1,2,3-Triazole carboxylic acid amides and biocidal compositions containing the same

1,2,3-triazole carboxylic acid amides of the formula ##STR21## in which R.sub.1 is C.sub.1 -C.sub.10 -alkyl, C.sub.2 -C.sub.8 -alkenyl or alkinyl or is aryl-C.sub.1 -C.sub.3 -alkyl which may be substituted in one or several places by C.sub.1 -C.sub.6 -alkyl and/or halogen and/or C.sub.1 -C.sub.6 -alkoxy and/or nitro and/or trifluoromethyl,

• R.sub.2 is hydrogen or C.sub.1 -C.sub.10 alkyl in which the chain may be interrupted in one or several places by oxygen- or sulfur atoms and which may be substituted by halogen,
• R.sub.3 and R.sub.4 are the same or different and are hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkyl which is substituted by halogen or C.sub.1 -C.sub.3 -alkoxy, C.sub.2 -C.sub.8 -alkenyl or alkinyl, aryl-C.sub.1 -C.sub.3 -alkyl which may be substituted in one or several places by C.sub.1 -C.sub.6 -alkyl and/or halogen and/or C.sub.1 -C.sub.6 -alkoxy and/or nitro and/or trifluoromethyl, a C.sub.3 -C.sub.8 cyclo aliphatic hydrocarbon group which may also be substituted in one or several places by C.sub.1 -C.sub.6 -alkyl, or an aromatic hydrocarbon group which may be substituted in one or several places by C.sub.1 -C.sub.6 alkyl and/or halogen and/or C.sub.1 -C.sub.6 -alkoxy and/or nitro and/or trifluoromethyl, or wherein
• R.sub.3 and R.sub.4 together with the adjoining nitrogen atom conconstitute a 3 to 7-member ring which may include further oxygen, sulfur or nitrogen atoms and wherein
• n is 0, 1 or 2,
• or an isomeric mixture from any of the listed compounds.