申请人:Yang Yu
公开号:US20090312517A1
公开(公告)日:2009-12-17
A process comprises combining in a batchwise, semi-continuous, or continuous manner, or a combination thereof, in the presence of at least one free radical initiator, and at a temperature sufficient to cause the initiator to fragment to form free radicals, (a) at least one telogen selected from (1) fluoroalkyl halides that comprise at least one halomethylene moiety (—CHX—) and, optionally, at least one non-fluorine heteroatom, and (2) perfluoroalkyl halides that comprise at least one halofluoromethylene moiety (—CFX—) and at least one non-halogen heteroatom, the halides being selected from iodides and bromides; and (b) ethylene; the telogen and the ethylene being combined in total amounts such that the number of moles of ethylene per mole of telogen is at least about 4.
该过程包括在至少一种自由基引发剂的存在下,以批处理、半连续或连续的方式或其组合方式,以足以使引发剂裂解形成自由基的温度,将至少一种缩聚体选自(1)包含至少一个卤代亚甲基(—CHX—)和可选地至少一个非氟杂原子的氟烷基卤化物和(2)包含至少一个卤氟亚甲基(—CFX—)和至少一个非卤素杂原子的全氟烷基卤化物,卤化物选自碘化物和溴化物,与乙烯结合;缩聚体和乙烯的总量使得乙烯的摩尔数每摩尔缩聚体至少为4。