FI73619B - TRAESKYDDSMEDELKONCENTRAT OCH DAERAV FRAMSTAELLT MEDEL FOER KONSERVERING AV TRAE OCH TRAEMATERIAL. - Google Patents

Description

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Wood preservative concentrate and substance prepared therefrom for impregnation of wood and wood Träskyddsmedelkoncentrat och därav framställt medel för canering av trä och trämaterial

The invention relates to a wood preservative concentrate and a substance prepared therefrom for impregnating wood and wood material, which contain certain amounts of at least one organic, water-insoluble insecticide and / or at least one organic, water-insoluble and / or organic, water-soluble fungicide combined with certain amounts of water-soluble (calculated as solids) and at least one plasticizer and / or at least one water-insoluble organic solvent containing hydroxyl groups and / or ether groups, at least one non-ionic emulsifier or emulsifier mixture and as a pH or chemical compound acting as a buffer, possibly water.

A wood preservative is already known which is prepared from a liquid concentrate, the active ingredients of which are water-insoluble insecticides and fungicides dissolved in a solvent and oils by adding emulsifiers so that the finished wood preservative is in the form of an easy-to-use emulsion (cf. DE application). 416). Caprylates and naphthenates are preferably used as fungicides in this wood impregnating agent.

Such wood preservatives according to DE-A-25 18 416 have the disadvantage that the addition of water forms a milky turbid emulsion which separates after a certain time and in which the active ingredients are thus not evenly distributed. In many cases, bottom sediment can be detected. In these cases, the wood cannot be effectively impregnated.

2,73619 GB patent 1,253,542 discloses a wood preservative which, within certain limits, is dilutable with water. However, the reference publication refers to a ready-to-use wood preservative without artificial resin binder, which has the advantage in particular of its reduced flash sensitivity when sprayed. The reference preservative contains an insecticide and a fungicide, an organic solvent, water and an emulsifier. The substance does not contain chemical compounds that act as a buffer material or pH adjusters. This known wood preservative does not comprise a water-dilutable synthetic resin and therefore has a lower stability than the substance according to the invention. The use of a known substance does not result in sufficient fixation in the wood, in which case there is a risk of waxing.

The wood preservative according to the GB patent publication also has the disadvantages in terms of its composition and use which were mentioned above in connection with the DE patent publication 25 18 416.

It is an object of the invention to provide a wood impregnating agent in which an organic, water-insoluble solvent based on petroleum products, aromatics and the like can be replaced by up to a considerable percentage by other organic substances and / or water so as to largely dispense with: petroleum products , based on aromatics or the like. solvent or vast, its proportion can be reduced. Degradation or bottom precipitation must be largely eliminated when handling the wood impregnating agent. Finally, the wood impregnating agent should be very effective. It should be in the form of seals, durable, transportable and dilutable at the point of use or point of sale to a finished concentration by simply adding water. By adhering to the specified weight amounts and the prescribed weight ratios and compositions, the ready-to-use water-based wood preservative should achieve the best possible penetration depth in the wood.

According to the invention, it has been found that wood preservative concentrates and substances made therefrom for impregnating wood and wood meet these requirements when they are based on 3,73619 water-insoluble insecticide or insecticide mixture and / or water-insoluble or water-soluble fungicide or fungicide mixture and emulsifier. The water-dilutable wood preservative concentrates according to the invention consist of 5 .. .35 parts by weight, preferably 15 .. .25 parts by weight of at least one water-dilutable alkyd resin (calculated as solids), 35 .. .5 parts by weight, preferably 25 ... 15 parts by weight of at least one liquid plasticizer or liquid plasticizer mixture at room temperature, using at least one alkyl, aryl or arylalkyl phthalate, preferably dibutyl, dioctyl and benzyl butyl phthalate, alkyl phosphate or phosphoric acid ester, phosphoric acid ester, phosphoric acid ester, - (2-ethylhexyl) adipate, stearate and / or oleate, alkyl stearate or alkyl oleate, preferably butyl oleate, butyl stearate or amyl stearate or liquid glycerol ester, and / or at least one polyol, polyol ester or ether, .. .10 parts by weight, preferably 25 .. .15 parts by weight of at least one non-ionogenic an emulsifier or emulsifier mixture, at least one of which is an ethoxylated phenol and / or an ethoxylated alkyl, aryl, arylalkylphenol or an ethoxylated phenol having one or more other side groups and / or an ethoxylated organic acid, preferably ethoxylated nonylphenol or nonoxylophenol , 5 .. .43 parts by weight, preferably 8 .. .40 parts by weight of at least one organic, water-insoluble insecticide and / or at least one organic, water-insoluble and / or organic, water-soluble fungicide, 0 to 6 parts by weight part, preferably 1 ... 2 parts by weight of a chemical compound acting as a buffer or pH adjuster and ______________ ΊΓ_ - 4,7361 9 0 to 15 parts by weight, preferably 0.001 to 7 parts by weight of water.

