Basf Aktiengesellschaft

Peter Brandt

Bernd Bruchmann

Otto Volkert

Harald Fuchs

Franz Merger

Rainer Becker

Tom Witzel

Heinz-Dieter Lutter

Gerhard Laqua

Stefan Wolff

Ruth Zschiesche

Andreas Otterbach

Klaus Pittrich

Konrad Stiefenhofer

The present invention relates to a process for the preparation of CFC-free, flexible polyurethane (molded) foams by reacting

Preparation of CFC-free, highly resilient, flexible polyurethane foams,

A process for producing moldings containing ester and urethane groups and having a cellular core and a compacted surface zone, preferably shoe soles, comprises reacting

Production of molding containing ester and urethane groups, isocyanate

Production of moldings containing ester and urethane groups, isocyanate

Polyisocyanates containing isocyanurate groups are prepared by a partial trimerization of (cyclo)aliphatic diisocyanates in the presence of at least one trimerization catalyst selected from the group consisting of tetraalkylammonium alkyl carbonates of the formula (I) ##STR1## (quaternary ammonioalkyl) carbonates having a betaine structure of the formula (II) ##STR2## and the preferred use of the polyisocyanates containing isocyanurate groups which are obtainable in this way is aspolyisocyanate component in polyurethane finishes.

Preparation of polyisocyanates containing isocyanurate groups and use

Growing community of inventors

Ludwigshafen, Germany

Peter Brandt