申请人:E. I. Du Pont de Nemours and Company
公开号:US05145999A1
公开(公告)日:1992-09-08
1-[2,2-bis(trifluoromethyl)-3,3,4,4,5,5,5-heptafluoropentyl]-3,5-diaminoben zene and 1-[2,2-bis(trifluoromethyl)-3,3,4,4,5,5,5-heptafluoropentyl]-4-aminobenzen e, as well as fluorinated polymers, preferably polyimides. The perfluoroalkyl group of these amines is connected to the benzene ring through a tertiary carbon atom followed by a methylene group. This renders the amines more reactive than other amines, where the perfluoroalkyl group is connected directly to the benzene ring. The absence of hydrogen from the group containing the tertiary carbon atom which is adjacent to the perfluorinated groups, prohibits dehydrofluorination.
1-[2,2-双(三氟甲基)-3,3,4,4,5,5,5-庚氟戊基]-3,5-二氨基苯和1-[2,2-双(三氟甲基)-3,3,4,4,5,5,5-庚氟戊基]-4-氨基苯,以及氟化聚合物,优选聚酰亚胺。这些胺的全氟烷基通过三级碳原子后跟一个亚甲基连接到苯环上。这使得这些胺比其他胺更具反应性,其中全氟烷基直接连接到苯环上。含有与全氟化基相邻的三级碳原子的基团中缺少氢,因此禁止脱氟。