Method for producing low repulsive polyurethane foam and composition for low repelling polyurethane foam and low repelling polyurethane foam

摘要

Problem to be solved: to provide a low repulsive polyurethane foam capable of suppressing the hardness increase in a low temperature region.Molecular weight: 3700 to 7000Functional groups: 2 to 4A polyether polyol a of hydroxyl group 20 to 50 mgKOH / gThe molecular weight per functional group is 800 to 1200Functional groups: 2 to 3A poly (ether polyol) of 40 to 70 mgKOH / gPolyol A and polyol B were polyol A: polyol BMDI based isocyanateAs isocyanate index 60 to 115Reaction and foaming are carried out by the existence of the foaming agent and catalyst, and the low repelling polyurethane foam is produced.The low resilience polyurethane foam f manufactured is provided on the surface of a seat cushion 100 for a vehicle.Diagram