Basf Aktiengesellschaft

Basf Se Corporation

Evonik Operations Gmbh

Basfaktiengesellschaft

Werner Wiegmann

Udo Rotermund

Holger Seifert

Renate Hempel

Marion Heinz

Anja Biedermann

Johann Klassen

Marc Fricke

Martin Glos

Joachim Venzmer

Mark Elbing

Christian Eilbracht

Eva Baum

Markus Schuette

Carsten Schiller

Michael Klostermann

Michael Reichelt

Joerg Krogmann

Gottfried Knorr

Frank Fechner

Louis Du Rieu

Guenter Matzke

Jorg Krogmann

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 method for manufacturing a composite element comprising a single- or multi-part core and an envelope which are in a force fit combination with each other, at least comprising providing a single- or multi-part core of an evacuable organic material; at least partly enveloping the core with an envelope to obtain a composite element precursor; and treating the composite element precursor for a period leading to an at least partial softening of the evacuable organic material and of the envelope surface apposing the core. The present invention further relates to composite elements obtained or obtainable by a method of the present invention and also to the method of using a composite element of the present invention as a vacuum insulation panel or as a thermal insulation material.

Method for manufacturing a composite element for vacuum insulation elements

The invention relates to rigid polyurethane foams which can be produced by reacting

Rigid polyurethane foams

Storage-stable, blowing agent-containing emulsions for producing rigid foams based on isocyanate

A process for producing rigid polyurethane foams with reduced density by reacting

Production of rigid polyurethanes foams with reduced density

Blowing agent-containing emulsions comprise

Storage-stable emulsions for producing fine-celled rigid foams based on

In a process for producing rigid polyurethane foams having improved heat distortion resistance and reduced thermal conductivity by reacting

Production of rigid polyurethane foams

In a process for producing open-celled rigid foams by reacting a) polyisocyanates with b) compounds containing hydrogen atoms which are reactive toward isocyanates, in the presence of c) water, d) if desired, organic compounds acting as physical blowing agents, e) catalysts, auxiliaries and/or additives, the compounds containing reactive hydrogen atoms used are substances having the structure I: ##STR1## where m is 0-15

Open-celled rigid foams based on isocyanate

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Rahdem, Germany

Werner Wiegmann