GB1564188A - Preservative for wood and wood-based materials - Google Patents

Preservative for wood and wood-based materials Download PDF

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Publication number
GB1564188A
GB1564188A GB10765/78A GB1076578A GB1564188A GB 1564188 A GB1564188 A GB 1564188A GB 10765/78 A GB10765/78 A GB 10765/78A GB 1076578 A GB1076578 A GB 1076578A GB 1564188 A GB1564188 A GB 1564188A
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preservative
weight
wood
swelling agent
binder
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Desowag Materialschutz GmbH
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Desowag Bayer Holzschutz GmbH
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N29/00Biocides, pest repellants or attractants, or plant growth regulators containing halogenated hydrocarbons
    • A01N29/04Halogen directly attached to a carbocyclic ring system
    • A01N29/06Hexachlorocyclohexane
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N31/00Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/08Oxygen or sulfur directly attached to an aromatic ring system
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N31/00Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
    • A01N31/08Oxygen or sulfur directly attached to an aromatic ring system
    • A01N31/10Pentachlorophenol
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/20Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom three- or four-membered rings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/02Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having no bond to a nitrogen atom
    • A01N47/04Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having no bond to a nitrogen atom containing >N—S—C≡(Hal)3 groups
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/22O-Aryl or S-Aryl esters thereof
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N55/00Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur
    • A01N55/02Biocides, pest repellants or attractants, or plant growth regulators, containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
    • A01N55/04Tin
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/10Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
    • A01N57/14Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing aromatic radicals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34Organic impregnating agents
    • B27K3/50Mixtures of different organic impregnating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/001Heating

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Plant Pathology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

A preservative for wood and wooden materials contains more than 50 % by weight, relative to the total quantity, of at least one non-volatile, oil or oil-like, organic chemical solvent with an evaporation number above 35 and a flash point above 30 DEG C. In addition the agent contains 0.3 - 7 % by weight, relative to the total quantity, of at least one insecticide, soluble in the solvent described and/or in the binding agent, and/or 0.5 - 10 % by weight, relative to the total quantity, of at least one fungicide, soluble in the said solvent and/or in the binding agent used, as well as at least one binding agent, dispersable or soluble in the solvent described, as well as at least one further additive. Contained in the agent are 3 - 15 % by weight, relative to the total quantity, of the binding agent and, as additive, 3 - 10 % by weight, relative to the total quantity, of at least one finely divided, inorganic and/or organic swelling agent. The weight ratio of the binding agent to the swelling agent is 4:1 to 1:3.3 and the preservative has a viscosity of 300 - 4000 mPa.s, measured at 20 DEG C.

