Basf Aktiengesellschaft

Thomas R&uuml;hl

Jochem Henkelmann

Norbert Niessner

Konrad Knoll

Boris Breitscheidel

Hermann Gausepohl

Andreas Henne

Sabine Weiguny

Paul Naegele

Rolf Lebk&uuml;cher

Andreas Deckers

Bernd Wenderoth

Harald Rust

Roger G Klimesch

Ralf-Thomas Rahn

Peter Reuter

Bernd Bessling

Matthias Kummer

Susanne Stutz

Werner Peschel

Peter M Lorz

Hans-Joachim M&uuml;ller

Bernhard Ulrich

Jean Werner Knab

On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or in the vicinity of the top of the distillation column and the on-spec phthalic anhydride is removed from the column via a side take-off.

Method for producing phthalic anhylic anhydride according to specifications

A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of the catalyst, applied to a support, wherein from 10 to 50% of the pore volume of the support comprises macropores having a pore diameter in the range of from 50 nm to 10,000 nm and from 50 to 90% of the pore volume of the support comprises mesopores having a pore diameter in the range of from 2 to 50 nm, the sum of said pore volumes being 100%, and said catalyst as such.

Process for reacting an organic compound in the presence of a supported ruthenium catalyst

In a process for isolating &agr;-ethynyl carbinols from the liquid reaction mixture from the addition of acetylene onto &agr;,&bgr;-unsaturated carbonyl compounds by distillation, the distillation is carried out continuously, the feed stream is introduced into the middle section of a distillation column (K), the major part of the water is distilled off azeotropically together with the solvent at the top of the column, and the &agr;-ethynyl carbinol target product is taken off below the feed point to the column.

Isolation of &agr;-ethynyl carbinols by distillation

Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, preferably fuel and propellant compositions, especially petroleum middle distillates, and also a fuel and propellant composition comprising a principal quantity of a fuel and propellant and that quantity of a copolymer as above which is effective in improving the flow properties.

Ethylene-vinyl formate copolymers, process for their preparation, their use as flow improvers, and fuel and propellant compositions comprising them

Growing community of inventors

Frankenthal, Germany

Thomas Rühl

Growing community of inventors

Frankenthal, Germany

Thomas R&uuml;hl

Thomas Rühl