There is provided a film comprising a layered silicate cation-exchanged with an organic cation and a polyester or polycarbonate. The organic cation is represented by the following formula (I):
wherein R is a group represented by the following formula (I-1):
wherein R1 is a divalent hydrocarbon group having 5 to 20 carbon atoms, and R2 is a divalent hydrocarbon group having 1 to 20 carbon atoms,
an alkyl group, an aryl group or an aralkyl group, L+ is an ammonium ion, a phosphonium ion or a hetero aromatic ion, and n is an integer of 1 to 4, with the proviso that when L+ is an ammonium ion or a phosphonium ion, n is 4 and four Rs may be the same or different. This film has the layered silicate highly dispersed therein and is excellent in various properties such as mechanical properties and dimensional stability.
本发明提供了一种薄膜,它由与有机阳离子进行阳离子交换的层状
硅酸盐和聚酯或聚
碳酸酯组成。有机阳离子由下式(I)表示:
其中 R 是由下式(I-1)表示的基团:
其中 R1 是具有 5 至 20 个碳原子的二价烃基,R2 是具有 1 至 20 个碳原子的二价烃基、
L+ 是
铵离子、
鏻离子或杂芳离子,n 是 1 至 4 的整数,但当 L+ 是
铵离子或
鏻离子时,n 是 4,四个 R 可以相同或不同。这种薄膜具有高度分散的层状
硅酸盐,在机械性能和尺寸稳定性等各种性能方面都非常出色。