Basf Se Corporation

Evonik Operations Gmbh

Evonik Degussa Gmbh

Basf Polyurethanes Gmbh

Frank Fechner

Markus Schütte

Marc Fricke

Martin Glos

Joachim Venzmer

Mark Elbing

Holger Seifert

Christian Eilbracht

Markus Schuette

Carsten Schiller

Michael Klostermann

Johann Klassen

Werner Wiegmann

Jörg Krogmann

Manfred Genz

Katrin Ebert

Markus SCHÜTTE

Disclosed herein is a method for producing polyurethane or polyisocyanurate foams. The method involves reacting a composition (Z1) with at least one polyisocyanate, and occurs in the presence of at least one nucleating agent and a blowing agent, in which the nucleating agent and the blowing agent are mixed to obtain a composition (Z2) that is added to the composition (Z1) before it is reacted with the at least one polyisocyanate. The composition (Z1) contains (i) 100 parts by mass of a composition (ZP) including at least one polyol and at least one catalyst that catalyzes formation of a urethane, urea or isocyanuarate bond, and (ii) from 0.05 to 10 parts by mass of a surfactant TD having an HLB value below 6 and no silicon atom.

Composition that is suitable for producing polyurethane foams and that contains at least one nucleating agent

The present invention relates to a dynamically evacuable, electrically operated device comprising a coherently evacuable region and a temperature-controllable useful region, which is thermally insulated from the ambient temperature by the coherently evacuable region, and also a means for actively maintaining a vacuum, such that the pressure in the coherently evacuable region of the device is constantly within a defined pressure range, said coherently evacuable region making up at least 20% by volume of the total volume which is occupied by a porous and/or cellular insulating material in the device, and said coherently evacuable region comprising at least one organic aerogel and/or organic xerogel.

Dynamically evacuable devices comprising organic aerogels or xerogels

The invention relates to a composite element comprising a) a core made of a foam or of a porous material, b) an outer layer applied to the core a), and, c) a foil c) made of a thermoplastic and differing from the outer layer b).

Composite elements

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Melle, Germany

Frank Fechner