申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0565352A2
公开(公告)日:1993-10-13
This invention relates to fluorine containing polyimide, a novel aromatic diamine which has a perfluoroalkyl radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same.
The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula :
such as the structural units of the formula
Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same.
The present invention can provide polyimide which has an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.
本发明涉及含氟聚酰亚胺、一种具有全氟烷基且可用作聚酰亚胺原料单体的新型芳香族二胺,以及制备该聚酰亚胺的工艺。
该聚酰亚胺由必要的结构单元组成,该结构单元具有一个或多个式......的重复结构单元:
例如式中的结构单元
此外,本发明还涉及一种具有全氟基并可用作聚酰亚胺原料单体的新型芳香族二胺,以及制备该单体的工艺。
本发明可提供介电常数极低、无色透明、加工性和耐热性优异的聚酰亚胺,还提供了一种可用作聚酰亚胺原料单体或其他各种工程塑料原料的芳香族二胺。