Perdeuterated polyiimides, their process of preparation and their use as materials which are transparent within the region from 2500 to 3500cm-1
US7211632B2 · kind B2 · utility
0Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | May 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1053
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: in which: 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.