Description

(54) PRESERVATIVE FOR WOOD AND WOOD-BASED MATERIALS (71) We, DESOWAG-BAYER HOLZ SCHUTZ G.M.B.H., a body corporate organized under the laws of the German Federal Republic, of 4000 Diisseldorf 30, Ross-Strabe 76, German Federal Republic, do hereby declare the invention for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a preservative for wood and wood-based materials, and to a process for the production of the preservative with a given viscosity.
The previously proposed oily wood preservatives, in which for example mineral oil is used as a solvent, are low-viscosity oils which possess a certain ability to penetrate wood in accordance with the type of wood, timber or wood based material (for example pine sapwood). However, the small quantity applied per operation is a disadvantage in the surface treatment of wood or wood-based materials, for example by brushing, rolling or spraying processes. Thus in the case of wood preservatives having a base of white spirit (boiling range 140 to 215"C.) the quantity applied, that is to say the amount of wood preservative applied per unit area, for example on planed timber, per operation, is very small being 0.050 to 0.080 kg./m2. In order to achieve adequate protection of the timber in many fields of application larger quantities of preservative are necessary.There therefore already exist in many countries certain regula tions, for example in the Federal Republic of Germanv DIN 68 800 "Wood preservatives in building", according to which for effective timber protection considerably larger quantities of wood preservative have to be applied according to the thickness of the wood in order to meet these requirements. As a result of the large quantity required, for example of over 0.200 kg./m2. up to about 0.300 kg./m2., in the case of planed timber this would require a fourfold to fivefold surface treatment with a normal wood preservative. This makes labour-intensive and costly processes necessarv.
It has been proposed to incorporate montmorillonite derivatives in paints and printing inks as agents for rendering them thixotropic (R6mpp, Chemie-Lexikon, 1972, page 328).
Furthermore, a biocidal preparation which is intended for timber protection has already been proposed and substantially consists of 5 to 50 parts of oil or synthetic resin, 0 to 6 parts of pigment, 1 to 10 parts of biocide and 40 to 85 parts of a conventional petro leum-based solvent or mixture of such solvents as well as in addition 2 to 20 per cent by weight of N-methyl-2-pyrrolidone, reckoned on the total of the other components.
However, the use of resins, for example alkyd resins, in timber preservatives containing fungicides inhibits penetration of the active principles into the timber and in order to avoid this disadvantage, it is necessary to incorporate the N - methyl - 2 - pyrrolidone in the preparation.
It would be desirable to provide a preservative for wood and wood based materials which makes it possible to apply the desired or required quantities on to the surface of the wood or of the wood based material, if possible in a single operation. As a result of the operation it is desirable to reduce the odour which frequently occurs when using or applying timber preservatives based on oily solvents.
Further it is desirable to provide a wood preservative which can also prevent to a certain extent the natural swelling of the wood.
Finally, the preservative should adhere well to the surface of the wood or wood-based material and satisfy the possibility of providing a decorative surface without reducing the penetrability of the fungicides and/or insecticides present in the preservative.
We have carried out numerous experiments with different wood preservatives based on oily organic solvents. In these experiments tests were carried out, inter alia, on means for preserving wood and wood-based materials which had been produced by using more than 50 per cent by weight, preferably more than 72 per cent by weight, of a non-volatile oily or oillike solvent, fungicides and/or insecticides as well as swelling agents. The swelling agents which were used experimentally in this case were the swelling agents conventionally used in the paint and printing ink industry, for example montmorillonites or expanding clays.
In these experiments, however, it was found that such preservatives did not possess an adequate adhesion to the wood so that after drying, there was frequently left behind a poor-looking coating which in a few cases even crumbled off.
In addition, experiments were carried out in which wood preservatives were used which consisted of more than 50 per cent by weight, preferably more than 72 per cent by weight, of a non-volatile oily organic solvent, fungicides and/or insecticides and also a binder or thixotropic binder. However, in these experiments it was difficult or impossible to apply the desired quantity of preservative and, it was not possible to suppress the objectionable smell of the preservative.
According to one aspect of the present invention there is provided a preservative for wood or wood-based material, comprising over 50% by weight of a base, all or a major pro portion of which is an organic3 oily solvent, or mixture of solvents, of low volatility having an evaporation number exceeding 35 as determined in accordance with DIN 53170 and a flash point above 30"C., from 3 to 15% by weight of one or more binders (reckoned on solid material) dispersible or soluble in said base, from 0.3 to 7% by weight of one or more insecticides soluble in said base and/or in said binder(s), from 0.5 to 10% by weight of one or more fungicides soluble in said base and/or in said binder(s), and from 3 to 10% by weight of at least one organic or finelydivided inorganic swelling agent, the proportion by weight of binder(s) to swelling agent(s) being from 4:1 to 1:3.3.
The present preservative comprises preferably more than 72 per cent by weight of said base; preferably from 0.5 to 4 per cent by weight of said insecticide; preferably from 1 to 7 per cent by weight of said fungicide; preferably 4 to 10 per cent by weight of said binder; and preferably 4 to 7 per cent by weight of said swelling agent which may be an inorganic and/or an organic swelling agent, the proportion by weight of the binder to the swelling agent being preferably from 2:1 to 1:1.3.
