Basf Aktiengesellschaft

Basf Se Corporation

Edmund Stadler

Dieter Tintelnot

Peter Woo

Anke Schulze

Ralf Hinrichs

Horst H&uuml;rkamp

Klaus Sobolewski

Peter Reinerth

Heinz-Dieter Lutter

Andre Meyer

Jürgen Mertes

Georg Knoblauch

Heinz Forster

Juergen Mertes

Marc Claude Martin

Kirsten Simon

Armin Reindl

Armin Deininger

Thomas Sandbank

Matthias Hefner

Franck Pomeris

Heinz-Juergen Schroeder

Jens Varding

Thomas Droege

Stefanie Luenne

Juergen Boos

Heinz-Jürgen Schröder

Invention relates to a process for producing viscoelastic flexible polyurethane foams by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, wherein as b) a mixture of bi) from 25 to 70% by weight of a hydroxyl-comprising natural oil or fat or a reaction product of a hydroxyl-comprising natural oil or fat with alkylene oxides, bii) from 3 to 30% by weight of at least one polyether having a hydroxyl number of from 100 to 800 mg KOH/g and a functionality of 3-5 selected from the group consisting of polyether prepared by addition of alkylene oxides onto an amine, biii) 20-50% by weight of at least one polyether alcohol having a hydroxyl number of from 10 to 80 mg KOH/g and a functionality of 2-5, where the proportion of ethylene oxide is 5-25% by weight, based on the weight of the polyether alcohol, and at least part of the ethylene oxide is added on at the end of the polyether chain, biv) &#x3e;0-8% by weight of at least one polyether alcohol having a functionality of 2-4, a hydroxyl number of 15-60 mg KOH/g and a content of ethylene oxide of &#x3e;50% by weight of the polyether alcohol is used.

Method for producing viscoelastic polyurethane flexible foams

The invention relates to composite elements comprising the following laminar structure: (i) 2 to 20 mm metal; (ii) 10 to 100 mm polyisocyanate polyaddition products having a density ranging from 350 to 1050 kg/mthat can be obtained by reacting (a) isocyanates with (b) compounds, which are reactive to isocyanates, in the presence of (f) expanding agents, and; (iii) 2 to 20 mm metal.

Composite elements containing polyisocyanate polyaddition products

In a process for the production of composite elements which have the following layer structure:

Method for producing composite elements

Carbamate solutions

Carbamate solutions with bound carbon dioxide prepared from alkanolamines

Growing community of inventors

Hollfeld, Germany

Edmund Stadler