Abstract: Sulfonic acid group-containing polyaspartic acid derivatives, some of which are novel, having repeating units of the structures I and II ##STR1## in whichR.sup.1 has the meaning given in the description, are suitable for water treatment and as a detergent additive.

Abstract: Pesticidal substituted 2-arylpyrroles of the formula ##STR1## in which n represents 0, 1 or 2,Ar represents optionally substituted aryl,R.sup.1 and R.sup.2 independently of one another represent hydrogen or halogen, but at least one of the two radicals R.sup.1 or R.sup.2 represents halogen,R.sup.3 represents hydrogen, halogen or optionally substituted alkyl,X.sup.1 and X.sup.2 independently represent hydrogen or halogen andR.sup.4 represents hydrogen or ##STR2## (R.sup.5 and R.sup.6 having various meanings). The compounds of the formulas ##STR3## are also new.

Abstract: There are provided new substituted 3-aryl-pyrrolidine-2,4-diones of the formula ##STR1## in which X represents hydrogen, alkyl, halogen or alkoxy,Y represents hydrogen, alkyl, halogen, alkoxy or halogenoalkyl,Z represents alkyl, halogen or alkoxy,n represents a number from 0-3,R represents hydrogen or the groups--CO--R.sup.1, --CO--O--R.sup.2in whichR.sup.1 and R.sup.2 have the meanings given in the text of the application,A represents optionally halogen-substituted alkyl, alkenyl, alkinyl, alkoxyalkyl, polyalkoxyalkyl, alkylthioalkyl and cycloalkyl which is optionally interrupted by hetero atoms, or represents arylakyl which is optionally substituted by halogen, alkyl, halogenoalkyl, alkoxy or nitro,B represents optionally substituted aryl or benzyl.The new compounds of the formula (I) have highly pronounced insecticidal, acaricidal, fungicidal and antimycotic properties.

Abstract: It is possible with the aid of various Streptomycetes species to prepare new compounds having a furan or lactone structure. These compounds have a pharmacological, especially antibiotic, action.

Abstract: New substituted 2-arylpyrroles of the general formula (I) ##STR1## in which R.sup.1 represents cyano or nitro,R.sup.2 represents the radicals ##STR2## wherein X.sup.1, X.sup.2, X.sup.3 and X.sup.4 can be identical or different and represent hydrogen, halogen or alkyl,R.sup.4 represents halogen andn represents a number from 0 to 3,R.sup.3 represents hydrogen or in each case optionally substituted alkyl, alkenyl or alkinyl,Y.sup.1 represents halogen andY.sup.2 represents halogen, alkyl or halogenoalkyl,are provided.The new compounds (I) have a very potent activity against animal pests, in particular against insects, arachnids and nematodes.

Abstract: New substituted 2-arylpyrroles of the general formula (I) ##STR1## in which R.sup.1 represents cyano or nitro,R.sup.2 represents the radicals ##STR2## wherein X.sup.1, X.sup.2, X.sup.3, and X.sup.4 can be identical or different and represent hydrogen, halogen or alkyl,R.sup.4 represents halogen andn represents a number from 0 to 3,R.sup.3 represents hydrogen or in each case optionally substituted alkyl, alkenyl or alkinyl,Y.sup.1 represents halogen andY.sup.2 represents halogen, alkyl or halogenoalkyl, are provided.The new compounds (I) have a very potent activity against animal pests, in particular against insects, arachnids and nematodes.

Abstract: New furans and lactones from streptomycetes, a process for the preparation thereof, and the use thereof.It is possible with the aid of various streptomycetes species to prepared new compounds having a furan or lactone structure. These compounds have a pharmacological, especially antibiotic, action.

Abstract: Fungicidal trisubstituted 1,2,4-triazine-3,5-diones of the formula ##STR1## in which Ar represents optionally substituted aryl,R.sup.1 represents an optionally substituted aliphatic of cycloaliphatic radical andR.sup.2 represents an optionally substituted aliphatic radical.Many of the intermediates therefor where R.sup.2 is hydrogen and/or the 3-O is replaced by 3-S are also new.

Abstract: Fungicidal trisubstituted 1,3,5-triazine-2,4,6-triones of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are different radicals andR.sup.1 represents an optionally substituted aliphatic or cycloaliphatic radical,R.sup.2 represents an optionally substituted aliphatic radical andR.sup.3 represents an optionally substituted aralkyl radical.