there is no longer an effective impregnation of the wood.

  The object of the present invention is to provide a wood protection agent which exerts a good protective activity, which is dilutable in water and which can be used in the state of a

impregnation liquid.

Another object of the invention is to provide a wood preservative, in which the water-insoluble organic solvent, which preferably consists of petroleum-based products, aromatic products and the like and which serves to dissolve the organic insecticides, is replaced, in a significant proportion, by water, in order to significantly save the organic solvent

  or reduce the proportion used. -

We also sought to avoid or reduce segregation or the formation of a deposit during the use of the wood protection agent, which must be stable in storage, transportable and dilutable on site or at the point of sale. , up to the concentration suitable for use, by a simple addition of water. On the other hand, it should also be possible to use inorganic protective salts. However, these have the disadvantage of having to be used in relatively large quantities to provide sufficient protection against wood-destroying insects and of being effective only as

ingestion poisons.

  -3- By respecting specific weight quantities and well-defined weight ratios and compositions, the water-dilutable wood protection agent ready for use (also when in the state of an impregnating liquid ) must have the most satisfactory penetrating power in the wood. It has been found, in accordance with the invention, that these objectives are achieved by means of an agent for the preservation of wood and wooden parts and impregnating liquids for the preservation of wood produced by diluting this agent by means of of water, when the agent for preserving wood and wooden parts consists of 80 to 95% by weight, preferably 84 to 94% by weight, of at least one inorganic, water-soluble salt or mixture of salts , which is fungicide and / or insecticide or wood protector, and which is free from or contains hexavalent chromium compounds only in amounts by weight of less than 2%, and from 20 to 5% by weight, preferably 16 to 6% by weight, of a concentrated emulsifiable insecticide in water, containing 0.1 to 30 parts by weight, preferably 0.5 to 25 parts by weight, of at least one organic insecticide insoluble in water and soluble in an organic solvent, preferably an insecticide on contact, 20 to 60 parts by weight, preferably 35 to 45 parts by weight, of at least one organic solvent insoluble in water and 20 to 70 parts by weight, preferably 30 to 50 parts by weight, of at least one emulsifier or

  non-ionogenic emulsifying mixture.

  Depending on the place, the field of application and other similar circumstances, the wood protection agent according to the: i.nvention may be anhydrous or contain an additional quantity of water. To reduce the cost of transportation, it is preferred to use a wood preservative that is anhydrous or contains only small amounts of water, as a concentrate. The wood protection agent having the composition according to the invention has the advantage of making it possible to prepare, by dilution with water, an impregnation liquid which is practical for use in which the water-insoluble orgasmic solvent , which preferably consists of a -4 mineral oil or of aromatic fractions thereof or alternatively of mixtures of solvents containing mineral oil, such as white spirit and / or alkylbenzenes, and which serves to dissolve the organic insecticide, can be replaced by water in a significant proportion. In this way, we save or reduce

appreciably the proportion of organic solvent based on petroleum.

Finally, segregation or the formation of deposits is substantially avoided in the wood preservative in the concentrate state as well as in the ready-to-use impregnation liquid.

and during the application of the latter.

The inorganic, water-soluble, fungicidal and / or insecticidal or wood preservative salt or mixture of salts contains at least one salt or consists of at least one salt whose anion is a fluoride and / or a hexasilicofluoride and / or a borate and / or whose cation is copper. As salts of this kind, use is preferably made of magnesium silicofluoride, copper silicofluoride, ammonium silicofluoride, copper sulphate, sodium polyborate, sodium fluoride, ammonium fluoride and fluoride.

potassium.

  A suitable water-insoluble organic solvent consists of a low-volatility solvent having an evaporation index greater than and a flash point greater than 50C, preferably a solvent

  oily or oleaginous organic or a mixture of such solvents.

As such solvents, suitable mineral oils or their aromatic fractions or mixtures thereof can be used.

solvents containing mineral oil, preferably white-

spirit and / or alkylbenzaines, etc. According to one embodiment of the invention, the low-volatility organic solvent is entirely or partially replaced by a solubilization adjuvant consisting of one or more plasticizers. This embodiment has the advantage of further reducing the solvent content or even eliminating it completely. According to an appropriate embodiment, up to 65% by weight (relative to 100% by weight of the solvent or mixture of low-volatile organic solvents used, preferably up to 40% by weight, of the solvent or mixture low volatile organic solvents are replaced by a plasticizer or a mixture of plasticizers The following products are suitable, for example, as plasticizers: alkyl, aryl or aralkyl phthalates, preferably dibutyl, dioctyl and benzyl-butyl, alkyl phosphates or phosphoric acid esters, preferably tributyl phosphate, adipates, preferably di- (2-ethylhexyl) adipate, stearates and oleates, for example stearates alkyl or alkyl oleates, preferably butyl oleate, butyl stearate or amyl stearate, glycerin esters, glycerin ethers or glycol ethers with

high molecular weight.

