Melt processible copolymer composition
AssigneeDuPont-Mitsui Fluorochemicals Co., Ltd.
InventorShinichi Namura
Life of this patent
Estimating the term…
Abstract
A composition comprising tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer and PTFE micropowder with flex life superior to compositions made exclusively of tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer having equivalent perfluoro(alkyl vinyl ether) content and melt flow rate.
Claims9
A melt processible composition comprising about 65 to 45% by weight of a copolymer of about 95 to 90% by weight of tetrafluoroethylene and about 5 to 10% by weight of perfluoro(alkyl vinyl ether) and about 35 to 55% by weight of polytetrafluoroethylene, wherein said copolymer has a melt flow rate of about 0.1 to 1.7 g/10 min at 372±1° C. and said polytetrafluoroethylene has a melt flow rate of not less than about 1 g/10 min at 372±1° C.
A container comprising a composition including about 70 to 45% by weight of a copolymer of about 95 to 90% by weight of tetrafluoroethylene and about 5 to 10% by weight of perfluoro(alkyl vinyl ether) and about 30 to 55% by weight of polytetrafluoroethylene, wherein said copolymer has a melt flow rate of about 0.1 to 1.7 g/10 min at 372±1° C. and said polytetrafluoroethylene has a melt flow rate of not less than about 1 g/10 min at 372±1° C.
Dependencies are inferred from the claim text.