Basf Aktiengesellschaft

Ulrich Kanne

Karl Gerhard Baur

Thomas Papkalla

Hans Peter Rath

Toni Dockner

Thomas Krug

Peter Stops

Heinz Auer

Frans Van Deyck

Jurgen Heners

Andre De Vos

A process for the preparation of highly reactive polyisobutenes is described, in which isobutene is polymerized in the presence of a complex of boron trifluoride and at least one cocatalyst in a liquid organic phase at a reaction temperature of from &#x2212;60 to &#x2212;4&#xb0; C. and water is added in two stages to the organic phase for catalyst deactivation and catalyst extraction.

Method for producing highly reactive polyisobutenes

Method for producing low-molecular, highly reactive polyisobutylene

A process for producing cyclopentane and cyclopentene by fractional distillation of partly hydrogenated pyrolysis gasoline, in which

Production of cyclopentane and/or cyclopentene from partially

A process for the oxidation of ammonium ions and organic carbon in wastewaters containing ammonium ions and organic carbon by means of nitric acid at from 100.degree. to 350.degree. C., wherein the molar ratio between organic carbon and ammonium nitrogen is adjusted to a value in the range from 0.3:1 to 4:1 by addition of organic carbon or ammonium nitrogen.

Oxidation of ammonium ions and organic carbon in wastewaters

A process for breaking down aromatic nitro compounds in waste waters from plants for the production of nitrobenzene by treatment with nitric acid is carried out at from 180.degree. to 350.degree. C. and under a pressure of from 40 to 250 bar.

Breakdown of waste waters containing aromatic nitro compounds

Growing community of inventors

Frankenthal, Germany

Ulrich Kanne