The organic insecticide insoluble in water and soluble in

the organic solvent or mixture of solvents, which preferably consists of

  as an insecticide on contact, may consist of a carbamate, a phosphoric acid ester, a thiophosphoric acid ester,

  a dithiophosphoric acid ester or a thionophos- acid ester

  phoric, a chlorinated hydrocarbon, a pyrethrold and / or in endosulfane,

  or in a mixture of two or more of these compounds.

As insecticidal thionophosphoric acid esters, use is preferably made of halogenated or halogen-free insecticidal thionophosphoric acid esters of formula

S CN

  2 50 \ ll | (Hal) P-O-NsC C2H50 preferably (diethoxythiophosphoryloxyimino) -phenylacetonitrile or O- (alpha-cyanobenzylideneamino) thtonophosphate of O, O-diethyl

  and / or (diethoxy-thiophosphoryloxyimino) -2-chlorophenylacetonitrile.

It is also possible to use the phosphoric acid esters of general formula

R1 0 0

\ l -x X

R2s 1 -

R2 0 Xn -6- in which R denotes an alkyl group with 1 to 4 carbon atoms, R2 a saturated or unsaturated alkyl group with 1 to 4 carbon atoms or a group of formula

R -O-CH2CH2-

3 2 2

in which R denotes an alkyl group having 1 to 4 carbon atoms, X denotes a hydrogen or halogen atom and n the numbers 1,2 or 3

  and / or esters-imides of N- (dimethylaminomethylidene) acid -

thiol- (thiono) -phosphorique of formula

- RS X

-N = CH-N (CH3) 2

R'O in which X denotes an oxygen or sulfur atom, R 'an alkyl residue with 1 to 6 carbon atoms and R an alkyl or alkinyl residue,

  alkinyl, aralkyl, alkylthioalkyl or alkenylthioalkyl.

As chlorinated hydrocarbons, dieldrin, aldrin and lindane are preferably used. Among the pyrethroids,

preferably all1thrine, cyclethrin, fur6thrine, titra-

  methrin, resmethrin and bioresmethrin, as well as other active insecticidal agents of pyrethrum. Among the carbamates, the alkoxyphenyl N-alkylcarbamates of general formula are preferably used.

O-C-NH-R

  O-R2 and / or an alkylphenyl N-alkylcarbamate of general formula

0O-C-NH-R

  R2 formulas in which R always represents an alkyl residue with 1-4 carbon atoms, preferably a methyl residue, and R2 an alkyl residue with 1-5 carbon atoms, preferably an alkyl residue

with 3 or 4 carbon atoms.

  For the emulsifier, an ethoxylated phenol and / or an alkyl-, aryl- or arylalkylphenolethoxylate or an ethoxylated phenol containing one or more other side groups and / or an ethoxylated organic acid, preferably a nonylphenol, is advantageously used. ethoxylated and / or an ethoxylated fatty acid. According to the invention, 0.01 to 100% by weight, preferably 0.1 to 50% by weight, of the inorganic, fungicidal and / or insecticidal and / or insecticidal salt or mixture of salts can be replaced by a or more non-fungicidal and / or non-inorganic salts

insecticides.

It has surprisingly been found that, in the context of the weight ratios and compositions according to the invention, indicated above, the action of organic water-insoluble insecticides, which are preferably insecticides on contact, can be increased when one or more inorganic salts are added

non-insecticide or non-fungicide.

The non-insecticidal or non-fungicidal salts used are water-soluble salts. Sodium chloride, axmonitum chloride, potassium chloride, sodium sulfate and magnesium sulfate are preferably used. It has been noted, in this regard, that when using the liquid, the action of the mixture of salt and insecticide is greater than that of the salt or of the insecticide carried out alone and that the action of the insecticide organic insoluble in water can even be increased when simultaneously using, in the preservative according to the invention, a salt which does not have

no specific activity with regard to insects.

