HU191070B - Wood-protecting agent concentratum for preserving wood and wooden structural materials - Google Patents

Abstract

The invention relates to a wood preservative concentrate and an agent prepared therefrom for preserving wood and wooden materials, composed of certain parts by weight of at least one organochemical, water-insoluble insecticide and/or at least one organochemical, water-insoluble fungicide, certain parts by weight of at least one water-dilutable synthetic resin, certain parts by weight of a solvent or solvent mixture, at least one nonionogenic emulsifier or emulsifier mixture, and, if required, a chemical compound, which acts as buffer material or pH regulator, and water, the solvent or solvent mixture being composed of at least one water-soluble hydroxyl group-containing and/or ether group-containing organochemical solvent and a water-insoluble solvent or solvent mixture and the concentrate or agent containing very high weight fractions, that is 50 to 37 parts by weight, preferably 48 to 38 parts by weight, of the nonionogenic emulsifier or emulsifier mixture. The water-insoluble solvent or solvent mixture is composed of at least one aliphatic and/or aromatic hydrocarbon and/or a liquid softener or a liquid softener mixture and is in a certain weight ratio to the water-soluble organochemical solvent.

Description

BACKGROUND OF THE INVENTION The present invention relates to wood preservative concentrates for the preservation of wood and wood construction materials, which contain 5-30 parts by weight, preferably 8-25 parts by weight of water-insoluble, insecticidal organic compound and water-insoluble fungicidal organic compound and 5-35 parts by weight. It contains 25 parts by weight of a water-dilutable resin and a solvent or solvent mixture optionally containing a plasticizer, a nonionic emulsifier or emulsifier mixture, a buffering or pH-adjusting compound and optionally water.

As active ingredients, water-insoluble insecticides and fungicides, such as chlorinated organic compounds such as dichlorodiphenyltrichloromethane (DDT) or hexachlorocyclohexane (HCH), or complex organic compounds such as caprylic esters or naphthenic acid esters with copper, zinc, concentrate is known from U.S. Patent No. 2,518,416. The formulation contains, in addition to the active ingredient, undefined emulsifiers which form a clear flowable emulsion when diluted with water when used. A disadvantage of the concentrate is that the emulsion formed upon dilution may be clouded, the active ingredients may be precipitated, and thus a partial loss of active ingredients and a decrease in the active ingredient content are often inevitable.

The object of the invention is to eliminate these disadvantages. SUMMARY OF THE INVENTION It is an object of the present invention to provide a wood preservative concentrate which, when added to water, produces a clear liquid, preferably a microemulsion, i.e., when diluted with water, does not result in the release of the active ingredient with reduced activity.

In our studies we have found that the above goal can be achieved with a wood preservative concentrate in which

1-5 parts by weight, preferably 8-25 parts by weight of a water-insoluble insecticidal organic compound and a water-insoluble fungicidal organic compound,

2. 5 to 35 parts by weight, preferably 15 to 25 parts by weight (based on dry matter) of at least one water-dilutable resin,

3. optionally a solvent or solvent mixture containing a plasticizer,

4. at least one nonionic emulsifier or emulsifier mixture,

5. a buffering or pH-regulating compound, and

6. optionally water, comprising from 3 to 30 parts by weight of hydroxyalkyl monoether HO- (CH ₂ / _n -O-R) and / or glycol HO- (CH 2) _n -OH as a solvent, wherein R is a C 1 -C 8 alkyl group and n is an integer from 2 to 6, 2-25 parts by weight of a water-insoluble solvent mixture having a vaporization rate greater than 35 and a flash point above 30 ° C, preferably boiling point 180-210 ° C; It consists of a mixture of a petroleum fraction boiling at 210 DEG C. and 50-37 parts by weight of ethoxylated alkylphenol, preferably ethoxylated nonylphenol and 0-6 parts by weight of water, containing from 6 to 12 carbon atoms and preferably from 48 to 38 parts by weight. the weight ratio of solvent mixture to hydroxyalkyl monoether and / or glycol is from 6: 1 to 1:20, preferably from 4: 1 to 1:10.

The water-insoluble solvent or solvent mixture comprises at least one aliphatic and / or aromatic hydrocarbon and optionally a liquid plasticizer. The weight ratio of water-immiscible solvent to water-soluble organic solvent is from 6: 1 to 1:20, preferably from 4: 1 to 1; It can vary between 10.

Due to the high concentration of emulsifiers, the active ingredients are evenly distributed in the composition and no separation, sedimentation or soil formation can occur in the composition.

Preferably, the wood preservative concentrate of the present invention comprises a mixture of emulsifiers having a different number of ethoxy groups, said mixture comprising at least one ethoxylated side chain alkyl phenol having less than 10 ethoxy groups.