It is important to maintain the quantities and also proportions by weight stated. If, for example, the proportion of the binder(s) to swelling agent(s) falls below the propor tion stated, the danger exists that the timber preservative will not have an adequate adhe siveness to wood or that after the agent has dried, sandy or poor surfaces will result or else under certain conditions there can occur a reduction in the efficacy of the preservative.
If, on the other hand, the proportion of swelling agent(s) to binder(s) should fall below the proportions by weight stated, it is no longer possible to apply the preservative to the same extent in the desired quantities.
Furthermore, it is also not possible to reduce the smell to the desired extent. The binder used in the present preservative may comprise a linseed oil varnish (and/or one or more resins soluble in the oily base, such resins preferably being alkyd resins or modified alkyl resins, polyacrylate esters, polypropylene chloride, copolymers of vinyl chloride and/or hydrocarbon resins or mixtures thereof.
It is also possible to use other resins which are dispersible, preferably soluble, in the oily base, for example phenol resins and/or indenecoumarone resins. The binder is conveniently added during the manufacture of the preservative in a finely-divided form, for example in the form of a dispersion (emulsion or suspension), preferably in the form of a solution.
Preferred binders include oil-modified and/ or polyurethane-modified alkyd resins.
It has further been found desirable for the proportion by weight of the base to the swelling agent(s) to be from 10:1 to 25:1, preferably from 13:1 to 20:1, thereby ensuring that the preservative can penetrate well into the timber.
In one embodiment of the present preservative, from 0.1 to 7 per eent by weight, preferably from 0.5 to 3 per cent by weight, of the oily base consists of one or more readily volatile or medium-volatile organic solvents which are soluble in the oil base, and/or of one or more plasticisers or fixers, provided that the resulting base mixture also possesses an evaporation number of over 35 and a flash point of over 30"C. Preferably, the readily volatile or medium-volatile organic solvents are hydrophilic solvents which are soluble in the oily base and which are preferably monohydric or polyhydric alcohols with 1 to 7 carbon atoms and/or ethers, preferably glycol ethers and/or esters and/or ketones. Preferred hydrophilic solvents include methanol, ethanol, n-propanol, iso-propanol, benzyl alcohol, butyl acetate, ethylene glycol acetate, methylethylketone or a mixture of two or more of these compounds.
By appropriate choice of the hydrophilic solvent, it is possible to improve the swelling capacity of the swelling agent.
The swelling agent or swelling agents are swellable in the oily base and may be in the form of finely-divided inorganic swelling agents, such as finely divided swelling clays, montmorillonites, silica gels, aluminium stearate, calcium stearate, magnesium stearate, or organic swelling agents such as hardened castor oil, or mixtures or several such swelling agents.
Where the swelling agent is finely-divided it preferably has a mean particle size of 1 to 30 um., more preferably 4 to 20 ,us., before it is incorporated in the present preservative.
Preferably, the viscosity of the present wood preservative is from 300 to 4,000 cP (measured at 20"C.), more preferably 1,500 to 3,000 cP (measured at 20"C.).
By keeping to the weights and proportions by weight stated, it is possible to make the present preservative with such a viscosity that it can be applied to wood in a single operation, for example by brushing or by spraying using conventional spraying apparatus, for example airless appliances, spray guns, pressure jets, etc., or else by a rolling process. In a number of experiments, for example, it was possible in one operation to spray 0.300 to 1.000 kg./ m2. of wood preservative, it being possible also to apply or spray the preservative on to vertically standing planed surfaces, without its running off. Also where very large quantities of preservative were applied, for example quantities of 1.000 kg./m2., it was possible to obtain surfaces with a decorative effect.
Whereas in the preliminary experiments it was oberved that if the proportion of resin was too small or if the binder was completely omitted poor surfaces were obtained on the wood, in the case of the present wood preservative a smooth surface is formed and where the larger quantities are applied, for example over 0.600 kg./m2., it is formed as a visible thin film. It is surprising that if the proportions by weight stated are maintained, the penetration of the present wood preservative into the wood is not adversely affected, in spite of the presence of both the swelling agent(s) and the binder(s).
The aforesaid fixers or plasticisers which may constitute part of the solvent base are mainly those compounds which act as plasticisers on the binders used or which in addition are intended to prevent the volatilisation and/ or crystallisation or precipitation of the active ingredients of the preservative.Preferred plasticisers include, for example alkyl, aryl, or aralkyl phthalates; preferably dibutyl, dioctyl and benzylbutyl phthalates; phosphate esters, preferably tributyl phosphate; adipates, for example di - (2 - ethylhexyl adipate; stearates and oleates, for example alkyl stearates or alkyl oleates, preferably butyl oleate, butyl stearate or amyl stearate; bis - (dimethyl- benzyl) ether, ethyl p - toluenesulphonate, glycerol esters, glycerol ethers or high-molecular weight glycol ethers. Preferred fixers include those based on ketones and/or polyvinylalkyl ethers, for example ketones with alkyl, aryl or aralkyl groups, preferably benzophenone or ethylbenzophenone; polyvinylalkyl ethers, preferably polyvinylmethyl ether.
The organic non-volatile oil solvent with an evaporation number of over 35 as determined in accordance with DIN 53170 and a flash point of over 30"C., preferably over 45 C., used in the present preservative is a waterinsoluble or sparingly soluble solvent, such as a mineral oil or an aromatic fraction thereof or a solvent mixture containing mineral oil, preferred solvents including white spirit, paraffin oil, gasoil and/or alkylbenzenes.
More preferred solvents include mineral oils with a boiling range of 170 to 220"C., white spirit with a boiling range of 170 to 220 C., spindle oil with a boiling range of 250 to 350"C., paraffin oil cr aromatics with a boiling range of 160 to 280"C. and turpentine oil.
