发明名称 |
METHOD FOR PURIFYING 1,1,1,3,3-PENTAFLUOROPROPANE |
摘要 |
<p>HFC-245fa is effectively separated from the mixture comprising 1,1,1,3,3-pentafluoropropane (HFC-245fa) and HF through a purification process comprising contacting at least one extraction agent selected from the group consisting of (a) a compound corresponds to the general formula (I): CxFyHz, (b) a compound corresponds to the general formula (II): R1R2R3N, (c) an compound corresponds to the general formula (III): R4OR5 and (d) a compound corresponds to the general formula (IV): ClClmHn with a mixture comprising 1,1,1,3,3-pentafluoropropane and hydrogen fluoride so as to form a liquid mixture and separating the liquid mixture into two liquid layers, followed by obtaining an extraction agent phase including HFC-245fa and the extraction agent as the main components, and separatively recovering HFC-245fa from the extraction agent phase. <IMAGE></p> |
申请公布号 |
EP0921109(A1) |
申请公布日期 |
1999.06.09 |
申请号 |
EP19970927389 |
申请日期 |
1997.06.19 |
申请人 |
DAIKIN INDUSTRIES, LIMITED |
发明人 |
KITANO, KEISUKE;NAKADA, TATSUO.;SHIBANUMA, TAKASHI |
分类号 |
C07C17/20;C07C17/38;C07C19/08;(IPC1-7):C07C19/08 |
主分类号 |
C07C17/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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