Basf Aktiengesellschaft

Basf Se Corporation

Styrolution Gmbh

Styrolution Europe Gmbh

Paulus Schmaus

Christian Schade

Gerhard Olbert

Peter Ittemann

Marco Krüger

Bernhard Czauderna

Karl-Heinz Wassmer

Jan Holoch

Norbert Güntherberg

Rainer Anderlik

Tsung-Chieh Cheng

Joachim Ruch

Jens-Uwe Schierholz

Jürgen Hofmann

Werner Georg Metzger

Matthias Radle

Norbert Modersheim

Marian Mours

Hartmut Heinen

Michael Heeger

Michael Sauer

Rainer Bardon

Christian Rasch

The invention relates to a process and an apparatus for pelletizing polymer melts comprising blowing agent in a pelletizing chamber through which a liquid flows, its pressure being above the ambient pressure. In a first step, the polymer melt is injected into the pelletizing chamber, in a second step the polymer melt is cut via a cutting apparatus into individual pellets and, in a third step, the pellets produced in the pelletizing process are discharged with the liquid from the pelletizing chamber and are then isolated from the liquid. This process also comprises at least one of the following steps:

Method and device for granulating polymer melts containing blowing agent

A process for the distillation of vinylaromatic monomers in the presence of 4-tert-butylcatechol (TBC) and oxygen, wherein no aromatic nitro or amino compound is present in any effective amount. The process is particularly suitable for destabilizing and purifying styrene which has been stabilized with 4-tert-butylcatechol (TBC) for transportation.

Distillation of styrene

A method for the continuous colorimetry of plastics molding compounds, which involves light being introduced, via transmitter light pipes and a sensor head, into the melt of the molding compound and the light reflected there being passed, via receiver light pipes, to a spectrometer or multirange photometer, conjugate transmitter and receiver light pipes in each case being spaced equidistantly.

Method and a device for the continuous colorimetry of plastics molding

Growing community of inventors

Ludwigshafen, Germany

Paulus Schmaus