In addition it is possible to incorporate in the present preservatives dyestuffs, pigments, especially finely-divided pigment pastes, water repellents, odour correctors and inhibitors or anti-corrosive agents, marking agents and the like as may be necessary or desired. As the present wood preservative has in itself a very pronounced waterproofing action, the addition of water repellents is generally not necessary.
In some cases, however, it is possible to use water-repellents, such as waxes, wool grease and the like in proportions by weight of 0.2 to 5 per cent by weight, preferably 0.5 to 2 per cent by weight, based on the weight of the preservative. Marking agents which may be used include for example, lithium compounds or cadmium compounds, and in one embodiment from 0.01 to 0.03 per cent by weight of an organic oil-soluble lithium compound is used as a marking agent.
A further advantage of the present preservative which may be of medium-viscosity to highly viscous, is the possibility of obtaining a glazing coat by stirring a pigment paste into the preservative during the production thereof or even into the finished preservative.
In order to inhibit any corrosive effects which the present preservative may have on iron or non-ferrous metals which come into contact with the preservative anti-corrosive agents, for example mandelic acid and/or benzotriazole may be added to the preservative, the benzotriazole and/or the mandelic acid being added in proportions by weight of 0.01 to 0.5 per cent by weight, preferably 0.05 to 0.1 per cent by weight, as described and claimed in the Specification of our Patent No.1,511,197.
The insecticide ingredient of the present preservative may be a conventional insecticide which is soluble in the oily solvent(s). Examples of suitable insecticides include for example carbamates, insecticidal chlorinated hydrocarbons and phosphate esters, preferably insecticidal alkoxy - phenyl - N - alkyl carbamates and/or alkyl - phenyl - N - alkyl carbamates as well as halogenated or nonhalogenated thiophosphate esters or thiophosphonate esters, as well as lindane.
The fungicide ingredient of the present preservative may likewise be a conventional fungicide which is soluble in the oily solvent(s).
It has been found that it is preferable to incorporate the fungicides in different concentrations in dependence upon the nature of the fungicides. In one embodiment 3 to 10 per cent by weight, preferably 4 to 7 per cent by weight, of chlorophenol, preferably pentachlorophenol and/or tetrachlorophenol, may be used as a fungicide. In another embodiment 1 - tritvl - 1,2,4 - triazoles are used in the preservative as fungicides. Particularly good effects can be achieved using bis - phenyl - (3trifluoromethyl - phenyl) - 1 - (1,2,4 - triazolyl) - !ethane.
Another preferred embodiment consists in replacing the abovementioned fungicidal ingredient either wholly or partly by another fungicide, such as N,N - dimethyl - N'phenyl - N' - fluorodichloromethylthio - sulphamide of the formula
and/or N - fiuorodichloromethylthio - phthalimide of the formula
Thus up to 80 per cent by weight, preferably up to 50 per cent by weight, of the firstmentioned fungicide is replaced by another fungicide. Such a mixture is particularly suitable for the simultaneous combating of wooddestroying fungi and wood-staining fungi, such as for example glue fungi.
It is also possible to use other fungicides which are soluble in the oily base or mixtures of these fungicides with the abovementioned fungicides, such as for example, fungicidal oilsoluble naphthenates, preferably zinc and/or copper naphthenates; 8-oxyquinoline or its fungicidal oil-soluble salts or derivatives, preferably phenyl mercury - 8 - oxyquinolate; fungicidal compounds or derivatives or mixtures of chlorophenols, preferably compounds or mixtures of pentachloro-phenol and/or tetrachlorophenol with non-volatile amines, for example dehydroabietylamine; nitrophenols or nitrochlorophenols and/or nitrochlorobenzenes, especially 1,2 - dinitrotetrachlorobenzene and/or methyl benzimidazole - 2 - carbamidate and/or oil-soluble fungicidally active organic compounds containing metal, for example, copper, zinc, manganese, cobalt, chromium or mercury, for example in the form of caprylates, naphthenates, oleates and the like; fungicidal salts of N - nitroso - N - cyclohexylhydroxylamine, preferably the aluminium salt of Nnitroso - N - cyclohexylhydroxylamine and/or N - trichloromethyl - thiotetrahydrophthalimide.When using any of the abovementioned additional fungicides, for example N - nitroso N - cyclohexyl - hydroxylamine and/or the naphthenates, oleates and the like; fungicidal aluminium salt of N - nitroso - N - cyclohexylhydroxylamine, however, it must be taken into account that these fungicidal compounds are only suitable for certain species of wood or wood fungi. In mixtures of fungicides it is also possible to include at the same time tar oil distillates and/or tar oils.
In a particularly advantageous embodiment, the present wood preservative contains from 0.5 to 7 per cent by weight, preferably 2 to 4 per cent by weight, of an insecticide mixture consisting of at least one insecticidal alkoxy - phenyl - N - alkyl - carbamate and/ or alkylphenyl - N - alkyl carbamate soluble in the oily solvent, and at least one insecticidal halogenated or non-halogenated thiophosphate ester or insecticidal thionophosphonate ester of the general formula
in which formula R1 is an alkyl radical with 1 to 4 carbon atoms, R2 is an alkyl radical or an alkoxy radical with 1 to 4 carbon atoms, or a phenyl radical and R3 is a phenyl radical or a phenyl radical which is substituted with 1 to 3 halogen atoms or alkyl or alkoxy radicals, which ester is soluble in the oily solvent, the insecticide mixture containing the carbamate or the carbamate mixture in a proportion by weight of 3:1 to 1:3, preferably from 1:0.5 to 1:2, to the thiophosphate ester or thionophosphate ester or thionophosphonate ester or mixture thereof.
Preferably the insecticide mixture comprises an alkoxyphenyl - N - alkyl carbamate of the general formula
and/or an alkylphenyl - N - alkyl carbamate of the general formula
in each of which formulae Rl is an alkyl radical with 1 to 4 carbon atoms, preferably a methyl radical, and R is an alkyl radical with 1 to 5 carbon atoms, preferably an alkyl radical with 3 or 4 carbon atoms.
The aforesaid halogenated or non-halogenated thionophosphate ester may have the formula
