Covestro Deutschland Ag

Bayer Materialscience Ag

Lanxess Deutschland Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Ralph Weber

Leslaw Mleczko

Heiko Hocke

Martin Ehrig

Elmar Bramer-Weger

Reinhard Halpaap

Frank Richter

Aurel Wolf

Josef Sanders

Ulrich Meisen

Michael Merkel

Sigurd Buchholz

Robert Maleika

Reiner Rudolf

Rainer Bellinghausen

Helmut Meyer

Armin Schymura

Georg Lamp

Dirk Weiβenberg

Anna-Marie Zorn

Johannes Leonhäuser

Sebastian Hoch

Martin Schmid

Matthias Voetz

Elsa Karoline Schadlich

Pascal Scherpian

Dirk Weißenberg

Elsa Karoline SCHÄDLICH

The present invention relates to a bulk material comprising solid diisocyanate, especially naphthalene 1,5-diisocyanate or p-phenylene diisocyanate, to a process for production thereof, and to a process for preparing isocyanate prepolymers using the bulk material of the invention, to the isocyanate prepolymers themselves and to the use thereof for preparation of polyurethane elastomers, especially cast polyurethane elastomers.

Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom

A method for processing hydrogen chloride from isocyanate preparation comprises the steps: a) providing hydrogen chloride; b) purifying the hydrogen chloride provided; and furthermore step c) or step d): c) bringing the purified hydrogen chloride into contact with water and/or with hydrochloric acid which is not saturated with respect to uptake of hydrogen chloride, d) further processing the purified hydrogen chloride to chlorine by partial oxidation. The hydrogen chloride provided in step a) contains organic and/or nitrogen-containing impurities and in step b) the purification is carried out by bringing hydrogen chloride into contact with hydrochloric acid which is saturated to the extent of &#x2265;90% with respect to uptake of hydrogen chloride at least in a first gas scrubber () and circulating this hydrochloric acid at least partially through the first gas scrubber ().

Method for processing hydrogen chloride from isocyanate preparation

The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.

Method for producing xylylene diisocyanates in the gaseous phase

The invention relates to a method for producing carbon nanotubes in the agglomerated form and thus obtained novel carbon nanotube agglomerates.

Carbon nanotube agglomerate

A novel carbon nanotube powder containing carbon nanotubes which have a roll-like structure, also novel carbon nanotubes having a roll-like structure, novel processes for the production of the carbon nanotube powders and of the carbon nanotubes, and their use as an additive or substrate for various applications are described.

Carbon nanotube powder, carbon nanotubes, and processes for their production

The invention relates to iron oxide pigments comprising an average solid body diameter of 0.1 to 500 &#x3bc;m, and to the production and use thereof.

Iron oxide pigments

Growing community of inventors

Leichlingen, Germany

Ralph Weber