Patent ID: 8747973

Claim:
A fluid transfer member which is composed by a laminate containing a layer [P] comprising a fluoropolymer and/or a fluorine-free organic material and a layer [Q] comprising a chlorotrifluoroethylene copolymer, wherein the chlorotrifluoroethylene copolymer is a chlorotrifluoroethylene copolymer consisting of chlorotrifluoroethylene unit, tetrafluoroethylene unit and a monomer [B] unit derived from a monomer [B] copolymerizable with chlorotrifluoroethylene and tetrafluoroethylene, wherein the sum of said chlorotrifluoroethylene unit and said tetrafluoroethylene unit amounts to 90 to 99.9 mole percent and said monomer [B] unit amounts to 10 to 0.1 mole percent, wherein said chlorotrifluoroethylene unit amounts to 12.4 to 61.6 mole percent of units constituting the chlorotrifluoroethylene copolymer, wherein said monomer [B] is at least one monomer selected from the group consisting of a perfluoro(alkyl vinyl ether) and a vinyl monomer represented by the general formula (I): CX 3 X 4 ═CX 1 (CF 2 ) n —X 2 (I) wherein X 1 , X 3 and X 4 are the same or different and each represents hydrogen atom or fluorine atom, X 2 represents hydrogen atom, fluorine atom or chlorine atom and n represents an integer of 1 to 10, the temperature required for 1% by mass of the chlorotrifluoroethylene copolymer to be decomposed is not lower than 380° C.