Basf Lacke+farben Ag

Basf Aktiengesellschaft

Thomas Perner

Eberhard Schupp

Rolf Osterloh

Thomas Schwerzel

Klaas Ahlers

Hans Peter Rath

Helmut Mach

Eckard Schauss

A process is described for preparing polyisobutene having a low halogen content, in which isobutene is polymerized in the presence of a catalyst which comprises a halogenated Lewis acid, the catalyst is removed and/or deactivated, and the resulting polyisobutene is contacted with a zeolite of an average pore size of from 5 to 15 &#x212b;.

Method for producing highly reactive, low halogen polyisobutenes

A process is described for preparing polyisobutene having a content of terminal vinylidene groups of at least 75 mol % by polymerizing isobutene or isobutenic hydrocarbon mixtures in the liquid phase in the presence of a boron trifluoride complex catalyst of the composition(BF).L.L.Lwhere Lis water, a primary C&#x2013;C-alkanol and/or a secondary C&#x2013;C-alkanol, Lis at least one aldehyde and/or one ketone, Lis an ether having at least 5 carbon atoms, a secondary alkanol having at least 6 carbon atoms, a primary alkanol having at least 6 carbon atoms and/or a tertiary alkanol, the b:a ratio is in the range from 0.9 to 3.0, the c:a ratio is in the range from 0.01 to 0.5, and the d:a ratio is in the range from 0 to 1.0.

Method for producing polyisobutene

A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with acid is obtainable by reacting

Synthetic resin with basic nitrogen groups, preparation and use thereof

A synthetic resin which carries basic nitrogen groups and is water-dilutable by protonation with an acid, containing

Synthetic resin with basic nitrogen groups from resins reacted with the

A binder which is water-dilutable on protonation with acid and obtainable by a reaction of

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Ludwigshafen, Germany

Thomas Perner