Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Christian Hahn

Reinhard Albers

Stephan Schubert

Marcel Schornstein

Hans-Detlef Arntz

Joachim Ritter

Hans Georg Grablowitz

Paul Heinz

Ernst Felske

Marina Reithmeier

Reiner Witkowski

Michael Baecker

Holger Breuer

Sven Gestermann

Frank Behrendt

Claudia Houben

Ali-Kasim Anwar

Alexander Pross

The present invention relates to an insulation body based a hard, fine-cell and open-cell polyurethane/polyisocyanurate foam with a barrier film, and a method for producing same.

Polyurethane-based insulation body and method for producing same

The invention relates to a continuous method for producing an isocyanurate-containing isocyanate mixture, in which in a step a) a mixture of a first and a second isocyanate component and an isocyanate group trimerization catalyst is provided; in a step b) the mixture obtained in step a) is reacted in a first residence time zone at an elevated temperature; in a step c), the reaction mixture obtained in step b) is further heated in a second residence time zone, optionally after adding a stopper; and in a step d), the reaction mixture obtained in step c) is cooled down in a third residence time zone by way of lowering the temperature, thus obtaining the desired isocyanurate-containing isocyanate mixture.

Method for producing isocyanate mixtures containing isocyanurate groups

The invention relates to a process used to produce open-cell and extremely fine-cell PUR/PIR rigid foams, said process using a polyol formulation comprising a specific isocyanate-reactive component, a catalyst component having zerewitinoff-active hydrogens and a cell-opener component.

Polyurethane foam and process for producing same

The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of micro structured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the application describes an apparatus suitable for execution of the aforementioned process.

Process and apparatus for continuous production of aqueous polyurethane dispersions

Growing community of inventors

Leverkusen, Germany

Christian Hahn