  According to a preferred embodiment of the present invention, the agent for the preservation of wood and wooden parts consists of 80 to 95% by weight, preferably 84 to 94% by weight, of at least one salt or mixture of inorganic, water-soluble, fungicidal and / or insecticidal salts, which is free from hexavalent chromium compounds or which contains them only in weight quantities less than 2%, and which contains at least one water-soluble salt of which l the anion is a fluoride and / or a hexasilicofluoride and / or a borate and / or the cation of which is copper, and 20 to 5% by weight, preferably 16 to 6% by weight, of an emulsifiable insecticide concentrate in the water containing 0.1 to 30 parts by weight, preferably 0.5 to 25 parts by weight, of at least one organic insecticide insoluble in water and soluble in an organic solvent, preferably an insecticide on contact, to 60 parts by weight, preferably 35 to 45 parts by weight, of at least one solvent or mixture of organic solvents anic insoluble in water, consisting of one or more low volatile solvents, preferably organic, oily or oil-based, having an evaporation index higher than 35 io and a flash point higher than 50 ° C, and 20 to 70 parts by weight, preferably 30 to 50 parts by weight of at least one non-ionogenic emulsifier or mixture of emulsifiers. The inorganic, water-soluble, fungicidal and / or insecticidal salts can be replaced by water-soluble salts having no fungicidal or insecticidal action. The inorganic insecticidal salts are preferably replaced by sodium chloride, ammonium chloride, potassium chloride, sodium sulfate and magnesium sulfate. According to another embodiment of the invention, in addition, for 100 parts by weight of inorganic salt, 0.01 to 2.5 parts by weight, preferably 0.1 to 1 part by weight, are used. a wetting agent or mixture of ionogenic wetting agents and / or

organic dyes.

  It is preferred to use the agent o the mixture of ionogenic wetting agents if organic dyes are also used. In addition, an ionogenic wetting agent is preferably used if the

work with silico-fluorides.

  For certain fields of application, it may be advisable

add to concentrate or wood preservative

  corrosion inhibitors. As inhibitors it is preferred to use

mandelic acid and / or benzotriazole.

  The wood preservative can be applied immediately as it is, for example for impregnating wood with bandages, filling drilled holes, etc. For the manufacture of the ready-to-use agent, it is preferable to dilute the wood preservative with water. The ready-to-use preservation impregnating liquid contains in addition, for 5 to 15 parts by weight of the agent, preferably for 7 to 12 parts by weight thereof, between 95 and 85 parts in weight of water, preferably 93 to 88 parts by weight of water. It is thus possible, depending on the composition, to obtain an aqueous emulsion or an aqueous mixture of emulsion and dispersion or an aqueous emulsion which appears optically clear. The invention also relates to a method of manufacturing a wood preservative and wooden parts according to the invention, according to which the insecticides or insecticide mixtures insoluble in water or liquid at room temperature, are treated in an oily or oleaginous organic solvent or mixture of solvents, not very volatile and / or in a plasticizer or mixture of plasticizers, at a temperature between 0 C and +80 C, preferably between 150C and 450C and under a pressure between 0, 5332 bar etl, 1332 bar, preferably between 0.7999 bar and 1.0532 bar, until a solution is obtained, this solution is mixed, while stirring, with a liquid comprising at least one emulsifier or mixture of non-ionogenic emulsifiers of the solvent or mixture of organic solvents, insoluble in water and optionally with water, at a temperature below 50 ° C., preferably between 15 and 45 ° C., and the resulting mixture is added to the salt or mixture of inor salts fungicide and / or insecticide or wood preservative, optionally with emulsifier or mixture

emulsifiers.

The following examples will serve to illustrate the invention,

without limiting its scope.

A - First series of examples, relating to the manufacture of the insecticide concentrate 1 - Lindane 20% by weight Solvent 40 "Nonylphenol ethoxylated with 10 ethoxy groups 40" 2 - Aldrin 20 "Solvent 40 Nonylphenolethoxylated with 10 ethoxy groups 40

- 10 -

3 - Dieldrin Solvent Dibutyl phthalate Nonylphenol ethoxylated with 10 ethoxy groups 4 - Permethrin Fine oil serving as solvent Nonylphenol ethoxylated with 10 ethoxy groups - Permethrin Fine oil serving solvent Nonylphenol ethoxylated with 10 ethoxy groups% by weight

"

"

"

I. si Il til si 6 - Decamethrin 0.5 Aliphatic hydrocarbon containing 15% aromatics, serving as solvent 59.5 "Nonylphenol ethoxylated with 10 ethoxy groups 40" 15. 7 - Decamethrin 2 "Aliphatic hydrocarbon containing 15% aromatics, serving as solvent 48 "Nonylphenol ethoxylated with 10 ethoxy groups 50" B - Second series of examples, relating to the agent for preserving the wood according to the invention 1 - Insecticide concentrate of example A1 MgSiF6. 6H20 2 - Insecticide concentrate from example A1 Commercial product based on MgSiF6 3 - Insecticide concentrate from example Ai Sodium polyborate 4 - Insecticide concentrate from example A2 HgSiF6. 6H20 - Insecticide concentrate from example A2 MgSiF 66H20 6 2 MgSO4 Wetting agent% by weight

"

8.55 0.5 If I it it t! t t!

