Patent ID: 9023909
Filing Date: 2015-05-05
Classification: C08G,C08J

Abstract:
1. A process for producing a polyurethane foam, comprising the following steps: providing a mixture in a mixing head, where the mixture comprises: wherein: discharging the mixture comprising components A), B), C), and D) from the mixing head wherein, during the discharge of the mixture, the pressure prevailing in the mixture is lowered to atmospheric pressure; whereby the produced polyurethane foam has (i) an average pore diameter of from ≧10 nm to ≦10000 nm and (ii) a bimodal cell size distribution, wherein one maximum of the cell size distribution is in the range from ≧10 nm to ≦500 nm and a further maximum of the cell size distribution is in the range from ≧1 μm to ≦500 μm.