- Wood preservatives
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Wood preservatives having biocidal properties which include quaternary ammonium compounds of general formula (I): wherein R1 is a C8-18-alkyl group or an optionally substituted benzyl group, R2 is a C8-18-alkyl group, R3 is a C1-4-alkyl group or a group of the formula —[CH2—CH2—O]n—H, R4 is a C1-4-alkyl group, n is a number from 0.5 to 8, preferably from 1 to 5, and A?is the anion of an organic carboxylic acid which contains 2 to 12 C atoms and carries at least one hydroxyl, amino or sulfonic acid group. The wood preservatives also penetrate deeply into the wood without the use of pressure, and have only a mild corrosive action on metals. Furthermore, a process for treating timbers with these compositions, concentrates for the preparation thereof, the use of new and known quaternary ammonium compounds in wood preservatives and new quaternary ammonium compounds and their use as biocides.
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- Organosilyl compounds and their use as fungicides
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Organosilyl compounds of the general formula I STR1 where R1, R2 and R3 are alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or substituted aryl, R4 and R5 are alkyl or hydrogen and Y is CH2, oxygen, nitrogen or alkyl-substituted nitrogen, their salts and fungicides containing these compounds.
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- Reaction of Guanidinium Salts with Alkyl Bromides and Acid Chlorides
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The guanidinium salt 1a reacts with alkyl bromides 2a-g and acid chlorides 2h-k to give the nitriles 3a-g and the acyl cyanides 3h-k, respectively.Acyl isocyanates 4a,b have been obtained from the guanidinium cyanate 1d and the acid chlorides 2h,l.Reaction of the alkyl bromides 2b,c,m,n and acid chlorides 2h,l with the guanidinium thiocyanate 1e affords alkyl thiocyanates 5a-d and acyl isothiocyanates 6a,b, respectively.
- Kantlehner, Willi,Kapassakalidis, Johannis J.,Speh, Peter,Braeuner, Hans-Juergen
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p. 389 - 393
(2007/10/02)
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