The use of an emulsifier mixture results in a fine distribution of the active ingredients and largely prevents dispersion, bottom precipitation or run-off. According to a preferred embodiment, the concentrate and the agent made therefrom for impregnating wood and wood contain a mixture of emulsifiers with different chain lengths, of which at least one emulsifier has an ethoxylated side chain with less than 10 ethoxy groups, and at least one of the other emulsifiers has ethoxylated has more than 10 ethoxy groups.

According to a highly preferred embodiment, the sealant contains, as a water-dilutable alkyd resin, an alkyd resin having an average oil length ("Ullmanns Enzyklopädie der technischen Chemie", 4th edition, 1978). The use of this alkyd resin, despite the extensive replacement of the petroleum-based organic solvent, results in a better adhesion of the active ingredients on the one hand and in the formation of a film on the other hand, depending on the alkyd resin content.

. According to a very convenient embodiment or combination, the sealant contains a buffer wave or a pH-ar-. as an amine, ammonium compound or quaternary ammonium compound or a mixture thereof.

The insecticide or insecticide mixture used consists of carbamate, phosphoric acid ester, phosphonic acid ester, thio-phosphoric acid ester, dithiophosphoric acid ester or thionophosphoric acid ester, chlorinated hydrocarbon, pyrethroid and / or endosulfan or two or more such compounds.

As the chlorinated hydrocarbons, dieldrin, aldrin and lindane are preferably used. Of the pyrethroids, the most preferred are alllethrin, cycletrin, furethrin, tetramethrin, resmethrin, 5,73619 permethrin, decamethrin and bioresmethrin, as well as other insecticidal active ingredients of pyrethrum.

Of the insecticidal carbamates, o-isopropoxyphenyl N-methyl carbamate and / or o-sec-butyl phenyl N-methyl carbamate are preferably used.

As the insecticidal thionophosphoric acid esters, insecticidal halogenated or halogen-free thionophosphoric acid esters of the formula c2h5 ° ^ s? N r \ C2H5 ° ^ are preferred, preferably (diethoxy-thio-phosphoryloxyimino) -phenylacetonitrile. O, O-diethyl-O- (cyanobenzylideneamino) thionophosphate and / or (diethoxythiophosphoryloxyimino) -2-chlorophenylacetonitrile and / or other phosphoric acid esters. preferably dimethoxy-O- (4-nitro-m-tolyl) phosphorothioate. as the carbamates soluble in the oily or oily solvent, alkoxy-phenyl-N-alkylcarbamates of the general formula V-O-C-NH-R10-R2 and / or of the general formula / ΓΛ ° \ 0-C-NH · R1 R2 are preferably used. alkylphenyl N-alkyl carbamate, in which formula in each case R2 represents an alkyl radical having 1 to 4 carbon atoms, preferably a methyl radical, and R2 denotes 1 to 5 carbon atoms. τ ».. ---- 6 7361 alkyl radicals containing 9 atoms, preferably alkyl radicals having 3 or 4 carbon atoms.

