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    • 10. 发明授权
    • Blowing agent composition and polymeric foam containing a normally-liquid hydroflurocarbon and carbon dioxide
    • 发泡剂组合物和含有常液态氢氟烃和二氧化碳的聚合物泡沫
    • US06599946B2
    • 2003-07-29
    • US10286565
    • 2002-11-01
    • John D. DuffyWarren H. Griffin
    • John D. DuffyWarren H. Griffin
    • C08J914
    • C08J9/146C08J9/0066C08J9/122C08J9/144C08J9/149C08J2203/06C08J2203/12C08J2203/142C08J2203/182C08J2203/202
    • The present invention relates to blowing agent compositions for polymeric foams that contain carbon dioxide and a hydrofluorocarbon having a boiling point of 14° C. or higher and lower than about 120° C. The present invention also relates to processes for preparing polymeric foam using such blowing agent compositions, foamable polymer compositions containing such blowing agents, and polymeric foams containing such blowing agent compositions. Suitable blowing agent combinations include: (a) a composition containing carbon dioxide and at least one hydrofluorocarbon having a boiling point of 30° C. to about 120° C. that is essentially free of other low boiling ethers and hydrocarbons; (b) a composition containing greater than 50 weight-percent carbon dioxide and at least one hydrofluorocarbon having a boiling point of 14° C. or higher to about 120° C.; and (c) carbon dioxide and one hydrofluorocarbon having a boiling point of 14° C. or higher and lower than about 120° C.
    • 本发明涉及含有二氧化碳的聚合物泡沫的发泡剂组合物和沸点为14℃或更高且低于约120℃的氢氟烃。本发明还涉及使用这种方法制备聚合物泡沫的方法 发泡剂组合物,含有这种发泡剂的可发泡聚合物组合物和含有这种发泡剂组合物的聚合物泡沫。合适的发泡剂组合包括:(a)含有二氧化碳和至少一种沸点为30℃至 约120℃,其基本上不含其它低沸点醚和烃; (b)含有大于50重量%二氧化碳和至少一种沸点为14℃或更高至约120℃的氢氟烃的组合物; 和(c)二氧化碳和沸点为14℃以上且低于约120℃的一种氢氟烃。