Process for making a flexible polyurethane foam

摘要

Process for making a flexible polyurethane foam by reacting a polyisocyanate and a polyol composition in the presence of water, a reactive amine catalyst and a specific metal salt. The foams have a low level of volatile organic compounds (VOCs) and a desirable combination of mechanical and durability properties.

主权项

1. A flexible polyurethane foam prepared using a reactive amine catalyst and a zinc carboxylate catalyst having a hardness of >80 N measured as Indentation Load Deflection ILD according to ISO 2439 at 40% compression, a humid compression set value at 70% and 50° C. of less than 5% measured according to HPU-FT-010, a tear strength higher than 200 N/m measured according to ISO 8067, a hardness loss ILD 40% after dynamic fatigue of less than 20% measured according to ISO 3385 and a VOC emission value <100 μg/g measured according to VDA 278; and wherein the reactive amine catalyst is a tertiary amine that is incorporated into a polyurethane matrix of the polyurethane foam.