公开(公告)号：WO2019220460A1

公开(公告)日：2019-11-21

申请号：PCT/IN2019/050388

申请日：2019-05-15

申请人： SRF LIMITED

发明人： GEORGE, Jose ,  RAJ, Sunil ,  MISHRA, Ambuj Kumar ,  KATIYAR, Anurag ,  JAIN, Anurag ,  MISHRA, Manoj Kumar ,  SHARMA, Aditya

IPC分类号： C09K5/00

摘要： The present invention provides azeotropic or azeotrope-like compositions comprising 1234yf and at least one component selected from a group comprising of R-134, and R-134a. The compositions of the present invention are useful as refrigerants, heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.

公开(公告)号：WO2019220454A1

公开(公告)日：2019-11-21

申请号：PCT/IN2019/050380

申请日：2019-05-13

申请人： SRF LIMITED

发明人： GEORGE, Jose ,  RAJ, Sunil ,  MISHRA, Ambuj Kumar ,  KATIYAR, Anurag ,  JAIN, Anurag ,  MAITY, Sudip

IPC分类号： C07C17/386 ,  C07C21/18

摘要： The present invention relates to a process for purifying olefin feed comprising R-5 1234yf, R-40, R-134a, R-134, R-1225zc, and OFCB, comprising the step of separating different ternary and binary azeotrope compositions comprising 1234yf. The olefin feed is obtained from the pyrolysis of tetrafluoroethylene/ chlorodifluoromethane with chloromethane/methane, optionally in presence of initiator.