POLYETHER POLYOL COMPOSITION FOR PRODUCING VISOELASTIC POLYURETHANE FOAMS

Abstract: the invention relates to a polyether polyol composition for preparing viscoelastic polyurethane foams, comprising the following: at least one polyether polyol with a hydroxyl number of 300 to 600 mgkoh/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content, at least one polyether polyol with a hydroxyl number of 150 to 300 mgkoh/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content; at least one polyether polyol with a hydroxyl number of 100 to 300 mgkoh/g, a functionality of 2 to 6 and an ethylene oxide content of more than 50% based on the total polyoxyalkylene oxide content; at least one polyether polyol with a hydroxyl number of 20 to 60 mgkoh/g, a functionality of less than 3 and an ethylene oxide content of 30 to 60% based on the total polyoxyalkylene oxide content; and optionally propanetriol, at least one polyether polyol with a hydroxyl number of 20 to 60 mgkoh/g, a functionality of less than 3 and an ethylene oxide content of up to 40% based on the total polyoxyalkylene oxide content and/or at least one polyether polyol with a hydroxyl number of 20 to 60 mgkoh/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content. furthermore, the invention relates to a method for producing a viscoelastic polyurethane foam and a foam thus produced.

Inventor(s): Lukasz Bartnicki, Michal Salasa, Magdalena Wroblewska, Lukasz Makula

CPC Classification: C08G18/4808 (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS)

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