Perdeuterated polyimides, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500 cm-1
申请人:Anselmi Elsa
公开号:US20070185282A1
公开(公告)日:2007-08-09
The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between:
at least one repeat unit corresponding to the following formula (I):
in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II):
-A
1
-Z- (II)
in which:
A
1
represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms;
Z represents a single bond or a group chosen from —O—C
6
D
4
-, —CO—C
6
D
4
- and —C
6
D
4
-.
These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm
−1
, for example in laser devices.
Perdeuterated polyimide, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500 cm-1
申请人:Anselmi Elsa
公开号:US20070185283A1
公开(公告)日:2007-08-09
The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between:
at least one repeat unit corresponding to the following formula (I):
in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II):
-A
1
-Z- (II)
in which:
A
1
represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms;
Z represents a single bond or a group chosen from —O—C
6
D
4
-, —CO—C
6
D
4
- and —C
6
D
4
-.
These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm
−1
, for example in laser devices.