and is preferably 0,0 - diethyl - 0 cyanobenzylidene - amino) - thionophosphate and/or (diethoxy - thiophosphoryloxyimino)2 - chlorophenylacetonitrile.
Advantageously, the insecticide may be a mixture consisting of 2 - isopropoxy - phenyl N - methyl carbamate and/or butylphenyl - Nmethyl carbamate and an insecticidal halogenated or non-halogenated thionophosphate ester of the formula
Preferably 0,0 - diethyl - 0 - (ft - cyanobenzylidene - amino) thionophosphate and/or (diethoxy - thiophosphoryloximino) - 2 - chloro- phenyl acetonitrile.
The invention further provides a method of making the present preservative for wood or wood-based material wherein the binder(s) in an amount of from 3 to 15 per cent by weight and the swelling agent(s) in an amount of from 3 to 10 per cent by weight are incorporated with the remaining ingredients so as to provide the preservative with a viscosity of 300 to 4,000 cP (measured at 20 C.), preferably 1,500 to 3,000 cP (measured at 20 C.).
The method is preferably carried out by placing the oily solvent in a tank and, whilst stirring, adding the swelling agent or agents and then the fugicide(s) and insecticide(s), then the binder(s) and finally any necessary siccative(s) or other additives. The method is carried out at a temperature of 10 to 65 C., more preferably 30 to 55 C.
In another preferred embodiment of the method, the swelling agent(s) is (are) stirred or dispersed in the non-volatile oily solvent and one or more hydrophilic solvent(s) is (are) added in proportions by weight of 0.5 to 3 per cent by weight (reckoned on the finished preservative) either before, during or after the addition of the swelling agent(s), preferably after the addition of the swelling agent(s), and preferably after the swelling agent(s) the insecticide(s) and/or the fungicide(s) are added whilst stirring, followed by the binder(s) and then possibly the siccative(s) or other additives.
The present preservative is preferably applied in quantities of 0.200 to 1.000 kg./ m2., more preferably 0.250 to 0.500 kg./m2., and may be applied by brushing, rolling or spraying on to the wood or wood-based materials to be preserved.
The invention will now be illustrated bv the following Examples.
Example 1 A wood preservative was made with the following composition: Pentachlorophenol (technical) 5.5 ', &gamma;-hexachlorocyclohexane 0.5 ' N - dichlorofluoromethylthio N',N' - dimethyl - aminosulphon anilide 0.5 White spirit, boiling range 145 210 C. 59.3 Aromatics, boiling range 150- 213 C. 20.0 % Siccative 0.2 Alkyl resin modified with poly urethane (100%, that is to say reckoned without solvent) 6.0 Swelling clav 6.0 % Methanol 2.0 - 100.00 It was possible to obtain a waterproofing effect (according to U.S. Standard TT-W-5 72) with a WR value of 99%.
The preservative has a preventive action against insects, fungi and beetles.
Example 2 A wood preservative was made with the following composition: Tributyl tin oxide 1.0 N - dichlorofluoromethyl - thio N',N'-dimethvlamino- sulphon anilide ("Dichlofluanide") 0.5 % &gamma;-hexachlorocyclohexane 0.5 ', Aromatics, boiling range 150- 213 C. 80.8% Siccative 0.2 Oil - modified alkyl resin (100 , that is to say reckoned without solvent) 10.0 Hardened castor oil as swelling agent 2.0% Montmorillonite as swelling agent 3.00: Isopropyl alcohol 2.0 ó 100.0 , ', It was possible to achieve a waterproofing effect (according to U.S. Standard TT-W-572) with a WR value of 90 eb.
The preservative acts as a preventive against insects, fungi and beetles.
Example 3 A wood preservative was made with the following composition: Pentachlorophenol 5.5 % y-hexachlorocyclohexane 1.0% White spirit, boiling range 180- 210 G 60.3% Aromatics, boiling range 185 213 C. 20.0% Siccative 0.2% Thixotropic alkyd resin (100%, that is to say reckoned without solvent) 6.0% Montmorillonite 5.0% Methanol 2.0% 100.0% It was possible to achieve a waterproofing effect (according tb U.S. Standard TT-W 572) with a WR value of 96%.
The preservative acts as a preventive against insects, fungi and beetles and also destroys insects.
Example 4 A wood preservative was made with the following composition: y -hexachlorocyclohexane Aromatics, boiling range 187 213 C. 85.0% Polybutyl methacrylate 5.0% Swelling clay 6.0% Benzyl alcohol 3.0% 100.0% It was possible to achieve a waterproofing effect (according to U.S. Standard TT-W572) with a WR value of 98%.
The preservative acts as a preventative against and destroys insects.
Example 5 A wood preservative was made with the following composition: Pentachlorophenol 5.5% 0,0 - diethyl - 0 - - cyano benzylidene - amino) - thiono- phosphate ("Phoxim") 1.5% 2 - isoproxyphenyl - N - methyl carbamate 1.0% N - dichlorofluoromethylthio N',N' - dimethyl - aminosulphon- 0.5 % anilide Aromatics, boiling range 187 2130C. 77A% Copolvmer of vinyl chloride and vinyl isobutyl ether 6.0% Masking perfume 0.1% Methanol 2.0% Montmorillonite 6.0% 100.0% It was possible to achieve a waterproofing effect (according to U.S. Standard TT-W572) with a WR value of 90 ! .
The preservative has a preventive action against insects, fungi and beetles (also against termites), and also combats insects including termites.
Example 6 A wood preservative was made with the following composition: N - dichlorofluoromethylthio N',N' - dimethyl - aminosulphon- anilide 0.6% Tetrachlorophenol 5.5% y-hexachlorocyclohexane 0.8% 1,2,3,4,10,10 - hexachloro - 6-7- epoxy - 1,4,4a,5,6,7,8,8a - octa hydro - 1,4,endo - 5,8 - exo dimethano - naphthalene ("di eldrin") 0.7% Aromatics boiling range 180 - 210 C. 76.4% Phenol resin 7.0% Swelling day 3.5 % Colloidal silica 3.5% Isopropanol 2.0% 100.0 ó It was possible to achieve a waterproofing effect (according to U.S. Standard TT-W572) with a WR value of 90%.
The preservative has a preventive action against insects, fungi and beetles including termites, and also combats insects including termites.
Example 7 A wood preservative was made with the following composition: Pentachlorophenol and tetrachloro phenol (approx. 1:1) 5.5 % y-hexachlorocyclohexane 0.5 % N - dichlorofluoromethylthio N',N' - dimethyl - aminosulphon- 0.5 % anilide Alkyd resin (100% reckoned as the solvent-free resin) 12.0% White spirit, boiling range 145 210 C. 50.2% Aromatics, boiling range 153 213 C. 20.0% Montmorillonite 6.0% Siccative and odour correctors 0.3% Methanol 2.0% Pigment paste 3.0% 100.0% It was possible to achieve a waterproofing effect (according to U.S. Standard TT-W572) with a WR value of 98%.
The preservative has a preventive action against fungi, beetles and insects.

