Perfluoro-4-alkyl-1,3-dioxoles having the general formula
1
wherein R
f
is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.
                            通式如下的
全氟-4-烷基-1,3-二氧杂
环戊烯
1
其中 R
f
是具有 1 至 5 个碳原子的
全氟烷基,可用于制备 Tg 值高于含有相同摩尔百分比的本领域含
氟二恶英共聚物的共聚物。