Basf Aktiengesellschaft

Basf Schwarzheide Gmbh

Michael Gassan

Bernhard Naber

Vera Neiss

Sarbananda Chakrabarti

Werner Schmiade

Wolfgang Weissflog

Thomas Schupp

Werner Deutsch

Peter Moeckel

In a process for producing rigid polyurethane foams by reacting

Production of rigid polyurethane foams

A process for recycling plastic waste containing a mixture of polyurethanes and other plastics, comprises reacting the plastic waste with an alcohol mixture comprising at least one low-molecular-weight, at least difunctional alcohol and at least one polyether-polyol, and then separating the resultant glycolysis polyol mechanically from the other plastic waste.

Recycling of plastic waste containing a mixture of polyurethanes with

In a process for reducing the primary amine content of a composition comprising at least one polyol, in which a composition comprising at least one polyol is admixed with at least one isocyanate which contains only secondary and/or tertiary, aliphatically bound isocyanate groups, isocyanate is added in an amount of up to 5% by weight, based on the total composition, and a polyol preparation is obtained.

Reduction of the amine content of recycled polyols

A process for the preparation of recyclate polyols obtained by glycolysis of polyurethanes and/or polyurea-polyurethanes comprises metering in monofunctional and/or difunctional glycidyl ethers over the entire course of the reaction; the low-amine recyclate polyols obtained in this way are used for the preparation of cellular or noncellular polyurethanes.

Growing community of inventors

Senftenberg, Germany

Michael Gassan