Claims (23)

WHAT WE CLAIM IS: -
1. A preservative for wood or wood-based material, comprising over 50% by weight of a base, all or a major proportion of which is an organic, oily solvent, or mixture of solvents, of low volatility having an evaporation number exceeding 35 as determined in accordance with DIN 53170 and a flash point above 30"C., from 3 to 15% by weight of one or more binders (reckoned on solid material) dispersible or soluble in said base, from 0.3 to 7% by weight of one or more insecticides soluble in said base and/or in said binder(s), from 0.5 to 10% by weight of one or more fungicides soluble in said base and/or in said binder(s), and from 3 to 10% by weight of at least one organic or finely-divided inorganic swelling agent, the proportion by weight of binder(s) to swelling agent(s) being from 4:1 to 1:3.3.
2. A preservative as claimed in Claim 1, wherein the preservative comprises at least 72% by weight of said base.
3. A preservative as claimed in Claim 1 or 2, wherein the preservative comprises 1 to 7 % by weight of fungicide(s).
4. A preservative as claimed in any one of claims 1 to 3, wherein the preservative comprises 0.5 to 4% by wefght of insecticide(s).
5. A preservative as claimed in any one of claims 1 to 4, wherein the preservative comprises from 4 to 10% by weight of said binder(s).
6. A preservative as claimed in any one of claims 1 to 5, wherein the preservative comprises from 4 to 7% by weight of said swelling agent(s).
7. A preservative as claimed in any one of Claims 1 to 6, wherein the proportion by weight of binder(s) to swelling agent(s) is from2:1to1:1.3.
8. A preservative as claimed in any one of Claims 1 to 7, wherein the binder is a linseed oil varnish and/or a resin soluble in the oily solvent(s).
9. A preservative as claimed in any one of Claims 1 to 8, wherein the binder is an alkyd resin, a polyacrylate ester, polypropylene chloride, a copolymer of vinyl chloride and/ or a hydrocarbon, or a mixture of two or more thereof.
10. A preservative as claimed in any one of Claims 1 to 9, wherein the proportion by weight of the solvent(s) to the swelling agent(s) isfrom 10:1 to25:1.
11. A preservative as claimed in any one of Claims 1 to 10, wherein the proportion by weight of the solvents to the swelling agent(s) is from 13:1 to 20: 1.
12. A preservative as claimed in any one of Claims 1 to 11, wherein from 0.1 to 7% by weight of said base comprises a readily volatile or medium volatile organic liquid soluble in said oily solvent(s), and/or one or more plasticisers or fixers soluble in said oily solvent(s), the resulting mixture having an evaporation number exceeding 35 as determined in accordance with DIN 53170 and a flash point above 30"C.
13. A preservative as claimed in Claim 12, wherein the readily volatile or medium volatile organic liquid is a hydrophilic solvent.
14. A preservative as claimed in Claim 13, wherein said hydrophilic solvent is a monohydric or polyhydric alcohol with 1 to 7 carbon atoms, an ether, an ester, a ketone or a mixture of two or more thereof.
15. A preservative as claimed in any one of Claims 1 to 14, wherein the swelling agent is a swelling clay, a montmorillonite, a silica gel, aluminium stearate, calcium stearate, hardened castor oil or a mixture of two or more thereof.
16. A preservative as claimed in any one of Claims 1 to 15, wherein the preservative has a viscosity of 300 to 4,000 cP. (measured at 20"C.).
17. A preservative as claimed in any one of Claims 1 to 16, wherein the preservative has a viscosity of 1,500 to 3,000 cP. (measured at 20 C.).
18. A preservative for wood or wood-based material substantially as hereinbefore described in any one of the foregoing Examples.
19. A method of making the preservative for wood or wood-based material claimed in any preceding claim, wherein the binders in an amount of from 3 to 15% by weight and the swelling agent(s) in an amount of from 3 to 10% by weight are incorporated with the remaining ingredients so as to provide the preservative with a viscosity of 300 to 4,000 cP. (measured at 20"C.).
20. A method as claimed in Claim 19, wherein the method is carried out at a temperature of from 10 to 65"C.
21. A method as claimed in Claim 19 or 20, wherein the method is carried out at a temperature of from 30 to 55"C.
22. A method as claimed in any one of Claims 19 to 21, wherein the swelling agent(s) is(are) stirred into the oily solvent(s), whereafter the fungicide(s) and insecticide(s) are added, then the binder(s) and finally any necessary siccative(s) or other ingredients.
23. A method as claimed in any one of Claims 19 to 22, wherein a hydrophilic solvent is added to the oily solvent's), before, during or after the addition of the swelling agent(s).
GB10765/78A 1977-03-17 1978-03-17 Preservative for wood and wood-based materials Expired GB1564188A (en)

