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US 12,729,175 B2Granted
Method for producing composition containing purified fluorine-containing ether compound
AssigneeDaikin Industries, Ltd.
InventorsDaisuke Karube, Kenta Nishimura, Yuuki Suzuki, Tsubasa Nakaue, Yoshichika Kuroki, Michiaki Okada
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Abstract
The present disclosure provides a method for producing a composition comprising a purified fluorine-containing ether compound represented by formula (1): CHX1X2CF2OX3, wherein X1 and X2 are the same or different and each represents a hydrogen atom, a fluorine atom, or a trifluoromethyl group, and X3 represents a C1-6 alkyl group, provided that not both X1 and X2 are trifluoromethyl groups.
Claims4
A composition comprising
- 1,1,2,3,3,3-hexafluoropropyl methyl ether (HFE-356mec),
- CF3CF═CFOCH3 and/or CF2═CFCF2OCH3, and
- hydrogen fluoride,
- wherein the total content of CF3CF═CFOCH3 and CF2═CFCF2OCH3 is 0.00001 mass % or more and 0.1 mass % or less based on HFE-356mec,
- wherein the hydrogen fluoride is present in the composition, and
- wherein the content of the hydrogen fluoride is 0.01 mass % or less based on HFE-356mec.
3 more elements
Dependencies are inferred from the claim text.