申请人:Makinoshima Takashi
公开号:US20080020217A1
公开(公告)日:2008-01-24
The present invention provides a colorless, transparent polyimide composite film containing a polyimide (A) having a specific repeating unit, and an organic-treated layered silicate (B) obtained through treatment with an organic onium ion having a specific structure such that the organic-treated layered silicate (B) is dispersed in the polyimide (A); and as well a method for producing a colorless, transparent polyimide composite film, the method including forming a film-form mixture through extrusion or application, onto a support, of a three-component liquid mixture containing the polyimide (A), the organic-treated layered silicate (B), and an organic solvent (C) having a specific SP value; and subsequently removing the organic solvent (C) from the film-form mixture. The polyimide composite film of the present invention is a colorless, transparent film containing the polyimide (A) and the organic-treated layered silicate (B) which is very uniformly dispersed in the polyimide, exhibiting excellent heat resistance and mechanical properties, and exhibiting flexibility.
本发明提供了一种无色透明的聚酰亚胺复合膜,其中包含具有特定重复单元的聚酰亚胺(A)和经有机阳离子处理的具有特定结构的有机处理层状硅酸盐(B),使得经有机处理的层状硅酸盐(B)分散在聚酰亚胺(A)中;以及一种生产无色透明聚酰亚胺复合膜的方法,该方法包括通过挤出或应用形成膜形混合物,将聚酰亚胺(A)、经有机处理的层状硅酸盐(B)和具有特定SP值的有机溶剂(C)的三组分液体混合物涂覆到支撑物上,并随后从膜形混合物中去除有机溶剂(C)。本发明的聚酰亚胺复合膜是一种无色透明的膜,其中包含聚酰亚胺(A)和经有机处理的层状硅酸盐(B),后者在聚酰亚胺中非常均匀地分散,具有优异的耐热性和机械性能,同时还具有柔韧性。