A water-insoluble fungicide or a water-insoluble fungicide mixture preferably consists of a tetravalent organotin compound, a chlorinated phenol, more preferably penta- or tetrachlorophenol, a 1-trityl-1,2-travole of the general formula N_ i) 6-s in which -, a chlorine or bromine atom, a trifluoromethyl, nitro or cyano group or an alkyl group containing up to 4 carbon atoms and n represents the numbers 1 or 2, and their salts with organic or inorganic acids or the (N-cyclohexyldiazenium) compound (or N-nitroso-N-cyclohexylhydroxylamine salt), preferably an aluminum compound thereof, and / or N, N-dimethyl-N'-phenyl-N '- (fluorodichloromethylthio) sulfamide and / or N, N-dimethyl -N'-p-tolyl-N '- (dichlorofluoromethylthio) sulfamide or two or more such compounds.

As oil-soluble, tetravalent, fungicidal organotin compounds, for example, tributyltin benzoate, tris- (tributyltin) phosphate, bis- (tributyltin) oxide can be used.

As the water-soluble fungicides, one or more water-soluble phenolates, more preferably chlorophenolate and / or one or more water-soluble metal salts of the (N-cyclohexyl-7,73619 diazeniumdioxy) compound (or N-nitro-iso-N-cyclohexyl) hydrochloride are preferably used.

For certain preparations, it may be appropriate to add an antifoaming agent, such as a silicone antifoam or alkyl phosphates, preferably tri-n-butyl phosphate.

A ready-to-use agent made of wood preservative concentrate for impregnating wood and wood contains 10 to 30% by weight # preferably 15 to 25% by weight of concentrate (calculated as anhydrous concentrate) and 90 to 70% by weight, preferably 85 to 30% by weight. 75% by weight of water.

The wood impregnating agent can be applied to the wood according to methods known per se, preferably by brushing, spraying, spraying or using impregnation methods, for example immersion, pressure and / or vacuum methods.

The invention further relates to a process for the preparation of a wood preservative concentrate and substances for impregnating wood material made therefrom. According to this method, an insecticide and / or an insecticide soluble in an organic solvent or solvent mixture containing water-insoluble hydroxyl groups and / or ether groups and a non-ionic emulsifier or a non-ionic emulsifier are treated according to this method. ° C, preferably at temperatures of 30 to 60 ° C and pressures of 0.5332 to 1.1332 bar, preferably 0.7999 to 1.0532 bar, in the presence or absence of other substances or constituents of these substances until a solution is formed, in which case other substances, including a buffering agent and possibly water, are preferably added afterwards to the solvent.

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Examples of water-dilutable wood preservative concentrates having insecticidal and fungicidal activity I% by weight lindane 2 aldrin 1 pentachlorophenol sodium 35 water-dilutable alkyd resin 14 butyl glycol 6 dibutyl phthalate · 20 ethoxylated nonylphenol; degree of ethoxylation 6 7 10 7 14 7 amine 1 Use: 20% concentrate - 80% water The ready-to-use wood preservative was obtained by mixing 20% by weight of concentrate with 80% by weight of water.

II% by weight 0,0-diethyl-O- (cyanobenzylideneamino) thionophosphate (Phoxim) 8 pentachlorophenol sodium 25 water-dilutable alkyd resin 17.5 butyl glycol 7.5 dibutyl phthalate 20.0 ethoxylated nonylphenol: degree of ethoxylation 6 7.0 10 .0 12 7.0 amine 1.0 Use: 20% concentrate - 80% water 9 73619 The ready-to-use wood preservative was obtained by mixing 20% by weight of concentrate with 80% by weight of water.

III.% By weight of lindane 4,0 cyclohexyldiazenium dioxide) potassium 5.0 water-dilutable alkyd resin 14,0 butyl glycol 6,0 ethyl glycol 22,5 ethyl glycoacetate 32,5 ethoxylated nonylphenols: degree of ethoxylation 6 5,0 10 5,0 14 5, 0 amine 1.0 Usage: 15% concentrate - 85% water.