A particularly preferred embodiment of the wood preservative concentrate of the present invention is an alkyd resin having a medium-chain fatty acid moiety as a water-dilutable resin. The use of such a resin can provide good adhesion to a smaller amount of organic solvent, such as a petroleum-based solvent, and can also provide film formation depending on the proportion of the resin.

The wood preservative concentrate according to the invention contains from 0 to 6 parts by weight, preferably from 1 to 2 parts by weight, of one or more alkaline compounds as buffering or pH adjusting agents, whereby the pH of the concentrate is between 7 and 10.

Alkaline can be used to adjust the pH. such as sodium hydroxide or potassium hydroxide, a basic reactant such as sodium carbonate, and amines, ammonium compounds or quaternary ammonium compounds, or various mixtures thereof.

Preferably, the composition of the invention comprises a water-insoluble nonionic organic insecticide such as carbamate, phosphoric ester, thiophosphoric ester, dithiophosphoric ester, chlorinated hydrocarbon, pyrethroid and / or endosulfan, or 2 or more thereof.

As the chlorinated hydrocarbon, the composition preferably comprises dieldrin, aldrin or lindane. Preferably, the pyrethroids contain allethrin, cyclethrin, furethrin, tetramethrin, resmethrin, permethrin, decamethrin or bioresmethrin, but may also contain other synthetic or natural pyrethroid-based insecticides.

Among the insecticidal carbamates, we have found that o-isopropoxyphenyl-N-methylcarbamate and o-sec-butylphenyl-N-methylcarbamate are preferred.

Preferably, the composition contains 0.0-diethyl-O- (alpha-2-cyanobenzylideneamino) -thiophosphate of formula (1) as an insecticidal thionophosphoric acid ester, but may also contain an optionally halogenated thionophosphoric acid ester and the like, namely thiophosphoryloximino) phenylacetonitrile, (diethoxythiophosphoryloximino) -2-chlorophenylacetonitrile or other esters of phosphoric acid, preferably dimethoxy-O- (6-nitro-m-tolyl) phosphorothioate.

Preferably, the organic solvent-soluble carbamate is an alkylphenyl-N-alkylcarbamate of formula (II). In the general formula, R 1 is C 1 -C 4 alkyl, preferably methyl, R ₂ is C 1 -C 5, preferably C 3 -C 4 alkyl.

Preferably, the composition comprises a salt of N-nitroso-N-cyclohexylhydroxylamine, preferably an aluminum salt, or 2,5-dimethyl-N-cyclohexyl-N-methoxy-3-furancarboxylic acid as the nonionic organic water-insoluble fungicide.

As the hydroxy monoether and / or glycol according to the formulas defined above, for example, water-soluble polyols or ethers of polyols, preferably glycol ether, may be used. Preferred such compounds are ethylene glycol (2-hydroxyethanol), diethylene glycol (2,2-dihydroxy diethyl ether), ethyl glycol (2-ethoxyethanol), butyl glycol (1-hydroxy-2- (n-butoxy) ethylene) and / or ethyl diglycol (2- (2-ethoxyethoxy) ethanol).

The water-insoluble organic solvent used is a solvent having an evaporation number greater than 35 and a flash point greater than 30 ° C, preferably greater than 55 ° C.

Suitable solvents include, for example, suitable mineral oils or aromatic fractions thereof, white spirit, kerosene, gas oil and / or alkylbenzenes.

Petroleum fraction boiling in the range of approximately 150 ° C to 220 ° C,

White spirit boiling at 170-220 ° C,

250-350 ° C boiling oil, \

The petroleum or aromatic fraction or turpentine oil boiling at 160-260 ° C is used. It has been found particularly advantageous to

180 A mixture of petroleum fraction boiling in the range 210 ° C and white spirit boiling in the range 180-210 ° C.

As a plasticizer, the solvent contains liquid plasticizers at room temperature.

Preferably, the plasticizer is an alkyl, aryl or aralkyl phthalate, preferably dibutyl, dioctyl or benzyl butyl phthalate, alkyl phosphate or an ester of phosphoric acid, preferably tributyl phosphate or adipate, preferably di (2-ethylhexyl) adipate. alkyl stearate or alkyl oleate, preferably butyl oleate, butyl stearate or amyl stearate or a liquid glycerol ester is used.

In some cases, it is desirable to supplement the composition with antifoaming agents such as silicone antifoaming agents or alkyl phosphates, preferably thyr (n-butyl) phosphate. Additionally, colorants and other additives necessary to provide the desired property may be added to the composition.

Ready-to-use preservative for wood or wood-based materials,

070 which can be prepared from the concentrate, from 10 to 35% by weight, preferably 15-30% by weight of the concentrate (based on dry concentrate)% and 90-65% by weight, preferably 85-70 parts by weight of water ⁵ talmaz tar.

