abstract |
The present invention is a method of purifying an olefin feed containing R-5 1234yf, R-40, R-134a, R-134, R-1225zc, and OFCB, both of the three and two components containing 1234yf. The present invention relates to a method including a step of separating the boiling composition. The olefin feed is obtained by pyrolyzing tetrafluoroethylene / chlorodifluoromethane with chloromethane / methane, optionally in the presence of an initiator. [Selection diagram] None |