Process for making flexible polyurethane foams

摘要

A process for treating a flexible polyurethane foam comprising heating the foam at a temperature between 70 to 200oC for a time between 0.5 minutes to 8 hours. The flexible foam has a major glass-rubber transition between -100 to +25oC, a Tandmax over the -100 to +25oC temperature range below 0.2 and/or a Young's storage modulus E' ratio at -100 to +25oC of 1.3 to 15.