申请人:——
公开号:US20030064235A1
公开(公告)日:2003-04-03
For providing a polyimide optical component exhibiting good physical properties inherent to a polyimide, i.e., heat resistance, mechanical properties, electric properties, thermal oxidation stability and chemical resistance, as well as good transparency and a high refractive index, this invention, this invention essentially uses a particular diamine and a particular tetracarboxylic dianhydride to give an optical component made of a polyimide having a motif represented by general formula (1):
1
wherein in general formula (1), A represents general formula (2), (3) or (4); X represents a direct bond, —O—, —SO
2
— or —C(CF
3
)
2
—;
in general formula (2), R
1
and R
2
represent H, Cl, Br, CH
3
or CF
3
;
in general formula (3), A
1
represents —O—, —S—, —CO—, —CH
2
—, —SO
2
—, —C(CH
3
)
2
— or —C(CF
3
)
2
—;
in general formula (4), A
2
represents a direct bond, —O—, —S—, —CO—, —SO
2
—, —C(CH
3
)
2
— or —C(CF
3
)
2
—.
为了提供一种聚酰亚胺光学元件,使其具有聚酰亚胺固有的良好物理性能,即耐热性、机械性能、电性能、热氧化稳定性和耐化学性,以及良好的透明度和高折射率,本发明主要使用一种特定的二胺和一种特定的四羧酸二酐,以得到一种由具有通式(1)表示的图案的聚酰亚胺制成的光学元件:
1
其中,在通式(1)中,A 代表通式(2)、(3)或(4);X 代表直接键、-O-、-SO
2
- 或 -C(CF
3
)
2
-;
在通式(2)中,R
1
和 R
2
代表 H、Cl、Br、CH
3
或 CF
3
;
在通式(3)中,A
1
代表-O-、-S-、-CO-、-CH
2
-、-SO
2
-、-C(CH
3
)
2
- 或 -C(CF
3
)
2
-;
在通式(4)中,A
2
代表直接键、-O-、-S-、-CO-、-SO
2
-、-C(CH
3
)
2
- 或 -C(CF
3
)
2
-.