Esemiddelblandinger som inneholder fluorhydrokarboner og en lavtkokende alkohol- og/eller lavtkokende karbonylforbindelse

摘要

The present invention relates to blowing agent compositions that contain at least one hydrofluorocarbon having a boiling point of 30 DEG C. or higher and lower than about 120 DEG C., at least one hydrofluorocarbon having a boiling point lower than 30 DEG C., and at least one component selected from low-boiling alcohols and low-boiling carbonyl compounds. The present invention also relates to processes for preparing polymeric foam using such blowing agent compositions, as well as polymeric foams and foamable polymer compositions containing such blowing agent compositions.