Claims (9)

1. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood materials on the basis of a water-insoluble insecticide or insecticide mixture and / or a water-insoluble fungicide or fungicide mixture and an emulsifier, characterized in that 15 to 25 parts by weight, of at least one water-dilutable alkyd resin (calculated as a solid), 35 to 5 parts by weight, preferably 25 to 15 parts, of at least one room-type liquid plasticizer or a liquid plasticizer mixture, which plasticizer is used at least one alkyl, aryl - or arylalkyl phthalate, preferably dibutyl, dioctyl and benzylbutyl phthalate, alkyl phosphate or phosphoric acid ester, preferably tributyl phosphate or an adipate, preferably di- (2-ethylhexyl) adipate, stearate and oyl ether, or stearate and / or oleate, , butyl stearate or amyl stearate e or a liquid glycerine ester, and / or a polyol, ether or ester of polyols, preferably a glycol ether, 36 to 10 parts by weight, preferably 25 to 15 parts by weight, of at least one anionic emulsifier or emulsifier mixture, wherein at least one emulsifier is an ethoxylated phenol and / or an ethoxylated alkyl, aryl, 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, 5 to 43 parts by weight, preferably 8 to 40 parts by weight, of at least one organic water-insoluble insecticide and / or at least one organic water-insoluble and / or organic water-soluble fungicide, to 6 parts by weight, preferably 1 to 2 parts by weight, of a chemical compound acting as buffer material or pH regulating agent, and 0 to 15 parts by weight, preferably 0.001 to 7 parts by weight, water. 2. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood material according to claim 1, characterized in that the concentrate as an alkyd resin contains an alkyd resin having a medium length of oil. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood material according to claim 1 or 2, characterized in that the concentrate and the agent for the preservation of wood and wood material contains a mixture of emulsifiers, of which at least one emulsifier has a ethoxylated side chain having less than 10 ethoxy groups and of which at least one other emulsifier has an ethoxylated side chain having more than 10 ethoxy groups. 4. Wood preservative concentrate and agent prepared therefrom for preservation of wood and wood material according to any one of claims 1 to 3, characterized in that the concentrate contains as a buffering material or pH regulating agent an amine, an ammonium compound or a quaternary ammonium compound or a mixing them. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood material according to any one of claims 1 to 4, characterized in that the insecticide and insecticide mixture, respectively, consist of a carbamate, a phosphoric acid ester, a phosphonic acid ester, a thiophosphoric acid ester or a dithiophosphoric ester thionophosphoric acid ester, a chlorinated hydrocarbon, a pyrethroid and / or of endosulfan or of two or more of these compounds. _____ · l. ___________ _ 16 7361 9 6. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood material according to any one of claims 1 to 5, characterized in that the water-insoluble fungicide and water-insoluble fungicide mixture consist of a four-value organic tin compound, a chlorinated phenol, preferably penta. - or tetrachlorophenol, a 1-trityl-1,2,4-triazole of the general formula NN o - Γ - o ά ·· where R represents a fluorine, chlorine or bromine atom, a trifluoromethyl, nitro or cyano group or an alkyl group having up to 4 carbon atoms and n is 1 or 2, and salts thereof of organic or inorganic acids or a (N-cyclohexyl-diazanium dioxide) metal compound (or site of the N-nitroso-N-cyclohexylhydroxylamine ), preferably their aluminum compound, and / or N, N-dimethyl-N'-phenyl-N '- (fluorodichloromethylthio) sulfamide and / or N, N-dimethyl-N'-p-tolyl-N' - ( dichlorofluoromethylthio) sulfamide, or of two or more of these compounds. Wood preservative concentrate and agent prepared therefrom for preserving wood and wood material according to any one of claims 1 to 6, characterized in that one or more water-soluble phenolates, preferably chlorophenolate and / or one or more water-soluble metal salts, are used. a (N-cyclohexyldiazenium dioxide) compound (respective site of N-nitroso-N-cyclohexylhydroxylamine).