Preparation of arthropodicidally active substituted triazine-2,4-diones

Claim 1

A substituted triazine-2,4-dione of the formula ##STR26## in which R in both instances is identical and represents alkyl with up to 20 carbon atoms carrying one or more substituents selected from the group consisting of halogen, CN, aryloxy, alkoxy, halogenalkoxy, alkylmercapto, halogenalkylmercapto or represents furthermore phenyl carrying one or more substituents selected from the group consisting of halogenoalkyl, optionally halogen-substituted phenoxy, alkoxy, halogenoalkoxy, alkylmercapto, alkoxycarbonylalkenyl and halogenoalkylmercapto radicals and which can optionally be further substituted by halogen, or represents phenylsulphonyl which is optionally substituted by halogen, nitro, CN, monoalkylamino, dialkylamino, alkylmercapto or alkoxy, or represents alkylsulphonyl which is optionally substituted by halogen or CN, and R 1 represents hydrogen or alkyl with 1-10 carbon atoms or cycloalkyl with 5-10 carbon atoms, either of which is optionally substituted by halogen, alkoxy, cyano or nitro, or represents phenyl or naphthyl which are optionally substituted by halogen, nitro, cyano, alkyl with 1-10 carbon atoms, halogenoalkyl, alkoxy or alkylmercapto.