Degussa Aktiengesellschaft

Huels Aktiengesellschaft

Chemische Werke Huls Aktiengesellschaft

Creanova Spezialchemie Gmbh

Rainer Elm

Stephan Kohlstruk

Manfred Kreczinski

Hans-Werner Michalczak

Martina Ortelt

Werner Freitag

Erwin Vangermain

Wilfried Paulen

Horst Ueberschaer

Claus-Dieter Mengler

Wilhelm Brauckmann

Wolfgang Sasse

Karin Sokolowski

Thomas Weihrauch

Helmut Kehr

Klaus Behrendt

Matthias Schleinzer

Adolf Kuhnle

Silvia Herda

The invention relates to a multistage process for continuous and phosgene-free preparation of cycloaliphatic diisocyanates.

Multistage continuous preparation of cycloaliphatic diisocyanates

A multistage process for continuous and phosgene-free preparation of cycloaliphatic diisocyanates.

A process for continuous phosgene-free preparation of cycloaliphatic diisocyanates.

A water-soluble or water-dispersible binder based on polybutadienes which is modified with at least 5% by weight of maleic anhydride and wherein at least 30% of the anhydride groups are present as imide groups from reaction with an amino carboxylic acid.

Aqueous binders based on polybutadiene

Process for the continuous preparation of hydroxyalkylamides Process for the continuous preparation of hydroxyalkylamides from carboxylic esters and alkanolamines, wherein the reaction of the starting materials is carried out in an extruder or intensive mixer by intensive mixing and brief reaction with supply of heat and simultaneous removal of the alcohol formed and the final product is then isolated.

Process for the continuous preparation of hydroxyalkylamides

A protective material, based on poly-.alpha.-olefins, capable of easy application in molten form, is distinguished by a balanced pattern of properties, good adhesion and good recycling capability. The present protective materials contain (I) not less than 50% by weight of one or more largely amorphous poly-.alpha.-olefins, composed of (a) 3 to 75% by weight of one or more .alpha.-olefins containing 4 to 10 carbon atoms, (b) 25 to 95% by weight of propene, and (c) 0 to 20% by weight of ethene; (II) not more than 30% by weight of other olefin homo- and copolymers which may be either largely amorphous or preferably partially crystalline; and (III) not more than 40% by weight of additives which are standard in the plastic sector. Such protective materials can be used in particular in the underfloor region of motor vehicles.

Protective material capable of application in molten form

The activity and the service life of supported silver catalysts used in the preparation of ethylene oxide by the catalytic vapor phase oxidation of ethylene with molecular oxygen are extended by using mixtures of:

Supported silver catalysts mixed with promoter metal compounds for the

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Marl, Germany

Rainer Elm