发明授权
US5387357A Azeotropic or azeotrope-like compositions of ammonia and
hydrofluorocarbons
失效
共沸或类似共沸组合物的氨和氢氟碳化合物
- 专利标题: Azeotropic or azeotrope-like compositions of ammonia and hydrofluorocarbons
- 专利标题(中): 共沸或类似共沸组合物的氨和氢氟碳化合物
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申请号: US951734申请日: 1992-09-25
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公开(公告)号: US5387357A公开(公告)日: 1995-02-07
- 发明人: Mark B. Shiflett , Akimichi Yokozeki
- 申请人: Mark B. Shiflett , Akimichi Yokozeki
- 申请人地址: DE Wilmington
- 专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人: E. I. Du Pont de Nemours and Company
- 当前专利权人地址: DE Wilmington
- 主分类号: C08J9/12
- IPC分类号: C08J9/12 ; C07C19/08 ; C09K3/00 ; C09K3/30 ; C09K5/04
摘要:
Constant boiling azeotropic or azeotrope-like compositions of ammonia and 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, difluoromethane, pentafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane are disclosed that are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
公开/授权文献
- US5905685A Dynamic memory 公开/授权日:1999-05-18
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