Applications Claiming Priority (1)

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DE2711639A DE2711639C2 (en) 1977-03-17 1977-03-17 Preparations for the preservation of wood and wood-based materials, process for the production of the agent and use of the agent

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AT (1) AT384768B (en)
BE (1) BE864850A (en)
CH (1) CH638426A5 (en)
DE (1) DE2711639C2 (en)
ES (1) ES467838A1 (en)
FI (1) FI780790A (en)
FR (1) FR2383764A1 (en)
GB (1) GB1564188A (en)
IT (1) IT1093382B (en)
NL (1) NL7802770A (en)
YU (1) YU61678A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142239A (en) * 1983-06-27 1985-01-16 Shy Ying Wang Robert Insecticide paint
GB2327430A (en) * 1997-07-23 1999-01-27 Michael Andrew Griffiths Woodcare preservative
WO2001001776A1 (en) * 1999-07-05 2001-01-11 Quantum Extracts Pty Ltd A preservative composition
EP1363761A1 (en) * 2000-12-15 2003-11-26 Koppers Arch Wood Protection (AUS) Pty Limited Material and method for treatment of timber
DE202009009354U1 (en) 2009-07-08 2009-10-01 Steigerwald, Horst Agent for the treatment of woody plants
RU2787053C1 (en) * 2022-03-10 2022-12-28 Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский институт по проблемам гражданской обороны и чрезвычайных ситуаций МЧС России" (Федеральный центр науки и высоких технологий) (ФГБУ ВНИИ ГОЧС (ФЦ)) Composition for wood preservation (options)

