Basf Aktiengesellschaft

Hans J Wilfinger

Gerald Neubauer

Gerhard Frank

Paul Duffner

Peter Rudolf

Manfred Ohlinger

Emil Pfannebecker

Wolfgang Harder

Hugo Fuchs

Werner Bertleff

Josef Ritz

Robert Maerkl

Gunter Schuch

Paul Panitz

Gebhard Kuehn

David Weatherford

Recovery of caprolactam and of an alkali metal carbonate from distillation residues which are obtained in the purification of caprolactam and contain caprolactam and/or oligomers and/or polymers of caprolactam and also alkali metal hydroxides by

Recovery of caprolactam from distillation residues obtained in the

Alkyl pentenoates are prepared by reacting butadiene with carbon monoxide and an alkanol in the presence of a cobalt carbonyl complex and a tertiary, aromatic heterocyclic nitrogen base at from 80.degree. to 160.degree. C. under from 100 to 1,000 bar in the presence of from 0.1 to 10% by volume of hydrogen, based on the amount of carbon monoxide used.

Preparation of alkyl pentenoates

Molded catalyst materials contain metallic cobalt and/or nickel particles and a lubricant, the said particles being obtained by reduction of cobalt oxide and/or nickel oxide particles containing less than 0.1% by weight of alkali metal oxides and/or alkaline earth metal oxides at .ltoreq.500.degree. C., and the molded catalyst material having an indentation hardness greater than 300 kp/cm.sup.2.

Molded catalyst materials containing reduced cobalt and/or nickel

Molded iron catalysts which contain metallic iron particles, obtained from anisometric iron oxide particles by contact with hydrogen at .ltoreq.500.degree. C., and a lubricant, are prepared.

Molded iron catalyst and its preparation

Saturated primary amines are prepared by reacting a nitrile with hydrogen at elevated temperature under superatmospheric pressure in the presence of ammonia and a metallic iron catalyst which has been obtained by reducing anisometric iron oxide particles with hydrogen at not more than 500.degree. C.

Preparation of primary amines

Growing community of inventors

Schifferstadt, Germany

Hans J Wilfinger