Abstract:
Halogenopropargylformamides of the formula ##STR1## in which R is hydrogen, alkyl, halogenoalkyl, cycloalkyl, halogenoalkyl, cycloalkyl, alkenyl, alkinyl, halogenoalkinyl, optionally substituted aralkyl and optionally substituted aryl, andHal is halogen.which possess fungicidal and bactericidal properties.
Abstract:
The preparation of a 2-halogeno-3-sulphonyl acrylonitrile from a 2,2-dihalogeno-3-sulphonyl propionitrile and water and the use of the product as a microbicidal agent are disclosed.
Abstract:
A method of combating bacteria comprising applying to the bacteria, or to a habitat thereof, an acylhalogenomethyl thiocyanate of the formula ##STR1## in which R is alkyl with up to 6 carbon atoms, thienyl, phenyl, naphthyl, or phenyl substituted by halogen, hydroxy, alkyl with 1 to 4 carbon atoms, alkoxy with up to 4 carbon atoms, nitro or phenyl,X is halogen, andY is halogen or hydrogen.
Abstract:
An aryl-thiocarboxylic acid thiocyanomethyl ester of the formula ##STR1## wherein R.sup.1 represents an optionally substituted aryl radical; a process for preparing the same, a pesticidal composition comprising such aryl-thiocarboxylic acid thiocyanomethyl ester and the use of such aryl-thiocarboxylic acid thiocyanomethyl ester as a pesticide especially for combatting microbes and molluscs. The novel esters are particularly effective agents for protecting industrial materials and living plants.
Abstract:
The present invention relates to an improved process for the continuous preparation of polyisocyanates with a biuret structure comprising the steps of continuously reacting excess amounts of organic diisocyanates having exclusively aliphatically and/or cycloaliphatically bound isocyanate groups with organic diamines having exclusively aliphatically and/or cycloaliphatically bound primary amino groups at temperatures above 170° C. and adding acid before or during the reaction.
Abstract:
The new halogenated sulphides of the formula ##STR1## in which R.sup.1 to R.sup.8 are identical or different and denote hydrogen or halogen, at least one of the radicals R.sup.1 to R.sup.8 representing halogen,and whereinR.sup.1 and R.sup.2, and/or R.sup.3 and R.sup.4 can optionally form an olefinic bond, andA and B are identical or different and denote nitrile, carboxyl, carboxylate or carboxamide,can be prepared by halogenation of bis-(cyanoethyl) sulphide, or by splitting off hydrogen halide from a halogenated bis-(cyanoethyl) sulphide, or by reacting 3-halogeno-acrylonitriles with sulphides. The new compounds can be active compounds in microbicidal agents.
Abstract:
Alkylene(cycloalkylene)-bis-heterocyclyl-biguanides of the formula ##STR1## in which A and B each independently is a nitrogen-containing heterocyclic radical which is linked via a nitrogen atom,R is an optionally alkyl-substituted cycloalkylene radical, or an alkylene radical which is optionally substituted by cycloalkylene, bicycloalkylene, tricycloalkylene, oxygen, sulphur or the NR.sup.3 group,R.sup.1 and R.sup.2 each independently is hydrogen, alkyl or optionally substituted aralkyl, orR.sup.1 and R.sup.2 together with the two nitrogen atoms on which they are located and R form a heterocyclic ring, andR.sup.3 is hydrogen, alkyl or optionally substituted aralkyl,or salts thereof which possess fungicidal activity.
Abstract:
The invention relates to the use of macroporous weakly-basic anion exchangers, charged with palladium or platinum and based on crosslinked polystyrene, as catalysts for the removal of oxygen from aqueous media by catalytic reduction, a process for the preparation of these catalyst resins, and new macroporous weakly-basic anion exchangers, charged with palladium or platinum and based on crosslinked polystyrene, in which the amino groups are primary or secondary amino groups.
Abstract:
A process for preparing 2,3-dichlorosulphonyl-acrylonitriles is disclosed by reaction of 3-sulphonyl-propionitriles of the formula R.sup.1 --SO.sub.2 --CH.sub.2 --CH.sub.2 --CN wherein R.sup.1 denotes optionally substituted aryl, aralkyl, alkyl or cycloalkyl with a chlorination agent in the presence of a basic catalyst at elevated temperature.