Basf Aktiengesellschaft

Arnd B&ouml;ttcher

Jochem Henkelmann

Rolf Pinkos

Rudolf Erich Lorenz

Boris Breitscheidel

Thomas Preiss

Melanie Brunner

Gerd Kaibel

Andreas Kramer

Arthur H&ouml;hn

Franz Josef Br&ouml;cker

Heinz R&uuml;tter

Martin Sch&auml;fer

Joaquim Henrique Teles

Peter Bassler

Wolfgang Harder

Norbert Rieber

Martin Fischer

Achim Stammer

Karsten Eller

Georg Heinrich Grosch

Frank Funke

Michael Schulz

Klaus Halbritter

Alois Kindler

Ulrich M&uuml;ller

Shelue Liang

Erhard Henkes

Heike Becker

Andreas Walch

Anne Wenzel

Lucien Thil

Uwe Diehlmann

Reinhard Kaczmarek

Stefan Quaiser

Gert Treiber

Jihong He

Hansj&ouml;rg Nickel

A method of storing and transporting N-vinyl-&egr;-caprolactam is provided wherein the N-vinyl-&egr;-caprolactam is kept in the liquid phase.

Storage and transportation of N-vinyl-epsilon-caprolactam

Preparation of amines

Method for the production of N-alkenyl-amides

Method for producing N-alkenyl amides

A process for purifying N-vinyl-&egr;-caprolactam comprises converting the N-vinyl-&egr;-caprolactam which is to be purified and has a purity of at least 95% by weight into a melt, partially crystallizing the melt and separating the crystals from the mother liquor.

Purification of N-vinyl-&egr;-caprolactam

A process for hydrogenating an unsaturated heterocyclic compound or a mixture of two or more thereof by contacting the unsaturated heterocyclic compounder the mixture of two or more thereof with a hydrogen-containing gas in the presence of a catalyst comprising as active metal at least one metal from transition group VIII of the Periodic Table, applied to a support, wherein the support has macropores.

Method for hydrogenating unsaturated heterocyclic compounds

The invention provides an N-alkenyllactam having at least a 6-membered lactam ring, stabilized by phenothiazine and/or derivatives thereof, and a process for the stabilization of N-alkenyllactams.

Stabilized N-alkenyllactam

Preparation of pyrrole and pyridine

In a process for the suspension hydrogenation of an anthraquinone compound or a mixture of two or more thereof in a reactor in which there are present the working solution in which at least one catalyst is suspended and, in addition, a hydrogen-containing gas phase, the working solution and the gas phase are, in the reactor, passed at least partly through a fitting having openings or channels whose hydraulic diameter is from 0.5 to 20 mm, preferably from 1 to 10 mm, particularly preferably from 1 to 3 mm.

Method for suspension hydrogenation of an anthraquinone compound in a special reactor in order to produce hydrogen peroxide

Method for oxidizing an organic compound containing at least one C-C double bond

Preparation of vinylphosphonic acid compounds

A process for hydrogenating an anthraquinone compound or a mixture of two or more thereof utilizes specific catalysts comprising, as active metal, a metal of transition group VIII of the Periodic Table of the Elements.

Method for hydrogenating an anthraquinone compound

In a process for reacting an organic compound in the presence of a catalyst comprising, as active metal, at least one metal of transition group VIII of the Periodic Table, either alone or together with at least one metal of transition group I or VII of the Periodic Table, in an amount of from 0.01 to 30% by weight, based on the total weight of the catalyst, applied to a support containing macropores, the support comprises, as a support component, boron(III) oxide in an amount of from 10 to 100% by weight, based on the total weight of the support.

Reaction of organic compounds over macroporous supported catalysts comprising boron oxide

A process for purifying alkenyl compounds having a divalent or trivalent heteroatom in the &agr;-position relative to the double bond by distillation comprises carrying out at least two distillations in which the purified alkenyl compounds are obtained from the gas phase by condensation, where the time between the first distillation after the synthesis of the alkenyl compounds and at least one further distillation is at least one day and the purified alkenyl compounds have an APHA color number of <30.

Purification of alkenyl compounds

Method for preparing a catalyst and catalysts prepared accordingly

Growing community of inventors

Frankenthal, Germany

Arnd Böttcher

Growing community of inventors

Frankenthal, Germany

Arnd B&ouml;ttcher

Arnd Böttcher