Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1997-08-27
1999-03-09
Pak, John
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
514 63, 514359, 514384, 514557, 514558, 514560, 514574, 514663, 106 1832, 252401, 252403, A01N 43647, A01N 43653, A01N 3304, A01N 3702
Patent
active
058801430
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/EP95/04434, filed on Nov. 11, 1995.
It is known that dimethylalkylamines, for example in the form of salts of long-chain monocarboxylic acids, can be used for application in oily, solvent-containing wood preservatives (EP 147 976). The same applies to mixtures of fenpropimorph and water-insoluble acids (EP-B-0 402 697).
It is also known that dimethylalkylamine, tridemorph, fenpropimorph or their mixture, an emulsifier and a water-insoluble acid can be used as water-soluble wood preservatives (EP-A-0 370 371).
It is also known that dimethylalkylamine, tridemorph, fenpropimorph, a water-insoluble acid and a water-soluble acid can be used as water-soluble concentrates in wood preservation (DE-A-3 736 298).
Mixtures based on dimethyl-coconut fatty amine, 2-ethylhexanoic acid, propiconazole and an emulsifier have also been described for use as wood preservatives.
However, these water-soluble wood preservatives have considerable disadvantages in application. They have a corrosive effect on iron and steel and dissolve, inter alia, rust and other iron compounds from the surfaces of the impregnation tank with formation of emulsifiable or water-soluble iron salts, so that application solutions acquire a strong brown discoloration in a short time. Consequently, the wood to be impregnated is in turn influenced in its color and is changed, resulting, for example, in a strong gray discoloration owing to reaction of the iron compounds with wood constituents. At the same time, the pH of the appliction solution increases; the result may be instability of the solutions, including phase separation.
It has now been found that the performance characteristics of the water-soluble wood preservatives are considerably improved if wood preservatives which contain a dimethylalkylamine, an aliphatic C.sub.8 -C.sub.14 -dicarboxylic acid and a triazole compound are used. In addition to the excellent performance characteristics, the wood preservatives have very good activity against wood-destroying Basidiomycetes.
The novel wood preservatives (concentrates) are water-miscible and, on dilution of the concentrates with water, form clear to slightly opaque solutions. Advantageously, the aqueous solutions (impregnating solutions) obtained after dilution of the concentrates with water have a pH of from 4 to 8, preferably from 5 to 7. The aqueous impregnating solutions obtained are distinguished by the fact that the active components penetrate very effectively into the wood to be impregnated and thus result in effective wood preservation.
A dimethylalkylamine is an N,N-dimethyl-N-alkylamine whose alkyl radical contains, for example, 6 to 20 carbon atoms. Dimethylalkylamines having 12 or 14 carbon atoms in the alkyl radical are preferred. In addition to the pure dimethylalkylamines, mixtures, for example mixtures of dimethyl-C.sub.12 -alkylamine and dimethyl-C.sub.14 -alkylamine (dimethyl-(C.sub.12 /C.sub.14 -alkylamine), may also be used.
The novel wood preservatives contain C.sub.8 -C.sub.20 -dicarboxylic acid, preferably C.sub.8 -C.sub.14 -dicarboxylic acids. Suitable dicarboxylic acids are, for example, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid and thapis acid. Sebacic acid is particularly advantageously used.
Examples of suitable triazoles are: oxirane (epoxiconazole), propan-2-ol, (hexaconazole), (flutriafol), (RS)-4-(4-chlorophenyl)-2-phenyl- 1H-1,2,4-triazole, 3-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1- yl)quinazolin-4(3H)-one, (RS)-2,2-dimethyl-3-(2-chlorobenzyl)-4- (1H-1,2,4-triazol-1-yl)butan-3-ol, bitertanol, triadimefon, triadimenol, cyproconazole, dichlobutrazol, difenoconazole, diniconazole, etaconazole, flusilazole, penconazole, tetraconazole, bromuconazole, metconazole, fenbendazol, fensilazol, 1-(2-(2,4,-dichlorophenyl)-1,3-dioxolan- 2-ylmethyl)-1H-1,2,4-triazole (azaconazole), 1,2,4-triazole (propiconazole), .alpha.-tert-butyl-a-(p-chlorophenylethyl)- H-1,2,4-triazole-1-ethanol (tebuconazole).
Propiconazole, penconazole, cyproconazole,
REFERENCES:
patent: 5179116 (1993-01-01), Goettsche et al.
patent: 5186947 (1993-02-01), Goettsche et al.
WPIDS Abstract, accession No. 96-112575, abstracting JP 8-12504 (Jan. 16, 1996).
WPIDS Abstract, accession No. 96-035788, abstracting JP 7-304609 (Nov. 21, 1995).
Goettsche Reimer
Kardorff Uwe
Kober Reiner
BASF - Aktiengesellschaft
Pak John
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