The wood preservative can be applied to the wood by known methods. Thus, it may be applied, for example, by lubrication, spraying, spraying, impregnation or by the immersion, ¹ θ pressure and / or vacuum method.

In the manufacture of wood preservative concentrate according to the invention proceeds in such a way that the solubility in an organic solvent or solvent mixture insecticides and fungicides and nonionic emulsifiers ¹⁵ cake or emulsifier mixture with other material, or the time required is treated with these components in the presence or absence of 10 to 80 ° C, preferably at a temperature of 30-60 ° C and a pressure of 0.5332-1.332 bar, preferably 0.7999-1.0532 bar, until a solution is formed, followed by addition of other substances, including buffer and optionally water.

The invention is illustrated by the following examples, which are not intended to limit the scope of the invention. The percentage by weight data reported ²⁵ examples Tenet.

Example 1

1,2,3,4,10,10-Hexachloro-1,4,4a, 5,8,8a-hexahydro-1,4-endo-5,8-exo-dimethanonaphthalene (aldrin) 3 % 2,5-dimethyl-N-cyclohexyl-N-methoxy-3- furánkarbonsavamid 7.5% ethoxylated nonylphenol containing 6 ethylene oxide units 13 % Contains 10 units of ethylene oxide 16 % Contains 14 ethylene oxide units 13 % oily alkyd resin modified with phthalic acid 20 % Triflic glycol 8 % ethylene glycol 10 % 180 A mixture of white spirit and petroleum fractions boiling in the range 210 ° C 7.5% monoethanolamine 2 %

100% by weight of the concentrate was diluted with 80 parts by weight of water. Then ready to use wood preservative obtained optically clear microemulsion ^of alak50 í ·.

The insecticidal and fungicidal wood preservatives thus obtained are also suitable for the protection of wood and wood structural materials against termites.

Example 2

1,2,3,4,10,10-hexachloro-1,4,4a, 5,8,8a- 2.4% hexahydro-1,4-endo-5,8-exo-dimethanonaphthalene (aldrin) N-cyclohexyl-diazenium dioxide alumíni- 10% um ethoxylated nonylphenol Contains 6 ethylene oxide units 13% Contains 10 units of ethylene oxide 16% Contains 14 ethylene oxide units 13%

190,070

oily alkyd resin modified with phthalic acid 14.6% butyl glycol 6.2% Blend of petroleum spirit and petroleum fraction, boiling in the range of 180 to 210 ° C 23.3% monoethanolamine 1.5% 100%

dilute 75 parts by weight of the concentrate with 75 parts by weight of water. This provides a ready-to-use wood preservative in the form of an optically pure microemulsion.

The insecticidal and fungicidal wood preservatives thus obtained can also be used to protect wood or wood construction materials against termites.

Example 3

0,0-diethyl-0- (alpha-cyano-benzylidene 10% amino) thionophosphate (phoxim) 2,5-dimethyl-N-cyclohexyl-N-methoxy-3- furan-karonsavamid ethoxylated nonylphenol 7.5% Contains 6 ethylene oxide units 14% Contains 10 units of ethylene oxide 16% Contains 14 ethylene oxide units 14% oily alkyd resin modified with phthalic acid 16.3% butyl glycol 7% Blend of petroleum spirit and petroleum fraction, boiling in the range of 180 to 210 ° C 7.5% dibutyl phthalate 6% monoethanolamine 1.7% 100%

part by weight of the concentrate was diluted with 80 parts by weight of water. This provides a ready-to-use wood preservative in the form of an optically pure microemulsion.

The insecticidal and fungicidal wood preservatives thus produced are also suitable for protecting internal surfaces.

EXAMPLE 4 1,2,3,4,7,7-Hexachlorobicyclo (2.2.1) -hept-5%

2-ene-5,6-ylene-dimethylsulfite (endosulfan) (insecticide) xylogen B (3-furancarboxylic acid amide) 15% (fungicide) white spirit 15% phthalic acid modified alkyd resin 26% butyl glycol 12% monoethanolamine 2% ethoxylated nonyl -phenol containing 8% ethylene oxide units 9% ethylene oxide units 8% ethylene oxide units 8%

100%

The concentrate can be used to make an optically pure microemulsion.