- 11 -

  6 - Insecticide concentrate of example A2 (NH4) 2SiF6 4) 2 6 7 - Insecticide concentrate of example A2 CuS04 5H 20 8 - Insecticide concentrate of example A2 Sodium polyborate Wetting agent Color 9 - Insecticide concentrate of l 'example A2 MgSiF6.6H20 MgSO4 Wetting agent - MgSiF6 insecticide concentrate. 6H 20 11 - MgSiF6 insecticide concentrate. 620 12 Insecticide concentrate MgSiF 66H20 Ng 66 2 13 - Insecticide concentrate MgSiF6.6H 20 14 - Insecticide concentrate MgSiF6.6 20 of example A3 of example A4 of example A5 of example A6 of example A7 All the compositions of the examples were diluted to 5, 7 and 12% in order to obtain ready-to-use liquid impregnation compositions. These liquid impregnation compositions were in the form of stable emulsions of milky to opalescent appearance. C - Third series of examples The examples which follow are intended to measure

  the effectiveness of the wood preservative.

% in 89.1 0.45 0.45 8.55 0.45 weight I! l! Ir le I! tg I! f I le I 2,5 97, 5 if l * t Il il It l l!. * UOflBIU8DUOD amm el B Inas oldme aPWToasuT1 T az TssaDau aBIao anb azxnov snId apoTFad aun ua a; s & ltird el zuanboAozd apTDT; DasuT unup 5Z za slas usaxs usal uu au.sv uaau uaau uau.u slas ap suoT; nlos sae (D ua ammoD apTDTDasuT ua uoTZUuaDuoD) '9 (nuedl SUBp ZT) oz TV elqeuuoTslnnuri pzzUBauoD - 9 (nvaoI suBp Z0o) çú, çz'z aldu% spdu% 0u ainzolqD - 5 _- _ (nBasI suBp zOI) -j

mnspos ap ean.olqD -

(ZD uanb apTDTZasuT ç'g54 'uan uo lEZzuaDuoD amm) nesal suep zI IV alqvuuoTslnmu _laUaouuoD - ú (nei suep Z0O) 01 0' gZ'Z spd z% 0: T alqvuuaan slo! ap BuvBlg - Z _- (nea, 1 surp% OT) (IV alqvu -uoTslnmp axzuaDuoD np uo0zfppB sus) rg aldmaxael ap slaS ap aBsuula - T 5

% 001 0B%,

  aTsTIBlad vl inod (sainaq ua) tTessaeau sdmae * Zo00oI a% 0ç B suo5ueaeqz sap aTsXivzvd el.anboAold znod ax! essaezu sdmaz al gAalea B uo za suo5uuavqD sap; uerzod azZII; aeTdvd a eaAB; Duuoo ua sIm qp e sToq np UOTzAzasuOD ap uaetl '; Baa az yV

- zl -

- 13 -

Claims (9)

