Method for producing fluorinated ether compound
AssigneeAGC Inc.
InventorsTakuya IWASE, Motoshi AOYAMA
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Abstract
To provide a method for producing a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a sulfonate group with low impurity content and in high yield. A method for producing a fluorinated ether compound, comprising step 1 of sulfonylating a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a hydroxy group in the presence of a fluorinated solvent, a base and a sulfonylating agent to obtain a product containing a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a sulfonate group, and step 2 of contacting the product obtained in step 1 with an adsorbent having a pH of at most 8.0.
Claims10
A method for producing a fluorinated ether compound, comprising
- step 1 of sulfonylating a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a hydroxy group in the presence of a fluorinated solvent, a base and a sulfonylating agent to obtain a product containing a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a sulfonate group, and
- step 2 of contacting the product obtained in step 1 with an adsorbent having a pH of at most 8.0.
A method for producing a fluorinated ether compound, comprising
- step 1 of sulfonylating a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a hydroxy group in the presence of a fluorinated solvent, a base and a sulfonylating agent to obtain a product containing a fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a sulfonate group,
- step 3 of separating the product obtained in step 1 into two phases, and separating and recovering the phase containing a larger amount of the fluorinated ether compound having a poly(oxyfluoroalkylene) chain and a sulfonate group among the two phases, and
- step 4 of contacting the separated and recovered phase with an adsorbent having a pH of at most 8.0.
Dependencies are inferred from the claim text.