Bayer Aktiengesellschaft

Otto Netz

Harold Heller

Herbert Corte

Michael Lange

Peter M Lange

The invention relates to a process for removing oleophilic odor- and tasteproducing substances from water by treating the water with an insoluble, macroporous adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei, the polymer containing chloromethyl groups as substituents; some of the chlorine atoms in the chlormethyl groups can be reacted with ammonia or amines, furthermore the invention relates to the adsorber resins to be used in the claimed process.

Process for treating drinking water and sewage

Nitrogenous fertilizer compositions comprising a cation exchanger in the form of a salt thereof with a basic carbonic acid derivative containing at least 2 nitrogen groupings, e.g., a salt formed by attaching to a cation exchange material, guanidine, diguanidine, guanylurea, biuretdicyanamide, urazone, melamine, guanine or ammeline, are outstandingly effective in providing gradually-acting, long-lasting fertilizing action.

Nitrogenous fertilizer compositions

Anion-exchange resins made by aminoalkylating an alkylatable resin in solvent-swollen condition with bis-carboxyimidomethyl ethers in a reaction mixture containing essentially unhydrated SO.sub.3 that can be added in the form of a solution in H.sub.2 SO.sub.4 or other solvent or as a complex with the alkylating ether, or in undissolved condition. The acylaminoalkylated product thus formed is deacylated as by hydrolysis and can have the resulting amino group alkylated and even quaternized.

Process for the preparation of anion exchangers by aminoalkylation of

The invention relates to a process for removing oleophilic odor- and tasteproducing substances from water by treating the water with an insoluble, macroporous adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei, the polymer containing chloromethyl groups as substituents; some of the chlorine atoms in the chlormethyl groups can be reacted with ammonia or amines; furthermore, the invention relates to the adsorber resins to be used in the claimed process.

Insoluble adsorber resin suitable for treating drinking water and sewage

The invention concerns new, crosslinked, macroporous, vinyl-aromatic plastic materials containing thiourea groups, to processes for their production and to their use for adsorbing metal compounds, especially noble metal and mercury compounds.

Resins for separating heavy metals consisting of

A fertilizer for the long term and uniform supply of plants with micronutrient elements of atomic numbers 24 to 30, comprising at least one anion exchanger charged with anionic chelated ions of at least one element having having an atomic number of from 24 to 30; furthermore a process for the long term and uniform supply of plants with micronutrient ions of elements of atomic numbers 24 to 30, wherein an anion exchanger charged with said ions is applied to the plants or their environment.

Growing community of inventors

Leverkusen, Germany

Otto Netz