Japan, Sept. 18 -- DAIKIN IND LTD has got intellectual property rights for 'METHOD FOR PRODUCING COMPOSITION CONTAINING PURIFIED FLUORINE-CONTAINING ETHER COMPOUND.' Other related details are as follows:

Application Number: JP,2025-064096

Category (FI): C07C43/12,C07C43/17

Stage: PROBLEM TO BE SOLVED: To provide a composition comprising a purified fluorine-containing ether compound.SOLUTION: The present invention provides a composition comprising 1,1,2,3,3,3-hexafluoropropyl methyl ether (HFE-356mec), and CF3CF=CFOCH3 and/or CF2=CFCF2OCH3, wherein the total content of CF3CF=CFOCH3 and CF2=CFCF2OCH3 is 0.00001 mass% or more to 0.1 mass% or less relative to HFE-356mec, and the purity of HFE-356mec in the composition is more than 95 mass%.S...