发明授权
- 专利标题： Refrigerant compositions
- 专利标题（中）： 制冷剂组合物
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申请号： US242807申请日： 1999-05-07
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公开(公告)号： US6117356A公开(公告)日： 2000-09-12
- 发明人: Richard L Powell , Stuart Corr , Frederick T Murphy , James D Morrison
- 申请人： Richard L Powell , Stuart Corr , Frederick T Murphy , James D Morrison
- 申请人地址： GBX London
- 专利权人： Imperial Chemical Industries PLC
- 当前专利权人： Imperial Chemical Industries PLC
- 当前专利权人地址： GBX London
- 优先权： GBX9618207 19960830
- 主分类号： F25B1/00
- IPC分类号： F25B1/00 ; C09K3/30 ; C09K5/04
摘要：
?PPA composition is described which comprises carbon dioxide (CO2), at least one hydrofluorocarbon selected from the group consisting of 1,1,1,2tetrafluoroethane (R-134a), 1,1,2,2-tetrafluoroethane (R-134) and 1,1difluoroethane (R-152a), and at least one hydrofluorocarbon selected from the group consisting of 1,1,1,3,3,3-hexafluoropropane (R-236fa) and 1,1,1,2,3,3-hexafluoropropane (R-236ea). The composition may additionally comprise at least one hydrocarbon and can be used as a replacement for refrigerant R-12 in automobile air conditioning and domestic refrigeration systems.
公开/授权文献
- US4925616A Method of protecting a cased pipeline from corrosion 公开/授权日：1990-05-15