Ruhrchemie Aktiengesellschaft

Hoechst Aktiengesellschaft

Detlef Deymann

John V Hobes

Jurgen Weber

Wolfgang Payer

Claus Kniep

Detlef Kampmann

A process for the preparation of N-methylalkylamines of the formula CH.sub.3 --NH--CH.sub.2 --R in which R is an aliphatic radical having 1 to 3 carbon atoms, by reacting an aldehyde of the formula R--CHO with an amine of the formula R'--NH.sub.2 to give a Schiff base, removing the water of reaction, and reacting the Schiff base with methylamine and hydrogen in the presence of a hydrogenation catalyst.

Process for the preparation of N-methylalkylamines

The invention relates to the preparation of free-flowing homopolymer and copolymer waxes by heating the solid or molten waxes in aqueous ammonia solution.

Process for preparing free-flowing ethylene homopolymers or copolymer

A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 .mu.m which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing 3 to 10 carbon atoms, heating the same with a mixture of said ketone up to a temperature above the softening point of the polymer and thereafter cooling the same.

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Essen, Germany

Detlef Deymann