R E V E N D I C A T I 0 N S 1 - Agent for preserving wood and wooden parts and impregnating liquid for preserving wood made by diluting this agent with water, based on at least one inorganic, water-soluble salt or mixture of salts , fungicide and / or insecticide or wood protector, of at least one water-insoluble organic insecticide and of an emulsifier, characterized in that the agent for preserving wood and wooden parts consists of 95 % by weight, preferably 84 to 94% by weight, of at least one salt or mixture of inorganic, water-soluble, fungicidal and / or insecticidal or wood preservative salts, which is free from or contains no hexavalent chromium compounds -which in weight quantities of less than 2%, and 20 to 5% by weight, preferably 16 to 6% by weight, of an insecticide concentrate emulsifiable in water, containing 0.1 to 30 parts by weight , preferably 0.5 to 25 parts by weight, of at least one organic insecticide, insoluble in water and soil uble in an organic solvent, preferably an insecticide by contact, to 60 parts by weight, preferably to 45 parts by weight, of at least one organic solvent insoluble in water and 20 to 70 parts by weight, preferably to 50 parts by weight,   at least one non-ionogenic emulsifier or emulsifier mixture. 2 - Agent for the preservation of wood and wooden parts according to claim 1 characterized in that the salt or mixture of inorganic, water-soluble, fungicide and / or insecticide or wood preservative contains at least one salt or consists of minus a salt whose anion is a fluoride and / or a hexasilicofluoride and / or a borate and / or whose cation is copper. - 14 -   3 - Agent for the preservation of wood and wooden parts according to claim 1 or 2 characterized in that the organic solvent insoluble in water comprises or consists of a solvent or a mixture of solvents with low volatility having an index of evaporation greater than 35 and a flash point greater than 50 C, preferably an oily or oleoginous organic solvent or a mixture of such solvents.   4 - Agent for the conservation of wood and wooden parts according to any one of claims 1 to 3 characterized in that   that the organic insecticide insoluble in water and soluble in an organic solvent or mixture of solvents, preferably a contact insecticide, consists of a carbamate, an ester of phosphoric acid, an ester of thiophosphorous acid, an ester of dithiophosphoric acid or an ester of thionophosphoric acid, a chlorinated hydrocarbon, a pyrethrold and / or in endosulfane, or in a mixture of two or more of these compounds.   - Agent for the conservation of wood and wooden parts according to any one of claims 1 to 4 characterized in that the emulsifier is an ethoxylated phenol and / or an ethoxylated alkyl-, aryl- or arylalkylphenol or an ethoxylated phenol containing one or more other side groups and / or an ethoxylated organic acid, preferably an ethoxylated nonylphenol and / or an ethoxylated fatty acid. 6 - Agent for the conservation of wood and wooden parts   according to any one of claims 1 to 5 characterized in that   than 0.01 to 100% by weight, preferably 0.1 to 50% by weight, of the inorganic, fungicidal and / or insecticidal salt or mixture of salts   or wood protector are replaced by one or more salts. non-fungicidal and / or non-insecticidal inorganics. 7 - Agent for the conservation of wood and wooden parts according to any one of claims 1 to 6 characterized in that that it consists of - 15 -   to 95% by weight, preferably 84 to 94% by weight, of at least one inorganic, water-soluble, fungicidal and / or insecticidal salt or mixture of salts, which is free from or does not contain such compounds as hexavalent chromium only in amounts by weight of less than 2%, and which contains at least one water-soluble salt whose anion is a fluoride and / or a hexasilicofluoride and / or a borate and / or whose cation is copper, and at 5% by weight, preferably 16 to 6% by weight, of a water-emulsifiable insecticidal concentrate containing 0.1 to 30 parts by weight, preferably 0.5 to 25 parts by weight, of at least at least one organic insecticide insoluble in water and soluble in an organic chemical solvent, preferably an insecticide by contact at 60 parts by weight, preferably at 45 parts by weight, of at least one solvent or mixture of organic solvents insoluble in water, consisting of one or more low-volatility solvents with an evaporation index greater than 35 and a flash point above 50 ° C, preferably in one or more solvents or mixtures of organic, oily or oil-based solvents and at 70 parts by weight, preferably 30 to 50 parts by weight at least one emulsifier or mixture of nonionogenic emulsifiers.   8 - Agent for the conservation of wood and wooden parts according to any one of claims 1 to 7 characterized in that it contains in addition, per 100 parts by weight of salt or mixture of inorganic salts, 0.01 to 2.5 parts by weight, preferably 0.1 to 1 part by weight of an agent or mixture of agents ionogenic wetting agent and / or agent anti-foam and / or an organic dye. _ 16 -   9 - Agent for the conservation of wood and wooden parts   according to any one of claims 1 to 8 characterized in that that the ready-to-use impregnating liquid is in the form of an aqueous solution, emulsion or dispersion which contains, for to 15 parts by weight, preferably for 7 to 12 parts by weight of wood preservative, 85 parts by weight, preferably 93 to 88 parts by weight, of water. - Method for manufacturing an agent for preserving wood and wood parts according to any of the claims   1 to 9, characterized in that the insecticides or insecticide mixtures which are insoluble in water or which are liquid at room temperature are treated in the solvent or mixture of oily or oleaginous organic solvents, low volatility and / or in the plasticizer or mixture of plasticizers , at a temperature between 00C and + 80'C, preferably between C and 450C and under a pressure between 0.5332 bar and 1.1332 bar preferably between 0.7999 bar t 1.0532 bar, up to obtain a solution, this solution is mixed, while stirring, with a liquid comprising at least one emulsifier or mixture of nonionogenic emulsifiers of the solvent or mixture of organic solvents insoluble in water, at a temperature below 50 ' C preferably at a temperature between 15 and 450C, and the resulting mixture is added to the salt or mixture of salts inorganic fungicide and / or insecticide or wood protector.   11 - Use of the agent for the conservation of wood and   wooden parts according to any one of claims 1 to   9, preferably protective impregnating liquid for the wood prepared by diluting this agent with water, characterized in - 17 - what we use a technique chosen from coating, spraying, soaking or treatment techniques pressure vessel.