Polyurethane foam materials having reduced cold-flow effect and method for producing same

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United States of America

PATENT NO 11919994
SERIAL NO

17601806

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Abstract

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The invention relates to a method for producing soft polyurethane foam obtained by reacting a composition containing a component A1 containing at least one filled polyol, a component A2 containing compounds reactive with isocyanates and having a hydroxyl value of ≥20 to <100 mg KOH/g, the component A2 not containing any filled polyol, a component A3 containing water and/or at least one physical blowing agent, a component A4 containing auxiliary agents and additives, and a component B containing di- and/or polyisocyanates, characterized in that the reaction occurs in the presence of 0.5 to 3 parts by weight of an organic urea derivative as component C, which is obtained by reacting urea with a difunctional amine having a number-average molecular weight of 200 to 1000 g/mol. The invention also relates to a soft polyurethane foam obtainable by the method.

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Patent Owner(s)

Patent OwnerAddress
COVESTRO DEUTSCHLAND AGLEVERKUSEN GERMANY LEVERKUSEN NORTH RHINE-WESTPHALIA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brassat, Lutz Leverkusen, DE 14 126
Gossner, Matthaeus Cologne, DE 5 33
Haas, Peter Haan, DE 116 1111
Meyer-Ahrens, Sven Leverkusen, DE 28 180
Schedler, Michael Leverkusen, DE 7 4

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