Example 5

3- (Phenoxybenzyl) -3- (2,2-dichlorovinyl) -2,2-1% dimethylcyclopropanecarboxylate

(Permethrin) 2,5-Dimethyl-N-cyclohexyl-N-methoxy-3-furancarboxylic acid amide (Furmecyclox) ethoxylated nonylphenol 14,5% Contains 6 ethylene oxide units 12% Contains 10 units of ethylene oxide 14% Contains 14 ethylene oxide units 12% oily alkyd resin modified with phthalic acid 22.5% butyl glycol 7.5% monoethanolamine 2% white spirit 14,5% 100% When used, 10 parts by weight of the concentrate are diluted with 90 parts by weight of water. Example 6 [2- (sec-butyl) phenyl] -N-methylcarbamate (Bassa) 12% furmecyclox ethoxylated nonylphenol 7.5% Contains 6 ethylene oxide units 15% Contains 10 units of ethylene oxide 17.2% Contains 14 ethylene oxide units 15% oily alkyd resin modified with phthalic acid 18% butyl glycol 6% monoethanolamine 1.8% white spirit 7.5% 100% When used, 20 parts by weight of the concentrate are diluted with 20 parts by weight of water. Example 7 0,0-Diethyl-O- (a-cyanobenzylideneamino) thionophosphate (Phoxim) 6% N-Cyclohexyl-diazonium-dioxide-aluminum ethoxylated nonylphenol 7.5% Contains 6 ethylene oxide units 15% Contains 10 units of ethylene oxide 16,8% Contains 14 ethylene oxide units 15% oily alkyd resin modified with phthalic acid 12% butyl glycol 4% monoethanolamine 1.2% Aromatic mineral oil boiling point 160-260 ° C 22.5%

100%

When used, a mixture of 33% concentrate is prepared with water.

The compositions of Examples 2 and 3 were compared with formulations other than those containing no amount of emulsifier typical of the invention. Otherwise, their composition was the same as that of Examples 2 and 3, with the following differences:

Example 2/2 Ethoxylated nonylphenol 28.0% Water 14.0% instead of 42%

190,070

Example 3/2 Ethoxylated nonylphenol water

Example 3/3 Ethoxylated nonylphenol water

33.0% instead of 44% 11.0%

Instead of 44% 22.0% 22.0%

Example 3/4 ethoxylated nonylphenol instead of 44% 11.0% water 33.0%

Aqueous dilutions containing 25% of concentrates in Examples 2 and 2/2 and 20% in concentrates of Examples 3 and 3/2, 3/3 and 3/4 were prepared and tested for light transmission. in terms of ability (transmission) with pure water as a standard. The test was performed in the visible light range with wavelengths ranging from 400 nm to 800 nm. Into one cuvette is placed the sample to be examined and in the other to clean water. As can be seen from the table below, the light transmittance (100% pure water) of the composition according to the invention is significantly higher than that of the comparative samples, which shows that the composition of the invention does not become cloudy when diluted with water. , as in prior art compositions.

Light transmission (%) against water

Wave- length composition of the samples Example 2 Example 2/2 Example 3 Example 3/2 Example 3/3 Example 3/4 400 nm 44 0 40 0 0 0 450 nm 73 0 70 1 0 0 500 nm 85 0 82 2 0 0 550 nm 90 0 91 5 0 0 600 nm 93 0 96 10 l 0 650 nm 95 0 97 17 0 700 nm 95 0 98 24 2 0 750 nm 96 0 98 31 4 0 800 nm 96 0 98 37 8 0

Claims (1)

A patent claim Wood preservative concentrate for preserving wood and wood-based construction materials comprising ^{5 to} 30 parts by weight, preferably 8-25 parts by weight of water-insoluble, insecticidal organic compound and water-insoluble fungicidal organic compound, 5 to 35 parts, preferably 15 to 25 parts by weight of water a dilutable resin and a solvent or solvent mixture, optionally containing a plasticizer, and a nonionic emulsifier or emulsifier mixture, a buffering or pH-adjusting compound and optionally water, wherein the solvent is 3-30 parts by weight of HO ¹⁵ (CH ₂ ) _n -O -R alkilmonoétert hydroxy and / or HO (CH ₂ / _n -OH glycol of the formula wherein R is C1-8 alkyl, and ₀ 2 is an integer 2-25 n is an integer from 2 to 6 parts by weight of 35- formula insoluble in water with a flash point greater than 30 ° C solvent mixture, preferably from 180 to 210 ° C boiling point of white spirit and 180 to 210 ° C boiling petroleum fraction mixture and 50-37 parts by weight, preferably 48-38 parts by weight of ethoxylated alkyl phenol having 6-12 carbon atoms ^ö side chains, and 4-20 ethoxy units, preferably ethoxylated nonylphenol and 0 to 6 parts by weight of water, and the weight ratio of the water-insoluble solvent mixture to the weight of the hydroxyalkyl monoether and / or glycol is 6: 1 to 1: 20, preferably 4 It is between 1 and 1: 10. 1 page drawing. Published by the National Office of Inventions Responsible for publishing: Zoltán Himer, Head of Department 88-1280 - Dabasi Nyomda, Budapest - Dabas Chief Executive Officer: Csaba Bálint Director