Patent ID: 11898006
Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. The method according to claim 1, wherein mixture (PFHOC(O)F—OC(O)F) consists essentially of compounds of formula (III) and optionally (II), wherein formula (III) is as follows:

F—C(O)—O—CH2—RH—[CH2—O—CF2CHF—(CRf1Rf2)a—O—Rf—O—(CRf1Rf2)b—CFHCF2—O—CH2—RH—]n′—CH2—O—C(O)—F.