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DE2844605A1 (en) * 1978-10-13 1980-04-24 Bayer Ag USE OF N, N-DIMETHYL-N'-P-TOLYL-N'-DICHLORFLUORMETHYLTHIOSULFAMIDE FOR CONTROLLING WOOD-DAMAGING MUSHROOMS
DE3004248A1 (en) * 1980-02-06 1981-08-13 Desowag-Bayer Holzschutz GmbH, 4000 Düsseldorf WOOD PROTECTIVE CONCENTRATE AND PRODUCTS MADE THEREOF FOR PRESERVATION OR. PROTECTING WOOD AND WOOD MATERIALS AGAINST WOOD-DESTROYING AND WOOD-MAKING ANIMALS AND VEGETABLE PLANTS
DE3004319A1 (en) * 1980-02-06 1981-08-13 Desowag-Bayer Holzschutz GmbH, 4000 Düsseldorf WOOD PROTECTIVE CONCENTRATE AND PRODUCT MADE THEREOF FOR THE PRESERVATION OF WOOD AND WOOD MATERIALS
DE3004234A1 (en) * 1980-02-06 1981-08-13 Desowag-Bayer Holzschutz GmbH, 4000 Düsseldorf Wound treatment, wound closure and wound protection agent for trees
DE3130675A1 (en) * 1981-08-03 1983-02-17 Desowag-Bayer Holzschutz GmbH, 4000 Düsseldorf Wood preservative concentrate and agent prepared therefrom for preserving wood and wooden materials
DE3708893A1 (en) * 1987-03-19 1988-09-29 Desowag Materialschutz Gmbh MEDIUM OR CONCENTRATE FOR PRESERVATING WOOD AND WOOD MATERIALS
DE3927806A1 (en) * 1989-08-23 1991-04-11 Desowag Materialschutz Gmbh MEDIUM OR CONCENTRATE FOR PRESERVING WOOD OR WOOD MATERIALS

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FR1234448A (en) * 1958-10-23 1960-10-17 British Petroleum Co Green wood preservation process
DE1918846A1 (en) * 1969-04-14 1970-10-22 Artur Steinhauser Timber preservative
US4062991A (en) * 1973-08-15 1977-12-13 Fosroc A.G. Treatment of wood
FR2251417B1 (en) * 1973-11-19 1977-09-23 Rhone Progil
DE2420235C3 (en) * 1974-04-26 1982-05-27 Riedel-De Haen Ag, 3016 Seelze Use of a combination of active ingredients to protect wood and wood-based materials
DE2515497A1 (en) * 1975-04-09 1976-10-21 Dow Chemical Co Wood treating process using halogenated solvent contg. preservative - by maintaining a constant concn. of agents and amt. of solvent

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142239A (en) * 1983-06-27 1985-01-16 Shy Ying Wang Robert Insecticide paint
GB2327430A (en) * 1997-07-23 1999-01-27 Michael Andrew Griffiths Woodcare preservative
WO2001001776A1 (en) * 1999-07-05 2001-01-11 Quantum Extracts Pty Ltd A preservative composition
EP1363761A1 (en) * 2000-12-15 2003-11-26 Koppers Arch Wood Protection (AUS) Pty Limited Material and method for treatment of timber
EP1363761A4 (en) * 2000-12-15 2005-05-25 Koppers Arch Wood Prot Aus Pty Material and method for treatment of timber
US7361215B2 (en) 2000-12-15 2008-04-22 Koppers Arch Wood Protection (Aust) Pty Limited Material and method for treatment of timber
US7625577B2 (en) 2000-12-15 2009-12-01 Koppers-Hickson Timber Protection Pty Limited Material and method for treatment of timber
DE202009009354U1 (en) 2009-07-08 2009-10-01 Steigerwald, Horst Agent for the treatment of woody plants
RU2787053C1 (en) * 2022-03-10 2022-12-28 Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский институт по проблемам гражданской обороны и чрезвычайных ситуаций МЧС России" (Федеральный центр науки и высоких технологий) (ФГБУ ВНИИ ГОЧС (ФЦ)) Composition for wood preservation (options)

Also Published As

Publication number Publication date
DE2711639A1 (en) 1978-09-21
IT7821229A0 (en) 1978-03-15
DE2711639C2 (en) 1986-04-24
FR2383764A1 (en) 1978-10-13
ES467838A1 (en) 1978-11-01
ATA188078A (en) 1987-06-15
CH638426A5 (en) 1983-09-30
FR2383764B1 (en) 1982-11-19
AT384768B (en) 1988-01-11
YU61678A (en) 1983-02-28
IT1093382B (en) 1985-07-19
FI780790A (en) 1978-09-18
NL7802770A (en) 1978-09-19
BE864850A (en) 1978-09-14

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