Patent ID: 11879109
Assignee: RESONAC CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 5:
6. The fluorine-containing ether compound according to Claim 1,
wherein R3 is any of the following formulae (3) to (5),

—CF2O—(CF2CF2O)b—(CF2O)c—CF2—  (3)

(b and c in the formula (3) indicate average degrees of polymerization and each independently represents 0 to 30; here, there is no case where b and c become 0 at the same time)

—CF(CF3)—(OCF(CF3)CF2)d—OCF(CF3)—  (4)

(d in the formula (4) indicates an average degree of polymerization and represents 0.1 to 30)

—CF2CF2O—(CF2CF2CF2O)e—CF2CF2—  (5)

(e in the formula (5) indicates an average degree of polymerization and represents 0.1 to 30).