MIXTURES COMPRISING 1,1,1,3,3-PENTAFLUOROBUTANE AND 1,1,1,2,3,3,3-HEPTAFLUOROPROPANE.

摘要

The invention relates to advantageous blowing agent mixtures comprising HFC-365mfc and HFC-227 in addition to 1,1,1,3,3-pentafluoropropane and/or 1,1,2-tetrafluoroethane. The invention also relates to non-combustible polyetherpolyol and/or polyesterpolyol premixes for producing foam products, especially PU foam.