An evaporation inhibitor for spray mixtures of agricultural chemicals applied by the LV method in the form of a wax-containing aqueous dispersion or a self-emulsifying solution in organic solvents has the following composition: from 15 to 50% by weight of a wax or wax mixture, from 4 to 20% by weight of nonionic and/or anionic emulsifiers, from 19.5 to 81% by weight of water and/or organic solvents from the group comprising hydrocarbons, esters and ketones having boiling points of from 70 to 280 DEG C, from 0 to 5.5% by weight of other auxiliaries, from 0 to 5.0% by weight of amines or alkali. It may be used in an amount of from 1 to 15% by weight, preferably 5 to 10% by weight as an additive to spray mixtures containing agricultural chemicals adjusted to in-use concentrations.

An evaporation inhibitor

An evaporation inhibitor composition which consists essentially of: A. from about 15 to about 50% by weight of a wax mixture containing at least about 5% by weight, based on the wax mixture, of a wax component having an acid number of from about 10 to about 95 mg KOH/g wax; B. from about 4 to about 20% by weight of at least one nonionic and/or anionic emulsifier; C. from about 19.5 to about 81% by weight of water and/or at least one organic solvent selected from the group consisting of hydrocarbons, esters, and ketones having a boiling point of from about 70° to about 280° C.

Evaporation inhibitor compositions

A wood preservative composition comprises a wood preservative such as a chromated copper arsenate-oil emulsion or an ammoniacal copper arsenate emulsion having about 0.1 to 15 percent chromated copper arsenate, ammoniacal copper arsenate, or ammoniacal copper zinc arsenate, about 1 to 20 percent oil and about 0.3 to 2.5 percent (based on total final emulsion) surfactant material. The first surfactant preferably has a hydrophilic lipophilic balance of about 7 to 9.5 and a second surfactant has a hydrophilic lipophilic balance of about 15 to 20. It is preferred that the first surfactant have an ethoxyl mole ratio less than about 5 and that the second surfactant have a mole ratio greater than about 15. The surfactant material may be composed of a first surfactant having an average mole ratio of about 1 to 5 and a second surfactant having an average mole ratio of about 20 to 100. The composition is storage stable for extended periods and provides a number of beneficial properties for wood products. A preferred group of surfactants for use in the present invention are ethoxylated alkylphenols or ethoxylated alkyl alcohols. A related method includes establishing an emulsion in oil of a first surfactant having an ethoxyl mole ratio less than about 5 and establishing in water a second surfactant having a mole ratio greater than about 15. The solutions are admixed and about 0.1 to 15 percent chromated copper arsenate, ammoniacal copper arsenate, or ammoniacal copper zinc arsenate is introduced into the mixed emulsions. The first and second surfactants may be emulsified in the oil which is subsequently admixed with the water, if desired. The chromated copper arsenate, ammoniacal copper arsenate or ammoniacal copper zinc arsenate bearing mixed emulsions are then introduced into wood. The composition and method are particularly useful with respect to wood products which will be used over prolonged periods in outdoor or other potentially hostile environments and are particulalry useful for utility poles, building products, and marine applications.

Wood preservative composition and method of treating wood with same

1. Wood preservative concentrate consisting of an emulsion or solution of I. 5-50, preferably 10-35 parts by weight a) of a not easily volatilized solvant (mixture) with a flashpoint over 30, preferably over 55 degrees C, b) of a water-insoluble insecticide (mixture) of a carbamate, a phosphoric acid ester, a thiophosphoric acid ester, a dithiophosphoric acid ester or a thionophosphoric acid ester, a chlorimated hydrocarbon, a pyrethroid and/or of endosulfan and/or of water-insoluble fungicide (mixture) of a tetravalent organotin compound, an ester of a chlorinated phenol, a 1-trityl-1,2,4-triazole of the general formula see diagramm : EP0035096,P9,F2 in which R stands for a fluorine, chlorine or bromine atom, a trifluoromethyl-, nitro- or cyano-group, an alkyl group with up to 4 carbon atoms and _n has the value 1 or 2, and their salts with organic or inorganic acids, a salt of the N-nitroso- N-cyclohexylhydroxylamine or (N-cyclohexyl-diazeniumdioxy)- metal compound, preferably of an aluminium compound, a N,N-dimethyl-N'- phenyl-N'-(fluorodichloromethyl-thio)-sulphamide and/or N,N-dimethyl-N'-p-tolyl-N'- (di-chlorofluoromethylthio)-sulphamide, 2,5- dimethyl-furan-3-carboxylic acid anilide or cyclohexylamide or N-cyclohexyl-N-methoxy-2, 5-dimethylfuran-3-carboxylic- acid amide and/or 1-(p-chlorophenoxy)-3,3-dimethyl-1-(1,2,4,-triazolyl)- 2-butanone, II. 95-50, preferably 90-65 parts by weight, c) of a non-ionic emulsifier (mixture) of an ethoxylated phenol-, an ethoxylated alkyl-, aryl-, arylalkyl- phenol or an ethoxylated phenol containing one or more other side groups, an ethoxylated organic acid, preferably an ethoxylated nonylphenol and/or an ethoxylated fatty acid and d) a water-soluble cationic wetting agent (mixture) or solubilising agent of a fungicidally active arylalkylammonium compound, preferably a trialkylarylalkylammonium compound and/or a fungicidally active tertiary amine salt and, if required, water.

Concentrate for protecting wood and agents produced therefrom for the preservation of wood and wood materials

A method of treating a wood object against unwanted effects caused by fire or, correspondingly, micro-organisms or insects. The wood object is treated with a mixture which comprises at least one active substance, which active substance or active substances are mixed into a liquid intermediate substance before use. A liquid dispersion of an agent that increases the hydrophobicity of wood, such as an aqueous dispersion of alkyl ketene dimer or alkenyl diketene dimer, is added into this mixture. By treating the wood object with a mixture that is generated in this way, the active substance will remain in the wood, and it is possible to prevent or significantly delay rainwater flushing it out.

Method of treating a wood object and an object thus obtained

1,136,082. Preserving wood. HICKSON'S TIMBER IMPREGNATION CO. (GB) Ltd. 27 Jan., 1966 [22 Feb., 1965], No. 7565/65. Heading A5E. [Also in Divisions B1 and Dl] An aqueous wood impregnant contains 0.1-3% of dispersed paraffin wax of mp 40-50‹C, 0.008-0.36% of a non-ionic wax emulsifying agent, and 1-10% of a preservative. The emulsifying agent is a condensate of a C 10-18 fatty alcohol or a C 7-11 alkyl phenol, has one or more polyoxyethylene chains containing at least 25 ethylene oxide units and has a hydrophilic balance of 12-22. The preservative may be a composition containing sodium fluoride, arsenic pentoxide, sodium arsenate, sulphate or arsenate of copper or zinc, chromic acid, sodium chromate, or sodium or potassium dichromate. The composition may also contain monoammonium or diammonium phosphate, ammonium sulphate, boric acid, or sodium tetraborate as fire retardants. It may also contain petroleum jelly of mp 38-56‹C in a ratio of wax to jelly of 45:55 to 70:30. The wood may be impregnated by the alternate application of pressure and vacuum.

James Nicholson

Papers

Wood-treatment compositions