Basf Aktiengesellschaft

Basf Se Corporation

Ansgar Frericks

Horst Binder

Heinz-Dieter Lutter

Iran Otero Martinez

Hauke Malz

Martin Kreyenschmidt

Andre Meyer

Thomas Flug

Dieter Rodewald

Edmund Stadler

Marc Claude Martin

Kirsten Simon

Heinz-Juergen Schroeder

Franck Pomeris

Patrick Weiss

Jens Varding

Heinz-Jürgen Schröder

Marc Martin

Alexander Raeth

Sonja Altmeppen

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

Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.

Catalysts, in particular for the preparation of polyisocyanate polyadducts

Growing community of inventors

Osnabrück, Germany

Ansgar Frericks